---
_id: '64798'
abstract:
- lang: eng
  text: "Lead-containing piezoelectric ceramics are still the base for today’s ultrasonic
    transducers used in broad applications. This is partly due to missing powerful
    lead-free piezoelectric ceramic parts in the commercial market. There has been
    much research on lead-free materials but developing them into marketable parts
    seems to be an ongoing process. The actual exemption of ROHS has expired, but
    as the new exemption has already been requested, ceramic suppliers keep on selling
    lead containing products. Nevertheless, these should be replaced by lead-free
    alternatives for environmental and health issues. \r\nThis contribution focuses
    on exploring the technological readiness level of lead-free hard piezoceramics
    for prestressed ultrasonic transducers. A small series of bolted Langevin transducers
    was set up with standard PZT material and three commercial lead-free variants.
    Results of the building process from individual ring ceramic characteristics to
    transducer load tests are presented. The main finding of this study is that the
    lead-free materials technically can compete with the standard PZT for medium-power
    applications. Some adaptations in the ultrasonic system must be done: the geometry
    must be altered to fit resonance frequency, and higher voltages or thinner ceramics
    are needed to achieve the same vibration level at low load. For reaching same
    power, the volume of lead-free ceramics must be 1.5 to 3 times larger. As already
    promoted in literature, mechanical losses at high vibration levels are smaller
    for the lead-free materials. This might help to argument lead-free piezoelectric
    materials in some applications.\r\n\r\nReferences\r\n1.\tDirective 2011/65/EU
    of the European Parliament and of the Council of 8 June 2011 on the Restriction
    of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment.
    EUR-Lex Document 02011L0065-20240801. Available online: http://data.europa.eu/eli/dir/2011/65/2024-08-01
    (accessed on 24 January 2025).\r\n2.\tLangevin, P. (1918) Method and Apparatus
    for Transmitting and Receiving Submarine Elastic Waves Using the Piezoelectric
    Properties of Quartz. French Patent Office; Patent No. FR505703.\r\n3.\tHemsel,
    T.; Twiefel, J. (2023) Piezoelectric Ultrasonic Power Transducers. In Encyclopedia
    of Materials: Electronics; Academic Press: Oxford, UK; pp. 276–285. https://doi.org/10.1016/b978-0-12-819728-8.00047-4.\r\n4.\tATHENA
    Technologie Beratung GmbH (2025) Description of Ultrasound Generator. Available
    online: http://shop.myathena.de/epages/12074748.sf/de_DE/?ObjectPath=/Shops/12074748/Products/AM200
    (accessed on 13 January 2025).\r\n5.\tLittmann, W.; Hemsel, T.; Kauczor, C.; Wallaschek,
    J.; Sinha, W. (2003) Load-adaptive phase-controller for resonant driven piezoelectric
    devices. Proc. World Congr. Ultrason. 2003, 48, 547–550.\r\n6.\tScheidemann, C.,
    Bornmann, P., Littmann, W., & Hemsel, T. (2025). Lead-Free Ceramics in Prestressed
    Ultrasonic Transducers. Actuators, 14(2), 55. https://doi.org/10.3390/act14020055\r\n"
author:
- first_name: Claus
  full_name: Scheidemann, Claus
  id: '38259'
  last_name: Scheidemann
- first_name: Peter
  full_name: Bornmann, Peter
  last_name: Bornmann
- first_name: Walter
  full_name: Littmann, Walter
  last_name: Littmann
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
citation:
  ama: 'Scheidemann C, Bornmann P, Littmann W, Hemsel T. Bolted Langevin transducers
    with leadfree piezoelectric ceramics. In: ; 2025.'
  apa: Scheidemann, C., Bornmann, P., Littmann, W., &#38; Hemsel, T. (2025). <i>Bolted
    Langevin transducers with leadfree piezoelectric ceramics</i>. International Workshop
    on Piezoelectric Materials and Applications in Actuators (IWPMA), Vilnius, Lithuania.
  bibtex: '@inproceedings{Scheidemann_Bornmann_Littmann_Hemsel_2025, title={Bolted
    Langevin transducers with leadfree piezoelectric ceramics}, author={Scheidemann,
    Claus and Bornmann, Peter and Littmann, Walter and Hemsel, Tobias}, year={2025}
    }'
  chicago: Scheidemann, Claus, Peter Bornmann, Walter Littmann, and Tobias Hemsel.
