Article
Materials Science, Multidisciplinary
Jie Zhu, Hiroyuki Kokawa, Kai Feng, Zhuguo Li
Summary: The intergranular corrosion resistance of Inconel 625 produced by laser powder bed fusion was investigated using ASTM-G28 method A. Severe corrosion near fusion boundaries was unexpectedly found. The initiation and expansion of corrosion along the fusion boundaries and the relationship between microstructure and corrosion behavior were analyzed. This unusual corrosion behavior was attributed to the Volta potential variation caused by Al2O3 nanoparticles and Mo, Nb-rich precipitates near the fusion boundaries. This finding can enhance the understanding of corrosion behavior in laser powder bed fused nickel alloys.
Article
Chemistry, Physical
Xiuquan Yao, Lei Wen, Zhigang Yu, Wei Guo, Feifei Huang, Yujie Qiang, Ying Jin
Summary: The corrosion behavior of 5A06 aluminum alloy in N2O4 was investigated, and the influence of immersion time was explored. XPS results confirmed the presence of corrosion products N-H and nitrate. Surface morphology analysis showed that corrosion mainly occurred around intermetallic compounds. The dissolution of the aluminum matrix and dealloying of magnesium were the reasons behind the corrosion. The study provides important insights into the corrosion mechanism of aluminum alloy in the N2O4 system.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Nida Nur Erdogan, Aziz Baris Basyigit
Summary: This study focuses on the thermal barrier coating system of Inconel 601, a nickel-based superalloy, and determines that the sample with a 100 μm ceramic top coating thickness exhibits the highest corrosion resistance and thermal shock resistance through thermal shock and electrochemical corrosion tests.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Engineering, Civil
Mateusz Kopec, Dominika Gorniewicz, Dominik Kukla, Izabela Barwinska, Stanislaw Jozwiak, Ryszard Sitek, Zbigniew L. Kowalewski
Summary: This paper presents a comparison of microhardness, fatigue, and high temperature corrosion of Inconel 740H alloy with and without nitrided surface layers. The study found that nitrided surfaces significantly improved the fatigue response and hardness of the alloy, with cathode nitriding enhancing corrosion resistance and protection against high temperature oxidation.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Ankur Kumar, Gajanan P. Chaudhari, S. K. Nath
Summary: The stress corrosion cracking (SCC) behavior of high-zinc (>7 wt%) 7068 alloys treated with different retrogression and re-ageing processes was investigated. The resistance to SCC and inter-granular corrosion was found to be correlated with microstructural and compositional heterogeneities. Specimens that were pre-aged at 1000C and retrogression treated at 180 degrees C showed slower reduction reaction kinetics in polarization studies, indicating better SCC resistance. The oxygen reduction kinetics were also affected by the size of matrix precipitates, in addition to the microchemistry of grain boundary precipitates. An increase in copper content of discontinuous boundary precipitates did not consistently lead to improved SCC resistance. 7068 alloy specimens pre-aged at lower temperature exhibited higher strength and SCC resistance.
Article
Materials Science, Multidisciplinary
Olugbenga Ogunbiyi, Tamba Jamiru, Rotimi Sadiku, Oluwagbenga Adesina, Olanrewaju Seun Adesina, Babatunde Abiodun Obadele
Summary: This study investigates the microstructure, corrosion, and tribological properties of spark plasma sintered graphene nanoplatelets (GNPs) reinforced Inconel 738 low carbon composites. The addition of GNPs greatly enhances the wear resistance and reduces the friction coefficient of the sintered composites.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Guilherme dos Santos Vacchi, Rodrigo Silva, Cristie Luis Kugelmeier, Claudio Beserra Martins Junior, Isabela Dainezi, Jose Henrique Alano, Anibal de Andrade Mendes Filho, Wislei Riuper Ramos Osorio, Carlos Alberto Della Rovere
Summary: The study shows that multi-pass shielded metal arc welding can lead to the formation of non-metallic micrometric inclusions in the weld metal region, resulting in decreased corrosion resistance. Additionally, differences in hardness values were observed between the base metal and weld metal regions.
