---
_id: '64826'
author:
- first_name: Max
  full_name: Kelber, Max
  id: '70188'
  last_name: Kelber
- first_name: Steffen
  full_name: Brück, Steffen
  last_name: Brück
- first_name: Nishant
  full_name: Bhardwaj, Nishant
  last_name: Bhardwaj
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Rolf
  full_name: Naumann, Rolf
  last_name: Naumann
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Kelber M, Brück S, Bhardwaj N, Aimiyekagbon OK, Naumann R, Sextro W. Methodik
    zur Untersuchung der Fahrwerksparameter von Schienenfahrzeugen auf Basis optischer
    Schwingungsmessungen an einer ortsfesten Messstelle. In: Hochschule für Technik
    und Wirtschaft Dresden, Fakultät Maschinenbau, ed. <i>Tagungsband Rad-Schiene-Tagung
    2026</i>. DVV Media Group GmbH - Eurailpress; 2026:206 – 208.'
  apa: Kelber, M., Brück, S., Bhardwaj, N., Aimiyekagbon, O. K., Naumann, R., &#38;
    Sextro, W. (2026). Methodik zur Untersuchung der Fahrwerksparameter von Schienenfahrzeugen
    auf Basis optischer Schwingungsmessungen an einer ortsfesten Messstelle. In Hochschule
    für Technik und Wirtschaft Dresden, Fakultät Maschinenbau (Ed.), <i>Tagungsband
    Rad-Schiene-Tagung 2026</i> (pp. 206 – 208). DVV Media Group GmbH - Eurailpress.
  bibtex: '@inproceedings{Kelber_Brück_Bhardwaj_Aimiyekagbon_Naumann_Sextro_2026,
    place={Hamburg}, title={Methodik zur Untersuchung der Fahrwerksparameter von Schienenfahrzeugen
    auf Basis optischer Schwingungsmessungen an einer ortsfesten Messstelle}, booktitle={Tagungsband
    Rad-Schiene-Tagung 2026}, publisher={DVV Media Group GmbH - Eurailpress}, author={Kelber,
    Max and Brück, Steffen and Bhardwaj, Nishant and Aimiyekagbon, Osarenren Kennedy
    and Naumann, Rolf and Sextro, Walter}, editor={Hochschule für Technik und Wirtschaft
    Dresden, Fakultät Maschinenbau}, year={2026}, pages={206 – 208} }'
  chicago: 'Kelber, Max, Steffen Brück, Nishant Bhardwaj, Osarenren Kennedy Aimiyekagbon,
    Rolf Naumann, and Walter Sextro. “Methodik zur Untersuchung der Fahrwerksparameter
    von Schienenfahrzeugen auf Basis optischer Schwingungsmessungen an einer ortsfesten
    Messstelle.” In <i>Tagungsband Rad-Schiene-Tagung 2026</i>, edited by Hochschule
    für Technik und Wirtschaft Dresden, Fakultät Maschinenbau, 206 – 208. Hamburg:
    DVV Media Group GmbH - Eurailpress, 2026.'
  ieee: M. Kelber, S. Brück, N. Bhardwaj, O. K. Aimiyekagbon, R. Naumann, and W. Sextro,
    “Methodik zur Untersuchung der Fahrwerksparameter von Schienenfahrzeugen auf Basis
    optischer Schwingungsmessungen an einer ortsfesten Messstelle,” in <i>Tagungsband
    Rad-Schiene-Tagung 2026</i>, Dresden, 2026, pp. 206 – 208.
  mla: Kelber, Max, et al. “Methodik zur Untersuchung der Fahrwerksparameter von Schienenfahrzeugen
    auf Basis optischer Schwingungsmessungen an einer ortsfesten Messstelle.” <i>Tagungsband
    Rad-Schiene-Tagung 2026</i>, edited by Hochschule für Technik und Wirtschaft Dresden,
    Fakultät Maschinenbau, DVV Media Group GmbH - Eurailpress, 2026, pp. 206 – 208.
  short: 'M. Kelber, S. Brück, N. Bhardwaj, O.K. Aimiyekagbon, R. Naumann, W. Sextro,
    in: Hochschule für Technik und Wirtschaft Dresden, Fakultät Maschinenbau (Ed.),
    Tagungsband Rad-Schiene-Tagung 2026, DVV Media Group GmbH - Eurailpress, Hamburg,
    2026, pp. 206 – 208.'
conference:
  end_date: 2026-03-06
  location: Dresden
  name: 21. Internationale Schienenfahrzeugtagung Dresden 4.-6. März 2026
  start_date: 2026-03-04
corporate_editor:
- Hochschule für Technik und Wirtschaft Dresden, Fakultät Maschinenbau
date_created: 2026-03-04T10:26:27Z
date_updated: 2026-03-04T10:38:28Z
department:
- _id: '151'
language:
- iso: ger
page: 206 – 208
place: Hamburg
popular_science: '1'
project:
- _id: '1355'
  name: enableATO – Automatisierter Bahnverkehr als Backbone für eine nachhaltige,
    vernetzte Mobilität im ländlichen Raum
publication: Tagungsband Rad-Schiene-Tagung 2026
publication_identifier:
  isbn:
  - 978-3-96892-332-1
publication_status: published
publisher: DVV Media Group GmbH - Eurailpress
status: public
title: Methodik zur Untersuchung der Fahrwerksparameter von Schienenfahrzeugen auf
  Basis optischer Schwingungsmessungen an einer ortsfesten Messstelle
type: conference
user_id: '70188'
year: '2026'
...
---
_id: '64787'
abstract:
- lang: eng
  text: This study proposes a fault diagnostics methodology that addresses the challenges
    posed by highly imbalanced datasets typical of railway applications, where faulty
    conditions constitute the minority class. Fault diagnostics is performed from
    the component level upward, considering each sensor’s proximity to its respective
    critical component. Advanced signal analysis, feature engineering, and automated
    data-driven model generation techniques were explored to achieve comprehensive
    diagnostics, such that the model development process accounts for variations in
    the operating conditions and differing levels of information availability. The
    proposed methodology is evaluated on datasets from the MONOCAB, for scenarios
    with limited faulty instances and on the Beijing 2024 IEEE PHM Conference data
    challenge, which focused on fault diagnostics of railway systems under various
    fault modes and operating conditions.
article_number: '1'
author:
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Alexander
  full_name: Löwen, Alexander
  id: '47233'
  last_name: Löwen
- first_name: Raphael
  full_name: Hanselle, Raphael
  last_name: Hanselle
- first_name: Thomas
  full_name: Rief, Thomas
  last_name: Rief
- first_name: Maximilian
  full_name: Beck, Maximilian
  last_name: Beck
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Aimiyekagbon OK, Löwen A, Hanselle R, Rief T, Beck M, Sextro W. Multilevel
    fault diagnostics for railway applications using limited historical data. In:
    <i>PHM Society Asia-Pacific Conference</i>. Vol 5. ; 2025. doi:<a href="https://doi.org/10.36001/phmap.2025.v5i1.4449">10.36001/phmap.2025.v5i1.4449</a>'
  apa: Aimiyekagbon, O. K., Löwen, A., Hanselle, R., Rief, T., Beck, M., &#38; Sextro,
    W. (2025). Multilevel fault diagnostics for railway applications using limited
    historical data. <i>PHM Society Asia-Pacific Conference</i>, <i>5</i>, Article
    1. <a href="https://doi.org/10.36001/phmap.2025.v5i1.4449">https://doi.org/10.36001/phmap.2025.v5i1.4449</a>
  bibtex: '@inproceedings{Aimiyekagbon_Löwen_Hanselle_Rief_Beck_Sextro_2025, title={Multilevel
    fault diagnostics for railway applications using limited historical data}, volume={5},
    DOI={<a href="https://doi.org/10.36001/phmap.2025.v5i1.4449">10.36001/phmap.2025.v5i1.4449</a>},
    number={1}, booktitle={PHM Society Asia-Pacific Conference}, author={Aimiyekagbon,
    Osarenren Kennedy and Löwen, Alexander and Hanselle, Raphael and Rief, Thomas
    and Beck, Maximilian and Sextro, Walter}, year={2025} }'
  chicago: Aimiyekagbon, Osarenren Kennedy, Alexander Löwen, Raphael Hanselle, Thomas
    Rief, Maximilian Beck, and Walter Sextro. “Multilevel Fault Diagnostics for Railway
    Applications Using Limited Historical Data.” In <i>PHM Society Asia-Pacific Conference</i>,
    Vol. 5, 2025. <a href="https://doi.org/10.36001/phmap.2025.v5i1.4449">https://doi.org/10.36001/phmap.2025.v5i1.4449</a>.
