Preprints of the National Meeting of JWS

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Preprints of the National Meeting of JWS

Displaying 51-100 of 109 articles from this issue

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Countermeasure against fatigue crack growth by press fit stub

Masashi Mohri

Session ID: 311
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.130.0

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Influence of Welding Sequence on Inherent Strain and Welding Deformation Analysis

Satoshi Tadano, Yujiro Nakatani, Akira Tanaka

Session ID: 312
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.132.0

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The influences of fixture restraint and/or welding sequence have been difficult to be estimated by inherent strain analysis method based on strain database. In this study, a method for estimating variation of inherent strain distribution according to the welding sequence was proposed and welding deformation analyses was conducted with the method.

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Analysis of Welding Deformation of Thin Plate Structure Using Idealized Explicit FEM

TAKUMI SHIGEMASA, KAZUKI IKUSHIMA, Shinsuke ITOH, Masakazu SHIBAHARA

Session ID: 313
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.134.0

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Simulation of Welding Deformation for 1500MPa Grade Steel Pipe

Masahiro Ogawa, Hiroki Fujimoto

Session ID: 314
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.136.0

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Theoretical Prediction of Buckling in Thermal Manufacturing Process

Hidekazu Murakawa, Jiangchao Wang, Juan Blandon

Session ID: 315
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.138.0

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When the structures are thin, buckling may happen during welding and straightening processes. Since the buckling distortion reduces the quality of the products and cause delay in production schedule, it is desirable to prevent it based on theoretical prediction. The authors propose methods to predict buckling. These methods are developed based on the concept of inherent strain and eigenvalue analysis for buckling and vibration.

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Study on Tendon Force Producing Buckling Type Welding Distortion

Jiangchao Wang, Xianqing Yin, Ninshu Ma, Hidekazu Murakawa

Session ID: 316
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.140.0

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In welding, the longitudinal shrinkage and the buckling distortion are produced by tendon force. In this study, experiment of buckling distortion is conducted and a T-E-P FEM analysis considering large deformation is employed to investigate the mechanism of the buckling behavior. Methods to estimate the tendon force is presented finally.

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Optimization Computation of Welding Sequences and Constraint Conditions for Controlling Welding Deformation of Welded Structures

Isaku Chimura, Sunao Tokura, Ninshu Ma

Session ID: 317
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.142.0

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Measurement of Welding Deformation Using Digital Imaging Technique

KAZUKI IKUSHIMA, Shinsuke ITOH, Masakazu SHIBAHARA

Session ID: 318
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.144.0

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Study on Tolerance Design Considering Heuristic Methods Taken in Assembly

Eiji Morinaga, Keiichi Shiotani, Hidefumi Wakamatsu, Eiji Arai

Session ID: 319
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.146.0

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Study on Assembling and Carrying Strategy in Large Welded Structures

Relationship between Assembly Sequence and Shape/Dimension Accuracy

Hidefumi Wakamatsu, Eiji Morinaga, Masahito Mochizuki, Eiji Arai

Session ID: 320
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.148.0

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Proposal of New Production System for Line Heating

Shinsuke ITOH, DAISUKE HARUKI, KAZUKI IKUSHIMA, Masakazu SHIBAHARA

Session ID: 321
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.150.0

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Verification of Generality of FEM- Model for Laser-Arc Hybrid Welding

Masaki MURAKAMI, You-Chul KIM, Mikihito HIROHATA, Koutarou INOSE

Session ID: 322
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.152.0

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For simulating welding distortion and residual stress generated by laser-arc hybrid welding by thermal elastic-plastic analysis, the FEM-model treating the dual heat source separately was proposed. In this paper, the validity of the proposed model was verified.

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Material flow during TATSUMAKI friction stir welding

Yutaka Sato, Mironov Sergey, Hiroyuki Kokawa, SeungHwan Park, Satoshi ...

Session ID: 323
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.154.0

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A new high-speed friction stir welding using a single tool-rotating mechanism

SEUNG HWAN C. PARK, SATOSHI HIRANO, SHINICHI KAGA, MITSURU ONOSE, NORI ...

Session ID: 324
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.156.0

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Effect of tool material properties on wear of Co-based alloy tool during friction stir welding of steels

Masahiro Miyake, Yutaka Sato, Hiroyuki Kokawa, Yoshikazu Takaku, Toshi ...

