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- Title
Review of Low-velocity Impact Properties of Z-pinned Composite Materials.
- Authors
SHI Jianmeng; DU Jinbo; ZHANG Haowei; BI Yunbo
- Abstract
This article summarizes the Z-pining bridging mechanism, in-plane waviness of fiber owing to Z-pin insertion and propagation of rich resin region. This paper mainly analyzes the effect of Z-pin volume content, diameter, insertion angle, thickness of specimen, and layup on the impact properties and residual mechanical properties. The results indicate Z-pin has not significantly increased the impact property under lower incident energy. Z-pin has no effect on the delamination threshold. Z-pin can efficiently increase the delamination resistance to middle-thickness (4. 5 mm) composite materials. Z-pin does not change the failure mode of compression after impact and effectively increases the residual strength under specific level of incident energy. Z-pin has no effect on fatigue property to specimens with barely visible impact damage. Under a higher incident energy, the efficiency in fatigue strength increases with increasing Z-pin volume fraction.
- Subjects
FATIGUE limit; COMPOSITE materials; MECHANICAL drawing; FAILURE mode &; effects analysis
- Publication
Journal of Materials Science & Engineering (1673-2812), 2022, Vol 40, Issue 6, p1067
- ISSN
1673-2812
- Publication type
Article
- DOI
10.14136/j.cnki.issn1673-2812.2022.06.023