A literature review of pre-fatigued structures treated by TIG dressing
Paper i 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.

Författare

Asma Manai

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

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

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

LifeExt - Livslängdsförlängning för befintliga stålbroar

Trafikverket (TRV 2018/27547), 2018-05-15 -- 2020-11-30.

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

Ämneskategorier

Bearbetnings-, yt- och fogningsteknik

Annan materialteknik

Metallurgi och metalliska material

DOI

10.1201/9780429279119-429

Mer information

Senast uppdaterat

2021-11-04