Detection of bonding strength of metal matrix composite structure using nonlinear ultrasonic mixing method

The nonlinear ultrasonic mixing method was used to detect the bonding strength of metal matrix composite structure. Based on the resonance conditions and the curing mechanism, experiments were conducted for detecting the aluminum alloy-acrylate bonding structures with different curing agent content. A pair of shear waves was chose as the primary waves to measure the nonlinear mixing parameters under different fundamental cycle. In order to analyze the relationship between bonding strength and nonlinear mixing parameters, the bonding strength of specimens were calibrated by tensile test, and tensile sections of specimens were investigated by SEM. The results demonstrated that nonlinear parameters decrease with the increase of bonding strength under different fundamental cycle. It shows that the nonlinear ultrasonic mixing method is sensitive to bonding strength of the metal matrix composite structure. Therefore, the nonlinear ultrasonic mixing method can be applied to characterize the deterioration of bonding strength of similar structure.