Abstract Wear of seal materials is a widespread problem in the aerospace, petrochemical, and electric power fields, leading not only to low efficiency mechanical equipment, but also increased energy consumption reduced safety performance. Therefore, this paper establishes SCA-wear model based on tensile constraint algorithm calculate analyze friction wear performance materials. The coefficients...

babbitt is a white silvery alloy that composed of tin, lead, copper and antimony. this alloy is the most current bearing alloy in industrial applications. the characteristics of this alloy, such as high wearing resistance and low coefficient of friction, have converted it into a bearing cover. the target of this study is investigation on the effects of alloy elements on wearing and micro-struct...

The physical properties of bovine prothrombin preparations have been described in this journal (1). Although methods for obtaining bovine thrombin are now also available (a), the physical properties, including the molecular weight, have not been described. Here we report values for the sedimentation coefficient, diffusion coefficient, intrinsic viscosity, frictional ratio, molecular weight, and...

The thermal response of a magnetoresistive head is analyzed for frictional heating between the head surface and dust particles or other asperities on the recording medium surface during relative motion of head and medium. A theoretical model is presented showing that pulses are induced in the output of a magnetoresistive head as a result of this frictional heating. The model predicts the depend...

warp and weft spacing and its coefficient of variation affect the physical properties of fabrics such as fabric hand, frictional and mechanical properties. in this paper the weft and warp spacing and its coefficient of variation for plain weave is calculated using fourier transforms. different methods have been used in this work including autocorrelation function. first, two dimensional power s...