Experimental investigation of failure process in compressed channel-section GFRP laminate columns assisted with the acoustic emission method

The experimental investigations of thin-walled channel section columns subjected to static compression are described. The columns under consideration were made of eight layers of a glass/epoxy unidirectional prepreg tape, with the autoclaving technique. Six different symmetrical layer arrangements were taken into account. The tests were performed on a Zwick Z100/SN3A universal testing machine with special self-aligning grips. The columns under...