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Keiji Hirai

Nishinippon Institute of Technology

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Publication

Featured researches published by Keiji Hirai.

Isij International | 2012

Delayed Fracture Using CSRT and Hydrogen Trapping Characteristics of V-bearing High-strength Steel

Yukito Hagihara; Takato Shobu; Noriyuki Hisamori; Hiroshi Suzuki; Kenichi Takai; Keiji Hirai

Corrosion Science | 2010

Evaluation of delayed fracture property of outdoor-exposed high strength AISI 4135 steels

Songjie Li; Eiji Akiyama; Nobuyoshi Uno; Keiji Hirai; Kaneaki Tsuzaki; Bo-Ping Zhang

Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 2011

Delayed Fracture Using CSRT Method and Hydrogen Trapping Characteristics of V-bearing High Strength Steel

Yukito Hagihara; Takato Shobu; Noriyuki Hisamori; Hiroshi Suzuki; Kenichi Takai; Keiji Hirai

Journal of Structural and Construction Engineering (transactions of Aij) | 2005

FATIGUE STRENGTH OF SUPER HIGH STRENGTH BOLT

Keiji Hirai; Nobuyoshi Uno

Archive | 2005

Bolt set made of steel

Nobuyoshi Uno; Mamoru Suzuki; Toshio Miyagawa; Kouzou Wakiyama; Keiji Hirai

Archive | 2013

Threaded reinforcing bar coupling for deformed reinforcing bar, and threaded deformed reinforcing bar

Kozo Wakiyama; Keiji Hirai; Akira Fukuda

Kou kouzou rombunshuu | 1998

Experimental Study on High Strength Bolted Friction Joints with Oversized and Slotted Holes

Atsuo Tanaka; Hiroshi Masuda; Kozo Wakiyama; Shizuo Tsujioka; Keiji Hirai; Eiji Tateyama

Journal of Structural and Construction Engineering (transactions of Aij) | 1997

EXPERIMENTAL STUDY ON HIGH STRENGTH BOLTED JOINTS TREATED WITH ZINC-RICH PAINT

Keiji Hirai; Akira Fukuda; Yoshiaki Horizono

Archive | 2012

Screw type reinforcement joint for deformed bar, and deformed bar with screw

廣三 ▲脇▼山; Kozo Wakiyama; Keiji Hirai; 敬二 平井; Akira Fukuda; 章 福田

Journal of Structural and Construction Engineering (transactions of Aij) | 2007

A STUDY ON HIGH STRENGTH BOLT WITH HIGH FATIGUE STRENGTH

Keiji Hirai; Kozo Wakiyama; Nobuyoshi Uno

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Kozo Wakiyama

Osaka University

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Hiroshi Suzuki

Nagoya University

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Kenichi Takai

Sophia University

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Noriyuki Hisamori

Sophia University

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Takato Shobu

Sophia University

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Yukito Hagihara

Sophia University

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Bo-Ping Zhang

Tohoku University

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Eiji Akiyama

Tohoku University

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Hiroshi Masuda

Utsunomiya University

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Ichiro Takeuchi

Panasonic

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