Experimental study on characteristic and mechanism of simulated lunar rock destruction under high energy laser irradiation

The large load and poor heat dissipation of moon rock core drilling leads to the difficulty breaking low sampling efficiency. As a new auxiliary method, laser is expected be applied perturbation in lunar drilling. Revealing fracture characteristics mechanism under irradiation an important basis for realizing laser-assisted sampling. Basalt was used as simulated sample, its mechanical response were analyzed from macro micro point view, failure law different power time explored. results show that sample mainly characterized by local melting dynamic crack propagation, surface temperature follows Gaussian distribution. has greater influence on degree weakening than time. Laser rocks can significantly reduce strength, obvious effects improving efficiency reducing situ disturbance. It provide theoretical technical support assisting future.