摘要
使用红外热成像技术监测了光弹性材料变形过程中3．6～4．6μm的红外辐射变化．发现了通过相减去噪和插值处理后得到的红外辐射等温线和应力光图中的等和线存在一定的对应关系，等和线条纹和红外辐射等温线的形状相似，不同应力区等和线条纹和红外辐射等温线有明显的对应，拉应力区和压应力区分别对应着红外辐射热像的降温区和升温区，有效地实现固体材料弹性变形过程中的应力状态的判别．研究成果对于岩石、混凝土等非线性材料变形破裂过程的应力状态变化规律及其定量化分析有重要的借鉴和指导作用．
By using thermal infrared radiation （TIR） to detect the photoelastical material, IR isothermal fringes were obtained through thermal infrared images subtraction and data interpolation. Corresponding relationship exists between IR isothermal fringes and isopachics, for example, shapes are very similar, the same characteristic in same stress field, tensile stress field, and compressive stress field correspond to the lower thermal region and higher thermal region respectively. The research results are practically meaningful for stress characteristic determination, and quantitative analysis of the nonlinear materials failure such as coal rock and concrete.
出处
《河南理工大学学报（自然科学版）》
CAS
2006年第5期364-367,共4页
Journal of Henan Polytechnic University（Natural Science）
基金
国家自然科学基金资助项目(50374069)
关键词
红外辐射
热弹性效应
等和线
红外辐射等温线
infrared radiation
thermoelastic effect
isopachics
IR isothermal fringe
