Study on the Micro-damage Evolution of Aluminum Alloy under Different Stress States Based on Acoustic Emission

摘要

Acoustic emission (AE) was implemented to test the microdamage evolution process of two aluminum alloy materials (1060 and 6063). Two types of notched specimens (shear and tensile) had been used. The multicomponent variate D matrix and probabilistic entropy were applied to analyze the diversity of the microdamage evolution of different materials under different stress states. And the fracture surfaces were observed by scanning electron microscope (SEM). Consequently, Probabilistic entropy results can effectively distinguish the difference of microdamage evolution of the aluminum alloys under two kinds of stress states.