  ieee: 'O. K. Aimiyekagbon, A. Löwen, R. Hanselle, T. Rief, M. Beck, and W. Sextro,
    “Multilevel fault diagnostics for railway applications using limited historical
    data,” in <i>PHM Society Asia-Pacific Conference</i>, 2025, vol. 5, doi: <a href="https://doi.org/10.36001/phmap.2025.v5i1.4449">10.36001/phmap.2025.v5i1.4449</a>.'
  mla: Aimiyekagbon, Osarenren Kennedy, et al. “Multilevel Fault Diagnostics for Railway
    Applications Using Limited Historical Data.” <i>PHM Society Asia-Pacific Conference</i>,
    vol. 5, 1, 2025, doi:<a href="https://doi.org/10.36001/phmap.2025.v5i1.4449">10.36001/phmap.2025.v5i1.4449</a>.
  short: 'O.K. Aimiyekagbon, A. Löwen, R. Hanselle, T. Rief, M. Beck, W. Sextro, in:
    PHM Society Asia-Pacific Conference, 2025.'
date_created: 2026-02-27T20:41:54Z
date_updated: 2026-02-27T20:46:44Z
department:
- _id: '151'
doi: 10.36001/phmap.2025.v5i1.4449
intvolume: '         5'
keyword:
- MONOCAB
- Beijing Data Challenge
- Diagnostics of railway systems
language:
- iso: eng
project:
- _id: '1355'
  name: enableATO – Automatisierter Bahnverkehr als Backbone für eine nachhaltige,
    vernetzte Mobilität im ländlichen Raum
publication: PHM Society Asia-Pacific Conference
publication_status: published
quality_controlled: '1'
status: public
title: Multilevel fault diagnostics for railway applications using limited historical
  data
type: conference
user_id: '9557'
volume: 5
year: '2025'
...
---
_id: '63193'
abstract:
- lang: eng
  text: The integration of data-driven models and specifically machine learning for
    conditon monitoring and predictive maintenance into companies, especially small
    and medium-sized enterprises, offers significant opportunities in reducing costs,
    operating more sustainably, and maintaining long-term competitiveness. However,
    many small and medium-sized enterprises lack the necessary resources and expertise
    to derive knowledge from data and integrate their own machine learning based solutions.
    To address this challenge, a framework is presented that enables the automated
    generation of data-driven models with a particular focus on condition monitoring
    and predictive maintenance, but applicable to other use cases as well. Using a
    dataset from the 2022 data challenge of the prognostics and health management
    society, it is demonstrated that the framework can generate high-performing models,
    achieving F1-scores up to 0.998, exemplarily for a classification task.
author:
- first_name: Alexander
  full_name: Löwen, Alexander
  id: '47233'
  last_name: Löwen
- first_name: Dennis
  full_name: Quirin, Dennis
  last_name: Quirin
- first_name: Marc
  full_name: Hesse, Marc
  last_name: Hesse
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Löwen A, Quirin D, Hesse M, Aimiyekagbon OK, Sextro W. Facilitating the Automated
    Generation of Data-Driven Models for the Diagnostics and Prognostics of Technical
    Systems. In: <i>2025 IEEE 30th International Conference on Emerging Technologies
    and Factory Automation (ETFA)</i>. IEEE; 2025. doi:<a href="https://doi.org/10.1109/etfa65518.2025.11205799">10.1109/etfa65518.2025.11205799</a>'
  apa: Löwen, A., Quirin, D., Hesse, M., Aimiyekagbon, O. K., &#38; Sextro, W. (2025).
    Facilitating the Automated Generation of Data-Driven Models for the Diagnostics
    and Prognostics of Technical Systems. <i>2025 IEEE 30th International Conference
    on Emerging Technologies and Factory Automation (ETFA)</i>. 2025 IEEE 30th International
    Conference on Emerging Technologies and Factory Automation (ETFA), Porto. <a href="https://doi.org/10.1109/etfa65518.2025.11205799">https://doi.org/10.1109/etfa65518.2025.11205799</a>
  bibtex: '@inproceedings{Löwen_Quirin_Hesse_Aimiyekagbon_Sextro_2025, title={Facilitating
    the Automated Generation of Data-Driven Models for the Diagnostics and Prognostics
    of Technical Systems}, DOI={<a href="https://doi.org/10.1109/etfa65518.2025.11205799">10.1109/etfa65518.2025.11205799</a>},
    booktitle={2025 IEEE 30th International Conference on Emerging Technologies and
    Factory Automation (ETFA)}, publisher={IEEE}, author={Löwen, Alexander and Quirin,
    Dennis and Hesse, Marc and Aimiyekagbon, Osarenren Kennedy and Sextro, Walter},
    year={2025} }'
  chicago: Löwen, Alexander, Dennis Quirin, Marc Hesse, Osarenren Kennedy Aimiyekagbon,
    and Walter Sextro. “Facilitating the Automated Generation of Data-Driven Models
    for the Diagnostics and Prognostics of Technical Systems.” In <i>2025 IEEE 30th
    International Conference on Emerging Technologies and Factory Automation (ETFA)</i>.
    IEEE, 2025. <a href="https://doi.org/10.1109/etfa65518.2025.11205799">https://doi.org/10.1109/etfa65518.2025.11205799</a>.
  ieee: 'A. Löwen, D. Quirin, M. Hesse, O. K. Aimiyekagbon, and W. Sextro, “Facilitating
    the Automated Generation of Data-Driven Models for the Diagnostics and Prognostics
    of Technical Systems,” presented at the 2025 IEEE 30th International Conference
    on Emerging Technologies and Factory Automation (ETFA), Porto, 2025, doi: <a href="https://doi.org/10.1109/etfa65518.2025.11205799">10.1109/etfa65518.2025.11205799</a>.'
  mla: Löwen, Alexander, et al. “Facilitating the Automated Generation of Data-Driven
    Models for the Diagnostics and Prognostics of Technical Systems.” <i>2025 IEEE
    30th International Conference on Emerging Technologies and Factory Automation
    (ETFA)</i>, IEEE, 2025, doi:<a href="https://doi.org/10.1109/etfa65518.2025.11205799">10.1109/etfa65518.2025.11205799</a>.
  short: 'A. Löwen, D. Quirin, M. Hesse, O.K. Aimiyekagbon, W. Sextro, in: 2025 IEEE
    30th International Conference on Emerging Technologies and Factory Automation
    (ETFA), IEEE, 2025.'
conference:
  location: Porto
  name: 2025 IEEE 30th International Conference on Emerging Technologies and Factory
    Automation (ETFA)
date_created: 2025-12-18T09:07:38Z
date_updated: 2025-12-18T09:12:48Z
department:
- _id: '151'
doi: 10.1109/etfa65518.2025.11205799
language:
- iso: eng
project:
- _id: '1483'
  name: Industrie 4.0 Ökosystem für den automatisierten Einsatz von datengetriebenen
    Services (I4.0AutoServ)
publication: 2025 IEEE 30th International Conference on Emerging Technologies and
  Factory Automation (ETFA)
publication_status: published
publisher: IEEE
related_material:
  link:
  - relation: confirmation
    url: https://ieeexplore.ieee.org/document/11205799
status: public
title: Facilitating the Automated Generation of Data-Driven Models for the Diagnostics
  and Prognostics of Technical Systems
type: conference
user_id: '47233'
year: '2025'
...
