---
_id: '24131'
abstract:
- lang: eng
  text: <jats:p>Glass/carbon fiber reinforced plastic (GFRP/CFRP) and hybrid components
    have attracted increasing attention in lightweight applications. However, residual
    stresses induced in the manufacturing process of these components can result in
    warpage and, eventually, negatively affect the mechanical performance of the composite
    structures. In the present work, GFRP, CFRP, GFRP/steel and CFRP/steel hybrid
    components were manufactured through the prepreg-press-technology always employing
    the same process parameters. The residual stresses of these components were measured
    through the hole drilling method (HDM), based on an adequate formalism to evaluate
    the residual stresses for orthotropic materials including the calculation of the
    calibration coefficients via finite element analysis (FEA). In FEA, the real material
    lay-up and mechanical properties of the samples were considered. The warpage induced
    by residual stresses was measured after the samples were removed from the tool.
    The measured residual stresses and warpage of four different types of samples
    were compared and results were analyzed in depth. The results obtained can be
    extended to other hybrid materials and even could be used for designing multi-stable
    laminates for application in adaptive structures. Moreover, the effects of the
    drilling process parameters of HDM, e.g., the drilling speed, the drilling increment
    and the zero-depth setting, on the resulting residual stresses of GFRP were investigated.
    The reliability of residual stress measurements in GFRP using HDM was validated
    through mechanical bending tests. The conclusions concerning the choice of optimal
    drilling parameters for GFRP could be directly applied for other types of samples
    considered in the present work.</jats:p>
article_number: '335'
author:
- first_name: Tao
  full_name: Wu, Tao
  last_name: Wu
- first_name: Steffen Rainer
  full_name: Tinkloh, Steffen Rainer
  id: '72722'
  last_name: Tinkloh
- first_name: Thomas
  full_name: Tröster, Thomas
  id: '553'
  last_name: Tröster
- first_name: Wolfgang
  full_name: Zinn, Wolfgang
  last_name: Zinn
- first_name: Thomas
  full_name: Niendorf, Thomas
  last_name: Niendorf
citation:
  ama: Wu T, Tinkloh SR, Tröster T, Zinn W, Niendorf T. Measurement and Analysis of
    Residual Stresses and Warpage in Fiber Reinforced Plastic and Hybrid Components.
    <i>Metals</i>. Published online 2021. doi:<a href="https://doi.org/10.3390/met11020335">10.3390/met11020335</a>
  apa: Wu, T., Tinkloh, S. R., Tröster, T., Zinn, W., &#38; Niendorf, T. (2021). Measurement
    and Analysis of Residual Stresses and Warpage in Fiber Reinforced Plastic and
    Hybrid Components. <i>Metals</i>, Article 335. <a href="https://doi.org/10.3390/met11020335">https://doi.org/10.3390/met11020335</a>
  bibtex: '@article{Wu_Tinkloh_Tröster_Zinn_Niendorf_2021, title={Measurement and
    Analysis of Residual Stresses and Warpage in Fiber Reinforced Plastic and Hybrid
    Components}, DOI={<a href="https://doi.org/10.3390/met11020335">10.3390/met11020335</a>},
    number={335}, journal={Metals}, author={Wu, Tao and Tinkloh, Steffen Rainer and
    Tröster, Thomas and Zinn, Wolfgang and Niendorf, Thomas}, year={2021} }'
  chicago: Wu, Tao, Steffen Rainer Tinkloh, Thomas Tröster, Wolfgang Zinn, and Thomas
    Niendorf. “Measurement and Analysis of Residual Stresses and Warpage in Fiber
    Reinforced Plastic and Hybrid Components.” <i>Metals</i>, 2021. <a href="https://doi.org/10.3390/met11020335">https://doi.org/10.3390/met11020335</a>.
  ieee: 'T. Wu, S. R. Tinkloh, T. Tröster, W. Zinn, and T. Niendorf, “Measurement
    and Analysis of Residual Stresses and Warpage in Fiber Reinforced Plastic and
    Hybrid Components,” <i>Metals</i>, Art. no. 335, 2021, doi: <a href="https://doi.org/10.3390/met11020335">10.3390/met11020335</a>.'
  mla: Wu, Tao, et al. “Measurement and Analysis of Residual Stresses and Warpage
    in Fiber Reinforced Plastic and Hybrid Components.” <i>Metals</i>, 335, 2021,
    doi:<a href="https://doi.org/10.3390/met11020335">10.3390/met11020335</a>.
  short: T. Wu, S.R. Tinkloh, T. Tröster, W. Zinn, T. Niendorf, Metals (2021).
date_created: 2021-09-10T08:25:01Z
date_updated: 2022-04-26T06:34:21Z
department:
- _id: '9'
- _id: '321'
- _id: '149'
doi: 10.3390/met11020335
language:
- iso: eng
publication: Metals
publication_identifier:
  issn:
  - 2075-4701
publication_status: published
quality_controlled: '1'
status: public
title: Measurement and Analysis of Residual Stresses and Warpage in Fiber Reinforced
  Plastic and Hybrid Components
type: journal_article
user_id: '72722'
year: '2021'
...