Further Development of the Total Fatigue Life Model for Weldments and Its Application to Fatigue Design
Yung, Jong-Yeong
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https://hdl.handle.net/2142/71824
Description
Title
Further Development of the Total Fatigue Life Model for Weldments and Its Application to Fatigue Design
Author(s)
Yung, Jong-Yeong
Issue Date
1985
Department of Study
Metallurgy and Mining Engineering
Discipline
Metallurgical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Mining
Abstract
Cruciform joints were fatigue tested under SAE Bracket variable loading history. Tube-to-plate welds were fatigue tested under bending and torsion loading conditions. Fatigue test results were compared with predictions made using the total fatigue life model which predicts the total fatigue life of weldments by combining estimates of fatigue crack initiation life and fatigue crack propagation life. The comparisons of the total fatigue life model and other prediction models were also made.
The total fatigue life model was used to predict the effect of plate thickness on the fatigue strength of weldments. Nomographs for the fatigue design of weldments were constructed using the total fatigue life model.
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