A literature review of pre-fatigued structures treated by TIG dressing
Paper in proceeding, 2021

Several fatigue life extension methods of a welded structure are coveted in the industry such as Tungsten-Inert-Gas dressing (TIG dressing). In this paper, experimental results from literature studies of pre-fatigued welded steel structures treated by TIG dressing were analyzed and showed that TIG dressing efficiency is dependent on the depth of the crack before treatment and the treatment penetration depth (aTIG). A recommendation on the extended fatigue life involves the initial crack size (before treatment) as well as the remaining crack after treatment is provided. Based on this study, the improved fatigue life is found to be at least the as-welded fatigue life when the cracks have completely re-melted (recalibrated). A significant dependency of extended fatigue life on the remaining crack depth after treatment has been found.

Author

Asma Manai

Chalmers, Architecture and Civil Engineering, Structural Engineering

Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations - Proceedings of the 10th International Conference on Bridge Maintenaince, Safety and Management, IABMAS 2020

3159-3164
9780367232788 (ISBN)

10th International Conference on Bridge Maintenaince, Safety and Management, IABMAS 2020
Sapporo, Japan,

LifeExt - Livslängdsförlängning för befintliga stålbroar

Swedish Transport Administration (TRV 2018/27547), 2018-05-15 -- 2020-11-30.

VINNOVA (2017-02670), 2017-06-08 -- 2019-12-31.

Subject Categories

Manufacturing, Surface and Joining Technology

Other Materials Engineering

Metallurgy and Metallic Materials

DOI

10.1201/9780429279119-429

More information

Latest update

11/4/2021