The Effect of Out-of-Plane Waviness Asymmetry on Laminate Strength

Vincent Karel Maes; Bassam S F Elsaied; Stephen R Hallett; James Kratz

doi:10.12783/asc36/35793

The Effect of Out-of-Plane Waviness Asymmetry on Laminate Strength

Vincent Karel Maes^*, Bassam S F Elsaied, Stephen R Hallett, James Kratz

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

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Abstract

The study of defects and their influence on the performance of composite structures is well documented. However, simplifications are often made regarding the morphology of these defects. As part of the CerTest project, a database of composite features and defects is being built, for which an assessment must be made of what information is relevant. This study looks specifically at out-of-plane waviness and seeks to investigate whether the commonly used severity metrics (e.g. maximum angle) are sufficient to characterize such defects when considering more complex morphologies. To assess this, previously developed numerical methods are used to investigate the tensile and compressive strength of cross-ply and quasi-isotropic laminates. These laminates are seeded with asymmetrical out-of-plane waviness. The numerical results demonstrate that for reliable prediction of the strength reduction caused by out-of-plane waviness, the asymmetry is an important consideration with relative reductions from symmetric to asymmetric wrinkle of up to 50% found within the wrinkles evaluated in this study.

Original language	English
Title of host publication	Proceedings of the American Society for Composites—Thirty-Sixth Technical Conference on Composite Materials
Publisher	DEStech Publications, Inc.
Pages	670-683
ISBN (Print)	9781605956862
DOIs	https://doi.org/10.12783/asc36/35793
Publication status	Published - 20 Sept 2021
Event	36th Technical Conference of the American Society for Composites 2021: Composites Ingenuity Taking on Challenges in Environment-Energy-Economy, ASC 2021 - College Station, Virtual, United States Duration: 20 Sept 2021 → 22 Sept 2021

Publication series

Name	Proceedings of the American Society for Composites Technical Conference
ISSN (Print)	1084-7243

Conference

Conference	36th Technical Conference of the American Society for Composites 2021: Composites Ingenuity Taking on Challenges in Environment-Energy-Economy, ASC 2021
Country/Territory	United States
City	College Station, Virtual
Period	20/09/21 → 22/09/21

Access to Document

10.12783/asc36/35793

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This is the accepted author manuscript (AAM). The final published version (version of record) is available online via DEStech Publications Inc at 10.12783/asc36/35793. Please refer to any applicable terms of use of the publisher.
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CerTest: 8034 - EPSRC EP/S017038/1 - Prof Ole Thomsen CerTest
Thomsen, O. (Principal Investigator)
1/08/19 → 31/07/24
Project: Research

HPC (High Performance Computing) and HTC (High Throughput Computing) Facilities
Alam, S. R. (Manager), Williams, D. A. G. (Manager), Eccleston, P. E. (Manager) & Greene, D. (Manager)
Facility/equipment: Facility

Cite this

Maes, V. K., Elsaied, B. S. F., Hallett, S. R., & Kratz, J. (2021). The Effect of Out-of-Plane Waviness Asymmetry on Laminate Strength. In Proceedings of the American Society for Composites—Thirty-Sixth Technical Conference on Composite Materials (pp. 670-683). (Proceedings of the American Society for Composites Technical Conference). DEStech Publications, Inc.. https://doi.org/10.12783/asc36/35793

Maes, Vincent Karel ; Elsaied, Bassam S F ; Hallett, Stephen R et al. / The Effect of Out-of-Plane Waviness Asymmetry on Laminate Strength. Proceedings of the American Society for Composites—Thirty-Sixth Technical Conference on Composite Materials. DEStech Publications, Inc., 2021. pp. 670-683 (Proceedings of the American Society for Composites Technical Conference).

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title = "The Effect of Out-of-Plane Waviness Asymmetry on Laminate Strength",

abstract = "The study of defects and their influence on the performance of composite structures is well documented. However, simplifications are often made regarding the morphology of these defects. As part of the CerTest project, a database of composite features and defects is being built, for which an assessment must be made of what information is relevant. This study looks specifically at out-of-plane waviness and seeks to investigate whether the commonly used severity metrics (e.g. maximum angle) are sufficient to characterize such defects when considering more complex morphologies. To assess this, previously developed numerical methods are used to investigate the tensile and compressive strength of cross-ply and quasi-isotropic laminates. These laminates are seeded with asymmetrical out-of-plane waviness. The numerical results demonstrate that for reliable prediction of the strength reduction caused by out-of-plane waviness, the asymmetry is an important consideration with relative reductions from symmetric to asymmetric wrinkle of up to 50% found within the wrinkles evaluated in this study.",