    “Bolted Langevin Transducers with Leadfree Piezoelectric Ceramics,” 2025.
  ieee: C. Scheidemann, P. Bornmann, W. Littmann, and T. Hemsel, “Bolted Langevin
    transducers with leadfree piezoelectric ceramics,” presented at the International
    Workshop on Piezoelectric Materials and Applications in Actuators (IWPMA), Vilnius,
    Lithuania, 2025.
  mla: Scheidemann, Claus, et al. <i>Bolted Langevin Transducers with Leadfree Piezoelectric
    Ceramics</i>. 2025.
  short: 'C. Scheidemann, P. Bornmann, W. Littmann, T. Hemsel, in: 2025.'
conference:
  end_date: 2025-07-03
  location: Vilnius, Lithuania
  name: International Workshop on Piezoelectric Materials and Applications in Actuators
    (IWPMA)
  start_date: 2025-07-01
date_created: 2026-03-02T10:39:40Z
date_updated: 2026-03-02T11:04:56Z
ddc:
- '620'
department:
- _id: '151'
file:
- access_level: open_access
  content_type: application/pdf
  creator: hemsel
  date_created: 2026-03-02T10:37:46Z
  date_updated: 2026-03-02T11:00:37Z
  file_id: '64799'
  file_name: IWPMA_2025_Hemsel.pdf
  file_size: 1812289
  relation: main_file
file_date_updated: 2026-03-02T11:00:37Z
has_accepted_license: '1'
keyword:
- lead free piezoelectric ceramics
- bolted Langevin transducer
- medium power ultrasound.
language:
- iso: eng
oa: '1'
status: public
title: Bolted Langevin transducers with leadfree piezoelectric ceramics
type: conference
user_id: '210'
year: '2025'
...
---
_id: '62302'
abstract:
- lang: eng
  text: The degree of crosslinking in unidirectional prepreg materials was investigated
    using differential scanning calorimetry to assess their curing behavior and thermal
    characteristics. To complement these measurements with a non-destructive, in-situ
    method, the propagation properties of guided acoustic waves in cured carbon fibre-reinforced
    epoxy plates were analysed. Correlations between the degree of crosslinking and
    acoustically determined mechanical properties were drawn to enable a future non-destructive
    evaluation approach.
author:
- first_name: Hayrettin
  full_name: Irmak, Hayrettin
  id: '75657'
  last_name: Irmak
  orcid: https://orcid.org/0009-0009-6267-2957
- first_name: Leander
  full_name: Claes, Leander
  id: '11829'
  last_name: Claes
  orcid: 0000-0002-4393-268X
- first_name: Shuang
  full_name: Wu, Shuang
  id: '48039'
  last_name: Wu
  orcid: 0000-0001-8645-9952
- first_name: Thorsten
  full_name: Marten, Thorsten
  id: '338'
  last_name: Marten
  orcid: 0009-0001-6433-7839
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
citation:
  ama: 'Irmak H, Claes L, Wu S, Marten T, Tröster T. Assessment of the influence of
    curing parameters on fibre reinforced epoxy composite properties using guided
    ultrasonic waves. In: <i>2025 International Congress on Ultrasonics</i>. AMA Service
    GmbH; 2025:235–238. doi:<a href="https://doi.org/10.5162/ultrasonic2025/c13-b3">10.5162/ultrasonic2025/c13-b3</a>'
  apa: Irmak, H., Claes, L., Wu, S., Marten, T., &#38; Tröster, T. (2025). Assessment
