Chapter 36. Damage Behavior and Residual Fatigue Bending Strength of Impact-Induced CFRP Composites

  1. Don Bray
  1. Kwang-Hee Im and
  2. In-Young Yang

Published Online: 23 MAR 2010

DOI: 10.1002/9780470294499.ch36

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4

22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4

How to Cite

Im, K.-H. and Yang, I.-Y. (1998) Damage Behavior and Residual Fatigue Bending Strength of Impact-Induced CFRP Composites, in 22nd Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 19, Issue 4 (ed D. Bray), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294499.ch36

Author Information

  1. Department of Mechanical Design Engineering Chosun University 375 Sosok-dong, Dong-gu Kwangju 501–759, Korea

Publication History

  1. Published Online: 23 MAR 2010
  2. Published Print: 1 JAN 1998

ISBN Information

Print ISBN: 9780470375594

Online ISBN: 9780470294499

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Keywords:

  • occupational;
  • attributable;
  • crystalline;
  • prognostic;
  • liproproteinaceous material

Summary

This paper evaluates the static and fatigue bending strengths of carbon fiber reinforced plastic (CFRP) laminates, and the fracture mechanisms experimentally based on a scanning acoustic microscope (SAM) when subjected to impact damages, i. e., foreign object damages (FOD). Composite laminates used in this experiment are CF/EPOXY and CF/PEEK orthotropy laminated plates which consist of two-interfaces [0°4/90°4]s. A steel ball launched by an air gun collides against CFRP laminates to generate impact damages. The damage growth during bending fatigue test is observed by the SAM. When the impacted side is compressed, the residual fatigue bending strength of CF/PEEK is greater than that of CF/EPOXY. On the other hand, when the impacted side is in tension, the residual fatigue bending strength of CF/PEEK is smaller than that of CF/EPOXY. In the case of impacted-side compression, the fracture propagates from the transverse crack generated near the impact point. In the case of impacted-side tension, on the other hand, the fracture develops toward the impact point from the edge of delaminations on the interface farther to the impact point.