author = "Maes, {Vincent Karel} and Elsaied, {Bassam S F} and Hallett, {Stephen R} and James Kratz",

year = "2021",

month = sep,

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Maes, VK , Elsaied, BSF , Hallett, SR & Kratz, J 2021, The Effect of Out-of-Plane Waviness Asymmetry on Laminate Strength. in Proceedings of the American Society for Composites—Thirty-Sixth Technical Conference on Composite Materials. Proceedings of the American Society for Composites Technical Conference, DEStech Publications, Inc., pp. 670-683, 36th Technical Conference of the American Society for Composites 2021: Composites Ingenuity Taking on Challenges in Environment-Energy-Economy, ASC 2021, College Station, Virtual, United States, 20/09/21. https://doi.org/10.12783/asc36/35793

The Effect of Out-of-Plane Waviness Asymmetry on Laminate Strength. / Maes, Vincent Karel ; Elsaied, Bassam S F ; Hallett, Stephen R et al.
Proceedings of the American Society for Composites—Thirty-Sixth Technical Conference on Composite Materials. DEStech Publications, Inc., 2021. p. 670-683 (Proceedings of the American Society for Composites Technical Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

TY - GEN

T1 - The Effect of Out-of-Plane Waviness Asymmetry on Laminate Strength

AU - Maes, Vincent Karel

AU - Elsaied, Bassam S F

AU - Hallett, Stephen R

AU - Kratz, James

PY - 2021/9/20

Y1 - 2021/9/20

N2 - The study of defects and their influence on the performance of composite structures is well documented. However, simplifications are often made regarding the morphology of these defects. As part of the CerTest project, a database of composite features and defects is being built, for which an assessment must be made of what information is relevant. This study looks specifically at out-of-plane waviness and seeks to investigate whether the commonly used severity metrics (e.g. maximum angle) are sufficient to characterize such defects when considering more complex morphologies. To assess this, previously developed numerical methods are used to investigate the tensile and compressive strength of cross-ply and quasi-isotropic laminates. These laminates are seeded with asymmetrical out-of-plane waviness. The numerical results demonstrate that for reliable prediction of the strength reduction caused by out-of-plane waviness, the asymmetry is an important consideration with relative reductions from symmetric to asymmetric wrinkle of up to 50% found within the wrinkles evaluated in this study.

AB - The study of defects and their influence on the performance of composite structures is well documented. However, simplifications are often made regarding the morphology of these defects. As part of the CerTest project, a database of composite features and defects is being built, for which an assessment must be made of what information is relevant. This study looks specifically at out-of-plane waviness and seeks to investigate whether the commonly used severity metrics (e.g. maximum angle) are sufficient to characterize such defects when considering more complex morphologies. To assess this, previously developed numerical methods are used to investigate the tensile and compressive strength of cross-ply and quasi-isotropic laminates. These laminates are seeded with asymmetrical out-of-plane waviness. The numerical results demonstrate that for reliable prediction of the strength reduction caused by out-of-plane waviness, the asymmetry is an important consideration with relative reductions from symmetric to asymmetric wrinkle of up to 50% found within the wrinkles evaluated in this study.

U2 - 10.12783/asc36/35793

DO - 10.12783/asc36/35793

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SN - 9781605956862

T3 - Proceedings of the American Society for Composites Technical Conference

SP - 670

EP - 683

BT - Proceedings of the American Society for Composites—Thirty-Sixth Technical Conference on Composite Materials

PB - DEStech Publications, Inc.

T2 - 36th Technical Conference of the American Society for Composites 2021: Composites Ingenuity Taking on Challenges in Environment-Energy-Economy, ASC 2021

Y2 - 20 September 2021 through 22 September 2021

ER -

Maes VK , Elsaied BSF , Hallett SR , Kratz J. The Effect of Out-of-Plane Waviness Asymmetry on Laminate Strength. In Proceedings of the American Society for Composites—Thirty-Sixth Technical Conference on Composite Materials. DEStech Publications, Inc. 2021. p. 670-683. (Proceedings of the American Society for Composites Technical Conference). doi: 10.12783/asc36/35793

The Effect of Out-of-Plane Waviness Asymmetry on Laminate Strength

Abstract

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Projects

CerTest: 8034 - EPSRC EP/S017038/1 - Prof Ole Thomsen CerTest

Equipment

HPC (High Performance Computing) and HTC (High Throughput Computing) Facilities

Cite this