Engineering Failure Analysis最新文献_第2页

A physics-informed machine learning framework for predicting the failure pressure of buried PVC pipelines with axial cracks 用于预测具有轴向裂缝的埋地PVC管道失效压力的物理信息机器学习框架

IF 4.4 2区工程技术

Engineering Failure Analysis Pub Date : 2025-07-14 DOI: 10.1016/j.engfailanal.2025.109896

Pengfei Tang , Shubei Mo , Nianchun Deng , Zhiyuan Li , Changheng Lu

{"title":"A physics-informed machine learning framework for predicting the failure pressure of buried PVC pipelines with axial cracks","authors":"Pengfei Tang , Shubei Mo , Nianchun Deng , Zhiyuan Li , Changheng Lu","doi":"10.1016/j.engfailanal.2025.109896","DOIUrl":"10.1016/j.engfailanal.2025.109896","url":null,"abstract":"<div><div>Due to the coupling effect of internal pressure, external soil load and crack geometry, accurately predicting the failure pressure of cracked buried pipelines remain a critical challenge. This study develops a physics-informed neural network. By embedding physical constraints into the loss function, mechanical principles are integrated into the training process of the model. Furthermore, the Bayesian optimisation strategy is adopted to obtain the optimal hyperparameters of the model automatically. The proposed model integrates geometric, material and load parameters and is capable of accurately predicting the failure pressure of cracked buried pipelines under complex underground conditions. Through performance testing and comparison with traditional data-driven models, this model has achieved more satisfactory prediction accuracy and robustness. Meanwhile, this model exhibits excellent generalization capability on small sample datasets. The results show that combining physics-informed with machine learning can provide a reliable and effective method for the health assessment of pipeline structures with cracks.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"180 ","pages":"Article 109896"},"PeriodicalIF":4.4,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing wear resistance of wire-arc directed energy deposition Mg alloy via introducing high-density twins and dislocations 通过引入高密度孪晶和位错提高线弧定向能沉积镁合金的耐磨性

IF 4.4 2区工程技术

Engineering Failure Analysis Pub Date : 2025-07-13 DOI: 10.1016/j.engfailanal.2025.109894

Boqiao Ren, Yihao Gao, Xinchen Sui, Xinye Li, Yan Fu, Xiaohui Zhao, Chao Chen

{"title":"Enhancing wear resistance of wire-arc directed energy deposition Mg alloy via introducing high-density twins and dislocations","authors":"Boqiao Ren, Yihao Gao, Xinchen Sui, Xinye Li, Yan Fu, Xiaohui Zhao, Chao Chen","doi":"10.1016/j.engfailanal.2025.109894","DOIUrl":"10.1016/j.engfailanal.2025.109894","url":null,"abstract":"<div><div>It is a huge challenge for the wear resistance of Mg alloys in applications such as transmission friction components. This is also critical for Mg components prepared by wire-arc directed energy deposition (WA-DED). In this study, a superior wear resistance in WA-DED manufactured AZ31 Mg thin-walled component with high-density twins and dislocations was achieved by employing the deformation field originating from ultrasonic impact treatment on each deposited layer. The introduction of high-density twins and dislocations refined the microstructure under their splitting grain effect. Meanwhile, the hardness of components was enhanced, resulting in lower coefficient of friction and wear rates. And worn tracks exhibited milder wear characteristics such as abrasive and oxidation, delamination-free was detected compared with components without twins and dislocations. The improved wear resistance mainly resulted from twins and dislocations pile-up inducing the hardening effect and the higher work hardening response during sliding, inhibiting surface deformation and crack propagation. Additionally, the uniform tribo-oxide layer formed by introducing numerous twin boundaries also played an important role in suppressing material spalling, thermal softening and melting at higher sliding velocities. This study provides a novel strategy for preparing WA-DED Mg alloy thin-walled components with the excellent wear resistance.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"180 ","pages":"Article 109894"},"PeriodicalIF":4.4,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the influence of riveting sequence on the failure of Multi-Rivet Thin-Walled structures 铆接顺序对多铆接薄壁结构破坏影响的研究

