Article
Engineering, Mechanical
Emile S. Greenhalgh, Carla Canturri, Tomas J. Katafiasz
Summary: This study investigated the damage processes associated with bearing failure of composite to metal hybrid joints, tested under different drilling conditions. The findings showed how drilling damage affected the development of both longitudinal splitting and out-of-plane fibre microbuckling, offering potential routes to improve bearing performance.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Engineering, Multidisciplinary
Christopher Meninno, Vijaya Chalivendra
Summary: The study investigated the impact of different laminate orientations on mode-I and mode-II fracture toughness, as well as the correlation between fracture toughness values and scanning electron microscopy images. The results showed that C-0-G-90 composites exhibited higher mode-I fracture toughness, while G-0-C-90 composites showed higher mode-II fracture toughness. The electrical response was found to be closely related to crack dynamics.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Engineering, Manufacturing
Roberto Ferreira Motta Jr, Rene Alderliesten, Dimitrios Zarouchas, Marcos Yutaka Shiino, Maria Odila Hilario Cioffi, Herman Jacobus Cornelis Voorwald
Summary: This research investigates strain energy release within fatigue load cycle using acoustic emission and formulates the correlation between measured strain energy release and acoustic emission energy. The distribution of strain energy release within the loading cycle indicates activation of different damage mechanisms at different energy thresholds. The presence of multiple energy thresholds suggests distinct resistances to damage propagation depending on the applied loading cycle.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Composites
Yoran Geboes, Amalia Katalagarianakis, Jeroen Soete, Jan Ivens, Yentl Swolfs
Summary: Translaminar fracture toughness is a key property that determines the damage tolerance and notch sensitivity of fibre-reinforced composites. This study found that using PAR and PBO fibers can significantly improve the translaminar fracture toughness of composite materials, while the performance of aramid fiber is lackluster in comparison.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Mechanical
M. Rezaei, A. Zarei-Hanzaki, A. S. Anousheh, H. R. Abedi, F. Pahlevani, R. Hossain, V Sahajwalla, F. Berto
Summary: This study reveals the damage mechanisms during compressive dwell-fatigue of beta-annealed Ti-6242S alloy, including shearing/displacement of lamellar phases, stacking fault nodes formation, and formation of coarse grains as key factors. These evolutions are interconnected with microstructure evolution and can be justified by providing proper conditions at maximum applied load.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Materials Science, Multidisciplinary
Joel T. Clemmer, Kevin N. Long, Judith A. Brown
Summary: Damage in polymer-filled granular composites can occur before material failure during mechanical loading. These damages can significantly affect the material's mesostructure and have far reaching effects on mechanical properties and performance. This study assesses experimental knowledge and proposes a simulation framework to investigate the effects of interfacial strength and glass transition temperature on the material's mechanical response. The simulations identify key trends and provide insights into potential origins for changes in mechanical behavior.
MECHANICS OF MATERIALS
(2023)
Article
Engineering, Mechanical
Aman Arora, Aanchna Sharma, Mohit Singh, Dhiraj K. Mahajan, Vinod Kushvaha
Summary: This study presents an extensive experiment on the fatigue response of glass-filled epoxy composites under cyclic loading. Rod-shaped particulate glass fibers with volume fractions of 0%, 5%, 10%, and 15% are used to reinforce the epoxy matrix. The mechanical behavior of the resulting composite is examined under monotonic tensile loading and tension-tension cyclic fatigue loading. The study utilizes in-situ low cycle fatigue testing to investigate the damage mechanisms leading to crack initiation and propagation.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Materials Science, Composites
Dounia Boushab, Hasnaa Ouidadi, Aniket Mote, Matthew Priddy, Santanu Kundu, Charles U. U. Pittman Jr, Jaime Grunlan, Qingsheng Wang, Thomas Lacy Jr
Summary: Aircraft crashes often lead to fire incidents which can mask or destroy crucial failure features for accident reconstruction. This study conducted vertical flame tests on mechanically failed graphite/epoxy specimens to understand the fire-induced damage and degradation. The results showed that the stacking sequence of the specimens, fracture surface morphology, and available free surface area significantly influenced the thermal degradation and damage. The presence of char layers impeded heat conduction and oxygen transfer, resulting in less thermal damage to underlying plies.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
M. A. Umarfarooq, P. S. Shivakumar Gouda, N. R. Banapurmath, M. I. Kittur, Tabrej Khan, Bisma Parveez, Tamer A. Sebaey, Irfan Anjum Badruddin
Summary: Failure by delamination is a significant concern in laminated composites, as it leads to degradation of stiffness and potential structural failure. Knowledge of delamination resistance and influencing factors is crucial for material selection. This study investigates the effect of fiber hybridization and post-curing on the interlaminar fracture toughness of Glass/Carbon/Epoxy composites. The hybrid GCE laminates exhibit higher fracture toughness, attributed to the synergistic effect of Carbon and Glass fibers. Post-curing at 180 degrees C also improves fracture toughness.
