A methodology for assessment and retrofitting by TIG dressing of existing pre-fatigued welded steel joints
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). This paper presents a framework for a fatigue assessment and retrofitting of welded structures by TIG dressing. The proposed framework provides in detail the parameters that have an influence on fatigue life which can be divided into two groups, the first is related to the structure prior to treatment such (e.g: crack dimension, toe radius, and residual stresses) while the second is related to the state of the structure following the treatment (e.g: treatment depth, residual stresses and resulted toe radius). Experimental results, from the current work, were complemented with tests from literature to verify the proposed framework. An analysis between our predictions and reported values of fatigue life from literature show an absolute error of 20%.


Asma Manai

Chalmers, Architecture and Civil Engineering, Structural Engineering

F. von Bock

Technical University of Hamburg (TUHH)


Technical University of Hamburg (TUHH)

Joakim Hedegård

Swerim AB

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

9780367232788 (ISBN)

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

LifeExt - Livslängdsförlängning för befintliga stålbroar

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

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

Subject Categories

Manufacturing, Surface and Joining Technology

Other Materials Engineering

Composite Science and Engineering



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