IF 4.4 2区工程技术

Engineering Failure Analysis Pub Date : 2025-07-12 DOI: 10.1016/j.engfailanal.2025.109893

Xupeng Du , Yajun Chen , Xiang Ji , Zhengyang Nie

{"title":"Study on the influence of riveting sequence on the failure of Multi-Rivet Thin-Walled structures","authors":"Xupeng Du , Yajun Chen , Xiang Ji , Zhengyang Nie","doi":"10.1016/j.engfailanal.2025.109893","DOIUrl":"10.1016/j.engfailanal.2025.109893","url":null,"abstract":"<div><div>Research on the mechanical performance of repaired riveted joints in military aircraft remains limited, particularly for multi-rivet configurations. This study investigates the tensile behavior and failure mechanisms of multi-rivet joints. Results indicate that stress and strain were concentrated near the central axis during tensile loading, with buckling occurring at strain levels between 49% and 55%. The failure sequence typically involves initial shear failure of the patch around the bottom rivet, followed by fracture of the base aluminum sheet, and subsequent shear failure of the patches surrounding the side rivets. Residual stresses introduced during the riveting process significantly affect tensile performance; notably, the distribution pattern exerts a more critical influence than stress magnitude by altering fracture timing and load distribution. Among the three riveting sequences analyzed, the diffusely symmetric riveting configuration demonstrates the best tensile performance, achieving a maximum tensile load approximately 9.5% higher than that of the star-symmetric arrangement, while also avoiding misalignment between the base material and the patch.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"180 ","pages":"Article 109893"},"PeriodicalIF":4.4,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formation and development of surface fold defects in heavy-duty rails 重载钢轨表面褶皱缺陷的形成与发展

IF 4.4 2区工程技术

Engineering Failure Analysis Pub Date : 2025-07-11 DOI: 10.1016/j.engfailanal.2025.109889

Wang Huijun , Yang Shanwu , Su Shuai , Xie Zhenjia , Shang Chengjia , Liang Zhengwei , Wang Yongming , Xue Hudong , Zhou Ke

{"title":"Formation and development of surface fold defects in heavy-duty rails","authors":"Wang Huijun , Yang Shanwu , Su Shuai , Xie Zhenjia , Shang Chengjia , Liang Zhengwei , Wang Yongming , Xue Hudong , Zhou Ke","doi":"10.1016/j.engfailanal.2025.109889","DOIUrl":"10.1016/j.engfailanal.2025.109889","url":null,"abstract":"<div><div>This study explored the formation and propagation of longitudinal cracks in the webs of in-service rails. Based on the mechanical property testing, hardness measurements, and microstructural analyses, the cracks were identified as originating from a rolling-induced defect known as“folding”. The formation mechanism of the folding defect and its contribution crack propagation were further analyzed through corrosion resistance experiments and stress analysis simulations. The results indicated that microcracks and shrinkage porosity within the metal oxide film at the folding site exposed the underlying metal to the external environment. Under cyclic fatigue loading during rail operation, this exposure accelerated the crack growth from the folding defect. The associated safety risk is closely linked to the rail stress state: fold defects located on the outer surface (non-load-bearing) side of the web are less critical than those on the inner surface (load-bearing) side. As rail wear progressed, the stress concentrations increased by a factor of 1in straight sections and more than threefold in curved sections, which substantially posed the risk of failure under repeated loading and a significant threat to railway operational safety.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"180 ","pages":"Article 109889"},"PeriodicalIF":4.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144634384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling of torsional fatigue failure and experimental investigation 扭转疲劳失效建模与试验研究

IF 4.4 2区工程技术

Engineering Failure Analysis Pub Date : 2025-07-11 DOI: 10.1016/j.engfailanal.2025.109892

