Verification of the repair effect for fatigue cracks in members of steel bridges based on thermoelastic stress measurement

被引：11

作者：

Sakagami, Takahide ^{[1
]}

Mizokami, Yoshiaki ^{[2
]}

Shiozawa, Daiki ^{[1
]}

Fujimoto, Taisei ^{[1
]}

Izumi, Yui ^{[3
]}

Hanai, Taku ^{[2
]}

Moriyama, Akira ^{[2
]}

机构：

[1] Kobe Univ, Dept Mech Engn, Nada Ku, 1-1 Rokkodai Cho, Kobe, Hyogo 6578501, Japan

[2] Honshu Shikoku Bridge Expressway Co Ltd, Chuo Ku, 4-1-22 Onoe Dori, Kobe, Hyogo 6510088, Japan

[3] Univ Shiga Prefecture, Dept Mech Syst Engn, 2500 Hassaka Cho, Hikone 5220057, Japan

来源：

ENGINEERING FRACTURE MECHANICS | 2017年 / 183卷

基金：

日本学术振兴会;

关键词：

Nondestructive evaluation; Thermoelasticity; Infrared thermography; Fatigue cracks; Steel bridges; INTENSITY FACTORS; INFRARED THERMOGRAPHY; DAMAGE;

D O I：

10.1016/j.engfracmech.2017.05.024

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Ageing steel bridges suffer fatigue cracks thereby necessitating immediate inspection, structural integrity evaluation or repair in the life cycle of steel bridges. We propose non-destructive evaluation techniques employing infrared thermography enabling us to remotely inspect the fatigue cracks in steel bridges and evaluate the structural integrity on the basis of thermoelastic stress measurement. This study presents a structural integrity assessment of steel bridges using remote measurement of the stress field around the fatigue cracks. We focus upon experimental results confirming reduction in the severity of the stress distribution around the fatigue cracks after the repair or reinforcement of members in steel bridges. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：1 / 12

页数：12

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