Effect of Elevated Temperature on Bending Fatigue Behavior for Neat and Reinforced Polyamide 6,6
Recently, considering polymer composite in manufacturing of mechanical parts can be caused a fatigue failure due to the very long time of exposure to cyclic loading and may at environmental temperatures higher than their glass transition temperature; therefore, in this paper, a comprehensive investi...
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| Format: | Article |
| Language: | English |
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Al-Nahrain Journal for Engineering Sciences
2020-11-01
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| Series: | مجلة النهرين للعلوم الهندسية |
| Subjects: | |
| Online Access: | https://nahje.com/index.php/main/article/view/796 |
| _version_ | 1828976507370864640 |
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| author | Orhan Sabah Abdullah Shaker S. Hassan Ahmed N. Al-khazraji |
| author_facet | Orhan Sabah Abdullah Shaker S. Hassan Ahmed N. Al-khazraji |
| author_sort | Orhan Sabah Abdullah |
| collection | DOAJ |
| description | Recently, considering polymer composite in manufacturing of mechanical parts can be caused a fatigue failure due to the very long time of exposure to cyclic loading and may at environmental temperatures higher than their glass transition temperature; therefore, in this paper, a comprehensive investigation for bending fatigue behavior at room and elevated temperatures equal to 60 °C, 70°C, and 80 °C will be done. Rotating bending test machine was manufactured for this purpose supplied with a connected furnace to perform fatigue tests at elevated temperatures. The obtained results appeared that the increase in applied stress and temperature caused a clear reduction in fatigue life; also the addition of carbon nanotubes enhanced the fatigue life at different temperatures by 183%, 205%, 218%, and 240%, respectively while the addition of short carbon fibers improved fatigue life by 324%, 351%, 387%, and 415%, respectively. As well as, Polyamide 6,6/carbon fiber composite appeared fatigue limit at temperatures equal to 20°C and 60°C and stresses approximately equal to 55 MPa and 38 MPa respectively. |
| first_indexed | 2024-12-14T14:39:54Z |
| format | Article |
| id | doaj.art-dc3624c3eddb4b2b9f5e1d537c880ffb |
| institution | Directory Open Access Journal |
| issn | 2521-9154 2521-9162 |
| language | English |
| last_indexed | 2024-12-14T14:39:54Z |
| publishDate | 2020-11-01 |
| publisher | Al-Nahrain Journal for Engineering Sciences |
| record_format | Article |
| series | مجلة النهرين للعلوم الهندسية |
| spelling | doaj.art-dc3624c3eddb4b2b9f5e1d537c880ffb2022-12-21T22:57:28ZengAl-Nahrain Journal for Engineering Sciencesمجلة النهرين للعلوم الهندسية2521-91542521-91622020-11-0123323223710.29194/NJES.23030232796Effect of Elevated Temperature on Bending Fatigue Behavior for Neat and Reinforced Polyamide 6,6Orhan Sabah Abdullah0Shaker S. Hassan1Ahmed N. Al-khazraji2Mechanical Engineering department/ University of TechnologyMechanical Engineering Dept., University of Technology, Baghdad-Iraq.Mechanical Engineering Dept., University of Technology, Baghdad, Iraq.Recently, considering polymer composite in manufacturing of mechanical parts can be caused a fatigue failure due to the very long time of exposure to cyclic loading and may at environmental temperatures higher than their glass transition temperature; therefore, in this paper, a comprehensive investigation for bending fatigue behavior at room and elevated temperatures equal to 60 °C, 70°C, and 80 °C will be done. Rotating bending test machine was manufactured for this purpose supplied with a connected furnace to perform fatigue tests at elevated temperatures. The obtained results appeared that the increase in applied stress and temperature caused a clear reduction in fatigue life; also the addition of carbon nanotubes enhanced the fatigue life at different temperatures by 183%, 205%, 218%, and 240%, respectively while the addition of short carbon fibers improved fatigue life by 324%, 351%, 387%, and 415%, respectively. As well as, Polyamide 6,6/carbon fiber composite appeared fatigue limit at temperatures equal to 20°C and 60°C and stresses approximately equal to 55 MPa and 38 MPa respectively.https://nahje.com/index.php/main/article/view/796cntshigh cycle fatiguepolyamide 6,6short carbon fibers |
| spellingShingle | Orhan Sabah Abdullah Shaker S. Hassan Ahmed N. Al-khazraji Effect of Elevated Temperature on Bending Fatigue Behavior for Neat and Reinforced Polyamide 6,6 مجلة النهرين للعلوم الهندسية cnts high cycle fatigue polyamide 6,6 short carbon fibers |
| title | Effect of Elevated Temperature on Bending Fatigue Behavior for Neat and Reinforced Polyamide 6,6 |
| title_full | Effect of Elevated Temperature on Bending Fatigue Behavior for Neat and Reinforced Polyamide 6,6 |
| title_fullStr | Effect of Elevated Temperature on Bending Fatigue Behavior for Neat and Reinforced Polyamide 6,6 |
| title_full_unstemmed | Effect of Elevated Temperature on Bending Fatigue Behavior for Neat and Reinforced Polyamide 6,6 |
| title_short | Effect of Elevated Temperature on Bending Fatigue Behavior for Neat and Reinforced Polyamide 6,6 |
| title_sort | effect of elevated temperature on bending fatigue behavior for neat and reinforced polyamide 6 6 |
| topic | cnts high cycle fatigue polyamide 6,6 short carbon fibers |
| url | https://nahje.com/index.php/main/article/view/796 |
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