Compression After Multiple Low Velocity Impacts of NCF, 2D and 3D Woven Composites

Journal article (2019)

Authors

M. Saleh Structural Integrity & Composites - Aerospace Engineering

Hassan M. El-Dessouky

M. Saeedifar Structural Integrity & Composites - Aerospace Engineering

S. Teixeira De Freitas Structural Integrity & Composites - Aerospace Engineering

Richard J. Scaife

D. Zarouchas Structural Integrity & Composites - Aerospace Engineering

Research Group

Structural Integrity & Composites (Aerospace Engineering) (TU Delft)

DOI: https://doi.org/10.1016/j.compositesa.2019.105576

Non-destructive testing Impact behaviour 3-Dimensional reinforcement A. 3-Dimensional reinforcement Damage tolerance A. 3-Dimensional reinforcement, B. Impact behaviour, B. Damage tolerance, D. Non-destructive testing, Repeated impact Repeated impact B. Damage tolerance B. Impact behaviour D. Non-destructive testing

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Published Date

2019

Language

English

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Faculty

Aerospace Engineering

Department

Aerospace Structures & Materials

Research Group

Structural Integrity & Composites

Abstract

This paper investigates the effect of the fabric architecture and the z-binding yarns on the compression after multiple impacts behavior of composites. Four fiber architectures are investigated: non-crimp fabric (NCF), 2D plain weave (2D-PW), 3D orthogonal plain (ORT-PW) and twill (ORT-TW) weave. The specimens were subjected to single and multiple low-velocity impacts at different locations with the same energy level (15 J). Non-destructive techniques including ultrasonic C-scanning, X-ray CT and Digital Image Correlation (DIC) are employed to quantitatively analyze and capture the Barely Visible Impact Damage (BVID) induced in the specimens. Although the absorbed energy was approximately the same, damage was the least in 3D woven architectures. In the case of compression after impact, 3D woven composites demonstrated a progressive damage behavior with the highest residual strength (∼92%) while 2D plain weave and NCF specimens showed suddenly catastrophic damage and the residual strength of ∼65% and ∼55% respectively.

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