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Barely visible impact damage assessment in laminated composites using acoustic emission

Barely visible impact damage assessment in laminated composites using acoustic emission
Barely visible impact damage assessment in laminated composites using acoustic emission
Despite the key advantages of Fiber Reinforced Polymer (FRP) composites, they are susceptible to Barely Visible Impact Damage (BVID) under transverse loadings. This study investigates BVID in two quasi-isotropic carbon/epoxy laminates under quasi-static indentation and Low-Velocity Impact (LVI) loadings using Acoustic Emission (AE). First, the evolution of interlaminar and intralaminar damages is studied by analyzing the AE signals of the indentation test using b-value and sentry function methods. Then, the specimens are subjected to the LVI loading and the induced damages are compared with the indentation test and the percentage of each damage mechanism is calculated using Wavelet Packet Transform (WPT). In consistent with the mechanical data, ultrasonic C-scan and digital camera images of the specimens, the AE results show a considerable similarity between the induced BVID under quasi-static indentation and LVI tests. Finally, the obtained results show that AE is a powerful tool to study BVID in laminated composites under quasi-static and dynamic transverse loadings.
acoustic emission, B-value, barely visible impact damage, indentation, laminated composites, low-velocity impact, sentry function, wavelet packet transform
1359-8368
180-192
Saeedifar, Milad
4915d58c-6442-44d9-85f9-793182919c34
Najafabadi, Mehdi Ahmadi
174ae06e-8827-4774-995d-474aa2ab5573
Zarouchas, Dimitrios
de780221-6fe0-4b6f-a099-29bc74064430
Toudeshky, Hossein Hosseini
2ed4def1-e1bd-458b-ab71-fbe74de2c5e2
Jalalvand, Meisam
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2
Saeedifar, Milad
4915d58c-6442-44d9-85f9-793182919c34
Najafabadi, Mehdi Ahmadi
174ae06e-8827-4774-995d-474aa2ab5573
Zarouchas, Dimitrios
de780221-6fe0-4b6f-a099-29bc74064430
Toudeshky, Hossein Hosseini
2ed4def1-e1bd-458b-ab71-fbe74de2c5e2
Jalalvand, Meisam
21ef0df8-fc7c-4466-a2fc-ee98ed3408a2

Saeedifar, Milad, Najafabadi, Mehdi Ahmadi, Zarouchas, Dimitrios, Toudeshky, Hossein Hosseini and Jalalvand, Meisam (2018) Barely visible impact damage assessment in laminated composites using acoustic emission. Composites Part B: Engineering, 152, 180-192. (doi:10.1016/j.compositesb.2018.07.016).

Record type: Article

Abstract

Despite the key advantages of Fiber Reinforced Polymer (FRP) composites, they are susceptible to Barely Visible Impact Damage (BVID) under transverse loadings. This study investigates BVID in two quasi-isotropic carbon/epoxy laminates under quasi-static indentation and Low-Velocity Impact (LVI) loadings using Acoustic Emission (AE). First, the evolution of interlaminar and intralaminar damages is studied by analyzing the AE signals of the indentation test using b-value and sentry function methods. Then, the specimens are subjected to the LVI loading and the induced damages are compared with the indentation test and the percentage of each damage mechanism is calculated using Wavelet Packet Transform (WPT). In consistent with the mechanical data, ultrasonic C-scan and digital camera images of the specimens, the AE results show a considerable similarity between the induced BVID under quasi-static indentation and LVI tests. Finally, the obtained results show that AE is a powerful tool to study BVID in laminated composites under quasi-static and dynamic transverse loadings.

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More information

Accepted/In Press date: 10 July 2018
e-pub ahead of print date: 11 July 2018
Published date: 1 November 2018
Keywords: acoustic emission, B-value, barely visible impact damage, indentation, laminated composites, low-velocity impact, sentry function, wavelet packet transform

Identifiers

Local EPrints ID: 446798
URI: http://eprints.soton.ac.uk/id/eprint/446798
ISSN: 1359-8368
PURE UUID: 3343a556-8902-44cc-9423-d3cfd64ebf4e
ORCID for Meisam Jalalvand: ORCID iD orcid.org/0000-0003-4691-6252

Catalogue record

Date deposited: 23 Feb 2021 17:30
Last modified: 16 Sep 2021 11:14

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Contributors

Author: Milad Saeedifar
Author: Mehdi Ahmadi Najafabadi
Author: Dimitrios Zarouchas
Author: Hossein Hosseini Toudeshky

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