    of the influence of curing parameters on fibre reinforced epoxy composite properties
    using guided ultrasonic waves. <i>2025 International Congress on Ultrasonics</i>,
    235–238. <a href="https://doi.org/10.5162/ultrasonic2025/c13-b3">https://doi.org/10.5162/ultrasonic2025/c13-b3</a>
  bibtex: '@inproceedings{Irmak_Claes_Wu_Marten_Tröster_2025, place={Paderborn}, title={Assessment
    of the influence of curing parameters on fibre reinforced epoxy composite properties
    using guided ultrasonic waves}, DOI={<a href="https://doi.org/10.5162/ultrasonic2025/c13-b3">10.5162/ultrasonic2025/c13-b3</a>},
    booktitle={2025 International Congress on Ultrasonics}, publisher={AMA Service
    GmbH}, author={Irmak, Hayrettin and Claes, Leander and Wu, Shuang and Marten,
    Thorsten and Tröster, Thomas}, year={2025}, pages={235–238} }'
  chicago: 'Irmak, Hayrettin, Leander Claes, Shuang Wu, Thorsten Marten, and Thomas
    Tröster. “Assessment of the Influence of Curing Parameters on Fibre Reinforced
    Epoxy Composite Properties Using Guided Ultrasonic Waves.” In <i>2025 International
    Congress on Ultrasonics</i>, 235–238. Paderborn: AMA Service GmbH, 2025. <a href="https://doi.org/10.5162/ultrasonic2025/c13-b3">https://doi.org/10.5162/ultrasonic2025/c13-b3</a>.'
  ieee: 'H. Irmak, L. Claes, S. Wu, T. Marten, and T. Tröster, “Assessment of the
    influence of curing parameters on fibre reinforced epoxy composite properties
    using guided ultrasonic waves,” in <i>2025 International Congress on Ultrasonics</i>,
    Paderborn, Germany, 2025, pp. 235–238, doi: <a href="https://doi.org/10.5162/ultrasonic2025/c13-b3">10.5162/ultrasonic2025/c13-b3</a>.'
  mla: Irmak, Hayrettin, et al. “Assessment of the Influence of Curing Parameters
    on Fibre Reinforced Epoxy Composite Properties Using Guided Ultrasonic Waves.”
    <i>2025 International Congress on Ultrasonics</i>, AMA Service GmbH, 2025, pp.
    235–238, doi:<a href="https://doi.org/10.5162/ultrasonic2025/c13-b3">10.5162/ultrasonic2025/c13-b3</a>.
  short: 'H. Irmak, L. Claes, S. Wu, T. Marten, T. Tröster, in: 2025 International
    Congress on Ultrasonics, AMA Service GmbH, Paderborn, 2025, pp. 235–238.'
conference:
  end_date: 2025-09-25
  location: Paderborn, Germany
  name: 2025 ICU PADERBORN - 9th International Congress on Ultrasonics
  start_date: 2025-09-21
date_created: 2025-11-25T12:23:07Z
date_updated: 2026-03-23T10:31:53Z
department:
- _id: '49'
- _id: '149'
- _id: '321'
doi: 10.5162/ultrasonic2025/c13-b3
keyword:
- fibre-reinforced polymers
- differential scanning calorimetry
- degree of crosslinking
- guided waves
- ultrasound
language:
- iso: eng
page: 235–238
place: Paderborn
publication: 2025 International Congress on Ultrasonics
publication_identifier:
  isbn:
  - 978-3-910600-08-9
publication_status: published
publisher: AMA Service GmbH
quality_controlled: '1'
status: public
title: Assessment of the influence of curing parameters on fibre reinforced epoxy
  composite properties using guided ultrasonic waves
type: conference
user_id: '338'
year: '2025'
...
