THERMAL SCIENCE

International Scientific Journal

Xue-Min Zhou

,

Chuo Zhang

,

Jun-Jun Liu

,

Hai-Chun Hao

,

Zheng Gao

,

Yan Wu

,

Qiu-Yue Li

,

Xiang-Yue Wen

,

Xuan Wang

,

Zhao-Ying Yang

EXPERIMENTAL STUDY ON CHARACTERISTIC AND MECHANISM OF SIMULATED LUNAR ROCK DESTRUCTION UNDER HIGH ENERGY LASER IRRADIATION

ABSTRACT
The large load and poor heat dissipation of moon rock core drilling leads to the difficulty of rock breaking and low drilling and sampling efficiency. As a new auxiliary rock breaking method, laser rock breaking is expected to be applied to perturbation sampling in lunar rock drilling. Revealing the fracture characteristics and mechanism of rock under laser irradiation is an important basis for realizing laser-assisted lunar rock sampling. Basalt was used as simulated lunar rock sample, and its mechanical response characteristics under laser irradiation were analyzed from macro to micro point of view, and the failure law under different laser power and different irradiation time was explored. The results show that the failure of the sample under laser irradiation is mainly characterized by local rock melting and dynamic crack propagation, and the surface temperature of the sample follows the characteristics of Gaussian distribution. The laser power has a greater influence on the degree of rock weakening than the irradiation time. Laser irradiation of rocks can significantly reduce rock strength, and has obvious effects on improving rock breaking efficiency and reducing in situ disturbance. It is expected to provide theoretical and technical support for assisting lunar rock drilling and sampling in the future.
KEYWORDS
Laser irradiation, Simulated lunar rock, temperature field, Failure characteristic, Crack propagation
PAPER SUBMITTED: 2022-08-07
PAPER REVISED: 2022-11-19
PAPER ACCEPTED: 2022-11-22
PUBLISHED ONLINE: 2023-01-21
DOI REFERENCE: https://doi.org/10.2298/TSCI220807003Z
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 1, PAGES [455 - 463]
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Experimental study on characteristic and mechanism of simulated lunar rock destruction under high energy laser irradiation

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence