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Inference of Plastic Deformation in Weldment with Parallel Cracks from Infrared Thermography
Tanaka, Yuichi,Oda, Isamu,Nakano, Akira,Murao, Yuji 대한금속재료학회(대한금속학회) 1998 METALS AND MATERIALS International Vol.4 No.3
Tensile tests are carried out by using the welded plate with two parallel cracks. The effects of the residual stress, the hardened zone by welding and the interaction between cracks on the plastic deformation near cracks and the crack opening displacement are examined by the experiment as well as the elasto plastic finite element analysis. A new technique for evaluating nondestructively the plastic deformation near cracks by using the infrared thermography is proposed. The heated region and the temperature rise measured by the thermography are compared with the plastic zone and the work of plastic deformation obtained by the analysis. The validity and the limitations of the application of the infrared thermography to the evaluation of the plastic deformation are discussed.
Deformation near Parallel Cracks Close to Interface in Bonded Dissimilar Plate
Tanaka, Yuichi,Oda, Isamu,Yamamoto, Mitsuharu 대한금속재료학회(대한금속학회) 1998 METALS AND MATERIALS International Vol.4 No.3
Tensile tests are carried out by using rectangular plate specimens extracted from the explosion clad plate. Artificial parallel cracks are made perpendicularly to the explosive interface in each specimen. When a tensile load is applied perpendicularly to the crack plane, strain, plastic deformation near cracks and crack opening displacement are examined by experiments as well as elasto-plastic finite element analysis. The effects of the material inhomogeneity, the change of material characteristics, the residual stress and the interaction between parallel cracks on the deformation behavior are revealed. The plastic zone around parallel cracks, at relatively low applied stress level, grows mainly ahead of and between two cracks. The interaction between parallel cracks on the crack opening displacement can be explained from the square of stress intensity factor at the low applied stress level and from the plastic deformation at the high applied stress level.
개에 있어서 중증(重症)의 판막상성(瓣上性) 및 판막성폐동맥협착증(瓣性肺動脈狹窄症)에 대한 심박동정지하 (心停止下) 심장막패치법에 의한 1 치험례(治驗例)
백영기(번역자),長屋好昭(Yoshiaki NAGAYA),金本 勇(Isamu KANEMOTO),千村?一(Syuichi CHIMURA),益本友成(Tomonari MASUMOTO),小原公成(Kiminari OHARA),伊藤裕二(Yuji ITO),猪股直美(Naomi INOMATA),竹島昌俊(Masatoshi TAKESHIMA),田中郁江(Ikue TANAKA) 로얄에이알씨 주식회사 2004 로얄동물임상의학 Vol.2 No.4
4개월령 때의 예방접종을 위한 진찰에서 수축기잡음이 청취되었던 1세령의 암컷, 체중 3㎏의 치와와가 각종의 검사에서 중증의 판막상성(瓣上性)-판막성(瓣性)폐동맥협착증으로 진단되었다. 이 증례에 대하여 표면냉각단순저체온마취(表面冷却單純低體溫麻醉)에의한 심장박동 정지하(停止下)에서의 심장막 패치법(Patch method)으로 외과수술을 실시하여 교정에 성공하였다. 수술 후에는 X선 검사에 의하여 심흉격비율(心胸隔比)의 축소와 우심실압(右心室壓)의 저하가 인정되었다. In a one-year-old female Chihuahua, weighing 3㎏, which had shown a systolic murmur at the examination of vaccination at 4 months of age, we diagnosed several supravalvular and valvular pulmonic stenoses using various examinations. Our surgical treatment with the pericardial path-method under cardiac arrest succeeded using simple surface hypothermia. The treatment induced a reduction of the cardiothoracic ratio in radiographic examination and decline of right ventricle pressure after operation.
Gene Expression Profiling for Toxicological Assessment of Manufactured Nanoparticles in Rat Lung
Katsuhide Fujita,Yasuo Morimoto,Akira Ogami,Toshihiko Myojyo,Isamu Tanaka,Manabu Shimada,Wei-Ning Wang,Shigehisa Endoh,Kunio Uchida,Hiroaki Tao,Masaharu Inada,Tetsuya Nakazato,Moritaka Tamura,Kazuhiro 환경독성보건학회 2008 한국독성학회 심포지움 및 학술발표회 Vol.- No.-