Case studies in engineering failure analysis最新文献_第6页

Failure analysis of a leaked oil pipeline 输油管道泄漏故障分析

Case studies in engineering failure analysis Pub Date : 2015-10-01 DOI: 10.1016/j.csefa.2015.09.004

En-Na Yang, Chang-Ming Fu, Chen Dong, Shen Qu, Ji-Feng Tian, Zhe-Feng Zhang

引用次数: 10

Fracture analysis of U71Mn rail flash-butt welding joint U71Mn钢轨闪光对接焊接接头断裂分析

Case studies in engineering failure analysis Pub Date : 2015-10-01 DOI: 10.1016/j.csefa.2015.05.001

Xuemei Yu , Lichao Feng , Shijie Qin , Yuanliang Zhang , Yiqiang He

引用次数: 22

An analysis of crack evolution of a 12Cr13 stainless steel during forging process 12Cr13不锈钢在锻造过程中的裂纹演化分析

Case studies in engineering failure analysis Pub Date : 2015-10-01 DOI: 10.1016/j.csefa.2015.10.002

Wei-min Guo , Na Xu , Ning Ding , Jun-bo Shi , C.M. Lawrence Wu

引用次数: 2

Failure analysis of a motor-car coil spring 汽车线圈弹簧失效分析

Case studies in engineering failure analysis Pub Date : 2015-10-01 DOI: 10.1016/j.csefa.2013.12.004

Ladislav Kosec , Aleš Nagode , Gorazd Kosec , Dušan Kovačević , Blaž Karpe , Borut Zorc , Borut Kosec

引用次数: 15

Perforated mechanism of a water line outlet tee pipe for an oil well drilling rig 油井钻机输水管道出口三通管的穿孔机构

Case studies in engineering failure analysis Pub Date : 2015-10-01 DOI: 10.1016/j.csefa.2015.07.002

Peng Cheng-hong, Zhu Wei-heng, Liu Zheng-yi, Wei Xing-zhao

{"title":"Perforated mechanism of a water line outlet tee pipe for an oil well drilling rig","authors":"Peng Cheng-hong, Zhu Wei-heng, Liu Zheng-yi, Wei Xing-zhao","doi":"10.1016/j.csefa.2015.07.002","DOIUrl":"10.1016/j.csefa.2015.07.002","url":null,"abstract":"<div><p>A corroded tee pipe belonging to a 10-in new separator water line outlet installed in an offshore oil well drilling rig was investigated. The configuration of the large corroded pit had the shape of an imperfect horse's hoof with a completely corroded interior and a honeycomb-like cavity. There is a badly corroded pit at the welded seam at the joint connecting the tee pipe and flange. The material strength of the tee pipe meets the requirement of ASTM-A234 Gr. WPR, but its chemical composition does not meet the stipulated requirements. A deformed streamline structure or twin crystal in the ferrite phase can be seen near the surface or sub-surface of the perforated corrosion puncture edge. The micro-hardness is also different from that of the original material. The SEM results show that the puncture appears to have been a mode of quasi-cleavage fractures with secondary cracks along the direction of the crystal grain; thus, the failure has the features of mechanical and chemical corrosion. The corroded surface contains high amounts of O, C, and N, as well as S, Cl, Si, Na, Mg, Al, K, Ti, etc., all of which are corrosion products caused by sea water. The penetrating puncture hole at the turn of the tee pipe is likely the result of cavitation erosion accompanied by chemical/electrochemical corrosion, and the corrosion on the seam connecting the tee pipe and flange is likely the result of electrochemical corrosion.</p></div>","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"4 ","pages":"Pages 39-49"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csefa.2015.07.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54177110","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: 5

Failure study of a cracked speed boat steering wheel 快艇方向盘断裂的失效研究

Case studies in engineering failure analysis Pub Date : 2015-10-01 DOI: 10.1016/j.csefa.2015.09.002

Goran Vukelic

引用次数: 2

Vibration measurement-based simple technique for damage detection of truss bridges: A case study 基于振动测量的桁架桥梁损伤检测简易技术研究

Case studies in engineering failure analysis Pub Date : 2015-10-01 DOI: 10.1016/j.csefa.2015.08.001

Sudath C. Siriwardane

{"title":"Vibration measurement-based simple technique for damage detection of truss bridges: A case study","authors":"Sudath C. Siriwardane","doi":"10.1016/j.csefa.2015.08.001","DOIUrl":"10.1016/j.csefa.2015.08.001","url":null,"abstract":"<div><p>The bridges experience increasing traffic volume and weight, deteriorating of components and large number of stress cycles. Therefore, assessment of the current condition of steel railway bridges becomes necessary. Most of the commonly available approaches for structural health monitoring are based on visual inspection and non-destructive testing methods. The visual inspection is unreliable as those depend on uncertainty behind inspectors and their experience. Also, the non-destructive testing methods are found to be expensive. Therefore, recent researches have noticed that dynamic modal parameters or vibration measurement-based structural health monitoring methods are economical and may also provide more realistic predictions to damage state of civil infrastructure. Therefore this paper proposes a simple technique to locate the damage region of railway truss bridges based on measured modal parameters. The technique is discussed with a case study. Initially paper describes the details of considered railway bridge. Then observations of visual inspection, material testing and in situ load testing are discussed under separate sections. Development of validated finite element model of the considered bridge is comprehensively discussed. Hence, variations of modal parameters versus position of the damage are plotted. These plots are considered as the main reference for locating the damage of the railway bridge in future periodical inspection by comparing the measured corresponding modal parameters. Finally the procedure of periodical vibration measurement and damage locating technique are clearly illustrated.</p></div>","PeriodicalId":91224,"journal":{"name":"Case studies in engineering failure analysis","volume":"4 ","pages":"Pages 50-58"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.csefa.2015.08.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"54177123","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: 36

WITHDRAWN: Failure analysis of tyre production process using FMECA method 撤回:用FMECA方法对轮胎生产过程进行失效分析

Case studies in engineering failure analysis Pub Date : 2015-08-04 DOI: 10.1016/J.CSEFA.2015.07.001

Nurul Hayati Hasbullah, R. Ahmad

引用次数: 4

WITHDRAWN: A failure analysis study on the packing cups of a hyper compressor 撤销:高压压缩机填料杯失效分析研究

Case studies in engineering failure analysis Pub Date : 2015-06-11 DOI: 10.1016/J.CSEFA.2015.06.001

Sh. Molaei, R. Alizadeh, M. Attarian, Y. Jaferian, P. Shojaei

引用次数: 0

Failure analysis on unexpected wall thinning of heat-exchange tubes in ammonia evaporators 氨蒸发器换热管壁意外变薄的失效分析

Case studies in engineering failure analysis Pub Date : 2015-04-01 DOI: 10.1016/j.csefa.2015.01.002

Shi-Meng Hu , Sheng-Hui Wang , Zhen-Guo Yang

引用次数: 19