---
_id: '51518'
abstract:
- lang: eng
  text: In applications of piezoelectric actuators and sensors, the dependability
    and particularly the reliability throughout their lifetime are vital to manufacturers
    and end-users and are enabled through condition-monitoring approaches. Existing
    approaches often utilize impedance measurements over a range of frequencies or
    velocity measurements and require additional equipment or sensors, such as a laser
    Doppler vibrometer. Furthermore, the non-negligible effects of varying operating
    conditions are often unconsidered. To minimize the need for additional sensors
    while maintaining the dependability of piezoelectric bending actuators irrespective
    of varying operating conditions, an online diagnostics approach is proposed. To
    this end, time- and frequency-domain features are extracted from monitored current
    signals to reflect hairline crack development in bending actuators. For validation
    of applicability, the presented analysis method was evaluated on piezoelectric
    bending actuators subjected to accelerated lifetime tests at varying voltage amplitudes
    and under external damping conditions. In the presence of a crack and due to a
    diminished stiffness, the resonance frequency decreases and the root-mean-square
    amplitude of the current signal simultaneously abruptly drops during the lifetime
    tests. Furthermore, the piezoelectric crack surfaces clapping is reflected in
    higher harmonics of the current signal. Thus, time-domain features and harmonics
    of the current signals are sufficient to diagnose hairline cracks in the actuators.
article_number: '521'
article_type: original
author:
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Amelie
  full_name: Bender, Amelie
  id: '54290'
  last_name: Bender
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: Aimiyekagbon OK, Bender A, Hemsel T, Sextro W. Diagnostics of Piezoelectric
    Bending Actuators Subjected to Varying Operating Conditions. <i>Electronics</i>.
    2024;13(3). doi:<a href="https://doi.org/10.3390/electronics13030521">10.3390/electronics13030521</a>
  apa: Aimiyekagbon, O. K., Bender, A., Hemsel, T., &#38; Sextro, W. (2024). Diagnostics
    of Piezoelectric Bending Actuators Subjected to Varying Operating Conditions.
    <i>Electronics</i>, <i>13</i>(3), Article 521. <a href="https://doi.org/10.3390/electronics13030521">https://doi.org/10.3390/electronics13030521</a>
  bibtex: '@article{Aimiyekagbon_Bender_Hemsel_Sextro_2024, title={Diagnostics of
    Piezoelectric Bending Actuators Subjected to Varying Operating Conditions}, volume={13},
    DOI={<a href="https://doi.org/10.3390/electronics13030521">10.3390/electronics13030521</a>},
    number={3521}, journal={Electronics}, publisher={MDPI AG}, author={Aimiyekagbon,
    Osarenren Kennedy and Bender, Amelie and Hemsel, Tobias and Sextro, Walter}, year={2024}
    }'
  chicago: Aimiyekagbon, Osarenren Kennedy, Amelie Bender, Tobias Hemsel, and Walter
    Sextro. “Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating
    Conditions.” <i>Electronics</i> 13, no. 3 (2024). <a href="https://doi.org/10.3390/electronics13030521">https://doi.org/10.3390/electronics13030521</a>.
  ieee: 'O. K. Aimiyekagbon, A. Bender, T. Hemsel, and W. Sextro, “Diagnostics of
    Piezoelectric Bending Actuators Subjected to Varying Operating Conditions,” <i>Electronics</i>,
    vol. 13, no. 3, Art. no. 521, 2024, doi: <a href="https://doi.org/10.3390/electronics13030521">10.3390/electronics13030521</a>.'
  mla: Aimiyekagbon, Osarenren Kennedy, et al. “Diagnostics of Piezoelectric Bending
    Actuators Subjected to Varying Operating Conditions.” <i>Electronics</i>, vol.
    13, no. 3, 521, MDPI AG, 2024, doi:<a href="https://doi.org/10.3390/electronics13030521">10.3390/electronics13030521</a>.
  short: O.K. Aimiyekagbon, A. Bender, T. Hemsel, W. Sextro, Electronics 13 (2024).
date_created: 2024-02-20T06:46:43Z
date_updated: 2024-03-15T16:15:56Z
department:
- _id: '151'
doi: 10.3390/electronics13030521
funded_apc: '1'
intvolume: '        13'
issue: '3'
keyword:
- piezoelectric transducer
- self-sensing
- fault detection
- diagnostics
- hairline crack
- condition monitoring
language:
- iso: eng
publication: Electronics
publication_identifier:
  issn:
  - 2079-9292
publication_status: published
publisher: MDPI AG
quality_controlled: '1'
status: public
title: Diagnostics of Piezoelectric Bending Actuators Subjected to Varying Operating
  Conditions
type: journal_article
user_id: '9557'
volume: 13
year: '2024'
...
---
_id: '55336'
abstract:
- lang: eng
  text: "Predicting the remaining useful life of technical \r\nsystems has gained
    significant attention in recent years due to \r\nincreasing demands for extending
    the lifespan of degrading system \r\ncomponents. Therefore, already used systems
    are retrofitted by \r\nintegrating sensors to monitor their performance and \r\nfunctionality,
    enabling accurate diagnosis of their condition and \r\nprediction of their remaining
    useful life. One of the main \r\nchallenges in this field is identified in the
    missing data from the \r\ntime where the retrofitted system has already run but
    without \r\nbeing monitored by sensors. In this paper, a novel approach for \r\nthe
    combined diagnostics and prognostics of retrofitted systems is \r\nproposed. The
    methodology aims to provide an accurate diagnosis \r\nof the system’s health state
    and estimation of the remaining useful \r\nlife by a combination of a machine
    learning and expert knowledge. \r\nTo evaluate the effectiveness of the proposed
    methodology, a case \r\nstudy involving a retrofitted system in an industrial
    setting is \r\nselected and applied. It is demonstrated that the approach \r\neffectively
    diagnose the current system’s health state and \r\naccurately predict its remaining
    useful life, thereby enabling \r\npredictive maintenance and decision-making.
