University of Illinois at Urbana-Champaign
A Fatigue Life Prediction Method for Tensile-Shear Spot Welds
Abstract
dc:descriptionAn empirical Three Stage Initiation-Propagation (TSIP) model has been developed which predicts the fatigue resistance of tensile-shear spot welds under constant amplitude loading test. The TSIP model consists of Stage I--fatigue crack initiation and early growth, Stage II--through sheet thickness crack propagation, and Stage III--across sheet width crack propagation. The improvements of tensile-shear spot weld fatigue resistance through manipulation of geometry, residual stress and material property variables are discussed with the aid of the model. The TSIP model suggests that, in addition to the influence of geometry, residual stresses at the site of crack initiation greatly influence the fatigue resistance of tensile-shear spot welds. The TSIP model predicts the subtle role of material properties in determing the fatigue resistance of tensile-shear spot welds.
Degree
thesis:*- Name thesis:degree_name
- Ph.D.
- Level thesis:degree_level
- Dissertation
- Discipline thesis:degree_discipline
- Metallurgical Engineering
- Grantor
- University of Illinois at Urbana-Champaign
- Year dc:date
- 2014
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Wang, Pei-Chung
Subjects
dc:subject × 1Identifiers
dc:identifier.*- Identifier
- (UMI)AAI8502336
- OAI identifier oai:identifier
- oai:www.ideals.illinois.edu:2142/71814