---
_id: '33500'
abstract:
- lang: eng
  text: 'This article is dedicated to piezoelectric ultrasonic power transducers that
    differ to well known medical ultrasonic diagnostic apparatus or non destructive
    testing devices by the level of power in use; typically several tens of up to
    more than thousand watts are used in a multitude of different applications. After
    a short introduction including historical development, the first focus is on theoretical
    background of the operating principle, design and mechanical modeling. As piezoelectric
    elements transform electrical to mechanical energy and vice versa, equivalent
    circuit modeling is also described. After that, sample applications are delineated
    by the matter wherein ultrasound generates unique effects: incredible high pressure
    level as well in air as in water, micro-bubbles generating temperature peaks for
    very short time instances in fluids, acoustoplastic effect, enhancement of diffusion
    and recrystallization in solids, friction manipulation, incremental deformation
    and micro-cracking of surfaces, or even generation of macroscopic movements in
    motors. At the end, some future directions ranging from novel modeling approaches
    to advanced control and new materials are addressed.'
author:
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Jens
  full_name: Twiefel, Jens
  last_name: Twiefel
citation:
  ama: 'Hemsel T, Twiefel J. Piezoelectric Ultrasonic Power Transducers. In: <i>Reference
    Module in Materials Science and Materials Engineering</i>. Elsevier; 2022. doi:<a
    href="https://doi.org/10.1016/b978-0-12-819728-8.00047-4">10.1016/b978-0-12-819728-8.00047-4</a>'
  apa: Hemsel, T., &#38; Twiefel, J. (2022). Piezoelectric Ultrasonic Power Transducers.
    In <i>Reference Module in Materials Science and Materials Engineering</i>. Elsevier.
    <a href="https://doi.org/10.1016/b978-0-12-819728-8.00047-4">https://doi.org/10.1016/b978-0-12-819728-8.00047-4</a>
  bibtex: '@inbook{Hemsel_Twiefel_2022, title={Piezoelectric Ultrasonic Power Transducers},
    DOI={<a href="https://doi.org/10.1016/b978-0-12-819728-8.00047-4">10.1016/b978-0-12-819728-8.00047-4</a>},
    booktitle={Reference Module in Materials Science and Materials Engineering}, publisher={Elsevier},
    author={Hemsel, Tobias and Twiefel, Jens}, year={2022} }'
  chicago: Hemsel, Tobias, and Jens Twiefel. “Piezoelectric Ultrasonic Power Transducers.”
    In <i>Reference Module in Materials Science and Materials Engineering</i>. Elsevier,
    2022. <a href="https://doi.org/10.1016/b978-0-12-819728-8.00047-4">https://doi.org/10.1016/b978-0-12-819728-8.00047-4</a>.
  ieee: T. Hemsel and J. Twiefel, “Piezoelectric Ultrasonic Power Transducers,” in
    <i>Reference Module in Materials Science and Materials Engineering</i>, Elsevier,
    2022.
  mla: Hemsel, Tobias, and Jens Twiefel. “Piezoelectric Ultrasonic Power Transducers.”
    <i>Reference Module in Materials Science and Materials Engineering</i>, Elsevier,
    2022, doi:<a href="https://doi.org/10.1016/b978-0-12-819728-8.00047-4">10.1016/b978-0-12-819728-8.00047-4</a>.
  short: 'T. Hemsel, J. Twiefel, in: Reference Module in Materials Science and Materials
    Engineering, Elsevier, 2022.'
date_created: 2022-09-30T09:35:16Z
date_updated: 2022-09-30T09:41:47Z
department:
- _id: '151'
doi: 10.1016/b978-0-12-819728-8.00047-4
keyword:
- Equivalent circuit model
- Langevin transducer
- Lumped parameter model
- Piezoelectric transducer
- Ultrasonic processes
- Ultrasound
language:
- iso: eng
main_file_link:
- url: https://www.sciencedirect.com/science/article/pii/B9780128197288000474
publication: Reference Module in Materials Science and Materials Engineering
publication_identifier:
  isbn:
  - 978-0-12-803581-8
publication_status: published
publisher: Elsevier
quality_controlled: '1'
status: public
title: Piezoelectric Ultrasonic Power Transducers
type: book_chapter
user_id: '210'
year: '2022'
...
---
_id: '41906'
abstract:
- lang: eng
  text: "<jats:title>Abstract</jats:title><jats:sec>\r\n                <jats:title>Background</jats:title>\r\n
    \               <jats:p>Due to the steadily increasing life expectancy of the
    population, the need for medical aids to maintain the previous quality of life
    is growing. The basis for independent mobility is a functional locomotor system.
