摘要
对超高分子量聚乙烯材料(UHMWPE)进行了单向拉伸、压缩的热红外辐射探测实验,分析了在不同加载速度下UHMWPE材料应力与应变、平均红外辐射温度与应变之间的定性关系。实验结果表明,加载速度越大,红外辐射温度增幅越高;在应力-应变的不同阶段,红外辐射温度表现出不同的增长趋势,在拉伸的初始阶段,UHMWPE材料的红外辐射温度先降后升,在压缩全过程中,随应变增加红外辐射温度(IRT)的变化趋势包括变化幅度较小、迅速近似线性增加、增长速度减缓3个阶段。
Thermal infrared radiation (TIR) detection tests of ultra-high molecular weight polyethylene (UHMWPE) subjected to uniaxial tension and compression were conducted. The authors analyzed the qualitative relations of stress and strain, and average infrared radiation temperature (AIRT) and strain. The experimental results indicated that, the amplification of AIRT positively increased with the loading speed and AIRT showed different tendencies to increase in the different stages of deformation, at the initial stage of tension the AIRT of UHMWPE specimens decreased at first, and then increased. During the whole process of compression, the tendency of AIRT changing with the increase of strain could be divided into three stages: at first the AIRT of UHMWPE specimens changed slightly, then quickly increased with the strain linearly, and at last slowly increased.
出处
《矿业研究与开发》
CAS
北大核心
2005年第2期72-75,共4页
Mining Research and Development
基金
国家自然基金资助项目(59975084).
