An experimental investigation on low-velocity impact response and compression after impact of a stochastic, discontinuous prepreg tape composite

被引：26

作者：

Kravchenko, Sergii G. ^{[2
]}

Volle, Chris ^{[1
]}

Kravchenko, Oleksandr G. ^{[1
]}

机构：

[1] Old Dominion Univ, Dept Mech & Aerosp Engn, Norfolk, VA 23529 USA

[2] Univ British Columbia, Dept Mat Engn, Composites Res Network, Vancouver, BC, Canada

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2021年 / 149卷

关键词：

Low-velocity impact; Impact behavior; Damage tolerance; Ultrasonic C-scan; Discontinuous fiber composite; INTRA-LAMINAR; DAMAGE; RESISTANCE; PERFORMANCE; STRENGTH; TENSILE;

D O I：

10.1016/j.compositesa.2021.106524

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present paper investigated the impact and compression after impact behavior of thin carbon fiber epoxy plates manufactured from prepreg platelet molding compound (PPMC) with two different discontinuous fiber length, 25.5 mm and 12.7 mm, and compared it with the behavior of continuous fiber quasi-isotropic composite laminate with a similar plate thickness. The results of dynamic testing showed that PPMC/12.7 mm exhibited larger amount of absorbed energy, which correlated with larger damage area measured by ultrasonic inspection. Micro-CT analysis showed that a discontinuous fiber composite developed significant amount of throughthickness damage. C-scan measured damage area correlated well with the compression after impact testing results, which indicated that longer fibers provide for better damage tolerance.

引用

页数：19

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