Guang Xiong , Qingbing Dong , Bo Zhao , Xiujiang Shi , Chunhua Ran , Xueyu Bai

{"title":"Modeling of torsional fatigue failure and experimental investigation","authors":"Guang Xiong , Qingbing Dong , Bo Zhao , Xiujiang Shi , Chunhua Ran , Xueyu Bai","doi":"10.1016/j.engfailanal.2025.109892","DOIUrl":"10.1016/j.engfailanal.2025.109892","url":null,"abstract":"<div><div>In this study, an elastic–plastic damage model for fatigue life prediction is developed based on continuum damage mechanics, and the fatigue characteristics of torsion specimens of 18CrNiMo7-6 steel are investigated experimentally. A damage-coupled elastic–plastic constitutive model considering non-linear isotropic/kinematic hardening is established, and the material parameters are calibrated. A damage variable coupling elastic and plastic components is introduced, and corresponding damage parameters are obtained from torsional fatigue tests with an 80 % confidence level. A finite element model is established, and the errors of predicted and experimental lives are within the triple error band, validating the correctness of the elastic–plastic damage model. The damage evolution laws and weakening effects of damage are revealed. The results indicate that purely elastic damage under lower loads weakens local yield capacity and consequently leads to plastic damage in the following stage. Kinematic hardening achieves saturation stress of 152 MPa at an early stage, while isotropic softening requires higher plastic strain to attain saturation at 115 MPa. Cracks initiate at maximum octahedral shear stress zone, resulting in instantaneous fracture with smooth contour (at ≤70 % critical torque) or ductile tearing with 5–20 µm dimples (at ≥80 % critical torque). A life factor <em>Z</em><sub>NT</sub> ≥ 1.21 is recommended to further narrow the design range beyond that suggested by the standards.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"180 ","pages":"Article 109892"},"PeriodicalIF":4.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interfacial microstructure evolution and fracture mechanism of 6063 aluminum alloy joints vacuum brazed with Al-Si-Mg filler metal Al-Si-Mg钎料真空钎焊6063铝合金接头界面组织演变及断裂机制

IF 4.4 2区工程技术

Engineering Failure Analysis Pub Date : 2025-07-11 DOI: 10.1016/j.engfailanal.2025.109879

Xuehu Bai , Fei Zhao , Wensen Huang , Xiang Du , Yuan Liu , Dandan Zhu

{"title":"Interfacial microstructure evolution and fracture mechanism of 6063 aluminum alloy joints vacuum brazed with Al-Si-Mg filler metal","authors":"Xuehu Bai , Fei Zhao , Wensen Huang , Xiang Du , Yuan Liu , Dandan Zhu","doi":"10.1016/j.engfailanal.2025.109879","DOIUrl":"10.1016/j.engfailanal.2025.109879","url":null,"abstract":"<div><div>This study systematically investigated the microstructural evolution and fracture mechanisms of vacuum brazed joints of 6063 aluminum alloy using Al-Si-Mg filler metal. The effect of the brazing time on the microstructural evolution and shear strength of the brazed joints was analyzed. The fracture mechanism was observed and analyzed by in-situ scanning electron microscope. It is shown that when the brazing time was 10 min, brazed seam was primarily composed of the segregation of Si. As the brazing time was 50 min, the segregation of Si phase greatly reduced. Due to sufficient diffusion of various elements in the brazed joint, the maximum shear strength of 143.5 MPa was attained. During in-situ tensile testing, cracks initiated at the Si particles and the base material interface propagated along the brazed seam. When the propagating cracks encountered the base material in the curved brazed seam, their propagation was hindered. Moreover, due to the combined effects of vacancy and silicon depletion, the precipitation-free zone was formed in the diffusion zone, resulting in the formation of secondary cracks. These secondary cracks propagated and interconnected along the slip bands, ultimately resulting in the fracture of joints. The findings may provide theoretical significance for the process of vacuum brazing of aluminum alloys.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"180 ","pages":"Article 109879"},"PeriodicalIF":4.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Failure analysis on abnormal leakage current of power modules in the electric vehicle inverters 电动汽车逆变器电源模块漏电流异常故障分析

IF 4.4 2区工程技术

Engineering Failure Analysis Pub Date : 2025-07-11 DOI: 10.1016/j.engfailanal.2025.109891