    Overall, our \r\nresearch contributes to advancing the field of condition \r\nmonitoring
    for retrofitted systems by providing a comprehensive \r\nmethodology that addresses
    the challenge of missing data."
author:
- first_name: Amelie
  full_name: Bender, Amelie
  id: '54290'
  last_name: Bender
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Bender A, Aimiyekagbon OK, Sextro W. Diagnostics and Prognostics for Retrofitted
    Systems: A Comprehensive Approach for Enhanced System Health Assessment. In: <i>Proceedings
    of the 2024 Prognostics and System Health Management Conference (PHM)</i>. IEEE
    Computer Society; 2024. doi:<a href="https://doi.org/10.1109/PHM61473.2024.00038">10.1109/PHM61473.2024.00038</a>'
  apa: 'Bender, A., Aimiyekagbon, O. K., &#38; Sextro, W. (2024). Diagnostics and
    Prognostics for Retrofitted Systems: A Comprehensive Approach for Enhanced System
    Health Assessment. <i>Proceedings of the 2024 Prognostics and System Health Management
    Conference (PHM)</i>. 2024 Prognostics and System Health Management Conference
    (PHM), Stockholm, Schweden. <a href="https://doi.org/10.1109/PHM61473.2024.00038">https://doi.org/10.1109/PHM61473.2024.00038</a>'
  bibtex: '@inproceedings{Bender_Aimiyekagbon_Sextro_2024, title={Diagnostics and
    Prognostics for Retrofitted Systems: A Comprehensive Approach for Enhanced System
    Health Assessment}, DOI={<a href="https://doi.org/10.1109/PHM61473.2024.00038">10.1109/PHM61473.2024.00038</a>},
    booktitle={Proceedings of the 2024 Prognostics and System Health Management Conference
    (PHM)}, publisher={IEEE Computer Society}, author={Bender, Amelie and Aimiyekagbon,
    Osarenren Kennedy and Sextro, Walter}, year={2024} }'
  chicago: 'Bender, Amelie, Osarenren Kennedy Aimiyekagbon, and Walter Sextro. “Diagnostics
    and Prognostics for Retrofitted Systems: A Comprehensive Approach for Enhanced
    System Health Assessment.” In <i>Proceedings of the 2024 Prognostics and System
    Health Management Conference (PHM)</i>. IEEE Computer Society, 2024. <a href="https://doi.org/10.1109/PHM61473.2024.00038">https://doi.org/10.1109/PHM61473.2024.00038</a>.'
  ieee: 'A. Bender, O. K. Aimiyekagbon, and W. Sextro, “Diagnostics and Prognostics
    for Retrofitted Systems: A Comprehensive Approach for Enhanced System Health Assessment,”
    presented at the 2024 Prognostics and System Health Management Conference (PHM),
    Stockholm, Schweden, 2024, doi: <a href="https://doi.org/10.1109/PHM61473.2024.00038">10.1109/PHM61473.2024.00038</a>.'
  mla: 'Bender, Amelie, et al. “Diagnostics and Prognostics for Retrofitted Systems:
    A Comprehensive Approach for Enhanced System Health Assessment.” <i>Proceedings
    of the 2024 Prognostics and System Health Management Conference (PHM)</i>, IEEE
    Computer Society, 2024, doi:<a href="https://doi.org/10.1109/PHM61473.2024.00038">10.1109/PHM61473.2024.00038</a>.'
  short: 'A. Bender, O.K. Aimiyekagbon, W. Sextro, in: Proceedings of the 2024 Prognostics
    and System Health Management Conference (PHM), IEEE Computer Society, 2024.'
conference:
  end_date: 2024-05-31
  location: Stockholm, Schweden
  name: 2024 Prognostics and System Health Management Conference (PHM)
  start_date: 2024-05-28
date_created: 2024-07-22T09:27:57Z
date_updated: 2024-07-22T09:29:26Z
department:
- _id: '151'
doi: 10.1109/PHM61473.2024.00038
keyword:
- retrofit
- diagnosis
- prognostics
- RUL prediction
- missing data
- ball bearings
language:
- iso: eng
publication: Proceedings of the 2024 Prognostics and System Health Management Conference
  (PHM)
publication_identifier:
  isbn:
  - 979-8-3503-6058-5
publisher: IEEE Computer Society
quality_controlled: '1'
status: public
title: 'Diagnostics and Prognostics for Retrofitted Systems: A Comprehensive Approach
  for Enhanced System Health Assessment'
type: conference
user_id: '54290'
year: '2024'
...
---
_id: '55631'
abstract:
- lang: eng
  text: This paper investigates the remaining useful lifetime (RUL) estimation of
    bearings under dynamic, i.e., time-varying, operating conditions (OC). Unlike
    conventional studies that assume constant OC in bearing accelerated life tests,
    we introduce a dataset with time-varying OC during run-to-failure experiments,
    simulating real-world scenarios. We explore data-driven approaches to identify
    the transition point from a healthy to an unhealthy state and estimate the RUL.
    Additionally, we examine strategies for integrating OC information to enhance
    RUL estimations. These methodologies are evaluated through numerical experiments
    using various machine learning algorithms.
article_number: '9'
author:
- first_name: Alireza
  full_name: Javanmardi, Alireza
  last_name: Javanmardi
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Amelie
  full_name: Bender, Amelie
  id: '54290'
  last_name: Bender
- first_name: James Kuria
  full_name: Kimotho, James Kuria
  last_name: Kimotho
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Eyke
  full_name: Hüllermeier, Eyke
  id: '48129'
  last_name: Hüllermeier
citation:
  ama: 'Javanmardi A, Aimiyekagbon OK, Bender A, Kimotho JK, Sextro W, Hüllermeier
    E. Remaining Useful Lifetime Estimation of Bearings Operating under Time-Varying
    Conditions. In: <i>PHM Society European Conference</i>. Vol 8. PHM Society; 2024.
    doi:<a href="https://doi.org/10.36001/phme.2024.v8i1.4101">10.36001/phme.2024.v8i1.4101</a>'
  apa: Javanmardi, A., Aimiyekagbon, O. K., Bender, A., Kimotho, J. K., Sextro, W.,
    &#38; Hüllermeier, E. (2024). Remaining Useful Lifetime Estimation of Bearings
    Operating under Time-Varying Conditions. <i>PHM Society European Conference</i>,
    <i>8</i>(1), Article 9. <a href="https://doi.org/10.36001/phme.2024.v8i1.4101">https://doi.org/10.36001/phme.2024.v8i1.4101</a>
  bibtex: '@inproceedings{Javanmardi_Aimiyekagbon_Bender_Kimotho_Sextro_Hüllermeier_2024,
    title={Remaining Useful Lifetime Estimation of Bearings Operating under Time-Varying
    Conditions}, volume={8}, DOI={<a href="https://doi.org/10.36001/phme.2024.v8i1.4101">10.36001/phme.2024.v8i1.4101</a>},
    number={19}, booktitle={PHM Society European Conference}, publisher={PHM Society},
    author={Javanmardi, Alireza and Aimiyekagbon, Osarenren Kennedy and Bender, Amelie
    and Kimotho, James Kuria and Sextro, Walter and Hüllermeier, Eyke}, year={2024}
    }'
  chicago: Javanmardi, Alireza, Osarenren Kennedy Aimiyekagbon, Amelie Bender, James
    Kuria Kimotho, Walter Sextro, and Eyke Hüllermeier. “Remaining Useful Lifetime
    Estimation of Bearings Operating under Time-Varying Conditions.” In <i>PHM Society
    European Conference</i>, Vol. 8. PHM Society, 2024. <a href="https://doi.org/10.36001/phme.2024.v8i1.4101">https://doi.org/10.36001/phme.2024.v8i1.4101</a>.
  ieee: 'A. Javanmardi, O. K. Aimiyekagbon, A. Bender, J. K. Kimotho, W. Sextro, and
    E. Hüllermeier, “Remaining Useful Lifetime Estimation of Bearings Operating under
    Time-Varying Conditions,” in <i>PHM Society European Conference</i>, Prague, Czech
    Republic, 2024, vol. 8, no. 1, doi: <a href="https://doi.org/10.36001/phme.2024.v8i1.4101">10.36001/phme.2024.v8i1.4101</a>.'
  mla: Javanmardi, Alireza, et al. “Remaining Useful Lifetime Estimation of Bearings
    Operating under Time-Varying Conditions.” <i>PHM Society European Conference</i>,
    vol. 8, no. 1, 9, PHM Society, 2024, doi:<a href="https://doi.org/10.36001/phme.2024.v8i1.4101">10.36001/phme.2024.v8i1.4101</a>.
  short: 'A. Javanmardi, O.K. Aimiyekagbon, A. Bender, J.K. Kimotho, W. Sextro, E.