Article
Materials Science, Multidisciplinary
Can Peng, Gongwang Cao, Tianzhen Gu, Chuan Wang, Zhenyao Wang, Cheng Sun
Summary: The corrosion behavior of extruded 6061 Al alloy in simulated Nansha marine atmosphere was investigated using electrochemical measurements, microscopic observations, and X-ray photoelectron spectroscopy (XPS) tests. Severe intergranular and intragranular corrosion were observed on the sample surface, with Mg2Si phase and AlFeSi particles playing important roles. The preferential dissolution of Mg from the Mg2Si phase was found and explained thermodynamically. This study provides valuable information for understanding the corrosion behavior and mechanism of the 6061 Al alloy in simulated marine atmosphere and can aid in the development of new alloys resistant to corrosion in this environment in the future.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Yanan Pu, Wenwen Dou, Y. Frank Cheng, Shougang Chen, Zixuan Xu, Zhaoyang Chen
Summary: This study investigates the microbiologically influenced corrosion (MIC) of 90/10 copper-nickel alloy in the presence of anaerobic Desulfovibrio vulgaris. The corrosion rate of the alloy varies with different energy starvation levels due to varying biogenic H2S concentrations and extracellular electron transfer (EET) by D. vulgaris. Biogenic H2S causes degradation of the passive films generated on the alloy. The presence of 20 ppm riboflavin accelerates the weight loss of the alloy by 52%. The EET routes result in localized corrosion of the nickel component in the alloy. Two types of MIC mechanisms coexist in the 90/10 Cu-Ni alloy MIC by D. vulgaris.
Article
Materials Science, Multidisciplinary
Wenjun Kuang, Xingyu Feng, Han Yue, Gary S. Was, Xianchao Hao
Summary: The effect of intergranular carbides on the stress corrosion crack initiation of alloy 690 in high-temperature hydrogenated water was systematically investigated. It was found that the resistance to SCC initiation increases with increasing carbide coverage. Mechanically, the carbide prevents the breach of surface oxide film and reduces grain boundary migration, and it also decomposes to provide Cr source for forming protective oxide film.
Article
Materials Science, Multidisciplinary
Xiaodong Lin, Xue Liang, Yifeng Li, Kun He, Peinan Du, Ruiqian Zhang, Ping Chen
Summary: The corrosion behaviors of a Fe13Cr4Al2Mo1.2Nb alloy were studied in 360 degrees C water and 400 degrees C steam. Similar dual-layered oxide scales were formed under both conditions, but the inner oxide layer was thicker in 400 degrees C steam, indicating steam-accelerated corrosion.
Article
Materials Science, Multidisciplinary
Wenjun Kuang, Shengkai Wang, Xingyu Feng, Han Yue
Summary: The initiation of stress corrosion cracking in alloy 690 in simulated PWR primary water is inhibited by intergranular carbide precipitation, but this effect weakens with increasing strain rate.
Article
Materials Science, Multidisciplinary
Pratyush Mishra, Denizhan Yavas, Abdullah Alshehri, Pranav Shrotriya, Ashraf Bastawros, R. Kurt Hebert
Summary: The paper presents a model for intergranular corrosion of nonsensitized low-carbon pipeline steels, where enhanced grain boundary oxidation is explained by vacancies produced by reactive Si atoms. Experimental evidence supports the role of vacancy diffusion in the evolution of IGC, with calculations showing agreement with experimental measurements. The rationalization of sharpening of GB grooves over time during corrosion exposures and the quantitative explanation of IGC enhancement by vacancy diffusion without solute segregation or precipitation at GBs are key findings.