Xin-Yu Lu, Tong-Tong Bi, Yi Gong, Zhen-Guo Yang

{"title":"Failure analysis on abnormal leakage current of power modules in the electric vehicle inverters","authors":"Xin-Yu Lu, Tong-Tong Bi, Yi Gong, Zhen-Guo Yang","doi":"10.1016/j.engfailanal.2025.109891","DOIUrl":"10.1016/j.engfailanal.2025.109891","url":null,"abstract":"<div><div>The efficiency and safety of electric vehicles depend significantly on the electronic control system and its critical components, especially the power modules in the inverter. The failure of the power module can pose a significant threat to the overall efficiency and safety of the electric vehicle. However, there is still limited in-depth research on the failure analysis of power modules. A comprehensive failure analysis of abnormal leakage current failure in power modules of electric vehicle inverters was conducted. Commissioned by an automobile company, material inspection and microstructural analysis were performed, and various failure modes and defects were systematically investigated. Ultimately, the root cause of abnormal leakage current in the power module was identified. Evidence shows that the cracking of the silicon nitride substrate inside the power module, caused by localized stress concentration, is the fundamental cause of the leakage current. Building on this analysis, potential issues in the design, manufacturing, and installation processes are further explored, and targeted improvement measures are proposed. The research findings provide crucial engineering guidance and technical support for enhancing the safety and stability of electric vehicle inverters.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"180 ","pages":"Article 109891"},"PeriodicalIF":4.4,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144631597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Failure analysis of nozzle clogging during Super304H stainless steel continuous casting production Super304H不锈钢连铸生产中喷嘴堵塞失效分析

IF 4.4 2区工程技术

Engineering Failure Analysis Pub Date : 2025-07-10 DOI: 10.1016/j.engfailanal.2025.109890

Tong Qiao , Yanling Zhang , Guoguang Cheng , Mengjie Zhou , Yongjing Zeng , Weixing Dai , Qiming Wang , Binhua Ding

{"title":"Failure analysis of nozzle clogging during Super304H stainless steel continuous casting production","authors":"Tong Qiao , Yanling Zhang , Guoguang Cheng , Mengjie Zhou , Yongjing Zeng , Weixing Dai , Qiming Wang , Binhua Ding","doi":"10.1016/j.engfailanal.2025.109890","DOIUrl":"10.1016/j.engfailanal.2025.109890","url":null,"abstract":"<div><div>This study elucidates the clogging mechanisms of the submerged entry nozzle (SEN) during the continuous casting of Super304H stainless steel through an integrated approach combining systematic analysis and thermodynamic calculations. The dissection of a clogged SEN revealed a stratified morphology comprising: (i) an initial solidified steel layer (Layer A) containing entrapped steel and eroded refractory; (ii) a slag-type inclusion layer (Layer B) predominantly composed of Al-Ca-Si-Mg-F-O inclusions with elevated Al<sub>2</sub>O<sub>3</sub> content and diminished liquid phase fraction, attributed to interfacial oxidation and thermal gradients; and (iii) a dense clogging layer (Layer C) consisting of both slag-derived and endogenous inclusions, embedded within solidified steel. It was demonstrated that during the tundish stage, the formation of high-Al<sub>2</sub>O<sub>3</sub> inclusions and their aggregation into a porous network critically impede melt flow, thereby initiating clogging. To suppress the formation of Layer B, the Al<sub>2</sub>O<sub>3</sub> content in inclusions should be constrained below 56 %. Furthermore, maintaining the total oxygen (T.O) content within the range of 0.0049–0.0075 wt% ensures a liquid phase ratio of inclusions exceeding 50 %, thereby mitigating the risk of flow blockage. The outcomes of this study provide a scientific basis and process control strategy for the mitigation of SEN clogging and the enhancement of continuous casting product quality in advanced stainless steel manufacturing.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"180 ","pages":"Article 109890"},"PeriodicalIF":4.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Damage failure and mapping model of PI insulation film in equivalent test of PMTMSC forming process PMTMSC成形过程等效试验中PI绝缘膜的损伤失效及映射模型

