高静水圧下の引張圧縮疲労試験装置の試作とこれによる二,三の実験

概要

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A push- pull fatigue testing machine under high pressure up to 6000kg/cm^2 was developed, Using this machine, the preliminary fatigue tests in the low-cycle fatigue range were conducted under the load-cycling conditions with OFHC copper, 5005 Al alloy and S35C carbon steel under hydrostatic pressures up to 4000kg/cm^2. The unnotched fatigue strength showed a slight but definite increase with increasing ambient pressure. No discernible difference was observed in the notched fatigue strength of OFHC copper between 0 and 3000kg/cm^2 ambient pressure. The scanning electron fractograph of unnotched OFHC copper specimens revealed no apparent difference in the striated regions of fatigue-fractured specimens under 3000kg/cm^2 and zero ambient pressure.
社団法人日本材料学会の論文
1972-08-15