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Case studies in engineering failure analysis最新文献

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WITHDRAWN: Failure cause analysis of deaerator/sourgas stripper cylinder of ammonia unit in a chemical fertilizer plant 撤回:某化肥厂氨装置除氧器/合成气提汽筒失效原因分析
Case studies in engineering failure analysis Pub Date : 2014-06-17 DOI: 10.1016/J.CSEFA.2014.06.002
Cheng Lang, Yupeng Xie, Xiande Wang, Xi Gai, Dianwei Chen, Guangxi Jin
{"title":"WITHDRAWN: Failure cause analysis of deaerator/sourgas stripper cylinder of ammonia unit in a chemical fertilizer plant","authors":"Cheng Lang, Yupeng Xie, Xiande Wang, Xi Gai, Dianwei Chen, Guangxi Jin","doi":"10.1016/J.CSEFA.2014.06.002","DOIUrl":"https://doi.org/10.1016/J.CSEFA.2014.06.002","url":null,"abstract":"","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2014-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/J.CSEFA.2014.06.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54176678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of abnormal fatigue failure of forklift forks 叉车叉异常疲劳失效分析
Case studies in engineering failure analysis Pub Date : 2014-04-01 DOI: 10.1016/j.csefa.2013.12.005
George Pantazopoulos, Athanasios Vazdirvanidis, Andreas Rikos, Anagnostis Toulfatzis
{"title":"Analysis of abnormal fatigue failure of forklift forks","authors":"George Pantazopoulos,&nbsp;Athanasios Vazdirvanidis,&nbsp;Andreas Rikos,&nbsp;Anagnostis Toulfatzis","doi":"10.1016/j.csefa.2013.12.005","DOIUrl":"10.1016/j.csefa.2013.12.005","url":null,"abstract":"<div><p>The analysis of an abnormal failure of forklift forks is presented in this work. The investigation results suggested that failure occurred due to fatigue mechanism followed by sudden overload fracture. The orientation of fatigue fracture indicates abnormal lifting operation, favouring crack initiation from outer fork area which is the compression designed zone. Moreover, various surface flaws and weakness areas (such as surface marks, decarburized microstructures and weld zones) identified on the outer fork zone, compromise fatigue strength inducing premature crack nucleation and fast growth towards final failure.</p></div>","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"2 1","pages":"Pages 9-14"},"PeriodicalIF":0.0,"publicationDate":"2014-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csefa.2013.12.005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54176555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
Failure analysis of a bridge crane shaft 某桥式起重机轴的失效分析
Case studies in engineering failure analysis Pub Date : 2014-04-01 DOI: 10.1016/j.csefa.2013.12.002
O.A. Zambrano, J.J. Coronado, S.A. Rodríguez
{"title":"Failure analysis of a bridge crane shaft","authors":"O.A. Zambrano,&nbsp;J.J. Coronado,&nbsp;S.A. Rodríguez","doi":"10.1016/j.csefa.2013.12.002","DOIUrl":"10.1016/j.csefa.2013.12.002","url":null,"abstract":"<div><p>Failure analysis of a shaft used in a bridge crane has been carried out. The shaft fractured in the keyway with evidence of fatigue. Chemical analysis, micro-structural characterization, fractography, hardness measurements, and finite element simulation were used for the analysis. The microstructure was predominantly tempered martensite; large amounts of oxides, micropores, and manganese sulfide inclusions were found. The geometry of the keyway also promoted the initiation crack because the width and height were erroneously designed. It was concluded that all these factors produced fatigue failure. It is recommended to first guarantee the chemical composition and microstructure of the material. Secondly, use magnesium or calcium additions in the steel casting process to obtain better shape control of inclusions and, finally, accomplish the geometric parameters recommended by the standard to avoid high stress concentration factors.</p></div>","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"2 1","pages":"Pages 25-32"},"PeriodicalIF":0.0,"publicationDate":"2014-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csefa.2013.12.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54176522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 30
Investigation on brittle fracture mechanism of a grade E cast steel knuckle E级铸钢关节脆性断裂机理研究
Case studies in engineering failure analysis Pub Date : 2014-04-01 DOI: 10.1016/j.csefa.2013.12.007
Jin Huang, Lu Xia, Youshou Zhang, Sinian Li