POLYMER COMPOSITES
(2023)
Article
Mechanics
Farshad Kazemi, Ramin Hashemi, Seyed Ali Niknam
Summary: In this study, the forming limit diagram of AA5754/polyethylene/AA5754 sandwich composites was investigated experimentally and numerically. The effects of variation in thickness on the core and skin layers were examined numerically. The results showed that these sandwich composites can be used as a substitute for aluminum sheets.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2022)
Article
Materials Science, Composites
Vigneshwaran Gnanakkan Samuel Veerakumar, Balasivanandha Prabu Shanmugavel, Sivasankaran Harish
Summary: This study explored the effects of functionalised graphene nanoplatelets and functionalised glass fibers on the mechanical properties of GFRP composites, showing that depositing f-GnPs on f-Fibers can significantly enhance tensile strength, while dispersing f-GnPs in the matrix can improve fracture toughness.
APPLIED COMPOSITE MATERIALS
(2021)
Article
Materials Science, Composites
Mark Luke, Marcia A. Cooper
Summary: This paper investigates the impact of particle system on the compression behavior and damage accumulation of high solids loading polymer-particle composites. It is found that particle shape has a larger effect on low-strain compression behavior than particle strength in these composites. Damage is observed to initiate at the sample boundaries and an unsupervised X-ray image segmentation method shows good accuracy in identifying the spatial distribution of ingredients.
APPLIED COMPOSITE MATERIALS
(2023)
Article
Materials Science, Characterization & Testing
Maksim Nikonovich, Joana F. S. Costa, Ana C. Fonseca, Amilcar Ramalho, Nazanin Emami
Summary: The thermal, thermo-mechanical, and mechanical properties of four commercially available poly-etheretherketones (PEEK) based materials were studied. Different modifications and reinforcements, such as carbon fibers, graphite, and PTFE, were applied to the PEEK matrix. The addition of carbon fibers improved thermal stability and mechanical properties, while matrix modification had a minimal impact on thermal stability but decreased mechanical properties. At low temperatures (-100°C and -195°C), the mechanical properties of the neat polymers were enhanced, but the addition of fillers hindered the rise of impact strength. Finally, the scratch test showed that unfilled PEEK had superior performance compared to filled PEEK at different load ranges.
Article
Materials Science, Multidisciplinary
Yuanyuan Li, Hongliang He, Qiming Wang, Lu Zhang, Yin Yu, Duanwei He
Summary: The study highlights the advantages of bioinspired diamond composites in reducing damage and improving dynamic strength. By mimicking the arrangement of nacre in mollusk shells, significant crack deflection was achieved, causing minimal damage to the diamond bricks.
MECHANICS OF MATERIALS
(2022)
Article
Polymer Science
Maria Stratigaki, Christoph Baumann, Robert Goestl
Summary: Brittle fracture is a common issue in glassy polymers, but can be mitigated with the use of fillers. Researchers have now used optical force probes to visualize the mechanical behavior of second-phase inclusions in polymer composites, providing new insights into fracture events.
Article
Energy & Fuels
Tayra Rodrigues Brazil, Maraisa Goncalves, Erick Gabriel Ribeiro dos Anjos, Mauro Santos de Oliveira Junior, Mirabel Cerqueira Rezende
Summary: This study describes the production of activated carbon using microwave pyrolysis and lignocellulosic waste, which has the advantages of energy-saving, cost reduction, and improved adsorption capacity.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Polymer Science
Erick Gabriel Ribeiro dos Anjos, Juliano Marini, Newton Adriano Santos Gomes, Mirabel Cerqueira Rezende, Fabio Roberto Passador
Summary: Hybrid nanocomposites of graphene nanoplates (GNP) and multi-wall carbon nanotubes (MWCNT) show promising potential for applications in the electronics industry, as they exhibit synergistic effects and improve the properties of polymer matrices.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Food Science & Technology
Angelica Franzol, Thais Mancini Banin, Tayra Rodrigues Brazil, Mirabel Cerqueira Rezende
Summary: This study presents a practical tool for predicting consumer acceptance of cosmetic emulsions based on an artificial neural network model and experimental textural data. The correlation between predictive simulations and sensory tests demonstrates the reliability of this tool, making it a competitive advantage in the development of new cosmetic emulsions.
