Article
Mathematics, Interdisciplinary Applications
Sajjad Beigmoradi
Summary: In this study, low-frequency acoustic energy was used to provide motion in abrasive grits for polishing high carbon steel. The effects of wave shape and frequency on particle kinematics and contact forces were investigated using the discrete element method. The shape, size, and distribution of particles were determined experimentally and verified by simulations. The most efficient condition for polishing was computed using numerical simulations, and roughness and microscopic studies confirmed the significant improvement in the surface quality of the workpiece.
COMPUTATIONAL PARTICLE MECHANICS
(2022)
Article
Engineering, Multidisciplinary
Shuo Wang, Xuanting Liu, Tianjian Tong, Zihe Xu, Yunhai Ma
Summary: In this study, a bionic design was used to reduce wear during the tillage process. The bionic ribbed sweep (BRS) was designed by combining a ribbed unit with a conventional sweep (CS). By simulating and optimizing BRSs with different parameters, it was found that a protective layer on the sweep surface could effectively reduce wear. An optimal solution was obtained through parameter optimization, resulting in reduced wear loss in wear tests and simulations. It was concluded that creating a protective layer by optimizing the parameters of the ribbed unit was feasible in reducing wear during tillage.
Article
Engineering, Mechanical
A. Quacquarelli, G. Mollon, T. Commeau, N. Fillot
Summary: This passage mentions the wear problem caused by hard debris or abrasive slurries between moving surfaces, which is a major issue in the industrial field. Furthermore, it introduces a case study on the wear of diamond tools used to cut stones, which involves specific tribological interactions. The understanding of the wear process involving the metal matrix and the investigation of the relationship between wear evolution and metal surface roughness are also highlighted.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Egidijus Katinas, Rostilav Choteborsky
Summary: Agricultural equipment operates under high stress conditions, with chisels working at a depth of 30 cm and a maximum speed of 12 km/h. Due to unpredictable soil conditions, chisel tines experience high wear losses, leading to time and cost expenses. Wear resistance and agronomical requirements are the main criteria for producers, and the discrete element method is used to simulate soil properties and wear intensity.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY
(2022)
Article
Engineering, Multidisciplinary
Z. Hu, Z. X. Yang, N. Guo, Y. D. Zhang
Summary: This study investigates seepage-induced suffusion and slope instability using a hierarchical multiscale finite-discrete element method. The results show that a shear band is initiated from the slope toe and gradually extends to the crest. The study also found that a higher critical hydraulic gradient can slow down the process of suffusion and slope failure.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2022)
Article
Engineering, Mechanical
Jinyang Song, Conglin Dong, Xiuqin Bai, Chengqing Yuan, Yuhang Wu
Summary: Abrasive particles can cause wear and failure of rotary vane seals. Analyzing the tribological information during friction can reveal the wear mechanisms and provide a foundation for extending the service life and carrying out fault diagnosis prediction.
TRIBOLOGY TRANSACTIONS
(2023)
Article
Automation & Control Systems
Liaoyuan Wang, Yuli Sun, Fayu Chen, Guiguan Zhang, Yebin Sun, Dunwen Zuo
Summary: This work aims to reveal the action mechanism of multi-abrasive particles in finishing the complex inner cavity. The body force function of particles and the particle-wall contact model were developed based on the theories of the magnetic field and the discrete element method (DEM). The influences of abrasive particle size, magnetic pole speed, and processing clearance on the finishing quality were simulated and verified by experiments. The result can provide a practical research idea for polishing the inner cavity of special-shaped parts.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Engineering, Chemical
Fangping Ye, Yuezhang Qiang, Weijie Jiang, Xiang Fu
Summary: This study investigated the impact forces of different granular materials on the wear process of transfer chutes using the DEM-FEM method. The results revealed a significant correlation between belt speed, chute inclination angle, and types of granular materials with the wear, stress-strain, and cumulative contact energy of the transfer chute.
Article
Polymer Science
Deshang Han, Kongshuo Wang, Chuansheng Wang, Wenwen Han
Summary: Studies show that the dispersion of silica in the mixing process is an important factor affecting the wear of the mixing chamber. The addition of silane coupling agents can improve the dispersion of silica and reduce the metal wear caused by rubber. The study also found that abrasive wear is the primary wear mechanism, but corrosive wear is also significant.