{"title":"Investigation on brittle fracture mechanism of a grade E cast steel knuckle","authors":"Jin Huang,&nbsp;Lu Xia,&nbsp;Youshou Zhang,&nbsp;Sinian Li","doi":"10.1016/j.csefa.2013.12.007","DOIUrl":"10.1016/j.csefa.2013.12.007","url":null,"abstract":"<div><p>This paper investigated the brittle fracture mechanism of a grade E cast steel knuckle that is one of the key components of the coupler for railway wagon by using scanning electronic microscope, optical microscope, energy dispersive spectroscopy as well as mechanical property testing methods. It is found that large amounts of developed coarse dendrites and shrinkage porosity existed in the knuckle's microstructure, the plasticity and impact toughness of the knuckle entity are very bad and far below that of the Keel block represented this knuckle. Apparently, the shrinkage porosity resulted in the knuckle unsound metallic matrix and poor mechanical properties. The fracture morphology mainly shows the characteristic of cleavage, quasi-cleavage fracture as well as a little ductile fracture, so the failure of the knuckle can be attributed to brittle fracture distinctly. Moreover, a welding repair area with high hardness is also found in the fracture region, which might initiate micro-cracks on the surface of the knuckle. As a result, it can be inferred that under an impact load that did not exceed material fracture limit, the micro-cracks initiated from weld repair zone propagated rapidly into the inner matrix by continuously fracturing the dendrites along shrinkage porosity regions until the knuckle failed instantly.</p></div>","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"2 1","pages":"Pages 15-24"},"PeriodicalIF":0.0,"publicationDate":"2014-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csefa.2013.12.007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54176573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Fractography of a neck failure in a double-modular hip implant 双模髋关节植入物颈部失效的断口分析
Case studies in engineering failure analysis Pub Date : 2014-04-01 DOI: 10.1016/j.csefa.2014.03.001
Jason J. Williams, Nikhilesh Chawla
{"title":"Fractography of a neck failure in a double-modular hip implant","authors":"Jason J. Williams,&nbsp;Nikhilesh Chawla","doi":"10.1016/j.csefa.2014.03.001","DOIUrl":"10.1016/j.csefa.2014.03.001","url":null,"abstract":"<div><p>The tapered joints of modular hip implants are prone to fretting and crevice-corrosion. This can lead to total failure in under a year, especially for heavier, more active implant recipients. In this study, fractography of a failed Profemur Z implant showed that a life limiting fatigue crack was nucleated on the anterolateral surface of the implant's neck. The fatigue crack nucleation area appeared to have both more fretting damage and a higher corrosion rate than on other surfaces of the neck.</p></div>","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"2 1","pages":"Pages 45-50"},"PeriodicalIF":0.0,"publicationDate":"2014-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csefa.2014.03.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54176581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 19
Low hardness on bearing race—An investigation 轴承滚道硬度低的研究
Case studies in engineering failure analysis Pub Date : 2014-04-01 DOI: 10.1016/j.csefa.2013.12.001
Soham Chattopadhyay , Piyas Palit , Nilotpal Dey
{"title":"Low hardness on bearing race—An investigation","authors":"Soham Chattopadhyay ,&nbsp;Piyas Palit ,&nbsp;Nilotpal Dey","doi":"10.1016/j.csefa.2013.12.001","DOIUrl":"10.1016/j.csefa.2013.12.001","url":null,"abstract":"","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"2 1","pages":"Pages 39-44"},"PeriodicalIF":0.0,"publicationDate":"2014-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csefa.2013.12.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54176503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of internal corrosion in subsea oil pipeline 海底输油管道内腐蚀分析
Case studies in engineering failure analysis Pub Date : 2014-04-01 DOI: 10.1016/j.csefa.2013.12.003
M.N. Ilman, Kusmono
{"title":"Analysis of internal corrosion in subsea oil pipeline","authors":"M.N. Ilman,&nbsp;Kusmono","doi":"10.1016/j.csefa.2013.12.003","DOIUrl":"10.1016/j.csefa.2013.12.003","url":null,"abstract":"<div><p>Failure of a subsea crude oil API 5L X52 steel pipeline which led to oil leakage has been reported to occur after 27 years in service. Some leaks were found to form at the bottom of the horizontal API 5L X52 steel pipeline near an elbow section which connected the pipeline to a riser. The present investigation aims to analyze the main cause of failure by conducting standard failure analysis methods including visual examination, chemical and mechanical characterizations, metallurgical examinations using optical microscopy in combination with scanning electron microscopy (SEM) equipped with energy dispersive X-ray (EDX) analysis and corrosion test using a three-electrode potential technique. Results of this investigation suggest that the cause of failure is electrochemical corrosion combined with mechanical process known as flow-induced corrosion. The failure mechanism is discussed with specific attentions are paid to fluid flow rate and chloride-containing water phase.</p></div>","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"2 1","pages":"Pages 1-8"},"PeriodicalIF":0.0,"publicationDate":"2014-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csefa.2013.12.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54176531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 91