    Hüllermeier, in: PHM Society European Conference, PHM Society, 2024.'
conference:
  end_date: 2024-07-05
  location: Prague, Czech Republic
  name: 8th European Conference of the Prognostics and Health Management Society 2024
  start_date: 2024-07-03
date_created: 2024-08-19T07:41:32Z
date_updated: 2025-02-10T10:37:52Z
department:
- _id: '151'
doi: 10.36001/phme.2024.v8i1.4101
intvolume: '         8'
issue: '1'
language:
- iso: eng
publication: PHM Society European Conference
publication_identifier:
  isbn:
  - 978-1-936263-40-0
publication_status: published
publisher: PHM Society
quality_controlled: '1'
status: public
title: Remaining Useful Lifetime Estimation of Bearings Operating under Time-Varying
  Conditions
type: conference
user_id: '9557'
volume: 8
year: '2024'
...
---
_id: '47116'
abstract:
- lang: eng
  text: This paper presents a comprehensive study on diagnosing a spacecraft propulsion
    system utilizing data provided by the Prognostics and Health Management (PHM)
    society, specifically obtained as part of the Asia-Pacific PHM conference’s data
    challenge 2023. The objective of the challenge is to identify and diagnose known
    faults as well as unknown anomalies in the spacecraft’s propulsion system, which
    is critical for ensuring the spacecraft’s proper functionality and safety. To
    address this challenge, the proposed method follows a systematic approach of feature
    extraction, feature selection, and model development. The models employed in this
    study are kMeans clustering and decision trees combined to ensembles, enriched
    with expert knowledge. With the method presented, our team was capable of reaching
    high accuracy in identifying anomalies as well as diagnosing faults, resulting
    in attaining the seventh place with a score of 93.08 %.
author:
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Alexander
  full_name: Löwen, Alexander
  id: '47233'
  last_name: Löwen
- first_name: Amelie
  full_name: Bender, Amelie
  id: '54290'
  last_name: Bender
- first_name: Lars
  full_name: Muth, Lars
  id: '77313'
  last_name: Muth
  orcid: 0000-0002-2938-5616
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Aimiyekagbon OK, Löwen A, Bender A, Muth L, Sextro W. Expert-Informed Hierarchical
    Diagnostics of Multiple Fault Modes of a Spacecraft Propulsion System. In: <i>Proceedings
    of the Asia Pacific Conference of the PHM Society 2023 </i>. Vol 4. ; 2023. doi:<a
    href="https://doi.org/10.36001/phmap.2023.v4i1.3596">10.36001/phmap.2023.v4i1.3596</a>'
  apa: Aimiyekagbon, O. K., Löwen, A., Bender, A., Muth, L., &#38; Sextro, W. (2023).
    Expert-Informed Hierarchical Diagnostics of Multiple Fault Modes of a Spacecraft
    Propulsion System. <i>Proceedings of the Asia Pacific Conference of the PHM Society
    2023 </i>, <i>4</i>(1). <a href="https://doi.org/10.36001/phmap.2023.v4i1.3596">https://doi.org/10.36001/phmap.2023.v4i1.3596</a>
  bibtex: '@inproceedings{Aimiyekagbon_Löwen_Bender_Muth_Sextro_2023, title={Expert-Informed
    Hierarchical Diagnostics of Multiple Fault Modes of a Spacecraft Propulsion System},
    volume={4}, DOI={<a href="https://doi.org/10.36001/phmap.2023.v4i1.3596">10.36001/phmap.2023.v4i1.3596</a>},
    number={1}, booktitle={Proceedings of the Asia Pacific Conference of the PHM Society
    2023 }, author={Aimiyekagbon, Osarenren Kennedy and Löwen, Alexander and Bender,
    Amelie and Muth, Lars and Sextro, Walter}, year={2023} }'
  chicago: Aimiyekagbon, Osarenren Kennedy, Alexander Löwen, Amelie Bender, Lars Muth,
    and Walter Sextro. “Expert-Informed Hierarchical Diagnostics of Multiple Fault
    Modes of a Spacecraft Propulsion System.” In <i>Proceedings of the Asia Pacific
    Conference of the PHM Society 2023 </i>, Vol. 4, 2023. <a href="https://doi.org/10.36001/phmap.2023.v4i1.3596">https://doi.org/10.36001/phmap.2023.v4i1.3596</a>.
  ieee: 'O. K. Aimiyekagbon, A. Löwen, A. Bender, L. Muth, and W. Sextro, “Expert-Informed
    Hierarchical Diagnostics of Multiple Fault Modes of a Spacecraft Propulsion System,”
    in <i>Proceedings of the Asia Pacific Conference of the PHM Society 2023 </i>,
    2023, vol. 4, no. 1, doi: <a href="https://doi.org/10.36001/phmap.2023.v4i1.3596">10.36001/phmap.2023.v4i1.3596</a>.'
  mla: Aimiyekagbon, Osarenren Kennedy, et al. “Expert-Informed Hierarchical Diagnostics
    of Multiple Fault Modes of a Spacecraft Propulsion System.” <i>Proceedings of
    the Asia Pacific Conference of the PHM Society 2023 </i>, vol. 4, no. 1, 2023,
    doi:<a href="https://doi.org/10.36001/phmap.2023.v4i1.3596">10.36001/phmap.2023.v4i1.3596</a>.
  short: 'O.K. Aimiyekagbon, A. Löwen, A. Bender, L. Muth, W. Sextro, in: Proceedings
    of the Asia Pacific Conference of the PHM Society 2023 , 2023.'
date_created: 2023-09-18T07:52:32Z
date_updated: 2024-08-19T07:39:12Z
department:
- _id: '151'
doi: 10.36001/phmap.2023.v4i1.3596
intvolume: '         4'
issue: '1'
keyword:
- PHM
- Fault Diagnostics
- Multiple Fault Modes
- Expert-Informed Diagnostics
- Anomaly Detection
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://www.papers.phmsociety.org/index.php/phmap/article/view/3596
oa: '1'
publication: 'Proceedings of the Asia Pacific Conference of the PHM Society 2023 '
quality_controlled: '1'
status: public
title: Expert-Informed Hierarchical Diagnostics of Multiple Fault Modes of a Spacecraft
  Propulsion System
type: conference
user_id: '9557'
volume: 4
year: '2023'
...
---
_id: '47159'
author:
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Amelie
  full_name: Bender, Amelie
  id: '54290'
  last_name: Bender
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: Aimiyekagbon OK, Bender A, Sextro W. On the applicability of time series features
    as health indicators for technical systems operating under varying conditions.
    <i> Condition Monitor</i>. 2022:5-10.
  apa: Aimiyekagbon, O. K., Bender, A., &#38; Sextro, W. (2022). On the applicability
    of time series features as health indicators for technical systems operating under
    varying conditions. <i> Condition Monitor</i>, <i>425</i>, 5–10.
  bibtex: '@article{Aimiyekagbon_Bender_Sextro_2022, title={On the applicability of
    time series features as health indicators for technical systems operating under
    varying conditions}, number={425}, journal={ Condition Monitor}, author={Aimiyekagbon,
    Osarenren Kennedy and Bender, Amelie and Sextro, Walter}, year={2022}, pages={5–10}
    }'
  chicago: Aimiyekagbon, Osarenren Kennedy, Amelie Bender, and Walter Sextro. “On
    the Applicability of Time Series Features as Health Indicators for Technical Systems
    Operating under Varying Conditions.” <i> Condition Monitor</i>, 2022.
  ieee: O. K. Aimiyekagbon, A. Bender, and W. Sextro, “On the applicability of time
    series features as health indicators for technical systems operating under varying
    conditions,” <i> Condition Monitor</i>, no. 425, pp. 5–10, 2022.
  mla: Aimiyekagbon, Osarenren Kennedy, et al. “On the Applicability of Time Series
    Features as Health Indicators for Technical Systems Operating under Varying Conditions.”
