書誌事項
- タイトル別名
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- Estimation of Local Mechanical Properties of Steels by Hardness Tests and Its Application to Welded Pipes
- カタサ シケン ニ ヨル タンソコウ ノ キョクショ リキガク トクセイ ノ スイテイ ト ハイカン ヨウセツブ エ ノ テキヨウ
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抄録
Recent surge for seismic resistance requires an evaluation for welded pipes under mechanical conditions including plastic deformation. Although the welded metal and the heat affected zone have different mechanical properties compared with those of the base material, these local characteristics are difficult to measure. Indentation test is one of the possible solutions for evaluating local mechanical properties including plastic stress-strain response, however, there are many experimental difficulties for the measurement. The present study aims to modify the method simple and convenient using an observation of dents similar to the conventional hardness testing. The modified method was applied to weld joints of piping steels and utilized to investigate the influence of local mechanical properties of the weld metal on the surrounding stress distribution. The piping steels exhibit remarkable yield elongation under the lower yield point, which is not taken into account in the indentation tests measuring the local mechanical properties. Stress-strain response was evaluated under the tensile test using a digital image correlation technique, by which local and bulk strains could be obtained simultaneously. Based on the result, limitations of the indentation method were discussed.
収録刊行物
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- 圧力技術
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圧力技術 54 (1), 16-24, 2016
一般社団法人 日本高圧力技術協会
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キーワード
詳細情報 詳細情報について
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- CRID
- 1390282679594791168
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- NII論文ID
- 130005126555
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- NII書誌ID
- AN00011762
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- ISSN
- 13479598
- 03870154
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- NDL書誌ID
- 027093106
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可