模拟月尘颗粒真空辐射条件下粘附力测试技术研究

Research on Adhesion Force Test Technology of Simulant Lunar Dust Grain under Vacuum and Radiation Conditions

目的研究适合于真空辐射条件下颗粒粘附力的测试技术。方法采用调研、分析和计算的方法建立颗粒物粘附力测试方法。首先调研分析大气条件下颗粒粘附力的测试方法,对比分析原子力显微镜测试方法、离心测试方法、静电测试方法、振动分离测试方法以及激光测试方法的适用性。结果现有测试方法并不适用于真空辐射条件下颗粒物粘附力的测试。针对该问题建立了基于颗粒运动的粘附力分析测试方法,通过该方法可获取颗粒带电量和粘附力,给出了基于该方法的试验系统和试验装置的初步设计。结论该测试方法可行,能够满足模拟月尘颗粒粘附力测试的要求。

Objective To study grain adhesion force test technology suitable for vacuum and radiation environment. Methods Grain adhesion force test technology was established by investigation, analysis and calculation. First of all, the grain adhesion force test technology under atmospheric conditions was investigated, and the applicability of atomic force microscopy testing method, centrifugal test method, electrostatic test method, vibration detachment test method and laser test method was comparatively analyzed. Results All the existing test methods were not suitable for the grain adhesion test in vacuum and radiation conditions. Focusing on the need of the test, the paper established the adhesion force analyzing and testing method, which could give both the charge and the adhesion force based on grain movement. Based on this method, preliminary design of test system and test device was given. Conclusion This test method was feasible and could satisfy the demand of simulant lunar dust grain adhesion force test.