JOURNAL OF SENSORY STUDIES
(2022)
Review
Materials Science, Composites
Larissa Stieven Montagna, Guilherme Ferreira de Melo Morgado, Ana Paula Lemes, Fabio Roberto Passador, Mirabel Cerqueira Rezende
Summary: This article reviews the methodologies and technologies for recycling and reusing carbon fiber reinforced composites and explores their potential applications. With their high added value, attention should be paid to the possible recycling and closed-loop economy of these materials.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Thais Peres Zanetine Marques, Bruno Mikio Fujiwara Marques, Geraldo Mauricio Candido, Mirabel Cerqueira Rezende
Summary: This study presents a numerical and experimental analysis on the effect of staggered butt joints on the tensile mechanical behavior of woven fabric reinforced composites. The experimental results showed that a staggered distance of 15mm had the best mechanical performance. SEM analysis revealed similar fractographic aspects on the fracture surface of specimens with different staggered distances, and the numerical simulation results agreed well with the experimental ones.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Mechanical
Thais Peres Zantine Marques, Bruno Mikio Fujiwara Marques, Geraldo Mauricio Candido, Mirabel Cerqueira Rezende
Summary: This study investigates the influence of different geometric arrangements of butt joint on the mechanical and fracture behavior of carbon/epoxy laminates. The experimental results demonstrate a reduction in tensile failure load due to the presence of the discontinuity in the reinforcement. However, the different staggering methods of the butt joints do not significantly affect the tensile mechanical behavior of the laminates. Finite element analysis and SEM analyses confirm the experimental findings.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Materials Science, Composites
Erick Gr Dos Anjos, Nayara K. Moura, Eduardo Antonelli, Mauricio R. Baldan, Newton As Gomes, Natalia F. Braga, Adelina P. Santos, Mirabel C. Rezende, Luiz A. Pessan, Fabio R. Passador
Summary: This study evaluated the effect of multi-wall carbon nanotubes (MWCNT) on polycarbonate/acrylonitrile butadiene styrene/graphene-related materials (GRM) nanocomposites. The electrical behavior of the nanocomposites was found to be closely related to the lateral size, thickness, and production method of the GRM. The use of graphene nanoplatelets with the smallest lateral size and thickness, and the addition of 1.5 wt% MWCNT, achieved the required electromagnetic interference shielding effectiveness (EMI SE) for commercial applications.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
T. C. Silva, D. V. O. Moraes, G. F. M. Morgado, V. O. Goncalves, D. H. S. Costa, T. P. Z. Marques, F. R. Passador, M. C. Rezende
Summary: This study evaluated the influence of poly(etherimide) (PEI) on the fatigue life of carbon fiber reinforced thermoplastic composites, and characterized the mechanical properties through static loading and cyclic fatigue tests. The fractographic study using scanning electron microscopy confirmed the good quality of carbon/PEI composites with strong fiber-matrix adhesion, and revealed different fracture behaviors under different loads.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Bruno Ribeiro, Newton Adriano Santos Gomes, Mauricio Baldan, Mirabel Cerqueira Rezende
Summary: Macroscale carbon nanotube layers were inserted between glass fiber/epoxy prepregs to evaluate their electromagnetic interference shielding effectiveness in the X band range. The optimized buckypaper structure showed high shielding performance and is suitable for large-scale manufacturing of EMI shielding materials with broad applications in electronics.
