Abstract
V-ribbed belts is a friction transmission belt, and is used as an accessory drive belt, which drives an alternator, compressor and water pump using the power of crankshaft. The V-ribbed belts has some ribs, which comes in contact with the pully grooves. The V-ribbed belts constructs of the top fabric, cords, adhesive rubber and rib rubber. There are three failure mode for the fatigue damage accumulation, namely "Cord Pop-out ", "Rib bottom wear ",and "Rib crack ". Furthermore, a "Rib crack" can be classified into the "Rib top crack" for which the rib top is cracked, and the "Rib bottom crack" for which a rib bottom is cracked. In this study, the failure mechanism of the "Rib top crack" and "Rib bottom crack" was discussed caring out some observations and FEA.
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