CAJ | 학술논문

针对实际应用中的变载工况，在自制的冲击载荷试验台上，用一个钢球冲击超高分子量聚乙烯盘．改变载荷条件下，研究了超高分子量聚乙烯表面的塑性变形情况．采用表面形貌仪，对超高分子量聚乙烯塑性变形产生的凹痕形貌进行测量．结果发现，在相同的冲击载荷作用下，凹痕的外截面直径和凹痕深度均随冲击次数而增加；当载荷增加时，在相同的冲击次数条件下，凹痕的外截面直径和凹痕深度也增加．
침대실제응용중적변재공황，재자제적충격재하시험태상，용일개강구충격초고분자량취을희반．개변재하조건하，연구료초고분자량취을희표면적소성변형정황．채용표면형모의，대초고분자량취을희소성변형산생적요흔형모진행측량．결과발현，재상동적충격재하작용하，요흔적외절면직경화요흔심도균수충격차수이증가；당재하증가시，재상동적충격차수조건하，요흔적외절면직경화요흔심도야증가．
In light of the impacting load conditions in real applications, a UHMW-PE plate is dropped by a steel ball on an impacting load apparatus. The plastic deformation of the UHMW-PE plate is explored by changing the impacting times and the load. Then the surface microtopography was measured by the 3D surface plasmon resonance analyzer. It is found that under the same impacting load, the diameter and depth of the pit increase with the impacting times; when the load is increased, the diameter and depth of the pit also increase under the same impacting time.