Comments on A case study on engineering failure analysis of link chain
The article by Tae-Gu Kim et al. conducted elastic FE modeling, which was inappropriate for fracture of elastic-plastic chain material (11.3% of elongation). FE analysis results and the findings in the fractographic analysis did not tally but contradicted each other. The article identified “incorrec...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-12-01
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| Series: | Safety and Health at Work |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2093791121000378 |
| _version_ | 1797719387795357696 |
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| author | George Y.H. Yu |
| author_facet | George Y.H. Yu |
| author_sort | George Y.H. Yu |
| collection | DOAJ |
| description | The article by Tae-Gu Kim et al. conducted elastic FE modeling, which was inappropriate for fracture of elastic-plastic chain material (11.3% of elongation). FE analysis results and the findings in the fractographic analysis did not tally but contradicted each other. The article identified “incorrect installation”/ bending forces as the root cause while FE results of the chain under bending forces showed very low stresses at fracture locations but the highest stress in the middle of shank of the chain. The article's “step-like topographies indicating the fracture due to bending moment rather than uniaxial tension” lacked scientific support. The load value carried by each chain section under bending/incorrect installation was only half of that under tension, thus the article using same load value in FE simulation comparison for bending and tension was incorrect. The real cause of the chain fracture was likely improper checking the lifted load or/and using the wrong chain with much lower safety working load. |
| first_indexed | 2024-03-12T09:04:08Z |
| format | Article |
| id | doaj.art-cb19b296fa0f454db182b7acb4ab1f8d |
| institution | Directory Open Access Journal |
| issn | 2093-7911 |
| language | English |
| last_indexed | 2024-03-12T09:04:08Z |
| publishDate | 2021-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Safety and Health at Work |
| spelling | doaj.art-cb19b296fa0f454db182b7acb4ab1f8d2023-09-02T15:28:32ZengElsevierSafety and Health at Work2093-79112021-12-01124544545Comments on A case study on engineering failure analysis of link chainGeorge Y.H. Yu0Department of Forensic Engineering, Universal Technology Centre, SingaporeThe article by Tae-Gu Kim et al. conducted elastic FE modeling, which was inappropriate for fracture of elastic-plastic chain material (11.3% of elongation). FE analysis results and the findings in the fractographic analysis did not tally but contradicted each other. The article identified “incorrect installation”/ bending forces as the root cause while FE results of the chain under bending forces showed very low stresses at fracture locations but the highest stress in the middle of shank of the chain. The article's “step-like topographies indicating the fracture due to bending moment rather than uniaxial tension” lacked scientific support. The load value carried by each chain section under bending/incorrect installation was only half of that under tension, thus the article using same load value in FE simulation comparison for bending and tension was incorrect. The real cause of the chain fracture was likely improper checking the lifted load or/and using the wrong chain with much lower safety working load.http://www.sciencedirect.com/science/article/pii/S2093791121000378Chain fractureFailure analysisFEM simulationFractographicanalysisIndustrial accident |
| spellingShingle | George Y.H. Yu Comments on A case study on engineering failure analysis of link chain Safety and Health at Work Chain fracture Failure analysis FEM simulation Fractographicanalysis Industrial accident |
| title | Comments on A case study on engineering failure analysis of link chain |
| title_full | Comments on A case study on engineering failure analysis of link chain |
| title_fullStr | Comments on A case study on engineering failure analysis of link chain |
| title_full_unstemmed | Comments on A case study on engineering failure analysis of link chain |
| title_short | Comments on A case study on engineering failure analysis of link chain |
| title_sort | comments on a case study on engineering failure analysis of link chain |
| topic | Chain fracture Failure analysis FEM simulation Fractographicanalysis Industrial accident |
| url | http://www.sciencedirect.com/science/article/pii/S2093791121000378 |
| work_keys_str_mv | AT georgeyhyu commentsonacasestudyonengineeringfailureanalysisoflinkchain |