    The hip joint can be so badly damaged by everyday wear or accelerated by illness
    that reconstruction by means of endoprostheses is necessary.</jats:p>\r\n              </jats:sec><jats:sec>\r\n
    \               <jats:title>Results</jats:title>\r\n                <jats:p>In
    order to ensure a high quality of life for the patient after this procedure as
    well as a long service life of the prosthesis, a high-quality design is required,
    so that many different aspects have to be taken into account when developing prostheses.
    Long-term medical studies show that the service life and operational safety of
    a hip prosthesis by best possible adaptation of the stiffness to that of the bone
    can be increased. The use of additive manufacturing processes enables to specifically
    change the stiffness of implant structures.</jats:p>\r\n              </jats:sec><jats:sec>\r\n
    \               <jats:title>Conclusions</jats:title>\r\n                <jats:p>Reduced
    implant stiffness leads to an increase in stress in the surrounding bone and thus
    to a reduction in bone resorption. Numerical methods are used to demonstrate this
    fact in the hip implant developed. The safety of use is nevertheless ensured by
    evaluating and taking into account the stresses that occur for critical load cases.
    These results are a promising basis to enable longer service life of prostheses
    in the future.</jats:p>\r\n              </jats:sec>"
article_number: '23'
author:
- first_name: Lena
  full_name: Risse, Lena
  id: '27356'
  last_name: Risse
- first_name: Steven Clifford
  full_name: Woodcock, Steven Clifford
  id: '60486'
  last_name: Woodcock
- first_name: Jan-Peter
  full_name: Brüggemann, Jan-Peter
  last_name: Brüggemann
- first_name: Gunter
  full_name: Kullmer, Gunter
  id: '291'
  last_name: Kullmer
- first_name: Hans Albert
  full_name: Richard, Hans Albert
  last_name: Richard
citation:
  ama: Risse L, Woodcock SC, Brüggemann J-P, Kullmer G, Richard HA. Stiffness optimization
    and reliable design of a hip implant by using the potential of additive manufacturing
    processes. <i>BioMedical Engineering OnLine</i>. 2022;21(1). doi:<a href="https://doi.org/10.1186/s12938-022-00990-z">10.1186/s12938-022-00990-z</a>
  apa: Risse, L., Woodcock, S. C., Brüggemann, J.-P., Kullmer, G., &#38; Richard,
    H. A. (2022). Stiffness optimization and reliable design of a hip implant by using
    the potential of additive manufacturing processes. <i>BioMedical Engineering OnLine</i>,
    <i>21</i>(1), Article 23. <a href="https://doi.org/10.1186/s12938-022-00990-z">https://doi.org/10.1186/s12938-022-00990-z</a>
  bibtex: '@article{Risse_Woodcock_Brüggemann_Kullmer_Richard_2022, title={Stiffness
    optimization and reliable design of a hip implant by using the potential of additive
    manufacturing processes}, volume={21}, DOI={<a href="https://doi.org/10.1186/s12938-022-00990-z">10.1186/s12938-022-00990-z</a>},
    number={123}, journal={BioMedical Engineering OnLine}, publisher={Springer Science
    and Business Media LLC}, author={Risse, Lena and Woodcock, Steven Clifford and
    Brüggemann, Jan-Peter and Kullmer, Gunter and Richard, Hans Albert}, year={2022}
    }'
  chicago: Risse, Lena, Steven Clifford Woodcock, Jan-Peter Brüggemann, Gunter Kullmer,
    and Hans Albert Richard. “Stiffness Optimization and Reliable Design of a Hip
    Implant by Using the Potential of Additive Manufacturing Processes.” <i>BioMedical
    Engineering OnLine</i> 21, no. 1 (2022). <a href="https://doi.org/10.1186/s12938-022-00990-z">https://doi.org/10.1186/s12938-022-00990-z</a>.
  ieee: 'L. Risse, S. C. Woodcock, J.-P. Brüggemann, G. Kullmer, and H. A. Richard,
    “Stiffness optimization and reliable design of a hip implant by using the potential
    of additive manufacturing processes,” <i>BioMedical Engineering OnLine</i>, vol.
