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Proceedings Paper

Effects of pre-stresses on impact-induced damage of CFRP laminates
Author(s): Chiaki Miyasaka; Hideaki Kasano; Peter J. Shull
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Paper Abstract

The objective of this study is to experimentally evaluate the effects of the impact-induced damages of Carbon Fiber Reinforced Plastic (CFRP) laminated composites under no stress and pre-stress conditions such as (1) no loading, (2) compressive loading, and (3) tensile loading. The symmetrical 4-points bending apparatus was designed and manufactured for making the pre-stressed conditions. Four kinds of test specimens having laminate configurations of (012/θ20/012) were employed, wherein their ply angles (denoted as "θ") were 30°, 45°, 60°, and 90°. The test specimens were impacted with an air-gun type of impact apparatus. First, a strain change caused by the impact was measured. Second, a mechanical scanning acoustic reflection microscope (SAM: pulse-wave mode) was used to detect an interior damage (e.g., delamination) of the impact-induced specimens.

Paper Details

Date Published: 19 May 2005
PDF: 7 pages
Proc. SPIE 5767, Nondestructive Evaluation and Health Monitoring of Aerospace Materials, Composites, and Civil Infrastructure IV, (19 May 2005); doi: 10.1117/12.601771
Show Author Affiliations
Chiaki Miyasaka, The Pennsylvania State Univ. (United States)
Hideaki Kasano, Takushoku Univ. (Japan)
Peter J. Shull, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 5767:
Nondestructive Evaluation and Health Monitoring of Aerospace Materials, Composites, and Civil Infrastructure IV
Peter J. Shull; Andrew L. Gyekenyesi; Aftab A. Mufti, Editor(s)

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