Abstract

In this paper, the effect of temperature variations (low and high temperatures) was experimentally studied on the impact damages of CFRP laminates. Composite laminates used for this experiment are CF/EPOXY orthotropic laminated plates with two-interfaces [06/906]s and [04/904]s, and CF/PEEK orthotropic laminated plates with two-interfaces [06/906]s. A steel ball launched by the air gun collides against CFRP laminates to generate impact damages. With impact-damaged specimens, nondestructive evaluation (NDE) technique, such as a scanning acoustic microscope (SAM) was performed on the delamination-damaged samples to characterize damage growth using the SAM after impact damages according to the temperatures. Therefore, this study aims experimentally to present the interrelations between the impact energy and impact damages (i.e. delamination area and matrix) of CFRP laminates. (CF/EPOXY, CF/PEEK) subjected to FOD (foreign object damages) under low and high temperatures.

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