摘要
Twenty one joints were made with Brazilian tests and each surface was scanned by the Talysurf CLI 2000. Morphological characteristics of joint surface were quantified by statistical and textural parameters. By the contrast of these parameters between both sides of each coupled joint, the following conclusions are drawn. The upper and lower surfaces of coupled joints have approximately equal values of Sp（maximum height of joint surface）, Sa（arithmetic mean height of joint surface） and Sq（root mean square height of joint surface）, but the Ssk（skewness of the height distribution of joint surface） values of the two surfaces of a coupled joint are different, one is positive while the other is negative. The Saj（auto-correlation length） parameter values of both surfaces of each coupled joint are quite close, and the S^（texture aspect ratio） values have the same situation to the Sal parameter, but the same parameters of different surfaces have big differences which illustrates its own characteristics of each joint. The two surfaces of each coupled joint have similar values of θp （mean profile angle） which can be used to deduce the value of θp each other.
Twenty one joints were made with Brazilian tests and each surface was scanned by the Talysurf CLI 2000.Morphological characteristics of joint surface were quantified by statistical and textural parameters.By the contrast of these parameters between both sides of each coupled joint,the following conclusions are drawn.The upper and lower surfaces of coupled joints have approximately equal values of Sp(maximum height of joint surface),Sa(arithmetic mean height of joint surface) and Sq(root mean square height of joint surface),but the Ssk(skewness of the height distribution of joint surface) values of the two surfaces of a coupled joint are different,one is positive while the other is negative.The Sal(auto-correlation length) parameter values of both surfaces of each coupled joint are quite close,and the Str(texture aspect ratio) values have the same situation to the S al parameter,but the same parameters of different surfaces have big differences which illustrates its own characteristics of each joint.The two surfaces of each coupled joint have similar values of ■p(mean profile angle) which can be used to deduce the value of ■p each other.
基金
Project(51174228) supported by the National Natural Science Foundation of China
Project(2011ssxt275) supported by the Graduate Students’Thesis Innovation Foundation of Central South University,China
Project(11MX22) supported by the Central South University Students’ Innovation Foundation of the Mittal Company,China