    21, no. 1, Art. no. 23, 2022, doi: <a href="https://doi.org/10.1186/s12938-022-00990-z">10.1186/s12938-022-00990-z</a>.'
  mla: Risse, Lena, et al. “Stiffness Optimization and Reliable Design of a Hip Implant
    by Using the Potential of Additive Manufacturing Processes.” <i>BioMedical Engineering
    OnLine</i>, vol. 21, no. 1, 23, Springer Science and Business Media LLC, 2022,
    doi:<a href="https://doi.org/10.1186/s12938-022-00990-z">10.1186/s12938-022-00990-z</a>.
  short: L. Risse, S.C. Woodcock, J.-P. Brüggemann, G. Kullmer, H.A. Richard, BioMedical
    Engineering OnLine 21 (2022).
date_created: 2023-02-08T07:33:04Z
date_updated: 2023-02-08T07:42:36Z
department:
- _id: '143'
doi: 10.1186/s12938-022-00990-z
intvolume: '        21'
issue: '1'
keyword:
- Radiology
- Nuclear Medicine and imaging
- Biomedical Engineering
- General Medicine
- Biomaterials
- Radiological and Ultrasound Technology
language:
- iso: eng
publication: BioMedical Engineering OnLine
publication_identifier:
  issn:
  - 1475-925X
publication_status: published
publisher: Springer Science and Business Media LLC
status: public
title: Stiffness optimization and reliable design of a hip implant by using the potential
  of additive manufacturing processes
type: journal_article
user_id: '45673'
volume: 21
year: '2022'
...
---
_id: '14852'
abstract:
- lang: eng
  text: In a variety of industrial applications, liquids are atomized to produce aerosols
    for further processing. Example applications are the coating of surfaces with
    paints, the application of ultra-thin adhesive layers and the atomization of fuels
    for the production of combustible dispersions. In this publication different atomizing
    principles (standing-wave, capillary-wave, vibrating-mesh) are examined and discussed.
    Using an optimized standing-wave system, tough liquids with viscosities of up
    to about 100 Pas could be successfully atomized.
author:
- first_name: Paul
  full_name: Dunst, Paul
  id: '22130'
  last_name: Dunst
- first_name: Peter
  full_name: Bornmann, Peter
  last_name: Bornmann
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: 'Walter '
  full_name: 'Littmann, Walter '
  last_name: Littmann
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
citation:
  ama: 'Dunst P, Bornmann P, Hemsel T, Littmann W, Sextro W. Atomization of Fluids
    with Ultrasound. In: Lötters J, Urban G, eds. <i>Conference Proceedings - The
    4th Conference on MicroFluidic Handling Systems (MFHS2019)</i>. Enschede, The
    Netherlands; 2019:140-143.'
  apa: Dunst, P., Bornmann, P., Hemsel, T., Littmann, W., &#38; Sextro, W. (2019).
    Atomization of Fluids with Ultrasound. In J. Lötters &#38; G. Urban (Eds.), <i>Conference
    Proceedings - The 4th Conference on MicroFluidic Handling Systems (MFHS2019)</i>
    (pp. 140–143). Enschede, The Netherlands.
  bibtex: '@inproceedings{Dunst_Bornmann_Hemsel_Littmann_Sextro_2019, place={Enschede,
    The Netherlands}, title={Atomization of Fluids with Ultrasound}, booktitle={Conference
    Proceedings - The 4th Conference on MicroFluidic Handling Systems (MFHS2019)},
    author={Dunst, Paul and Bornmann, Peter and Hemsel, Tobias and Littmann, Walter  and
    Sextro, Walter}, editor={Lötters, Joost and Urban, GeraldEditors}, year={2019},
    pages={140–143} }'
  chicago: Dunst, Paul, Peter Bornmann, Tobias Hemsel, Walter  Littmann, and Walter
    Sextro. “Atomization of Fluids with Ultrasound.” In <i>Conference Proceedings
    - The 4th Conference on MicroFluidic Handling Systems (MFHS2019)</i>, edited by
    Joost Lötters and Gerald Urban, 140–43. Enschede, The Netherlands, 2019.
