Evaluation on Fatigue Characteristics of Thin Plates for Diaphragms(<Special Issue>Reliability Engineering in Materials and Structures)

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概要

• 論文の詳細を見る

• Diaphragms made of stainless steel plates are widely used as switching parts in electrical devices. Since the cyclic loading is applied to these diaphragms by the repeated switching mode of on/off, the estimation of the fatigue life of diaphragms is very important. The fatigue characteristics of the diaphragm must be discussed considering the large scatter of material properties induced by the anisotropy. In this study, the tensile and the fatigue tests have been carried out for some specimens with a direction to cold rolling direction. A pulley driving system has been adopted as a fatigue testing apparatus because the load can be applied even when the thickness of the specimen is less than 0.1 mm. From the experiment, it is recognized that the experimental data is scattered largely. In addition, the residual stress is generated by a press forming process and the stress acts on the diaphragm as a mean stress. In order to estimate the reliability of a diaphragm, therefore, the Goodman diagram with a design margin which can be considered the mean stress for fatigue can be obtained. We have proposed the method which can evaluate the reliability of a diaphragm to design life by Goodman diagram.

• 社団法人日本材料学会の論文
• 2002-09-15

著者

• ZAKO Masaru

  Department of Manufacturing Science, Osaka University

• Fukuda Masao

  Tsuyama Matsushita Electric Industrial Co. Ltd.

• KURASHIKI Tetsusei

  Department of Manufacturing Science, Osaka University

• HANAKI Satoshi

  Department of Mechanical Engineering, Himeji Institute of Technology University

• NAKAI Hiroaki

  Osaka University

• ITO Atsuji

  Matsushita Electric Industrial Co. Ltd

• NAKAI Hiroaki

  Graduate Student of Osaka University, Japan

• Nakai H

  Department Of Pediatrics Nara Medical University

• Ito Atsuji

  Matsushita Electric Industrial Co. Ltd.

• Nakai Hiroaki

  Graduate Student Of Osaka University Japan

• Hanaki S

  Department Of Mechanical Engineering Himeji Institute Of Technology University

• Kurashiki Tetsusei

  Department Of Manufacturing Science Osaka University

• Hanaki Satoshi

  Department Of Mechanical Engineering Himeji Institute Of Technology University

• Nakai H

  Graduate Student Of Osaka University Japan

• Zako M

  Osaka Univ. Suita City Jpn

• Zako Masaru

  Department Of Management Of Industry And Technology Graduate School Of Engineering Osaka University

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