INVERSE COMPUTATION OF OPTICAL-ABSORPTION COEFFICIENT IN INHOMOGENEOUS MATERIAL WITH VARIED THERMAL CONDUCTIVITY  

作　　者：Zhu JianxinDept.ofMath.,ZhejiangUniv.,Hangzhou310027,China 

出　　处：《Applied Mathematics(A Journal of Chinese Universities)》2002年第2期155-163,共9页高校应用数学学报（英文版）（B辑）

基　　金：Supported by the Doctoral Fund of the Education Ministry of China(1 9990 3 3 5 1 6 ) and the NationalNatural Science Foundation of China(1 0 0 71 0 73 )

摘　　要：In this paper,for an inhomogeneous material in which the thermal conductivity varies as a function of depth,an efficient treatment is proposed to inversely calculate the depth distri- bution of optical- absorption coefficientby the surface temperature of the material.It is demon- strated that the results of inverse computation by that method are more similar to the experi- mental ones measured by some destructive method.Thus,the treatmentis more feasible to non- destructively estimate the distribution.In this paper,for an inhomogeneous material in which the thermal conductivity varies as a function of depth,an efficient treatment is proposed to inversely calculate the depth distri- bution of optical- absorption coefficientby the surface temperature of the material.It is demon- strated that the results of inverse computation by that method are more similar to the experi- mental ones measured by some destructive method.Thus,the treatmentis more feasible to non- destructively estimate the distribution.

关 键 词：nondestructive measurement DIODE optical- absorption inverse problem mathematical mod- elling 

分 类 号：O439[机械工程—光学工程] O242[理学—光学]