Article
Materials Science, Ceramics
Tanay Rudra Paul, Manas Kumar Mondal, Manab Mallik
Summary: The addition of SiCw decreases the coefficient of friction, specific wear rate, and surface roughness of ZrB2-MoSi2 composites, while enhancing wear resistance. The tribological performance of the composites is influenced by experimental conditions, with the damage tolerance limits varying for different applied loads. Wear mechanisms shift from delamination, cracking, and grain pull out at medium loads to grain boundary fracture at higher loads.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Engineering, Mechanical
Juan Sandoval, Aaqib Ali, Patrick Kwon, David Stephenson, Yang Guo
Summary: This study investigates the detailed evolution of tool wear during turning compacted graphite iron (CGI) using coated carbide tool under conventional machining (CM) and modulation-assisted machining (MAM) in dry and lubricated conditions at a speed of 250 m/min. MAM shows significant reduction in tool wear compared to CM turning. MAM dry turning exhibits lower tool wear than MAM lubricated turning due to the formation of SiO2 deposition layer on the tool flank and preservation of the coatings on the cutting edge.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
C. C. Viafara, B. Valenzuela, F. Martinez, J. J. Penagos
Summary: Worn surfaces of chute linings in an iron ore plant were analyzed under impact and sliding contact conditions. A new method using computer vision tools was developed to analyze wear surfaces. The machine learning model created could recognize, classify, and estimate the affected areas of wear mechanisms on the linings.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Lukas Widder, Harald Rojacz, Karl Adam, Andreas Kuttner, Markus Varga
Summary: Material processing of loose goods is commonly found in heavy industries like steel production. However, the wear protection materials used in transportation, relocation, and other processing routines are often suboptimal due to a lack of understanding of the prevailing loads and wear mechanisms. This study aims to identify wear mechanisms in different applications and evaluate the suitability of wear solutions. Lab experiments were conducted to simulate various forms of abrasive and impact-abrasive wear, using ten common wear protection materials. Based on the wear results, a selection map was created to guide the choice of wear protection solutions for specific load conditions in material handling, increasing sustainability.
Article
Computer Science, Interdisciplinary Applications
Yongqian Qu, Degao Zou, Jingmao Liu, Zhikai Yang, Kai Chen
Summary: A 2D polygonal DEM-FEM interface coupling analysis program is developed to study the failure analysis of a 100 m high CFRD under strong earthquake. The results indicate that the initial seismic failure of CFRD occurs at the crest zone, and the implementation of anti-seismic measures can significantly reduce the seismic damage.
COMPUTERS AND GEOTECHNICS
(2022)
Article
Engineering, Mechanical
Shaochuan Li, Guijian Xiao, Benqiang Chen, Xiaoqin Zhuo, Zeyong Zhao, Yun Huang
Summary: The morphology and wear process of abrasive belt grains directly affect the grinding surface quality and service performance of titanium alloys. The research analyzed the surface characteristics and fatigue failure mechanism of TC17 samples before and after abrasive belt wear. The results showed that the worn zirconium corundum abrasive belt reduces grinding surface roughness and strengthens surface mechanical properties, thereby promoting fatigue crack initiation and improving fatigue life. In contrast, the wear of electroplated diamond abrasive belts leads to the formation of heterogeneous ablative layers, which significantly reduces surface fatigue performance.
ENGINEERING FAILURE ANALYSIS
(2022)
Review
Computer Science, Interdisciplinary Applications
J. M. Rodriguez, J. M. Carbonell, P. Jonsen
ARCHIVES OF COMPUTATIONAL METHODS IN ENGINEERING
(2020)
Article
Engineering, Chemical
Par Jonsen, Samuel Hammarberg, Bertil I. Palsson, Goran Lindkvist
MINERALS ENGINEERING
(2019)
Article
Mechanics
D. Frometa, S. Parareda, A. Lara, S. Molas, D. Casellas, P. Jonsen, J. Calvo
ENGINEERING FRACTURE MECHANICS
(2020)
Article
Engineering, Chemical
Simon Larsson, Bertil Palsson, Mehdi Parian, Par Jonsen
MINERALS ENGINEERING
(2020)
Article
Mathematics, Interdisciplinary Applications
Simon Larsson, Juan Manuel Rodriguez Prieto, Gustaf Gustafsson, Hans-Ake Haggblad, Par Jonsen
Summary: The study presents a numerical tool for modeling dense transient granular material flow, validated against experiments. Granular materials are modeled as continuous materials using two different constitutive models. The numerical model accurately predicts the in-plane velocity field during the collapse of granular material columns, in agreement with experimental results.