Article
Materials Science, Multidisciplinary
Monica C. R. Guimaraes, Joao B. Fogagnolo, Jose M. Paiva, Stephen C. Veldhuis, Anselmo E. Diniz
Summary: Nickel-based alloys are widely used in aerospace components and the oil and gas industry. However, their machining is challenging due to their characteristics. This study evaluates the influence of tool geometry, feed rate, and cutting speed on the surface integrity of Inconel 625 cladding milling process. The results show that cutting speed has the greatest impact on specific cutting pressure, and both cutting speed and feed rate affect the thickness of the deformed layer. The surface and subsurface alterations caused by mechanical-thermal loadings have beneficial effects on corrosion resistance and compressive residual stress.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Xiaoya Wang, Guoai Li, Qiyao He, Jiantang Jiang, Dongfeng Li, Wenzhu Shao, Liang Zhen
Summary: The intergranular corrosion in a partially recrystallized 2A97 Al-Cu-Li alloy at different tempers was investigated. It was found that the T6-tempered alloy was susceptible to intergranular and intersubgranular corrosion, while the T8-tempered alloy showed reduced sensitivity to IGC and ISGC. In the T8-tempered alloy, intragranular pitting was the dominant corrosion mechanism. The distribution of precipitates and solutes at grain and subgrain boundaries were analyzed using TEM, STEM-EDX, and APT to understand the key factors influencing localized corrosion.
Article
Surgery
Fizzah Arif, Muhammad Arsalan Khan, Shah Muhammad, Abdaal Waseem Khan
Summary: This case describes a 40-year-old female diagnosed with a gallbladder mass and underwent radical cholecystectomy. The microscopic analysis of the surgical specimen confirmed the diagnosis of multifocal intracholecystic papillary-tubular neoplasms with negative resection margin.
INDIAN JOURNAL OF SURGERY
(2022)
Article
Chemistry, Physical
V. Puneeth, Rajeev Anandika, S. Manjunatha, Muhammad Ijaz Khan, M. Imran Khan, Ali Althobaiti, Ahmed M. Galal
Summary: The analysis of enhancing heat transfer by adding nanoparticles to a traditional fluid has been studied by researchers worldwide. This article focuses on the heat and mass transfer characteristics of ternary nanofluid formed by suspending three different nanoparticles. A mathematical model is used to analyze the flow characteristics, and the results obtained through numerical methods are used to study the impact of fluid flow parameters on heat and mass transfer rates.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Thermodynamics
Khurram Javid, Mazhar Ellahi, Kamel Al-Khaled, Mohsin Raza, Sami Ullah Khan, M. Ijaz Khan, Essam Roshdy El-Zahar, Soumaya Gouadria, Muhammad Afzaal, M. Imran Khan
Summary: This study models the physical impacts of porosity and thermal slip on the flow features of nanofluid through an asymmetric micro-channel, considering the effects of electro-osmosis and magnetic field. Convective boundary conditions are used while neglecting thermal and buoyancy forces. The rheological equations are transformed into non-dimensional flow systems using scaling variables. The study evaluates the exact solutions of these equations using Mathematica software 11.0, and presents the graphical representation of the dynamic impacts of embedded parameters. The findings provide valuable insights into biomimetic energy frameworks and serve as a benchmark for numerical and experimental multi-physics simulations.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Energy & Fuels
Sohail A. Khan, M. Imran Khan, Shami A. M. Alsallami, Sharifah E. Alhazmi, Fahad M. Alharbi, Essam Roshdy El-Zahar
Summary: This paper focuses on analyzing entropy optimization in chemical reactive flow using a curvilinear coordinate system. Numerical analysis shows that an increase in curvature variable improves fluid flow and concentration, while an increase in Schmidt number leads to a decrease in concentration.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Thermodynamics
Hanumesh Vaidya, K. Prasad, M. Ijaz Khan, F. Mebarek-Oudina, I Tlili, C. Rajashekhar, Shivaleela, Samia Elattar, Muhammad Imran Khan, Sami G. Al-Gamdi
Summary: This paper investigates the blood flow analysis through a non-uniform inclined channel using non-Newtonian Phan-Thien-Tanner (PTT) liquid and studies the impact of chemical reactions and convective boundary conditions. The results suggest that geometric parameters play a vital role in liquid transport phenomena, and the magnetic field has an influence on blood velocity and thermal determination of particles.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Engineering, Mechanical
S. Hussain, A. Shakoor, T. Yasmin
Summary: This research analyzes and characterizes open cell aluminium foam with 20 pores per inch of Alporas rout under mechanical loading to gain understanding about pore size for selection in engineering applications. Tests including three point bending, tensile, compression, vickers hardness, and charpy impact were conducted, with SEM used to investigate failure modes. Various internal defects and failure mechanisms were observed.
JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES
(2022)
Article
Thermodynamics
Muhammad Imran Khan, Faisal Asfand, Sami G. Al-Ghamdi
Summary: Concentrated solar power (CSP) technologies are considered as one of the most promising ways to generate electric power in the future. The integration of efficient and cost-effective thermal energy storage (TES) systems is crucial for the development of CSP technology due to the unstable and intermittent nature of solar energy availability. Over the past decade, phase change materials (PCM) have gained significant interest for CSP applications as a latent heat TES system. This comprehensive review provides an overview of the current state and future challenges of cutting-edge PCM based TES technologies for CSP application, including the functional parts and research progress in each part.
APPLIED THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Muhammad Imran Khan, Faisal Asfand, Sami G. Al-Ghamdi
Summary: A global transition towards more sustainable production and consumption systems is underway, and the transition in energy systems is particularly noticeable. Concentrated solar power (CSP) technologies are seen as one of the most promising ways to generate electric power in the coming decades. Efforts have been made to reduce the cost of CSP technologies, and there is a need to have a comprehensive understanding of the research and technological advancements in this field.
Review
Green & Sustainable Science & Technology
Muhammad Imran Khan, Faisal Asfand, Sami G. Al-Ghamdi
Summary: A global transition towards more sustainable systems of production and consumption is currently happening, with a primary focus on energy systems. Concentrated solar power technologies are seen as a promising way to generate electric power in the future, but one of the main challenges is to develop efficient and cost-effective heat transfer fluid and thermal energy storage systems. Solid particle receivers have gained interest in recent years due to their ability to overcome current working temperature limits. This comprehensive review provides insight into different technologies of particle receiver systems for concentrated solar power applications.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Chemistry, Physical
Muhammad Imran Khan, Sami G. Al-Ghamdi
Summary: The serious threat of climate change has prompted GCC countries to aggressively seek clean energy sources. Recently, these countries have announced carbon emission targets, with some aiming for net-zero emissions by 2050 or 2060. Governments and energy companies around the world are betting on hydrogen to lower emissions. However, there are obstacles to the adoption of a green hydrogen economy in Gulf countries, including high production costs, infrastructure and transportation issues, regulation, and demand. This study analyzes the obstacles and future prospects of hydrogen economy in the GCC region using SWOT analysis, concluding that while GCC countries have the potential to lead in hydrogen, they need to take risks to compete globally, and the growth of the hydrogen economy depends on external factors beyond their control.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Engineering, Environmental
Mohammad Ja'fari, Muhammad Imran Khan, Sami G. Al-Ghamdi, Artur J. Jaworski, Faisal Asfand
Summary: In energy intensive industries, the use of ORC technology for waste heat recovery can enhance energy efficiency, reduce carbon emissions, and provide a solution for energy saving in the iron and steel sector, contributing to the fight against climate change.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Lei Zhang, V Puneeth, Muhammad Ijaz Khan, Essam Roshdy El-Zahar, N. Manjunath, Nehad Ali Shah, Jae Dong Chung, Sami Ullah Khan, M. Imran Khan
Summary: This study investigates the bioconvection flow of tiny fluid carrying nanoparticles between two concentric cylinders and focuses on the contribution of Lorenz force to the bioconvection thermal transport of the particles. The results show that the flow velocity can be controlled externally through the magnetic field, and an increase in Schmidt numbers leads to higher nanoparticle concentration and motile density.
Article
Gastroenterology & Hepatology
Murk Niaz, Muhammad Arsalan Khan, Shah Muhammad, Abdaal Waseem Khan
Summary: Hepatic artery pseudoaneurysm (HAP) is a common complication after trauma, but it is rarely seen as a complication of pyogenic liver abscess. This article reports a case of a 29-year-old female patient who presented with abdominal pain, fever, and jaundice, and was diagnosed with pyogenic liver abscess complicated by left HAP causing hemobilia. The patient was successfully managed with endovascular coil embolization.
