油圧・ばね式高速衝撃疲労試験機の開発と二,三の実験結果

概要

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There are many machine parts and structural members such as pile hammer, valve spring and power cut-off devices which are subjected to impact load. And impact fatigue failures are characterized in many cases by much shorter lives than predicted ones based on the usual life estimation technique. To prevent the failures of such parts and members, it is important to establish the design standard for the elements receiving impact load. Hydraulic-disc spring type high speed impact fatigue machine was developed using Hopkinson bar principle in order to obtain fundamental S-N data covering long life range under simple impact stress pattern. It was confirmed that the Hydraulic-disc spring device to drive an impact cylinder at high frequency gave good performance as Hopkinson bar type impact testing machine. And the feature of S-N data for two sorts of carbon steels obtained with this machine showed good agreement with the S-N characteristics of the carbon steels published hitherto.
一般社団法人日本機械学会の論文
1987-07-25