The Effects of Temperature Change on the Bending Strength of CF/PEEK Laminates after Impact

CF/PEEK laminates for high efficiency space structure are subjected to Foreign Object Damage(FOD). In this paper, the effects of temperature change in the laminates on the impact damages (interlaminar separation and transverse crack) and the relationship between residual life and impact damages are...

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Bibliographic Details
Published in:Key engineering materials 2004-01, Vol.270-273, p.1917-1922
Main Authors: Ra, Seung Woo, Yang, In Young, Kim, Young Nam
Format: Article
Language:English
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Summary:CF/PEEK laminates for high efficiency space structure are subjected to Foreign Object Damage(FOD). In this paper, the effects of temperature change in the laminates on the impact damages (interlaminar separation and transverse crack) and the relationship between residual life and impact damages are experimentally investigated. Composite laminates used in this experiment are CF/PEEK orthotropic laminated plates, which have two-interfaces [04/908/04]. A steel ball launched by an air gun collides against CF/PEEK laminates to generate impact damages. And then CF/PEEK specimens with impact damages were observed by a scanning acoustic microscope at room and high temperatures. The results revealed various relations, including the delamination area vs. temperature change, the bending strength vs. impact energy, and the residual bending strength vs. impact damage of CF/PEEK laminates.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.270-273.1917