    <i> Condition Monitor</i>, no. 425, 2022, pp. 5–10.
  short: O.K. Aimiyekagbon, A. Bender, W. Sextro,  Condition Monitor (2022) 5–10.
date_created: 2023-09-22T09:25:48Z
date_updated: 2023-09-22T09:29:51Z
department:
- _id: '151'
issue: '425'
language:
- iso: eng
page: 5 - 10
publication: ' Condition Monitor'
publication_date: 2022-08
publication_identifier:
  issn:
  - 0268-8050
publication_status: published
status: public
title: On the applicability of time series features as health indicators for technical
  systems operating under varying conditions
type: newspaper_article
user_id: '9557'
year: '2022'
...
---
_id: '27652'
abstract:
- lang: ger
  text: "Aufgrund der Fortschritte der Digitalisierung finden Systeme zur Zustandsüberwachung
    vermehrt Einsatz in der Industrie, um durch eine zustandsbasierte oder eine prädiktive
    Instandhaltung Vorteile, wie eine verbesserte Zuverlässigkeit und geringere Kosten
    zu erzielen. Dabei beruhen Zustandsüberwachungssysteme auf den folgenden Bausteinen:
    Sensorik, Datenvorverarbeitung, Merkmalsextraktion und -auswahl, Diagnose bzw.
    Prognose sowie einer Entscheidungsfindung basierend auf den Ergebnissen. Jeder
    dieser Bausteine erfordert individuelle Einstellungen, um ein geeignetes Zustandsüberwachungssystem
    für die jeweilige Anwendung zu entwickeln. Eine offene Fragestellung im Bereich
    der Zustandsüberwachung ergibt sich aufgrund der Unsicherheit der Zukunft, die
    sich in den zukünftigen Betriebs- und Umgebungsbedingungen zeigt. Diese Unsicherheit
    gilt es in allen Bausteinen zu berücksichtigen.\r\nDieser Beitrag konzentriert
    sich auf den Baustein Merkmalsextraktion und -selektion, mit dem Ziel anhand geeigneter
    Merkmale eine Prognose der nutzbaren Restlebensdauer mit hoher Genauigkeit realisieren
    zu können. Daher werden geeignete Merkmale aus dem Zeitbereich und daraus abgeleitete
    Zustandsindikatoren für die Restlebensdauerprognose von technischen Systemen vorgestellt.
    Dabei sind Zustandsindikatoren Kenngrößen zur Beobachtung des Zustands der kritischen
    Systemkomponenten. Anhand dreier Anwendungsbeispiele wird ihre Eignung evaluiert.
    Dabei werden Daten aus Lebensdauerversuchen unter instationären Betriebs- und
    Umgebungsbedingungen ausgewertet. Die auftretenden Unsicherheiten der Zukunft
    werden somit berücksichtigt. Die Beispielsysteme beruhen auf Gummi-Metall-Elementen
    und Wälzlagern. Aus den generierten Ergebnissen lässt sich schließen, dass die
    Zustandsindikatoren aus der betrachteten Zeitreihen-Toolbox auch unter unbekannten
    Betriebs- und Umgebungsbedingungen robust sind.\r\n"
- lang: eng
  text: "Due to the advances in digitalization, condition monitoring systems have
    found numerous applications in the industry due to benefits such as improved reliability
    and lowered costs through condition-based or predictive maintenance. Condition
    monitoring systems typically involve elements, such as data acquisition via suitable
    sensors, data preprocessing, feature extraction and selection, diagnostics, prognostics
    and (maintenance) decisions based on diagnosis or prognosis. For the application-specific
    development of a suitable condition monitoring system, each of these elements
    requires individual settings. Due to the uncertainty of the future, an open question
    arises in the condition monitoring field, which is reflected in unknown future
    operating and environmental conditions. This uncertainty needs consideration in
    all elements of a condition monitoring system.\r\nThis article focuses on feature
    extraction and selection, building on the hypothesis that the remaining useful
    life of a technical system can be predicted with high accuracy utilizing suitable
    features. In this article, health indicators derived from time-domain features
    that permit the monitoring of the health of critical system components are presented
    for predicting the remaining useful life of technical systems. Three distinct
    application examples based on rubber-metal elements and rolling-element bearings
    are evaluated to validate the suitability of the presented methods. Experimental
    data from accelerated lifetime tests conducted under non-stationary operating
    and environmental conditions are considered to take possible future uncertainties
    into account. It can be concluded from the acquired results that health indicators
    derived from the presented time series toolbox are robust to varying operating
    and environmental conditions.\r\n"
author:
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Amelie
  full_name: Bender, Amelie
  id: '54290'
  last_name: Bender
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Aimiyekagbon OK, Bender A, Sextro W. Extraktion und Selektion geeigneter Merkmale
    für die Restlebensdauerprognose von technischen Systemen trotz aleatorischen Unsicherheiten
    . In: <i>VDI-Berichte 2391</i>. VDI Verlag GmbH; 2021:197-210.'
  apa: Aimiyekagbon, O. K., Bender, A., &#38; Sextro, W. (2021). Extraktion und Selektion
    geeigneter Merkmale für die Restlebensdauerprognose von technischen Systemen trotz
    aleatorischen Unsicherheiten . <i>VDI-Berichte 2391</i>, 197–210.
  bibtex: '@inproceedings{Aimiyekagbon_Bender_Sextro_2021, place={Düsseldorf}, title={Extraktion
    und Selektion geeigneter Merkmale für die Restlebensdauerprognose von technischen
    Systemen trotz aleatorischen Unsicherheiten }, booktitle={VDI-Berichte 2391},
    publisher={VDI Verlag GmbH}, author={Aimiyekagbon, Osarenren Kennedy and Bender,
    Amelie and Sextro, Walter}, year={2021}, pages={197–210} }'
  chicago: 'Aimiyekagbon, Osarenren Kennedy, Amelie Bender, and Walter Sextro. “Extraktion
    und Selektion geeigneter Merkmale für die Restlebensdauerprognose von technischen
    Systemen trotz aleatorischen Unsicherheiten .” In <i>VDI-Berichte 2391</i>, 197–210.
    Düsseldorf: VDI Verlag GmbH, 2021.'
  ieee: O. K. Aimiyekagbon, A. Bender, and W. Sextro, “Extraktion und Selektion geeigneter
    Merkmale für die Restlebensdauerprognose von technischen Systemen trotz aleatorischen
    Unsicherheiten ,” in <i>VDI-Berichte 2391</i>, Würzburg, 2021, pp. 197–210.
  mla: Aimiyekagbon, Osarenren Kennedy, et al. “Extraktion und Selektion geeigneter
    Merkmale für die Restlebensdauerprognose von technischen Systemen trotz aleatorischen
    Unsicherheiten .” <i>VDI-Berichte 2391</i>, VDI Verlag GmbH, 2021, pp. 197–210.
  short: 'O.K. Aimiyekagbon, A. Bender, W. Sextro, in: VDI-Berichte 2391, VDI Verlag
    GmbH, Düsseldorf, 2021, pp. 197–210.'
conference:
  end_date: 2021-11-17
  location: Würzburg
  name: '3. VDI-Fachtagung  '
  start_date: 2021-11-16
date_created: 2021-11-22T07:42:44Z
date_updated: 2022-01-06T06:57:43Z
department:
- _id: '151'
keyword:
- run-to-failure
- rubber-metal element
- bearing prognostics
- non-stationary operating conditions
- varying operating conditions
- feature extraction
- feature selection
language:
- iso: ger
page: 197 - 210
place: Düsseldorf
publication: VDI-Berichte 2391
publication_identifier:
  isbn:
  - 978-3-18-092391-8
  issn:
  - '0083-5560 '
publication_status: published
publisher: VDI Verlag GmbH
status: public
title: 'Extraktion und Selektion geeigneter Merkmale für die Restlebensdauerprognose
  von technischen Systemen trotz aleatorischen Unsicherheiten '
type: conference
user_id: '9557'
year: '2021'
...