IF 4.4 2区工程技术

Engineering Failure Analysis Pub Date : 2025-07-10 DOI: 10.1016/j.engfailanal.2025.109887

Ao Hu , Jian Hu , Jun Xu , Maijia Ma , Weiye Li , Zili Lu

{"title":"Damage failure and mapping model of PI insulation film in equivalent test of PMTMSC forming process","authors":"Ao Hu , Jian Hu , Jun Xu , Maijia Ma , Weiye Li , Zili Lu","doi":"10.1016/j.engfailanal.2025.109887","DOIUrl":"10.1016/j.engfailanal.2025.109887","url":null,"abstract":"<div><div>The polyimide (PI) film on the electromagnetic wire is an important insulation material for electronic devices, but the mechanical load during the forming process can pose a risk of damage to the polyimide film. This article studies the damage law of PI insulation film in different stress concentration areas through equivalent experiments of the forming process, and analyses the evolution law of the forming process and crack propagation. The research methods include: analysing the stress concentration area and crack initiation law based on bending loading fracture simulation method, calculating the stress and crack length based on fracture mechanics analysis method, and characterizing the crack propagation evolution law based on scanning electron microscopy (SEM) test method. Build a mapping model between the equivalent sample and the formed coil, and apply it to the forming process of the permanent magnet traction motor stator coil (PMTMSC) of China Railway High speed Train (CR450), linking the damage law of the equivalent sample to practical engineering. The results indicate that the error in residual stress between the equivalent sample and the coil prototype is 8.6 %. When the bending deflection reaches 38 mm in the equivalent test, there is a 2.8 μm crack initiation, which poses a risk of failure after passing the insulation resistance test. After optimization, the deflection of the formed coil is less than 64 mm, which can avoid insulation failure. Provide experimental basis for optimizing manufacturing and forming processes and coil structure design of electromagnetic wire electrical materials.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"180 ","pages":"Article 109887"},"PeriodicalIF":4.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144613878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Failure analysis of the premature fan blade-off in aeroengine containment test 航空发动机安全壳试验中风扇过早脱落失效分析

IF 4.4 2区工程技术

Engineering Failure Analysis Pub Date : 2025-07-10 DOI: 10.1016/j.engfailanal.2025.109888

Wenjun Yang , Yinhao Wang , Jichen Li , Junfeng Hao , Jiran Gao

{"title":"Failure analysis of the premature fan blade-off in aeroengine containment test","authors":"Wenjun Yang , Yinhao Wang , Jichen Li , Junfeng Hao , Jiran Gao","doi":"10.1016/j.engfailanal.2025.109888","DOIUrl":"10.1016/j.engfailanal.2025.109888","url":null,"abstract":"<div><div>The fracture of fan blades caused by the foreign object damage is a serious threat to the aeroengine service safety. To investigate the impact effect after blade-off, an aeroengine containment test is conducted under non-vacuum conditions. However, the pre-notched fan blade detaches prematurely at a rotational speed below the design threshold. To explain this anomaly, this study combines the numerical and theoretical approaches to analyze the failure causes. Firstly, a structural model of the pre-notched fan blade is established, and modal analysis is conducted to assess the potential influence of resonance on failure. Subsequently, considering the rotor–stator interference caused by support plates, a model of the unsteady flow field is established. Finally, a fluid–structure interaction (FSI) method is employed to explore the influence of coupled aerodynamic and centrifugal loads on stress distribution. The results indicate that resonance effects are not the primary cause of blade failure. In the non-vacuum environment, the introduction of aerodynamic load subjects the blade to complex multiaxial stress states. Compared to the condition with only centrifugal loading, the Mises stress at the notch increases by 15.2%, exceeding the ultimate tensile strength of the TC4 alloy and finally leading to the premature blade-off.</div></div>","PeriodicalId":11677,"journal":{"name":"Engineering Failure Analysis","volume":"180 ","pages":"Article 109888"},"PeriodicalIF":4.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0