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Masahiro Toyosada

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Publication

Featured researches published by Masahiro Toyosada.

Journal of the Society of Naval Architects of Japan | 1987

WORKING LOAD ON SPECIMEN IN RAPID-FRACTURE TOUGHNESS TEST

Eisuke Fujii; Isamu Ohkuma; Masahiro Toyosada

In order to evaluate dynamic fracture toughness of structural steel, three point bending (3 PB-COD) or compact tension (CT) test is usually carried out by using drop weight or high tensile rate testing machine.Since, in static test, applied load to the specimen can easily measured exactly by load cell of test system, but in dynamic test it is difficult to get or decide working load on test specimen because the effect of acceleration affects on the output of load cell in test system.In this paper, the estimation of working load on test specimen was investigated applying a simple mass and spring model to the loading system of test equipment.

Journal of the Society of Naval Architects of Japan | 1987

The Effect of Strain Rate on Critical CTOD and J Integral

Masahiro Toyosada; Eisuke Fujii; Kazuhiro Nohara; Yoshiaki Kawaguchi; Kazushige Arimochi; Kazumi Isaka

Journal of the Society of Naval Architects of Japan | 1974

A Study of -Crack Propagation and Brittle Fracture in Plates with Penetrating Crack under Combined Stresses

Takeshi Kanazawa; Susumu Machida; Setuzi Minehisa; Akira Nagai; Masahiro Toyosada; Taro Okamoto; Kazuhiko Tanaka

Naval architecture and ocean engineering | 1980

Effect of Notch Acuity on Critical COD

Takeshi Kanazawa; Susumu Machida; Masahiro Toyosada; Shuzi Aihara

Journal of the Society of Naval Architects of Japan | 1986

The effect of specimen thickness and local embrittle zone on critical CTOD at HAZ of As-weld joint

Masahiro Toyosada; Yukito Hagiwara; Kazuhiro Nohara; Takao Otsuka

Journal of the Society of Naval Architects of Japan | 1985

Development of New Steel and Welding Procedure for Hull Structure of Ice Breaking Vessels (2 nd Report)

Yukihiro Imura; Masahiro Toyosada; Tatsuo Miyazaki; Noriyuki Kamoi; Hiroyuki Matsumura; Shuichi Muramatsu; Yukio Tomita; Yukihiko Horii; Yukito Hagiwara

Naval architecture and ocean engineering | 1984

DEVELOPMENT OF NEW STEEL AND WELDING PROCEDURE FOR HULL STRUCTURE OF ICE BREAKING VESSELS

Seiichiro Murata; Masahiro Toyosada; Tatsuo Miyazaki; Noriyuki Kamoi; Hiroyuki Matsumura; Shuichi Muramatsu; Yoshihiro Okamura; Yukihiko Horii; Yukito Hagiwara

Journal of the Society of Naval Architects of Japan | 1981

A Proposal of Fracture Control Design Procedure

Taiji Kataza; Seiichiro Murata; Masaru Tateishi; Masahiro Toyosada; Taro Okamoto; Hirohiko Fujiwara; Shigeru Miwa; Takeshi Kanazawa

日立造船技報 | 1984

Fracture Strength of Structural Elements with a Surface Flaw Locafed in Highly Concentrated Strain Field

Masahiro Toyosada; Susumu Fukui; Susumu Machida

Journal of the Society of Naval Architects of Japan | 1983

An Analysis of Fatigue Crack Propagation Characteristics Based on Crack Opening-Closure Phenomena (1st report)

Taro Okamoto; Masahiro Toyosada; Hirohiko Fujiwara; Hideki Hamada

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Susumu Machida

Chiba University

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Takeshi Kanazawa

University of Tokyo

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Hiroyuki Matsumura

Kawasaki Heavy Industries

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Yukito Hagiwara

Sophia University

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Kazumi Isaka

Sumitomo Metal Industries

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Kazushige Arimochi

Sumitomo Metal Industries

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Yoshiaki Kawaguchi

Japan Society for the Promotion of Science

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Masaru Tateishi

Hitachi

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Seiichiro Murata

Hitachi

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Taiji Kataza

Hitachi

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