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Taiki Yukawa, Masaaki Kimura, Masahiro Kusaka, Koichi Kaizu, Akiyoshi ...
Session ID: 101
Published: 2010
Released on J-STAGE: November 09, 2010
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Tomohiro Maeda, Masaaki Kimura, Masahiro Kusaka, Koichi Kaizu
Session ID: 102
Published: 2010
Released on J-STAGE: November 09, 2010
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Masayoshi Hasegawa, Ryoma Kaku
Session ID: 103
Published: 2010
Released on J-STAGE: November 09, 2010
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DAIKI MIURA, Mitsuru Nakamura, Takashi Umemura
Session ID: 104
Published: 2010
Released on J-STAGE: November 09, 2010
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Frction Welding Characteristics between Cemented Carbides and Cermet Materials
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Manabu OGURA, Akiyoshi FUJI, Hideaki TOHKUNI, Ryo TSUCHIDA, Masaaki KI ...
Session ID: 105
Published: 2010
Released on J-STAGE: November 09, 2010
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– Study with Insert Material-
Keiichi YASUKAWA, Akiyoshi FUJI, Hideaki TOHKUNI, Masaaki KIMURA
Session ID: 106
Published: 2010
Released on J-STAGE: November 09, 2010
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Study with Insert Material
Ryo NAKASHIMA, Akiyoshi FUJI, Hideaki TOHKUNI, Masaaki KIMURA
Session ID: 107
Published: 2010
Released on J-STAGE: November 09, 2010
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Akiyoshi FUJI, Shinya ITO, You Chul KIM, Jae Yik LEE, Masaaki KIMURA
Session ID: 108
Published: 2010
Released on J-STAGE: November 09, 2010
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Effect of Welding Tip Geometry and Insert Metal
Shota Shuri, Takehiko Watanabe, Tomohiro Sasaki, Atsushi Yanagisawa
Session ID: 109
Published: 2010
Released on J-STAGE: November 09, 2010
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Takuto Goto, Takehiko Watanabe, Atsushi Sasaki, Atsushi Yanagisawa
Session ID: 110
Published: 2010
Released on J-STAGE: November 09, 2010
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Tomokatsu Aizawa, Keigo Okagawa
Session ID: 111
Published: 2010
Released on J-STAGE: November 09, 2010
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Yoshitaka SUGIYAMA, Tomokatsu AIZAWA, Keigo OKAGAWA
Session ID: 112
Published: 2010
Released on J-STAGE: November 09, 2010
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Development of Welding Monitoring System for In-process Quality Control of Thick Walled Pipe(Report 1)
Yoshihiro Fujita, Tsuyoshi Ogawa, Syozo Hirano, Satoru Asai, Tatsuya O ...
Session ID: 113
Published: 2010
Released on J-STAGE: November 09, 2010
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The in-process quality control system has been systematized utilizing optical sensor and computer. This system consisted of three main systems, i.e. the monitoring system for welding condition, the monitoring system for weld pool shape, and the visualization system for weld bead shape. The in-process quality control system realized the improvement of weld quality and the efficiency upgrade of welding operation.
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Development of Welding Monitoring System for In-process Quality Control of Thick Walled Pipe(Report 2)
Yoshihiro Fujita, Tsuyoshi Ogawa, Syozo Hirano, Satoru Asai, Setsu Yam ...
Session ID: 114
Published: 2010
Released on J-STAGE: November 09, 2010
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The visualization system for inner defect was established using Laser-ultrasonic in-process testing (LUT) technique and Synthesis Aperture Focus Technique (SAFT). The in-process quality control system realized the improvement of weld quality and the efficiency upgrade of welding operation and was applied to thick walled pipe welding to confirm the availability of this system for practical purposes.
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Taro Takanashi, Satoshi Yamane, Toru Nakazima, Hikaru Yamamoto
Session ID: 115
Published: 2010
Released on J-STAGE: November 09, 2010
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You-Chul Kim, Do-Hyun Park
Session ID: 116
Published: 2010
Released on J-STAGE: November 09, 2010
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It was reported that welding imperfection was predicted with high accuracy by thermal elastic-plastic analysis
based on the infinitesimal deformation theory. On the other way, in the case that the ultimate strength of thin plate is predicted, elastic-plastic large deformation analysis is carried out. In this paper, the significance of welding imperfection obtained from thermal elastic-plastic analysis based on the large deformation is elucidated.
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Takahiro Onda, Shinsuke Itoh, Masakazu Shibahara, Toichi Fukasawa
Session ID: 117
Published: 2010
Released on J-STAGE: November 09, 2010
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TETSUYA AKIYAMA, HIRONORI ABE, TOSHIO TERASAKI
Session ID: 118
Published: 2010
Released on J-STAGE: November 09, 2010
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TETSUYA AKIYAMA, TOUKI SHINOHARA, TOSHIO TERASAKI
Session ID: 119
Published: 2010
Released on J-STAGE: November 09, 2010
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Toshio Terasaki, Tomohiro Morita, Takanori Kitamura, Masamitsu Abe
Session ID: 120
Published: 2010
Released on J-STAGE: November 09, 2010
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This paper deals with the welding deformations for the continuous welding,
the progressive welding and the backstep welding of deposition sequence by the experimental results.