  ieee: P. Dunst, P. Bornmann, T. Hemsel, W. Littmann, and W. Sextro, “Atomization
    of Fluids with Ultrasound,” in <i>Conference Proceedings - The 4th Conference
    on MicroFluidic Handling Systems (MFHS2019)</i>, Enschede, The Netherlands, 2019,
    pp. 140–143.
  mla: Dunst, Paul, et al. “Atomization of Fluids with Ultrasound.” <i>Conference
    Proceedings - The 4th Conference on MicroFluidic Handling Systems (MFHS2019)</i>,
    edited by Joost Lötters and Gerald Urban, 2019, pp. 140–43.
  short: 'P. Dunst, P. Bornmann, T. Hemsel, W. Littmann, W. Sextro, in: J. Lötters,
    G. Urban (Eds.), Conference Proceedings - The 4th Conference on MicroFluidic Handling
    Systems (MFHS2019), Enschede, The Netherlands, 2019, pp. 140–143.'
conference:
  end_date: 2019-10-04
  location: Enschede, The Netherlands
  name: 4th Conference on MicroFluidic Handling Systems
  start_date: 2019-10-02
date_created: 2019-11-07T15:25:30Z
date_updated: 2022-01-06T06:52:08Z
ddc:
- '620'
department:
- _id: '151'
editor:
- first_name: Joost
  full_name: Lötters, Joost
  last_name: Lötters
- first_name: Gerald
  full_name: Urban, Gerald
  last_name: Urban
file:
- access_level: closed
  content_type: application/pdf
  creator: pdunst
  date_created: 2019-11-07T15:22:56Z
  date_updated: 2019-11-07T15:22:56Z
  file_id: '14853'
  file_name: Dunst_MFHS_2019.pdf
  file_size: 3850591
  relation: main_file
  success: 1
file_date_updated: 2019-11-07T15:22:56Z
has_accepted_license: '1'
keyword:
- atomization
- ultrasound
- standing-wave
- capillarywave
- vibrating-mesh
language:
- iso: eng
page: 140-143
place: Enschede, The Netherlands
publication: Conference Proceedings - The 4th Conference on MicroFluidic Handling
  Systems (MFHS2019)
publication_status: published
quality_controlled: '1'
status: public
title: Atomization of Fluids with Ultrasound
type: conference
user_id: '22130'
year: '2019'
...
---
_id: '9783'
abstract:
- lang: eng
  text: To optimize the ultrasound irradiation for cavitation based ultrasound applications
    like sonochemistry or ultrasound cleaning, the correlation between cavitation
    intensity and the resulting effect on the process is of interest. Furthermore,
    changing conditions like temperature and pressure result in varying acoustic properties
    of the liquid. That might necessitate an adaption of the ultrasound irradiation.
    To detect such changes during operation, process monitoring is desired. Labor
    intensive processes, that might be carried out for several hours, also require
    process monitoring to increase their reliability by detection of changes or malfunctions
    during operation. In some applications cavitation detection and monitoring can
    be achieved by the application of sensors in the sound field. Though the application
    of sensors is possible, this necessitates modifications on the system and the
    sensor might disturb the sound field. In other applications harsh, process conditions
    prohibit the application of sensors in the sound field. Therefore alternative
    techniques for cavitation detection and monitoring are desired. The applicability
    of an external microphone and a self-sensing ultrasound transducer for cavitation
    detection were experimentally investigated. Both methods were found to be suitable
    and easily applicable.
