Shape Effects of Indenter on the Depth-Sensing Indentation

摘要：

It is revealed that the conventional reduced modulus used in depth-sensing indentation tests is invalid for a flat-ended cylindrical indenter due to the fact that the contact area during the loading is a constant irrelative to load. The load-displacement curve of flat punch is related to the length of the punch and the ratio of the elastic modulus of the indenter to the specimen (the modulus ratio Ei/E). Furthermore, theoretic analysis and finite element simulation demonstrated that,for conical indenter. The measured hardness from depth-sensing indentation tests would increase with increasing modulus ratio because the load increased with the ratio for the same displacement.

关键词： Depth-sensing indentation Indenter modulus Reduced modulus Flat-ended punch

作者: Xinyong Shi Lizhong Liu Yiwang Bao

作者单位: Wuhan University of Technology, Wuhan 430070, P.R. China Key State Laboratory of Green Building Materials,China Building Materials Academy,Beijing 100024,P.R

会议类型: 国际会议

会议名称: Frist Annual Meeting on Testing and Evaluation of Inorganic Materials(第一届全国无机材料测试与评价学术年会)

会议地点: 南昌

会议语种:英文

页码: 105-108

在线出版日期: 2010-04-28（万方平台首次上网日期，不代表论文的发表时间）