And it is clarified the features of the welding deformations,
transvers shrinkage, angular distortion and longitudinal shrinkage.
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Akihiro Ikezaki, Jyunya Yamada, Kazuyoshi Nakamoto, Shigetaka Okano, M ...
Session ID: 121
Published: 2010
Released on J-STAGE: November 09, 2010
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Junya Yamada, Akihiro Ikezaki, Kazuyoshi Nakamoto, Shigetaka Okano, Ma ...
Session ID: 122
Published: 2010
Released on J-STAGE: November 09, 2010
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Kazuyoshi NAKAMOTO, Akihiro IKEZAKI, Junya YAMADA, Shigetaka OKANO, Ma ...
Session ID: 123
Published: 2010
Released on J-STAGE: November 09, 2010
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Tadafumi Hashimoto, Yusuke Osawa, Shinsuke Itoh, Masashi Kameyama, Shi ...
Session ID: 124
Published: 2010
Released on J-STAGE: November 09, 2010
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Although it is well known that X-ray residual stress measurement in weld of Ni based alloy is generally difficult, by the combination of two-dimensional detector and multi-axial rocking, the residual stress distribution obtained from the deformation of debye-ring. And then, it is confirmed that improvement effect by water jet peening was effective for the SCC in the weld.
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Tadafumi Hashimoto, Yusuke Osawa, Shinsuke Itoh, Masashi Kameyama, Shi ...
Session ID: 125
Published: 2010
Released on J-STAGE: November 09, 2010
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As the countermeasure against PWSCC, the water jet peening (WJP), which can change tensile stress into the compressive stress, has been applied to welded joints. The stability of the compressive stress induced by WJP has been examined by using ring type specimen processed by WJP.The result has shown that the compressive stress by the WJP on the tensile stressed specimen remains stable in the long term operation at 620K.
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SHINICHIRO NAKAMURA, HISASHI SERIZAWA, hiroyasu tanigawa, hidekazu mur ...
Session ID: 126
Published: 2010
Released on J-STAGE: November 09, 2010
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Based on our previous research, it was found that the tensile welding residual stress would be generated at the surface of cooling channel in Test Blanket Module of ITER. In this study, the influence of channel shape on the residual stress was studied by using the finite element method.
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Nobuyoshi Yanagida, Koichi Saito, Kazuo Ogawa
Session ID: 127
Published: 2010
Released on J-STAGE: November 09, 2010
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Residual stress evaluation of cladding for reactor pressure vessel (report 1)
Satoru Nishikawa, Ryoji Mizuno, Shigeru Okita, Kazuo Ogawa
Session ID: 128
Published: 2010
Released on J-STAGE: November 09, 2010
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In the present research, material properties of low alloy steel were investigated in consideration of transformation. Tensile properties and thermal expansion addition to thermal cycle during welding were measured on low alloy steel.
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-Residual stress evaluation of cladding for reactor pressure vessel (Report2)-
Ryoji Mizuno, Satoru Nishikawa, Kazuo Ogawa
Session ID: 129
Published: 2010
Released on J-STAGE: November 09, 2010
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Keisuke SOGABE, Yoshiki MIKAMI, Satoru NISHIKAWA, Masahito MOCHIZUKI
Session ID: 130
Published: 2010
Released on J-STAGE: November 09, 2010
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Keiji Nakacho, Akira Maekawa, Reiko Sato, Norifumi Kasahara
Session ID: 131
Published: 2010
Released on J-STAGE: November 09, 2010
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The welding residual stress of coolant pipe joint in nuclear plant is measured by inherent strain method.Final goal of this study is to obtain the three-dimensional distribution.In this study, the measurement is conducted at the location in quasi-stationary state.
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Application of Robust Estimation
Keiji Nakatyou, Yousuke Tanaka, Naoki Ogawa
Session ID: 132
Published: 2010
Released on J-STAGE: November 09, 2010
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The Welding residual stress of the pressure vessel of nuclear plant is measured by the inherent strain method. For the improvement of the accuracy of estimated residual stress,the measured strains are selected by applying the robust estimation.
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Jinya Katsuyama, Kunio Onizawa
Session ID: 133
Published: 2010
Released on J-STAGE: November 09, 2010
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Residual stress distributions at piping weld caused by repair welding were obtained from experiments and FE analyses. Repair welding at the outer surface caused increase of tensile stress at the inner surface. The change in residual stress was evaluated quantitatively by varying the groove depth and length of repair welding.