author:
- first_name: Peter
  full_name: Bornmann, Peter
  last_name: Bornmann
- first_name: Tobias
  full_name: Hemsel, Tobias
  id: '210'
  last_name: Hemsel
- first_name: Walter
  full_name: Sextro, Walter
  id: '21220'
  last_name: Sextro
- first_name: Takafumi
  full_name: Maeda, Takafumi
  last_name: Maeda
- first_name: Takeshi
  full_name: Morita, Takeshi
  last_name: Morita
citation:
  ama: 'Bornmann P, Hemsel T, Sextro W, Maeda T, Morita T. Non-perturbing cavitation
    detection / monitoring in sonochemical reactors. In: <i>Ultrasonics Symposium
    (IUS), 2012 IEEE International</i>. ; 2012:1141-1144. doi:<a href="https://doi.org/10.1109/ULTSYM.2012.0284">10.1109/ULTSYM.2012.0284</a>'
  apa: Bornmann, P., Hemsel, T., Sextro, W., Maeda, T., &#38; Morita, T. (2012). Non-perturbing
    cavitation detection / monitoring in sonochemical reactors. In <i>Ultrasonics
    Symposium (IUS), 2012 IEEE International</i> (pp. 1141–1144). <a href="https://doi.org/10.1109/ULTSYM.2012.0284">https://doi.org/10.1109/ULTSYM.2012.0284</a>
  bibtex: '@inproceedings{Bornmann_Hemsel_Sextro_Maeda_Morita_2012, title={Non-perturbing
    cavitation detection / monitoring in sonochemical reactors}, DOI={<a href="https://doi.org/10.1109/ULTSYM.2012.0284">10.1109/ULTSYM.2012.0284</a>},
    booktitle={Ultrasonics Symposium (IUS), 2012 IEEE International}, author={Bornmann,
    Peter and Hemsel, Tobias and Sextro, Walter and Maeda, Takafumi and Morita, Takeshi},
    year={2012}, pages={1141–1144} }'
  chicago: Bornmann, Peter, Tobias Hemsel, Walter Sextro, Takafumi Maeda, and Takeshi
    Morita. “Non-Perturbing Cavitation Detection / Monitoring in Sonochemical Reactors.”
    In <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>, 1141–44, 2012.
    <a href="https://doi.org/10.1109/ULTSYM.2012.0284">https://doi.org/10.1109/ULTSYM.2012.0284</a>.
  ieee: P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, and T. Morita, “Non-perturbing
    cavitation detection / monitoring in sonochemical reactors,” in <i>Ultrasonics
    Symposium (IUS), 2012 IEEE International</i>, 2012, pp. 1141–1144.
  mla: Bornmann, Peter, et al. “Non-Perturbing Cavitation Detection / Monitoring in
    Sonochemical Reactors.” <i>Ultrasonics Symposium (IUS), 2012 IEEE International</i>,
    2012, pp. 1141–44, doi:<a href="https://doi.org/10.1109/ULTSYM.2012.0284">10.1109/ULTSYM.2012.0284</a>.
  short: 'P. Bornmann, T. Hemsel, W. Sextro, T. Maeda, T. Morita, in: Ultrasonics
    Symposium (IUS), 2012 IEEE International, 2012, pp. 1141–1144.'
date_created: 2019-05-13T13:18:49Z
date_updated: 2022-01-06T07:04:20Z
department:
- _id: '151'
doi: 10.1109/ULTSYM.2012.0284
keyword:
- cavitation
- chemical reactors
- microphones
- process monitoring
- reliability
- ultrasonic applications
- ultrasonic waves
- acoustic properties
- cavitation based ultrasound applications
- cavitation intensity
- change detection reliability
- external microphone
- malfunction detection reliability
- nonperturbing cavitation detection
- nonperturbing cavitation monitoring
- process monitoring
- self-sensing ultrasound transducer
- sonochemical reactors
- sonochemistry
- ultrasound cleaning
- ultrasound irradiation
- Acoustics
- Liquids
- Monitoring
- Sensors
- Sonar equipment
- Transducers
- Ultrasonic imaging
language:
- iso: eng
page: 1141-1144
publication: Ultrasonics Symposium (IUS), 2012 IEEE International
publication_identifier:
  issn:
  - 1948-5719
quality_controlled: '1'
status: public
title: Non-perturbing cavitation detection / monitoring in sonochemical reactors
type: conference
user_id: '55222'
year: '2012'
...
