Application of eddy load in electromagnetic acoustic emission

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 about eddy load. Due to the local high-intensity stress field generated by the electromagnetically induced high-density current pulse, EMAE can locate small flaws or cracks in thin-walled structures nondestructively to allow inspection of specific areas without loading the whole structure. Presently experimentpsilas load method is direct coupling method that current is injected via electrical terminals. But it needs very high current to produce the local high-intensity stress field. In this paper, eddy load was studied in order to reduce the demand. The finite element analysis of the load coil was done for establishing the coil shape and exciting current.