摘要
微颗粒对材料的高速冲击与诸多重要应用领域密切相关,比如航天器的微陨石撞击、雾霾颗粒对发动机叶片的冲击、冷喷涂技术等.激光驱动颗粒冲击实验(Laser-Induced Particle Impact Test,LIPIT)于2010年被提出,是一种新型动态加载技术,能够对不同维度的多种材料进行微弹道冲击.相较于其他的微弹道技术,LIPIT独特的优势在于能够对单个微颗粒进行有效操控,进而实现各类材料(尤其是低维材料)的单颗粒微弹道高速冲击.本文回顾了LIPIT的发展历程,介绍了其系统构成及工作原理,对基于LIPIT技术的不同维度靶材的微弹道冲击研究进行了评述,主要内容包括:基于弹道动力学分析的能量耗散评估、微弹道冲击下的能量耗散机制、微弹道冲击导致的动力学现象及其相关的物理规律(包括反弹幂律、附着机制).最后对发展现状和值得进一步研究的问题进行了简要总结.
Abstract
The high-velocity micro-projectile impact is closely related to many important fields,such as micrometeorite impact on spacecraft,dust impact on engine blades,and cold spray.The laser-induced particle impact test(LIPIT)was proposed in 2010 as a new dynamic loading technique.Compared with other micro-projectile techniques,the unique advantage of LIPIT is its ability to effectively manipulate individual microparticle.A single micro-projectile impact on various targets(especially low-dimensional materials)can be performed using the LIPIT technique.LIPIT has been widely used for studying micro-projectile impact on polymers,nanocomposites,metals,and other materials.In this paper,the development history of LIPIT is briefly reviewed,and the work principle and setup of LIPIT are described in detail.Moreover,the impact of the micro-projectile on various targets is summarized,including the characterization of impact resistance based on the micro-ballistic analysis,the energy dissipation mechanism,the dynamic phenomena(rebound and adhesion),and the physical mechanism(power law of rebound and mechanism of adhesion).This review concludes with a summary of the main aspects that deserve further investigation.The included aspects are as follows:(1)microscale LIPIT technique with higher velocity and ballistic accuracy,(2)LIPIT technique down to nanoscale,(3)energy-dissipation-driven design of high-performance impact-resistant materials,(4)transition mechanism of target deformation and particle adhesion,(5)micro-projectile impact on newly developed materials,(6)target dimensional effect of energy dissipation under micro-projectile impact,and(7)dynamic behavior and damage mechanism of microparticle collisions.
基金项目
国家自然科学基金(12125206)
国家自然科学基金(11988102)
国家自然科学基金(11972345)
中国科学院稳定支持基础研究领域青年团队计划(YSBR-096)
维普
万方数据