The Effect of Tool Geometry for Resistance Spot Welds on Crack Growthin Specimens of Mild Steel
A mechanism of crack growth was investigated in resistance spot welds of mild steel. The experiments in this study were designed to investigate the effects of the electrode cap geometrieson fatigue life of the resistance spot weld specimens. Two types of electrode cap geometries were used. These typ...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2013-08-01
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| Series: | Engineering and Technology Journal |
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| Online Access: | https://etj.uotechnology.edu.iq/article_82581_456a7cf49a43225ad550af7d7a5f341e.pdf |
| _version_ | 1797325598772690944 |
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| author | Nadhim M.Faleh |
| author_facet | Nadhim M.Faleh |
| author_sort | Nadhim M.Faleh |
| collection | DOAJ |
| description | A mechanism of crack growth was investigated in resistance spot welds of mild steel. The experiments in this study were designed to investigate the effects of the electrode cap geometrieson fatigue life of the resistance spot weld specimens. Two types of electrode cap geometries were used. These types are 4.8 mm and 6.3 mm nose,used with the same shank in welding operations of 2mm mild steel plate. To obtain the goal, operating factors were precisely controlled, especially the electrode force and welding current of spot welds, to keep the same operating conditions while changingthe electrode geometries. The life test results showed an improvement in the fatigue life of resistance spot welds. The increment was 30% in heavy loads and 10% in low loads based on tool geometry. The improvement in the fatigue life was produced by reducing the diameter of the nose in the geometry of the tool. |
| first_indexed | 2024-03-08T06:11:42Z |
| format | Article |
| id | doaj.art-ac05673a9ab5434d9b1fb06b354ca020 |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T06:11:42Z |
| publishDate | 2013-08-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-ac05673a9ab5434d9b1fb06b354ca0202024-02-04T17:36:09ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582013-08-0131122242225010.30684/etj.31.12A.382581The Effect of Tool Geometry for Resistance Spot Welds on Crack Growthin Specimens of Mild SteelNadhim M.FalehA mechanism of crack growth was investigated in resistance spot welds of mild steel. The experiments in this study were designed to investigate the effects of the electrode cap geometrieson fatigue life of the resistance spot weld specimens. Two types of electrode cap geometries were used. These types are 4.8 mm and 6.3 mm nose,used with the same shank in welding operations of 2mm mild steel plate. To obtain the goal, operating factors were precisely controlled, especially the electrode force and welding current of spot welds, to keep the same operating conditions while changingthe electrode geometries. The life test results showed an improvement in the fatigue life of resistance spot welds. The increment was 30% in heavy loads and 10% in low loads based on tool geometry. The improvement in the fatigue life was produced by reducing the diameter of the nose in the geometry of the tool.https://etj.uotechnology.edu.iq/article_82581_456a7cf49a43225ad550af7d7a5f341e.pdfsistance spot weldingfatiguecrack propagationmild steel |
| spellingShingle | Nadhim M.Faleh The Effect of Tool Geometry for Resistance Spot Welds on Crack Growthin Specimens of Mild Steel Engineering and Technology Journal sistance spot welding fatigue crack propagation mild steel |
| title | The Effect of Tool Geometry for Resistance Spot Welds on Crack Growthin Specimens of Mild Steel |
| title_full | The Effect of Tool Geometry for Resistance Spot Welds on Crack Growthin Specimens of Mild Steel |
| title_fullStr | The Effect of Tool Geometry for Resistance Spot Welds on Crack Growthin Specimens of Mild Steel |
| title_full_unstemmed | The Effect of Tool Geometry for Resistance Spot Welds on Crack Growthin Specimens of Mild Steel |
| title_short | The Effect of Tool Geometry for Resistance Spot Welds on Crack Growthin Specimens of Mild Steel |
| title_sort | effect of tool geometry for resistance spot welds on crack growthin specimens of mild steel |
| topic | sistance spot welding fatigue crack propagation mild steel |
| url | https://etj.uotechnology.edu.iq/article_82581_456a7cf49a43225ad550af7d7a5f341e.pdf |
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