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タイトル: ぜい性薄板の熱線割断と寸法効果
その他のタイトル: Thermal Stress Cleaving of a Brittle Thin Strip Using Line Heat Source and the Size Effect
著者: 才本, 明秀 / 沢田, 博司 / 今井, 康文
著者(別表記) : Saimoto, Akihide / Sawada, Hiroshi / Imai, Yasufumi
発行日: 1998年 8月15日
出版者: 日本材料学会 / The Society of Materials Science, Japan
引用: 材料, 47(8), pp.813-818; 1998
抄録: A non-uniform temperature rise in the vicinity of crack tip often causes crack propagation. Taking advantage of this phenomenon, some brittle materials can be cleaved without any cutting tools but with an adequate controlling of a temperature distribution in the body. In the present paper, based on the linear fracture mechanics, a possibility of the thermal stress cleaving is discussed for a brittle rectangular plate which is heated along its symmetrical axis. A time dependent thermal stress intensity factor of an edge crack was analyzed systematically by changing the plate dimensions and crack length. Experimental findings were compared with the analytical results and good agreements were found. Especially, the crack extension characteristics in a cleaving test of a lime-soda glass can be well understood through the dependence of stress intensity factor on heating time and crack tip location.
記述: <特集>破壊力学
キーワード: Termal stress cleaving / Line heat source / Plane thermoelasticity / Stress intensity factor / Brittle fracture
URI: http://hdl.handle.net/10069/24657
ISSN: 05145163
権利: Copyright© 日本材料学会
資料タイプ: Journal Article
原稿種類: publisher
出現コレクション:060 学術雑誌論文

引用URI : http://hdl.handle.net/10069/24657



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