Fault tree analysis of failure cause of crushing plant and mixing bed hall at Khoy cement factory in Iran 伊朗Khoy水泥厂破碎站和搅拌层大厅故障原因的故障树分析
Case studies in engineering failure analysis Pub Date : 2014-04-01 DOI: 10.1016/j.csefa.2013.12.006
Ali Nouri.Gharahasanlou, Ashkan Mokhtarei, Aliasqar Khodayarei, Mohammad Ataei
{"title":"Fault tree analysis of failure cause of crushing plant and mixing bed hall at Khoy cement factory in Iran","authors":"Ali Nouri.Gharahasanlou,&nbsp;Ashkan Mokhtarei,&nbsp;Aliasqar Khodayarei,&nbsp;Mohammad Ataei","doi":"10.1016/j.csefa.2013.12.006","DOIUrl":"10.1016/j.csefa.2013.12.006","url":null,"abstract":"<div><p>Evaluating and analyzing the risk in the mining industry is a new approach for improving the machinery performance. Reliability, safety, and maintenance management based on the risk analysis can enhance the overall availability and utilization of the mining technological systems. This study investigates the failure occurrence probability of the crushing and mixing bed hall department at Azarabadegan Khoy cement plant by using fault tree analysis (FTA) method. The results of the analysis in 200<!--> <!-->h operating interval show that the probability of failure occurrence for crushing, conveyor systems, crushing and mixing bed hall department is 73, 64, and 95 percent respectively and the conveyor belt subsystem found as the most probable system for failure. Finally, maintenance as a method of control and prevent the occurrence of failure is proposed.</p></div>","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"2 1","pages":"Pages 33-38"},"PeriodicalIF":0.0,"publicationDate":"2014-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csefa.2013.12.006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54176564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 46
A failure study of the railway rail serviced for heavy cargo trains 重型货运列车用铁路轨道故障研究
Case studies in engineering failure analysis Pub Date : 2013-10-01 DOI: 10.1016/j.csefa.2013.09.003
Y.D. Li , C.B. Liu , N. Xu , X.F. Wu , W.M. Guo , J.B. Shi
{"title":"A failure study of the railway rail serviced for heavy cargo trains","authors":"Y.D. Li ,&nbsp;C.B. Liu ,&nbsp;N. Xu ,&nbsp;X.F. Wu ,&nbsp;W.M. Guo ,&nbsp;J.B. Shi","doi":"10.1016/j.csefa.2013.09.003","DOIUrl":"10.1016/j.csefa.2013.09.003","url":null,"abstract":"<div><p>In this case study, a failed railway rail which was used for heavy cargo trains was investigated in order to find out its root cause. The macroscopic beach marks and microscopic fatigue striations were not observed by macro and microscopic observations. The chevron patterns were observed by macro observations. The crack origin was at the tip of chevron patterns. The fan-shaped patterns, cleavage step and the river patterns were observed at the crack origin, which demonstrated the feature of cleavage fracture. The metallurgical structures at the crack origin were pearlite and ferrite networks. The crack is supposed to be initiated from the weaker ferrite networks. Given all of that, the failed railway rail is considered to be caused by overload. It is of great importance to improve the welding technology, and control the load of train in order to prevent similar failure in future.</p></div>","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"1 4","pages":"Pages 243-248"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csefa.2013.09.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54176476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 20
Handling abuse causes premature bearing failures 处理滥用导致轴承过早失效
Case studies in engineering failure analysis Pub Date : 2013-10-01 DOI: 10.1016/j.csefa.2013.08.002
K. Gurumoorthy, Bradley D. Faye, Arindam Ghosh
{"title":"Handling abuse causes premature bearing failures","authors":"K. Gurumoorthy,&nbsp;Bradley D. Faye,&nbsp;Arindam Ghosh","doi":"10.1016/j.csefa.2013.08.002","DOIUrl":"10.1016/j.csefa.2013.08.002","url":null,"abstract":"","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"1 4","pages":"Pages 235-242"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csefa.2013.08.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54176433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
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