An acoustic emission source localization approach based on time-reversal technology for additive manufacturing

The metal additive manufacturing process can inevitably lead to a great temperature gradient in the workpiece. Therefore, thermal stress deformation and defects seriously affect processing quality. In this paper, an array acoustic probe is designed on base plate with consideration of time reversal technology. Corresponding simulations implemented, which are verify ability detecting positioning workpiece release emission signal. simulation results demonstrate that proposed method position monitor random emission.