Session ID: 325
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.158.0

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Fluid Dynamics Analysis of Material Flow in Friction Stir Welding of Aluminum

Takaaki SHIMIZU, Toshiaki YASUI, Masahiro FUKUMOTO

Session ID: 326
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.160.0

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Effect of Probe Shape on Material Flow during Friction Stirring Welding between Aluminum and Steel

Yoichiro Shimoda, Toshiaki Yasui, Masahiro Fukumoto

Session ID: 327
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.162.0

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Microstructure and mechanical properties of friction stir welded 11%Cr ferritic/martensitic steel

Yutaka Sato, Hiroyuki Kokawa, Yasuhide Yano, Yoshihiro Sekio

Session ID: 328
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.164.0

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Microstructure and mechanical properties of friction stir welded titanium alloy

Kenta KITAMURA, Yoshiaki MORISADA, Hidetoshi FUJII

Session ID: 329
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.166.0

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Effect of joining conditions on microstructure in stir zone for thick low carbon steel plate

Yoshiaki Morisada, Ryo Nishimoto, Tomoaki Miyazawa, Hidetoshi Fujii

Session ID: 330
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.168.0

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Phase Transformation Behavior during FSW of Alloy Steel

Takuya Miura, Rintaro Ueji, Saad Ahmed Khodir, Masayoshi Kamai, Hideto ...

Session ID: 331
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.170.0

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Microtructure evolution and mechanical properties of double-sided friction stir welded AZ31B Mg alloy

Juan Chen, Yufeng Sun, Yoshiaki Morisada, Hidetoshi Fujii, katsuyoshi ...

Session ID: 332
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.172.0

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AZ31 magnesium alloy was welded by double-sided friction stir welding (FSW) in this study. The different rotation directions of the upper tool were adopted during double-sided FSW. The results showed that different rotation directions generated different joint structures. After double-sided FSW, the effects of the different tool rotation direction and welding parameters on microstructure, especially microtexture, and mechanical properties were evaluated.

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Microstructural evolution and mechanical properties of friction stir welded AZX911 magnesium alloy

Li Zhou, Kazuhiro Nakata, Jinsun Liao

Session ID: 333
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.174.0

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Influences of Tool Geometry on Material Flow in Friction Stir Spot Welds

Akihiko Ikuta, Yuhuan Yin, Thomas H. North

Session ID: 334
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.176.0

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Influences of Tool Geometry on Mechanical Properties of Friction Stir Spot Welds

Akihiko Ikuta, Yuhuan Yin, Thomas H. North

Session ID: 335
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.178.0

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Production of ultra-fine grained microstructure in Ti-6Al-4V by friction stir processing

Sergey Minorov, Yoshito Nagahama, Yutaka Sato, Hiroyuki Kokawa, Seung ...

Session ID: 336
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.180.0

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Effects of Friction Stir Powder Process Conditions on Formation of Surface Hardened Layer

Koichi Imagawa, Yoshiaki Morisada, Hidetoshi Fujii

Session ID: 337
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.182.0

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Local crystallographic misorientations in carbon steel joints fabricated by friction welding

Rintaro Ueji, Taketoshi Ninomiya, Akira Mino

Session ID: 338
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.184.0

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This study clarified the microstructure in the carbon steel joints fabricated by friction welding. The large local crystallographic misorientation can be detected by EBSD and these are changed by the process parameter.

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Numerical Basic Analysis of Microstructural Deformation with Crystal Plasticity and Interface Element

HISASHI SERIZAWA, TSUYOSHI HAJIMA, SEIGO TOMIYAMA, HIDEKAZU MURAKAWA

Session ID: 401
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.190.0

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Fracture Characteristics of 6% Nickel Steel Plates and their Applicability to LNG Storage Tanks

YOICHI KAYAMORI, TAKEHIRO INOUE, RYUJI UEMORI, HITOSHI FURUYA, NAOKI S ...

Session ID: 402
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.192.0

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Factors for Controlling Tensile Strength of Overmatched Welded Joint of Stainless Steel for Building Structure

Mitsuru Ohata, Shotaro Ueno, Fumiyoshi Minami, Takashi Namekata, Shige ...

Session ID: 403
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.194.0

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FE-analytical studies demonstrate that the failure in the overmatched weld for the welded joint of Austenitic stainless steel SUS304A comes from the large difference in uniform elongation between the base metal and weld metal. The mechanical parameters to ensure a failure in a base metal for the overmatched joint are proposed.

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Fatigue Crack Propagation Behavior on Stress Field with Variation of Principal Stress Direction

takeshi mori, shigeyuki hirayama

Session ID: 404
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.196.0

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In order to verify the fatigue crack propagation behavior on the stress field with variation of principal stress direction, fatigue tests and fatigue crack propagation analyses have been performed. The results indicate that the fatigue crack propagates in the direction which inclines to right-angled directions of the crack from right-angled direction of the principal stress and the fatigue crack propagation behavior could be reproduced.

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Improvement of Cyclic Fatigue Property in Thin Sheet of Stainless Steel by Laser Irradiation

Hiroaki MORI, Shuang XU, Tetsusei KURASHIKI, Masanobu SAKAUE, Xingshen ...