ACG CASE REPORTS JOURNAL
(2022)
Article
Psychology, Multidisciplinary
Muhammad Arsalan Khan, Omer Farooq Malik, Asif Shahzad
Summary: This study examines how social undermining affects employee creativity, and finds that interpersonal distrust and knowledge hiding partially mediate this relationship. The results show a significant negative association between social undermining and employee creativity.
BEHAVIORAL SCIENCES
(2022)
Article
Multidisciplinary Sciences
Yasir Qayyum Gill, Umer Abid, Muhammad Shafiq Irfan, Farhan Saeed, Abdul Shakoor, Ateeqah Firdaus
Summary: Wood polymer composites (WPCs) are a highly competitive type of hybrid composite materials with potential applications in automotive, furniture, and construction industry. This study fabricated PP-wood flour composites using melt blending extrusion, and characterized their chemical makeup, mechanical features, thermal stability, and environmental sustainability during machining. The research highlighted the increased stiffness of WPCs due to wood flour loading, as well as the reduced waste generation through drilling composites.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Mechanical
Willy Ank de Morais, Railson Bolsoni Falcao, Mario Boccalini Jr, Fernando Jose Gomes Landgraf
Summary: This study compares the fatigue behavior of bcc Nb-48 wt%Ti (Ti-36at%Nb) alloy parts processed by Laser Powder Bed Fusion (L-PBF) using two different types of powders (spherical powder produced by Plasma Atomization and irregularly shaped powder produced by Hydride-Dehydride). The results show that the fatigue behavior is similar for both powders, but the specimens produced from the Hydride-Dehydride powder have higher dispersed results. Fracture primarily occurs in the porosities near the machined sample surface, and the fatigue cracks propagate in a zigzag mode parallel to the L-PBF building direction.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Guoxi Jing, Shuai Sun, Teng Ma, Shubo Li, Tian Ma, Junchao Wei, Jianchao Pang
Summary: This study proposes a parameter identification method for predicting the TMF life of CGI materials used in cylinder heads. The study evaluates the TMF behavior of RuT450 material and successfully predicts its TMF life using multi-objective optimization. The results highlight the influence of plastic strain amplitude, temperature, and strain rate on the damage mechanism and life prediction.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Xin Zhang, Xu Li, Weipeng Xu, Kuidong Gao, Kao Jiang, Xinyu Wang, Hongxin Wei
Summary: Conical picks are commonly used in tunnel excavation and often experience high temperatures during the cutting process. This study investigated the influence of temperature on the wear of conical picks and proposed a method for measuring rock abrasiveness that takes into account the thermal effect. The experimental results showed that cooling liquid reduced the maximum temperature and the mean mass loss of the conical pick. Additionally, the study examined the characteristics of oxygen and found evidence of peeling, cracking, and oxidation on the grinding rod used for rock abrasiveness measurement.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Vivek Srivastava, Deependra Singh, A. G. Rao, V. P. Deshmukh
Summary: Engine gear failures are a significant concern in various industries. Investigating each gear failure and determining the root cause is important for preventing future failures. This study used experimental and numerical analysis techniques to investigate the premature failure of a flywheel gear in a marine diesel engine. The findings revealed that the gear failed due to overload stresses caused by overload torque generated from sudden inertial thrust in the internal combustionengine.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Jun Zhang, Weidong Liu, Feilong Liu, Zhiqiang Yang, Jinfang Peng, Minhao Zhu
Summary: During a major overhaul of an aeroengine, a cracked stator vane of the low-pressure compressor was discovered, with the crack originating from a corrosion pit located on the arc transition between the leading edge and the upper edge plate. The fracture surface exhibited signs of fatigue cracks, indicating a pit-related fatigue crack. Metallographic examination revealed that most corrosion pits were distributed beneath the bulging or peeling paint layer on the leading edge and the concave side. Identification of the corrosion products showed the presence of sulfate and alumina, suggesting atmospheric corrosion as a likely cause for the cracked stator vane.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Juan Jose Jimenez de Cisneros Fonfria, Ester Olmeda, Susana Sanz, Maria Garrosa, Vicente Diaz