ELECTRONIC MATERIALS LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Felipe Carlos dos Reis, Newton Adriano Santos Gomes, Mauricio Ribeiro Baldan, Bruno Ribeiro, Mirabel Cerqueira Rezende
Summary: Due to their remarkable mechanical and electrical properties, carbon nanotubes (CNTs) and their composites are great candidates for materials with improved electromagnetic and electrical properties. The addition of magnetic particles, such as carbonyl iron and ferrites, can further enhance the energy losses and minimize microwave reflections. This study investigates the influence of carbonyl iron and magnetite ferrite on the electromagnetic behavior of carbon nanotube buckypaper (BP) reinforced epoxy composites in the frequency range of 8.2-12.4 GHz. The results show that the composites with carbonyl iron and magnetite ferrite exhibit reduced reflection losses and improved absorption properties. When carbon nanotube buckypaper is added to the carbonyl iron composites, the absorption properties are further enhanced. The ternary hybrid composites with different concentrations of magnetic fillers show increased absorption properties, attributed to the synergistic effect between the magnetic particles and carbon nanotube buckypaper on the shielding properties of the composites.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Polymer Science
Erick Gabriel Ribeiro dos Anjos, Tayra Rodrigues Brazil, Guilherme Ferreira de Melo Morgado, Larissa Stieven Montagna, Natalia Ferreira Braga, Eduardo Antonelli, Juliano Marini, Mirabel Cerqueira Rezende, Fabio Roberto Passador
Summary: This study evaluated the use of two different aspect ratios (158 and 600) of multi-wall carbon nanotubes (MWCNTs) as nanofillers to improve the electrical, electromagnetic, and mechanical properties of polycarbonate (PC) melt mixed nanocomposites. The MWCNTs with a smaller aspect ratio showed better dispersion and improved electrical and electromagnetic properties in the PC matrix. A content of 2.0 wt% was found to be the optimum for both types of MWCNTs, resulting in an AC electrical conductivity greater than 10(-4) S/cm and higher EMI SE values of 14 dB for the smaller aspect ratio MWCNT and 11 dB for the larger aspect ratio MWCNT.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Chemistry, Applied
Thais Aline Prado Mendonca, Tayra Rodrigues Brazil, Mirabel Cerqueira Rezende, Maraisa Goncalves
Summary: There is concern about the increased by-products generated by the high demand for biodiesel. This study investigated the preparation of activated carbons from biodiesel waste (crude glycerin) using chemical activation and microwaves as the heat source. The results showed that the activation time and impregnation ratio were critical factors in determining the specific surface area and pore volume of the activated carbons. Crude glycerin was found to be a promising raw material for preparing activated carbons using microwaves.
JOURNAL OF POROUS MATERIALS
(2023)
Article
Engineering, Chemical
Isabela L. R. Cintra, Mauricio R. Baldan, Erick G. R. Anjos, Thais F. Silva, Lilia M. Guerrini, Mirabel C. Rezende, Edson C. Botelho
Summary: Blankets based on blends of PAN/lignin were processed via electrospinning and then thermally treated to produce carbon nanofiber samples. The best stabilization and carbonization parameters were determined through analysis techniques such as DSC, TGA, SEM, and FT-IR. The results showed the feasibility of producing carbon blankets but with low carbon yield and a decrease in fiber diameter. Characterization of the carbonized blankets included electrical conductivity, chemical structure, crystallographic ordering, and morphology analysis.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Polymer Science
Marcel Yuzo Kondo, Larissa Stieven Montagna, Guilherme Ferreira De Melo Morgado, Andre Luiz Guimaraes De Castilho, Larissa Anne Pereira Dos Santos Batista, Edson Cocchieri Botelho, Michelle Leali Costa, Fabio Roberto Passador, Mirabel Cerqueira Rezende, Marcos Valerio Ribeiro
Summary: This review manuscript summarizes the applications of polyamide-based materials in the manufacture of vehicle parts, discussing their processing, thermal properties, crystallization, challenges in machining, and recyclability. The focus is on polyamide 6, polyamide 66, and polyamide 12, as well as their composites reinforced with fiberglass and carbon fiber, as potential alternative materials for the automotive industry.
POLIMEROS-CIENCIA E TECNOLOGIA
(2022)
Article
Materials Science, Multidisciplinary
Ricardo Ritter de Souza Barnasky, Juliana Cristina Frankowiak, Carlos Vinicios Opelt, Luiz Antonio Ferreira Coelho
Summary: Percolation threshold is an important phenomenon to consider in the production of nanocomposites, as properties tend to decrease near this region. In this study, epoxy matrix nanocomposites with different volume fractions of multi-walled carbon nanotubes were produced and characterized for their electrical, thermal, and mechanical properties. Digital image correlation (DIC) was used to measure strain in the nanocomposites and revealed a change in behavior near the percolation threshold.
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS
(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)
