| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an evaluation method capable of evaluating the buckling resistance of a conveyor belt with higher precision without newly performing the bending test of a test sample. Ž<P>SOLUTION: The bending test of a plurality of kinds of conveyor belts having core bodies which have different specifications changed in the lamination number, thicknesses and warp yarn crimp ratios [(L-P)/P] of canvas layers 3 having a plain weave structure is performed to preliminarily grasp the relation between the Young's moduli, thicknesses and crimp ratios of the canvas layers 3 and the presence of the occurrence of the buckling of the conveyor belts and, from the coefficients A and B set by the relation preliminarily grasped on the basis of the warp yarn crimp ratio C of the canvas layer 3 receiving the bending of the smallest radius of curvature at the time of operation of the conveyor belt of a plurality of the laminated canvas layers 3 and the Young's modulus and thickness of the canvas layer 3, the buckling occurring diameter Y of the conveyor belt is calculated according to the formula (1):Y=-A×ln(C)+B. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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