Study of dimensional stability of a thick composite panel submitted to environmental changes

DOLINKO, A. E.; MOLIMARD, J.; KAUFMANN, G. H.

Florianópolis, Brasil

Congreso; Speckle 2010; 2010

Universidade Federal de Santa Catarina

Carbon fiber reinforced polymers have become thicker due to its use in aircraft manufacturers. Their manufacturing processes implies the generation of important residual stresses. In this work, a L-shaped thick composite shell is analyzed under moderate temperature changes. A stacking sequence error is voluntarily added in order to simulate possible manufacturing failure. Displacements are measured on the shell front and on its side using a mixed in-plane and out-of-plane DSPI set-up, limiting the zone of interest to region of maximum curvature. Variations of the L shape with temperature are recorded and typical flexure strain effects are outlined. Several parameters of interest can be deduced from the experiment.