COMPUTATIONAL PARTICLE MECHANICS
(2021)
Article
Chemistry, Physical
Juan Manuel Rodriguez, Simon Larsson, Josep Maria Carbonell, Paer Jonsen
Article
Metallurgy & Metallurgical Engineering
Joerg Volpp, Par Jonsen, Anandkumar Ramasamy, Bert Kalfsbeek
Summary: This study presents a method of multi-layer welding high-strength steel to increase the weld metal toughness, and promising interlocking microstructures were found after multiple tempering.
WELDING IN THE WORLD
(2021)
Article
Geochemistry & Geophysics
Simon Larsson, Juan Manuel Rodriguez Prieto, Hannu Heiskari, Par Jonsen
Summary: Modeling wet stirred media mill processes involves complex multiphysics interactions, which are successfully tackled in this study by developing a multiphysics model for an HIG5 pilot vertical stirred media mill. The model uses a particle-based coupled solver approach and loose two-way couplings between different constituents. Numerical results show good agreement with experimental measurements, predicting mill power consumption and dynamics of grinding media and fluid accurately.
Article
Chemistry, Physical
Samuel Hammarberg, Jorgen Kajberg, Simon Larsson, Ramin Moshfegh, Par Jonsen
Summary: This study presents a new method for obtaining the out-of-plane properties of micro-sandwich materials and highlights their importance and application prospects in the automotive industry. By designing test tools and using digital image correlation for analysis, it is found that the method is reliable and repeatable, providing better data support for manufacturing and simulation.
Article
Geochemistry & Geophysics
Andreas Svanberg, Simon Larsson, Rikard Maki, Par Jonsen
Summary: The study focuses on predicting wear development in full-scale mining applications under harsh conditions and aims to provide optimization solutions for wear issues in industrial processes through hardware wear research. After calibration with full-scale experiments, simulations show excellent agreement with experimental results in terms of locations and magnitudes of wear.
Article
Chemistry, Physical
Olle Sandin, Par Jonsen, David Frometa, Daniel Casellas
Summary: This article discusses the accuracy of fracture modelling with strain-driven ductile fracture models when introducing damage of high strength sheet steel. The study found that pre-damaged specimens showed less correlation and there is a need to extend the model to consider fracture mechanisms at the crack tip.
Article
Materials Science, Multidisciplinary
Christer Stenstrom, Kjell Eriksson, Florin Bobaru, Stefan Golling, Paer Jonsen
Summary: This work introduces the essential work of fracture (EWF) method for a peridynamic (PD) material model to characterize fracture toughness of ductile materials. An analytical derivation for the path-independence of the PD J-integral is provided, followed by computation of classical J-integral and PD J-integral on analytical crack problems. A new adaptive bond stiffness calibration and modified bond-damage model with gradual softening are proposed to represent nonlinear elastic behavior. The PD model is applied to two different materials, showing good agreement with experimental EWF values for higher-ductility steel.
INTERNATIONAL JOURNAL OF FRACTURE
(2023)
Article
Mathematics, Interdisciplinary Applications
Andreas Svanberg, Simon Larsson, Rikard Maki, Par Jonsen
Summary: This work developed a full-scale numerical model to optimize the loading process in mining, using rigid finite elements and discrete element method to model copper ore granular material and rope shovel. The model calibration was done by analyzing waste rock pile angles, and validation was performed with in situ experimental data. The influence of loading variables such as bucket rake angle, velocity, and position from the pile were investigated.
COMPUTATIONAL PARTICLE MECHANICS
(2021)
Article
Multidisciplinary Sciences
Samuel Hammarberg, Simon Larsson, Jorgen Kajberg, Par Jonsen
SN APPLIED SCIENCES
(2020)
Article
Multidisciplinary Sciences
Samuel Hammarberg, Jorgen Kajberg, Simon Larsson, Par Jonsen
SN APPLIED SCIENCES
(2020)
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)
