Linear Regression of Relative Elasticity

Abstract

The present paper discusses the leather softening by shearing. Under the assumptions that the shearing speed and shearing direction are fixed we establish the procedure which allows us to choose the set of shearing parameters for the softening of a leather sample to 5.8 % relative elasticity. We show that a regime-choosing problem can be treated in an elementary statistical way. The softening regime procedure is based on the linear regressive equation between the relative increase of lether elasticity, shearing angle and the number of shearing cycles. By using statistical methods it is proved that the obtained regressive equation can be used for the relative increase of leather elasticity prediction. The proposed softening procedure is tested experimentally.