Session ID: 405
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.198.0

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Development of Narrow Gap Hot-Wire Laser Welding Process for Heat-Resistant Steel Pipe for Boiler

Toshinari Okagaito, Hiroshi Watanabe, Kenji Shinozaki, Motomichi Yamam ...

Session ID: 406
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.200.0

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Development of Method of Ultra Low Strain Laser Welding of The Thin Sheet Structure by Temperature Field Control

The application experiment to Build H-Steel

ryohei takamatsu, masahito motizuki, michinori okubo, muneharu kutuna, ...

Session ID: 407
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.202.0

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Development of Method of Ultra Low Swerve Laser Welding of The Lamina Structure by Temperature Field Control Technology

- Numerical Study on the Reduction Effect of Thermal Strain by Temperature Field Control -

SHIGETAKA OKANO, AKIHIRO IKEZAKI, RYOUHEI TAKAMATSU, TOGO KAWAKAMI, MA ...

Session ID: 408
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.204.0

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Laser Hybrid Welding of Stainless Steel using a Single Mode Faiber Laser

Muneharu Kutsuna, Hiroki Inoue, Ryouhei Takamatu

Session ID: 409
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.206.0

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Attenuation coefficient of laser beam in laser induced plume

Fundamental Study of Remote Laser Welding -4

Yasunobu Miyazaki, Seiji Katayama

Session ID: 410
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.208.0

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Study of weldability of rectangle beam by Direct Diode Laser

Masatoshi TOKUNAGA, Masanori YASUYAMA, Kiyoyuki FUKUI

Session ID: 412
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.212.0

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In-Process Monitoring and Adaptive Control in Laser Direct Metal Deposition

Masanori Miyagi, Takeshi Tsukamoto, Hirotsugu Kawanaka

Session ID: 413
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.214.0

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In-situ temperature measurement using high-speed cameras during welding

shotaro yamashita, kenji shinozaki, motomichi yamamoto, kota kadoi, ak ...

Session ID: 414
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.216.0

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Laser direct joining of CFRP and stainless steel bolt

Hiroki Kimata, Eiji Miyoshi, Hideki Kataoka, Yousuke Okuno, Seiji Kata ...

Session ID: 415
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.218.0

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Laser direct joining of CFRP and metals

Kwang-Woon JUNG, Yousuke KAWAHITO, Seiji KATAYAMA

Session ID: 416
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.220.0

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Dissimilar joining of titanium alloy and aluminum alloy by laser brazing

Zhihua Song, Minhyo Shin, Kazuhiro Nakata, Aiping Wu, Jinsun Liao

Session ID: 417
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.222.0

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The laser brazing of Ti6Al4V and A6061 alloys with 2mm thickness was conducted by focusing laser beam on aluminum alloy side, and the effects of welding conditions including offset distance on the microstructures and mechanical properties of the dissimilar butt joints were investigated. It was found that the offset distance had a great influence on the thickness of intermetallic compound layer and the mechanical properties of the joint.

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First Report of Fundamental Research for Laser Welding Using Particle Method

Isaku Chimura, Yousuke Kawahito, Hidekazu Murakawa

Session ID: 418
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.224.0

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Resistance spot welding of boron steel (Report4)

-Welding process to increase the peel tensile strength of spot weld-

Toru Okada, Hideki Ueda, Masanori Yasuyama, Masato Uchihara, Kiyoyuki ...

Session ID: 419
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.226.0

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Development of Indirect Resistance Spot Welding Technology Applying In-Process Electrode Force Control (Report 2)

Muneo Matsushita, Rinsei Ikeda, Shigeru Endo

Session ID: 420
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.228.0

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For the indirect resistance spot welding with single side access of the welding electrode, the variable control process of electrode force and welding current during welding, reported previously, was studied upon the test pieces with existing welds. The promoting effect of nugget formation due to the developed process was verified even when shunting at the existing welds was large.

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Strength of arc-spot welded joints in high strength steel sheets (Report2)

Seiji Furusako, Shinji Kodama, Yasunobu Miyazaki

Session ID: 421
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.230.0

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Resistance spot welding of Mg alloy

chihiro iwamoto, shinobu satonaka, yoshihito kawamura, ryo yamauchi, m ...

Session ID: 422
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.232.0

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Mechanical properties of blind rivet joint in steel sheets (Report2)

Dependence of joint strength on distance between rivet center and flange edge

Tatsuya Sakiyama, Yasunobu Miyazaki

Session ID: 423
Published: 2012
Released on J-STAGE: June 20, 2012

DOIhttps://doi.org/10.14920/jwstaikai.2012s.0.234.0

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