The Analysis of Light-duty Truck Diesel Engine Crankshaft Failure
In this study, crankshaft failure of four-cylinder light-duty truck diesel engine was examined. The failure occurred by fatigue crack growth which was initiated from a surface defect after about 95000 km on the second crankpin from the crankpin-web fillet where the stress concentration was at the hi...
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| Format: | Article |
| Language: | English |
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Bu-Ali Sina University
2018-03-01
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| Series: | Journal of Stress Analysis |
| Subjects: | |
| Online Access: | https://jrstan.basu.ac.ir/article_2224_32ac1d376a2a4de2a92cfd5ced2bb7f1.pdf |
| _version_ | 1819038447338258432 |
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| author | K. Aliakbari |
| author_facet | K. Aliakbari |
| author_sort | K. Aliakbari |
| collection | DOAJ |
| description | In this study, crankshaft failure of four-cylinder light-duty truck diesel engine was examined. The failure occurred by fatigue crack growth which was initiated from a surface defect after about 95000 km on the second crankpin from the crankpin-web fillet where the stress concentration was at the highest level. To evaluate the mechanical properties, some hardness and tensile tests were conducted and spectrometry analysis was used for studying the chemical composition of the crankshaft material. Additionally, for considering and evaluating the microstructure, microcracks, fracture surface, and the cause of failure, optical microscopy (OM) and scanning electron microscopy (SEM) equipped with energy dispersive spectrometry (EDS) were used. The morphology of the fracture surface showed a smooth and flat crack initiation with the beach marks and ratchet marks and second crack propagation zone with beach marks and fast final fracture zone near the end. The results of EDS observations indicated that inclusions of non-metallic aren’t distributed throughout on the steel and in some places leads to the formation of the microcrack clusters. |
| first_indexed | 2024-12-21T08:37:27Z |
| format | Article |
| id | doaj.art-89bfd24a05c34fd38c623c4a34ac8de3 |
| institution | Directory Open Access Journal |
| issn | 2588-2597 2588-3054 |
| language | English |
| last_indexed | 2024-12-21T08:37:27Z |
| publishDate | 2018-03-01 |
| publisher | Bu-Ali Sina University |
| record_format | Article |
| series | Journal of Stress Analysis |
| spelling | doaj.art-89bfd24a05c34fd38c623c4a34ac8de32022-12-21T19:10:01ZengBu-Ali Sina UniversityJournal of Stress Analysis2588-25972588-30542018-03-0122111710.22084/jrstan.2018.15187.10352224The Analysis of Light-duty Truck Diesel Engine Crankshaft FailureK. Aliakbari0Mechanical Engineering Department, Faculty of Montazeri, Khorasan Razavi Branch, Technical and Vocational University (TVU), Mashhad, Iran.In this study, crankshaft failure of four-cylinder light-duty truck diesel engine was examined. The failure occurred by fatigue crack growth which was initiated from a surface defect after about 95000 km on the second crankpin from the crankpin-web fillet where the stress concentration was at the highest level. To evaluate the mechanical properties, some hardness and tensile tests were conducted and spectrometry analysis was used for studying the chemical composition of the crankshaft material. Additionally, for considering and evaluating the microstructure, microcracks, fracture surface, and the cause of failure, optical microscopy (OM) and scanning electron microscopy (SEM) equipped with energy dispersive spectrometry (EDS) were used. The morphology of the fracture surface showed a smooth and flat crack initiation with the beach marks and ratchet marks and second crack propagation zone with beach marks and fast final fracture zone near the end. The results of EDS observations indicated that inclusions of non-metallic aren’t distributed throughout on the steel and in some places leads to the formation of the microcrack clusters.https://jrstan.basu.ac.ir/article_2224_32ac1d376a2a4de2a92cfd5ced2bb7f1.pdfLight-duty truckCrankshaft failureMicrostructureNon-metallic inclusions |
| spellingShingle | K. Aliakbari The Analysis of Light-duty Truck Diesel Engine Crankshaft Failure Journal of Stress Analysis Light-duty truck Crankshaft failure Microstructure Non-metallic inclusions |
| title | The Analysis of Light-duty Truck Diesel Engine Crankshaft Failure |
| title_full | The Analysis of Light-duty Truck Diesel Engine Crankshaft Failure |
| title_fullStr | The Analysis of Light-duty Truck Diesel Engine Crankshaft Failure |
| title_full_unstemmed | The Analysis of Light-duty Truck Diesel Engine Crankshaft Failure |
| title_short | The Analysis of Light-duty Truck Diesel Engine Crankshaft Failure |
| title_sort | analysis of light duty truck diesel engine crankshaft failure |
| topic | Light-duty truck Crankshaft failure Microstructure Non-metallic inclusions |
| url | https://jrstan.basu.ac.ir/article_2224_32ac1d376a2a4de2a92cfd5ced2bb7f1.pdf |
| work_keys_str_mv | AT kaliakbari theanalysisoflightdutytruckdieselenginecrankshaftfailure AT kaliakbari analysisoflightdutytruckdieselenginecrankshaftfailure |