---
_id: '22507'
abstract:
- lang: eng
  text: Several methods, including order analysis, wavelet analysis and empirical
    mode decomposition have been proposed and successfully employed for the health
    state estimation of technical systems operating under varying conditions. However,
    where information such as the speed of rotating machinery, component specifications
    or other domain-specific information is unavailable, such methods are often infeasible.
    Thus, this paper investigates the application of classical time-domain features,
    features from the medical field and novel features from the highly comparative
    time-series analysis (HCTSA) package, for the health state estimation of rotating
    machinery operating under varying conditions. Furthermore, several feature selection
    methods are investigated to identify features as viable health indicators for
    the diagnostics and prognostics of technical systems. As a case study, the presented
    methods are evaluated on real-world and experimentally acquired vibration data
    of bearings operating under varying speed. The results show that the selected
    features can successfully be employed as health indicators for technical systems
    operating under varying conditions.
author:
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Amelie
  full_name: Bender, Amelie
  id: '54290'
  last_name: Bender
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Aimiyekagbon OK, Bender A, Sextro W. On the applicability of time series features
    as health indicators for technical systems operating under varying conditions.
    In: <i>Proceedings of the Seventeenth International Conference on Condition Monitoring
    and Asset Management (CM 2021)</i>.'
  apa: Aimiyekagbon, O. K., Bender, A., &#38; Sextro, W. (n.d.). On the applicability
    of time series features as health indicators for technical systems operating under
    varying conditions. <i>Proceedings of the Seventeenth International Conference
    on Condition Monitoring and Asset Management (CM 2021)</i>. Seventeenth International
    Conference on Condition Monitoring and Asset Management (CM 2021).
  bibtex: '@inproceedings{Aimiyekagbon_Bender_Sextro, title={On the applicability
    of time series features as health indicators for technical systems operating under
    varying conditions}, booktitle={Proceedings of the Seventeenth International Conference
    on Condition Monitoring and Asset Management (CM 2021)}, author={Aimiyekagbon,
    Osarenren Kennedy and Bender, Amelie and Sextro, Walter} }'
  chicago: Aimiyekagbon, Osarenren Kennedy, Amelie Bender, and Walter Sextro. “On
    the Applicability of Time Series Features as Health Indicators for Technical Systems
    Operating under Varying Conditions.” In <i>Proceedings of the Seventeenth International
    Conference on Condition Monitoring and Asset Management (CM 2021)</i>, n.d.
  ieee: O. K. Aimiyekagbon, A. Bender, and W. Sextro, “On the applicability of time
    series features as health indicators for technical systems operating under varying
    conditions,” presented at the Seventeenth International Conference on Condition
    Monitoring and Asset Management (CM 2021).
  mla: Aimiyekagbon, Osarenren Kennedy, et al. “On the Applicability of Time Series
    Features as Health Indicators for Technical Systems Operating under Varying Conditions.”
    <i>Proceedings of the Seventeenth International Conference on Condition Monitoring
    and Asset Management (CM 2021)</i>.
  short: 'O.K. Aimiyekagbon, A. Bender, W. Sextro, in: Proceedings of the Seventeenth
    International Conference on Condition Monitoring and Asset Management (CM 2021),
    n.d.'
conference:
  end_date: 2021-06-18
  name: Seventeenth International Conference on Condition Monitoring and Asset Management
    (CM 2021)
  start_date: 2021-06-14
date_created: 2021-06-23T05:24:39Z
date_updated: 2023-09-22T08:10:34Z
ddc:
- '620'
department:
- _id: '151'
file:
- access_level: open_access
  content_type: application/pdf
  creator: kennedy
  date_created: 2021-06-23T06:43:44Z
  date_updated: 2021-06-23T06:50:07Z
  description: 'This is a post-print version of the article presented at the Seventeenth
    International Con-ference on Condition Monitoring and Asset Management (CM 2021).
    The event websiteis available at:  https://www.bindt.org/events/CM-2021/ and the
    abstract is available at:https://www.bindt.org/events/CM-2021/abstract-9a7/.'
  file_id: '22508'
  file_name: Aimiyekagbon_et_al_2021_On_the_applicability_of_time_series_features_as_health_indicators_postPrint.pdf
  file_size: 1875572
  relation: main_file
  title: On the applicability of time series features as health indicators for technical
    systems operating under varying conditions
file_date_updated: 2021-06-23T06:50:07Z
has_accepted_license: '1'
keyword:
- Wind turbine diagnostics
- bearing diagnostics
- non-stationary operating conditions
- varying operating conditions
- feature extraction
- feature selection
- fault detection
- failure detection
language:
- iso: eng
oa: '1'
publication: Proceedings of the Seventeenth International Conference on Condition
  Monitoring and Asset Management (CM 2021)
publication_status: inpress
quality_controlled: '1'
status: public
title: On the applicability of time series features as health indicators for technical
  systems operating under varying conditions
type: conference
user_id: '9557'
year: '2021'
...
---
_id: '27111'
abstract:
- lang: eng
  text: In the industry 4.0 era, there is a growing need to transform unstructured
    data acquired by a multitude of sources into information and subsequently into
    knowledge to improve the quality of manufactured products, to boost production,
    for predictive maintenance, etc. Data-driven approaches, such as machine learning
    techniques, are typically employed to model the underlying relationship from data.
    However, an increase in model accuracy with state-of-the-art methods, such as
    deep convolutional neural networks, results in less interpretability and transparency.
    Due to the ease of implementation, interpretation and transparency to both domain
    experts and non-experts, a rule-based method is proposed in this paper, for prognostics
    and health management (PHM) and specifically for diagnostics. The proposed method
    utilizes the most relevant sensor signals acquired via feature extraction and
    selection techniques and expert knowledge. As a case study, the presented method
    is evaluated on data from a real-world quality control set-up provided by the
    European prognostics and health management society (PHME) at the conference’s
    2021 data challenge. With the proposed method, our team took the third place,
    capable of successfully diagnosing different fault modes, irrespective of varying
    conditions.
