New Measuring Method of Three Dimensional Residual Stresses Based on Theory of Inherent Strain

• UEDA Y.

  Osaka University

• FUKUDA Keiji

  Osaka University

• TANIGAWA Masayuki

  Osaka University (Present office)Technical Research Institute, Hitachi Shipbuilding and Engineering Co., Ltd.

抄録

The authors have already proposed the general principles in measurement of residual stresses. In this paper, the authors present a new measuring method of three dimensional residual stresses based on the principle which is simplified by utilizing the characteristics of the distribution of inherent strains induced in a long welded joint. According to this theory, three dimensional inherent strains can be divided into two sets of the components ; one set of components is contained in a cross section parpendicular to the weld line and the other is the longitudinal component which is parallel to the weld line. Taking advantage of this characteristics, stresses induced by the two sets of components of the inherent strains can be estimated separately and as the summation of these stresses the measurement of three dimensional welding residual stresses has become practically possible. With the support of the rational theory, the distributions of residual stresses and longitudinal inherent strains in a multipass welded joint have been measured for the first time. And the estimated residual stresses show a good coincidence with the directly observed stresses on the surfaces of the joint. This implies that the present theory is reliable and applicable to measure such complex internal residual stresses.

収録刊行物

• Transactions of the Japan Welding Research Institute

  Transactions of the Japan Welding Research Institute 8 (2), 249-256, 1979

  大阪大学

キーワード

• Measuring Theory
• Residual Stresses
• Inherent Strains
• Welding Stresses
• Three Dimensional Stresses

詳細情報

• CRID: 1570009752371574656
• NII論文ID: 110006484663
• NII書誌ID: AA00867058
• ISSN: 03874508
• 本文言語コード: en
• データソース種別:
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