Summary: Energy absorbing devices in vehicles can partially transform impact energy and protect passengers. In this paper, the failure analysis of the underframe crumple zone in a train car was conducted through finite element simulations, showing that the component acted properly after the impact.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Fengqi Zhang, Gang Luo, Haiyang Zhang, Peihong Cong, Lulu Liu, Wei Chen
Summary: In this study, a predictive model for bird strike trajectory was developed based on the quasi-linear viscoelastic model. By combining simulation analysis under multiple conditions, the model reproduced the trajectory change law in low and medium speed bird impact experiments.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
S. M. de Gouveia, L. de Abreu Correa, D. B. Teles, M. Oliveira, T. G. R. Clarke
Summary: Emergency Shutdown Valves (EDSVs) are used in industrial applications to interrupt fluid flow during hazardous events. The damage to the valve seats can be detected by analyzing the pressure and torque data. This study compared three processing options and found that evaluating the complete signature with a Gradient Boosting Classifier algorithm is the most effective strategy.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Xinyan Jin, Kai Wang, Hongwei Qian
Summary: This study investigated the root cause of an abnormal premature groove-clogging failure on a sink roll in a hot-dip galvanizing line. It was found that the failure was caused by the buildup of a large amount of Fe2Al5Znx dross in the grooves, and the key factor was the control of Tstrip.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Zhiqiang Li, Jie Li, Cen Li, Xiaodong Xie, Zhiyong Yang
Summary: In this study, the microstructure evolution of the material in the hot spot area of the high-speed train brake disc was observed and the mechanism of mechanical property degradation was obtained through tensile tests. The research results provide guidance for crack damage identification of the brake disc and condition-based maintenance.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Lijia Luo, Yincheng Wang, Wei Chen, Zuming Zhao, Wenfei Chen, Shiyi Bao
Summary: Tube-to-tube impact wear is a significant factor in the failure of alloy 690 tubes in nuclear steam generators. This paper investigates the wear damage mechanism and detection method of alloy 690 tubes under tube-to-tube impact loads. The results reveal the wear damage mechanism through analysis of macro and micro morphologies as well as metallographic structures. A nonlinear ultrasonic wave mixing method is proposed for damage detection and a detection device is developed to implement this method. Experimental results indicate that the damage mode of tube-to-tube impact wear varies with impact load and cycle number, and the nonlinear modulation index is effective in assessing the damage degree of alloy 690 tubes.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Xing-Ju Yang, Feng Lin, Xu Du, Lu Qiu
Summary: This paper proposes a novel method of improving the progressive collapse resistance of RC frame structures by adding locally debonded kinked steel plates (KPs). Experimental tests and finite element analysis reveal that the addition of KPs significantly enhances the ultimate resistance and deformability of the beam-slab substructures. The mechanism of resistance improvement is explained, and an analytical model is developed for predicting the ultimate resistance of the structures.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Xiaohe Wang, Zengqiang Cao
Summary: This paper presents a dynamic installation (DI) method based on electromagnetic force to reduce damage to composite laminates and improve joint performance. The study shows that DI can effectively decrease installation resistance, reduce severe damage to laminates, and improve stress distribution in the joint.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Jitong Cui, Yingying Kong, Cuiwei Liu, Baoping Cai, Faisal Khan, Yuxing Li
Summary: This paper presents a method for quantifying the failure probability of hydrogen doped pipelines and utilizes Bayesian network for quantitative calculation. The results show that this method can more accurately assess the failure probability of hydrogen doped pipelines and provide a decision basis for preventing failure accidents.
ENGINEERING FAILURE ANALYSIS
(2024)
Article
Engineering, Mechanical
Yiping Jiang, Maoru Chi, Jungang Yang, Liangcheng Dai, Yuchen Xie, Zhaotuan Guo
Summary: This article investigates and simulates the derailment of empty freight trains at the switch section of a turnout in the diverging route, and proposes preventive measures. The results show that the derailment is caused by the combined effect of various factors, and reducing the longitudinal coupler force and the wheel rail friction coefficient can decrease the possibility of derailment. Additionally, installing a guard rail in front of the turnout can effectively prevent derailment.
ENGINEERING FAILURE ANALYSIS
(2024)