author:
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Lars
  full_name: Muth, Lars
  id: '77313'
  last_name: Muth
  orcid: 0000-0002-2938-5616
- first_name: Meike Claudia
  full_name: Wohlleben, Meike Claudia
  id: '43991'
  last_name: Wohlleben
  orcid: 0009-0009-9767-7168
- first_name: Amelie
  full_name: Bender, Amelie
  id: '54290'
  last_name: Bender
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Aimiyekagbon OK, Muth L, Wohlleben MC, Bender A, Sextro W. Rule-based Diagnostics
    of a Production Line. In: Do P, King S, Fink O, eds. <i>Proceedings of the European
    Conference of the PHM Society 2021</i>. Vol 6. ; 2021:527-536. doi:<a href="https://doi.org/10.36001/phme.2021.v6i1.3042">10.36001/phme.2021.v6i1.3042</a>'
  apa: Aimiyekagbon, O. K., Muth, L., Wohlleben, M. C., Bender, A., &#38; Sextro,
    W. (2021). Rule-based Diagnostics of a Production Line. In P. Do, S. King, &#38;
    O. Fink (Eds.), <i>Proceedings of the European Conference of the PHM Society 2021</i>
    (Vol. 6, Issue 1, pp. 527–536). <a href="https://doi.org/10.36001/phme.2021.v6i1.3042">https://doi.org/10.36001/phme.2021.v6i1.3042</a>
  bibtex: '@inproceedings{Aimiyekagbon_Muth_Wohlleben_Bender_Sextro_2021, title={Rule-based
    Diagnostics of a Production Line}, volume={6}, DOI={<a href="https://doi.org/10.36001/phme.2021.v6i1.3042">10.36001/phme.2021.v6i1.3042</a>},
    number={1}, booktitle={Proceedings of the European Conference of the PHM Society
    2021}, author={Aimiyekagbon, Osarenren Kennedy and Muth, Lars and Wohlleben, Meike
    Claudia and Bender, Amelie and Sextro, Walter}, editor={Do, Phuc and King, Steve
    and Fink, Olga}, year={2021}, pages={527–536} }'
  chicago: Aimiyekagbon, Osarenren Kennedy, Lars Muth, Meike Claudia Wohlleben, Amelie
    Bender, and Walter Sextro. “Rule-Based Diagnostics of a Production Line.” In <i>Proceedings
    of the European Conference of the PHM Society 2021</i>, edited by Phuc Do, Steve
    King, and Olga Fink, 6:527–36, 2021. <a href="https://doi.org/10.36001/phme.2021.v6i1.3042">https://doi.org/10.36001/phme.2021.v6i1.3042</a>.
  ieee: 'O. K. Aimiyekagbon, L. Muth, M. C. Wohlleben, A. Bender, and W. Sextro, “Rule-based
    Diagnostics of a Production Line,” in <i>Proceedings of the European Conference
    of the PHM Society 2021</i>, 2021, vol. 6, no. 1, pp. 527–536, doi: <a href="https://doi.org/10.36001/phme.2021.v6i1.3042">10.36001/phme.2021.v6i1.3042</a>.'
  mla: Aimiyekagbon, Osarenren Kennedy, et al. “Rule-Based Diagnostics of a Production
    Line.” <i>Proceedings of the European Conference of the PHM Society 2021</i>,
    edited by Phuc Do et al., vol. 6, no. 1, 2021, pp. 527–36, doi:<a href="https://doi.org/10.36001/phme.2021.v6i1.3042">10.36001/phme.2021.v6i1.3042</a>.
  short: 'O.K. Aimiyekagbon, L. Muth, M.C. Wohlleben, A. Bender, W. Sextro, in: P.
    Do, S. King, O. Fink (Eds.), Proceedings of the European Conference of the PHM
    Society 2021, 2021, pp. 527–536.'
conference:
  name: PHM Society European Conference
date_created: 2021-11-03T12:26:39Z
date_updated: 2023-09-22T09:13:01Z
department:
- _id: '151'
doi: 10.36001/phme.2021.v6i1.3042
editor:
- first_name: Phuc
  full_name: Do, Phuc
  last_name: Do
- first_name: Steve
  full_name: King, Steve
  last_name: King
- first_name: Olga
  full_name: Fink, Olga
  last_name: Fink
intvolume: '         6'
issue: '1'
keyword:
- PHME 2021
- Feature Selection Classification
- Feature Selection Clustering
- Interpretable Model
- Transparent Model
- Industry 4.0
- Real-World Diagnostics
- Quality Control
- Predictive Maintenance
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: http://papers.phmsociety.org/index.php/phme/article/download/3042/1812
oa: '1'
page: 527-536
publication: Proceedings of the European Conference of the PHM Society 2021
publication_status: published
quality_controlled: '1'
status: public
title: Rule-based Diagnostics of a Production Line
type: conference
user_id: '9557'
volume: 6
year: '2021'
...
---
_id: '17810'
abstract:
- lang: eng
  text: In all fields, the significance of a reliable and accurate predictive model
    is almost unquantifiable. With deep domain knowledge, models derived from first
    principles typically outperforms other models in terms of reliability and accuracy.
    When it may become a cumbersome or an unachievable task to build or validate such
    models of complex (non-linear) systems, machine learning techniques are employed
    to build predictive models. However, the accuracy of such techniques is not only
    dependent on the hyper-parameters of the chosen algorithm, but also on the amount
    and quality of data. This paper investigates the application of classical time
    series forecasting approaches for the reliable prognostics of technical systems,
    where black box machine learning techniques might not successfully be employed
    given insufficient amount of data and where first principles models are infeasible
    due to lack of domain specific data. Forecasting by analogy, forecasting by analytical
    function fitting, an exponential smoothing forecasting method and the long short-term
    memory (LSTM) are evaluated and compared against the ground truth data. As a case
    study, the methods are applied to predict future crack lengths of riveted aluminium
    plates under cyclic loading. The performance of the predictive models is evaluated
    based on error metrics leading to a proposal of when to apply which forecasting
    approach.
author:
- first_name: Osarenren Kennedy
  full_name: Aimiyekagbon, Osarenren Kennedy
  id: '9557'
  last_name: Aimiyekagbon
- first_name: Amelie
  full_name: Bender, Amelie
  id: '54290'
  last_name: Bender
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Aimiyekagbon OK, Bender A, Sextro W. Evaluation of time series forecasting
    approaches for the reliable crack length prediction of riveted aluminium plates
    given insufficient data. In: <i>PHM Society European Conference</i>. Vol 5. ;
    2020.'
  apa: Aimiyekagbon, O. K., Bender, A., &#38; Sextro, W. (2020). Evaluation of time
    series forecasting approaches for the reliable crack length prediction of riveted
    aluminium plates given insufficient data. <i>PHM Society European Conference</i>,
    <i>5</i>(1).
  bibtex: '@inproceedings{Aimiyekagbon_Bender_Sextro_2020, title={Evaluation of time
    series forecasting approaches for the reliable crack length prediction of riveted
    aluminium plates given insufficient data}, volume={5}, number={1}, booktitle={PHM
    Society European Conference}, author={Aimiyekagbon, Osarenren Kennedy and Bender,
    Amelie and Sextro, Walter}, year={2020} }'
  chicago: Aimiyekagbon, Osarenren Kennedy, Amelie Bender, and Walter Sextro. “Evaluation
    of Time Series Forecasting Approaches for the Reliable Crack Length Prediction
    of Riveted Aluminium Plates given Insufficient Data.” In <i>PHM Society European
    Conference</i>, Vol. 5, 2020.
  ieee: O. K. Aimiyekagbon, A. Bender, and W. Sextro, “Evaluation of time series forecasting
    approaches for the reliable crack length prediction of riveted aluminium plates
    given insufficient data,” in <i>PHM Society European Conference</i>, 2020, vol.
    5, no. 1.
  mla: Aimiyekagbon, Osarenren Kennedy, et al. “Evaluation of Time Series Forecasting
    Approaches for the Reliable Crack Length Prediction of Riveted Aluminium Plates
    given Insufficient Data.” <i>PHM Society European Conference</i>, vol. 5, no.
    1, 2020.
  short: 'O.K. Aimiyekagbon, A. Bender, W. Sextro, in: PHM Society European Conference,
    2020.'
date_created: 2020-08-11T13:32:40Z
date_updated: 2023-09-22T09:13:16Z
department:
- _id: '151'
intvolume: '         5'
issue: '1'
keyword:
- PHM 2019
- crack propagation
- forecasting
- unevenly spaced time series
- step ahead prediction
- short time series
language:
- iso: eng
publication: PHM Society European Conference
quality_controlled: '1'
status: public
title: Evaluation of time series forecasting approaches for the reliable crack length
  prediction of riveted aluminium plates given insufficient data
type: conference
user_id: '9557'
volume: 5
year: '2020'
...
