Study of electromagnetic acoustic emission for non-destructive testing

In this paper, the finite element analysis of a recently developed electromagnetic acoustic emission (EMAE) which can be used for damage assessment of thin walled conducting structures has been reported. Due to the local high-intensity stress field generated by the electro-magnetically induced high-density current pulse, EMAE can locate small flaws or cracks in thin-walled structures non-destructively to allow inspection of specific areas without loading the whole structure. This paper built the finite element model of EMAE, analyzed specimen deformations in different conditions and compares effects of several load factors on electromagnetic acoustic emission. The results of this work suggest the relationship between the electromagnetic stimulation and the deformations.