The effect of imperfections on crack growth rates in cold worked and interference fit holes
This work examines the effect of imperfections on fatigue crack growth (FCG) in lap joints (Hi-Lok fasteners). The Finite Element Method (FEM) is used to model the cold-working and interference fit processes. FE predictions are shown to be consistent with experimental and computational results in th...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Military Technical Institute, Belgrade
2019-01-01
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| Series: | Scientific Technical Review |
| Subjects: | |
| Online Access: | https://scindeks-clanci.ceon.rs/data/pdf/1820-0206/2019/1820-02061903035C.pdf |
| _version_ | 1828391989231484928 |
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| author | Coates Cameron Vakharia Ved |
| author_facet | Coates Cameron Vakharia Ved |
| author_sort | Coates Cameron |
| collection | DOAJ |
| description | This work examines the effect of imperfections on fatigue crack growth (FCG) in lap joints (Hi-Lok fasteners). The Finite Element Method (FEM) is used to model the cold-working and interference fit processes. FE predictions are shown to be consistent with experimental and computational results in the literature. The Extended Finite Element Method (XFEM) is then used to simulate a Mode I through crack in a rectangular plate starting at the fastener hole subjected to cold-working and interference fit. Four constant load ratio fatigue cases are investigated: (i) no residual stress, no imperfection, (ii) no residual stress, imperfection, (iii) residual stress, no imperfection and (iv) residual stress, imperfection. XFEM predictions used with the Walker equation predict that the presence of an axial gouge within a hole may result in a significant decrease (23%) in the component fatigue life under constant amplitude cyclical loading. This decrease appears to be exacerbated if a residual compressive stress field due to cold-work and interference fit is present. |
| first_indexed | 2024-12-10T07:12:17Z |
| format | Article |
| id | doaj.art-7c5bab15ebf04d3b968f48f3c2626f9d |
| institution | Directory Open Access Journal |
| issn | 1820-0206 2683-5770 |
| language | English |
| last_indexed | 2024-12-10T07:12:17Z |
| publishDate | 2019-01-01 |
| publisher | Military Technical Institute, Belgrade |
| record_format | Article |
| series | Scientific Technical Review |
| spelling | doaj.art-7c5bab15ebf04d3b968f48f3c2626f9d2022-12-22T01:58:01ZengMilitary Technical Institute, BelgradeScientific Technical Review1820-02062683-57702019-01-0169335401820-02061903035CThe effect of imperfections on crack growth rates in cold worked and interference fit holesCoates Cameron0Vakharia Ved1Kennesaw State University, Southern Polytechnic College of Engineering and Engineering Technology, Marietta, GeorgiaUniversity of California, Materials Science and Engineering Program, San Diego, CaliforniaThis work examines the effect of imperfections on fatigue crack growth (FCG) in lap joints (Hi-Lok fasteners). The Finite Element Method (FEM) is used to model the cold-working and interference fit processes. FE predictions are shown to be consistent with experimental and computational results in the literature. The Extended Finite Element Method (XFEM) is then used to simulate a Mode I through crack in a rectangular plate starting at the fastener hole subjected to cold-working and interference fit. Four constant load ratio fatigue cases are investigated: (i) no residual stress, no imperfection, (ii) no residual stress, imperfection, (iii) residual stress, no imperfection and (iv) residual stress, imperfection. XFEM predictions used with the Walker equation predict that the presence of an axial gouge within a hole may result in a significant decrease (23%) in the component fatigue life under constant amplitude cyclical loading. This decrease appears to be exacerbated if a residual compressive stress field due to cold-work and interference fit is present.https://scindeks-clanci.ceon.rs/data/pdf/1820-0206/2019/1820-02061903035C.pdffatiguecrackfastenercold workinterferencefinite element |
| spellingShingle | Coates Cameron Vakharia Ved The effect of imperfections on crack growth rates in cold worked and interference fit holes Scientific Technical Review fatigue crack fastener cold work interference finite element |
| title | The effect of imperfections on crack growth rates in cold worked and interference fit holes |
| title_full | The effect of imperfections on crack growth rates in cold worked and interference fit holes |
| title_fullStr | The effect of imperfections on crack growth rates in cold worked and interference fit holes |
| title_full_unstemmed | The effect of imperfections on crack growth rates in cold worked and interference fit holes |
| title_short | The effect of imperfections on crack growth rates in cold worked and interference fit holes |
| title_sort | effect of imperfections on crack growth rates in cold worked and interference fit holes |
| topic | fatigue crack fastener cold work interference finite element |
| url | https://scindeks-clanci.ceon.rs/data/pdf/1820-0206/2019/1820-02061903035C.pdf |
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