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Michiaki Fukuya, Toshio Terasaki, Takanori Kitamura
Session ID: 134
Published: 2010
Released on J-STAGE: November 09, 2010
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TOMONORI HORI, Masakazu Shibahara, Toichi Fukazawa
Session ID: 135
Published: 2010
Released on J-STAGE: November 09, 2010
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Masashi HATA, Shinsuke ITOH, Taketoshi SUGIHIRO, Atushi KAMIO, Yasuo Y ...
Session ID: 136
Published: 2010
Released on J-STAGE: November 09, 2010
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Shota Tsuboi, Kazuki Ikushima, Masakazu Shibahara, Toichi Fukasawa
Session ID: 137
Published: 2010
Released on J-STAGE: November 09, 2010
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kazuki ikushima, shinsuke itoh, masakazu shibahara, touichi hukasawa
Session ID: 138
Published: 2010
Released on J-STAGE: November 09, 2010
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Part 1.About the materials of die & mold for high temperature materials
keizou tanaka, hiroyuki sasahara, yasumasa katou
Session ID: 139
Published: 2010
Released on J-STAGE: November 09, 2010
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Authors are suggesting the method of three-dimensional structure fabrication by molten metal lamination. This is made it out of laminating welding bead by the NC controlled XYZ stage to trace the path of welding torch.
At this report, authors weighed the mechanical strength of heat proof metal materials for welding fabricated by molten metal lamination on the assumption that materials would be used for die & mold to use at a high temperature.
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Soshu Kirihara, Youhei Takinami, Yasunori Uehara, Satoko Tasaki
Session ID: 140
Published: 2010
Released on J-STAGE: November 09, 2010
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Yasunori Uehara, Soshu Kirihara
Session ID: 141
Published: 2010
Released on J-STAGE: November 09, 2010
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Shota Kikuchi, Hitomi Nishibata, Masato Uchihara, Manabu Fukumoto
Session ID: 142
Published: 2010
Released on J-STAGE: November 09, 2010
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The effect of shunt current on nugget formation is investigated through both CAE analysis and experiment to obtain a welding guideline for Single-sided RSW. It is shown that the effect of weld pitch on nugget formation in single-sided RSW is larger than that in direct RSW.
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Hitomi Nishibata, Shota Kikuchi, Manabu Fukumoto, Masato Uchihara
Session ID: 143
Published: 2010
Released on J-STAGE: November 09, 2010
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Influencing factor and way to reduce the shunt current through welded point nearby in single-sided RSW were investigated.
Reising resistance between weld point and welded nugget will one of the remedy to reduce shunt current
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Hiroki Fujimoto, Nobusato Kojima, Masahiko Hamada, Kiyoyuki Fukui
Session ID: 144
Published: 2010
Released on J-STAGE: November 09, 2010
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Effect of Al content of steel sheets on cross tension strength (CTS) of spot welds was examined. CTS was not affected by Al under a certain amount, but when Al exceeded this amount CTS dropped. Microstructure of Nugget changed from martensite to coarse ferrite at this Al amount.
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shoutarou ishimaru, yukitaka matumoto, genichirou murakami, chihiro iw ...
Session ID: 145
Published: 2010
Released on J-STAGE: November 09, 2010
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Comparison of mild steel with stainless steel
takahiro saba, jippei suzuki, hiroshi kawakami, hitoshi ozaki
Session ID: 146
Published: 2010
Released on J-STAGE: November 09, 2010
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The electric resistance value depends on the type and temperature of material, and current-carrying area in resistance spot welding. The current-carrying area depends on the electrode force and yield stress of material. In this study, mild steel and stainless steel were used to discuss about the difference of the electric resistance at an early in the spot welding.
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Koichi Taniguchi, Yasuaki Okita, Rinsei Ikeda, Shigeru Endo
Session ID: 147
Published: 2010
Released on J-STAGE: November 09, 2010
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We developed pulsed current pattern which repeated short pausing time and short welding time after main welding cycles in order to improve cross tensile strength of high strength steel sheets of 980MPa and 1180MPa grade. We clarified the effect of the pattern on improvement of cross tension strength and optimized the pattern condition.
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Seiji Sasabe, Yasuhiro Nagata
Session ID: 148
Published: 2010
Released on J-STAGE: November 09, 2010
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On the dissimilar joining combination of galvanealed steel sheet and aluminum alloy sheet, KOBE STEEL has already reported that the means of one more addition of steel on the outside of galvanealed steel had brought the good mechanical joint properties. This paper reports the intimate observations of the joining interface comparing with conventional combination without addition.
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Tomoya Niho, Tomoyoshi Horie, Souhei Takaki, Yusuke Morita
Session ID: 149
Published: 2010
Released on J-STAGE: November 09, 2010
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GEN MURAYAMA, HATSUHIKO OIKAWA
Session ID: 150
Published: 2010
Released on J-STAGE: November 09, 2010
CONFERENCE PROCEEDINGS
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