S0305-4-1 表面波によるコンロッドのき裂進展評価([S0305-4]計測・疲労強度)

概要

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In this research, the crack growth behavior was investigated by an ultrasound in order to evaluate a fracture splitting method which has been used in the manufacturing process of connecting rod. The test specimen fabricated similar to the connecting rod used the quenched & tempered S50C steel. We used a surface wave to measure the crack growth length in the test specimens with v-notch fabricated by machining and laser method. In this case, the tensile load added to the test specimen using the tensile testing machine. We compared the crack growth length on both specimens with v-notch. As a result, the crack growth on the specimen by laser method is longer than that of specimen by machining method. Also, fracture splitting on both specimens started at about 80% of fracture load.
一般社団法人日本機械学会の論文
2010-09-04