Abstract: The study of the propagation and coupling law of laser-induced shock wave in laminated materials is the basis of the realization of this technology. In this paper, a high energy laser-induced plasma shock wave impact bonded specimen was designed, and a numerical model of the laser impact test specimen was established. The coupling process of stress wave propagation in the adhesive layer was simulated, and the particle velocity on the back obtained by the test and simulation was compared to verify the finite element model. On this basis, the simulation method is used to explore the stress wave propagation coupling law in the bond layer when the laser impact bonded specimen with different energy, pulse width and spot diameter. The results show that the laser energy and pulse width both affect the stress wave propagation in the rubber layer. With the increase of laser energy, the peak free particle velocity on the back of the specimen and maximum tensile stress value increase, and the maximum tensile stress depth remains unchanged. With the increase of laser pulse width, the peak free particle velocity on the back of the specimen increases, the maximum tensile stress value increases, and the maximum tensile stress depth decreases.

Key words: laser impact, full-fiber photon Doppler velocimetry, stress wave, propagation coupling law, composites