Article
Materials Science, Multidisciplinary
Hongmin Ju, Shiwei Zhuo, Jing Liu, Zirui Chen, Huijie Cui, Yanli Wang, Shilei Li
Summary: The effect of thermal aging on microstructural evolution and mechanical behavior was studied using advanced instrumental analysis. The microstructure in the coarse-grained heat-affected zone transformed from martensite to martensite/bainite mixture. The micro-hardness in this zone showed a positive correlation with thermal aging time due to changes in microstructure and increased number of M23C6 precipitates. The tensile strength and elongation of dissimilar metal welds also increased with thermal aging time. However, fracture occurred on the Alloy 152 side and exhibited a ductile fracture mode.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Multidisciplinary
Jianfeng Mao, Youquan Cai, Chi Cao, Mengda Hua, Limin Xie, Mingya Chen, Dasheng Wang
Summary: This study investigated the high-temperature mechanical properties and creep behaviors of 16MND5 steel after thermal aging. The results showed that the steel's yield stress and ultimate tensile strength decreased, and its creep rupture time was shortened after thermal aging. Microstructure analysis revealed changes in the grain structure after thermal aging. Prediction models for creep life provided satisfactory results within tolerance limits.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2023)
Article
Materials Science, Multidisciplinary
Sandra Baltic, Mohammad Zhian Asadzadeh, Patrick Hammer, Julien Magnien, Hans-Peter Ganser, Thomas Antretter, Rene Hammer
Summary: This study introduces a novel calibration methodology that combines finite element modelling (FEM) and artificial neural network (ANN) using a single specimen geometry. Results show that this approach accurately describes material parameters and predicts experimental outcomes.
MATERIALS & DESIGN
(2021)
Article
Computer Science, Artificial Intelligence
Feng Sun, Gongnan Xie, Shulei Li
Summary: This study investigates the flow of supercritical CO2 in tubes and its potential applications in energy conversion systems. By using a GA-BP model in MATLAB software, the performance prediction accuracy is improved, and the effectiveness of the model in predicting heat transfer behaviors is validated.
APPLIED SOFT COMPUTING
(2021)
Article
Mechanics
Zheng Liu, Xin Wang, Ronald E. Miller, Jiaqi Hu, Xu Chen
Summary: Research on the fracture properties of 16MND5 steel under different constraint conditions showed that crack depth and specimen thickness have a significant impact on fracture properties. This study developed constraint dependent R-curves and initiation fracture toughness for the steel, as well as a new methodology to quantify the 3D constraint effect.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Materials Science, Textiles
Xiaohan Liu, Miao Tian, Yunyi Wang, Yun Su, Jun Li
Summary: The performance of firefighters' clothing deteriorates due to various exposures, and predicting its service life before decommissioning is crucial. This study introduced a model to predict the tensile strength of flame-retardant fabrics under fire exposure, with the artificial neural network (ANN) model outperforming the multiple linear regression (MLR) method in accuracy. Factors like fabric backside temperature, glass transition temperature, and degradation temperature further improved the prediction accuracy of the ANN model.
TEXTILE RESEARCH JOURNAL
(2021)
Article
Energy & Fuels
Andac Batur Colak
Summary: This study investigated the impact of the number of neurons on the predictive performance of artificial neural networks using experimental data. The results showed that increasing the number of neurons could improve performance, but adding too many neurons does not necessarily enhance predictive capabilities.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Mechanics
Hongchun Shang, Songchen Wang, Liucheng Zhou, Yanshan Lou
Summary: This study comprehensively investigates the coupled effects of electrical pulse, temperature, strain rate, and strain on the flow behavior and ductile fracture of complex components made of 5182-O aluminum alloy. Experimental tests and constitutive modeling are conducted, and the microstructure evolution is characterized. An artificial neural network model is developed and embedded in ABAQUS/Explicit for numerical simulation to describe the dynamic hardening behavior and ductile fracture.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Thermodynamics
Qingxiang Ji, Yunchao Qi, Chenwei Liu, Songhe Meng, Jun Liang, Muamer Kadic, Guodong Fang
Summary: Thermal manipulation has been widely studied, and this research proposes a machine learning-based thermal cloak that uses isotropic materials in a finite number of layers. An artificial neural network is established to learn the relationship between the constitutive properties of each layer and the cloaking performances. The designed cloak demonstrates both ease of implementation and excellent thermal invisibility.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Mechanics
Abouzar Jafari, Lingyue Ma, Amir Ali Shahmansouri, Roberto Dugnani
Summary: Quantitative fractography is important in analyzing the failure of brittle materials, but its application is limited due to unknown factors. Artificial neural networks (ANNs) were used to analyze the fracture strength of glasses and ceramics. The developed ANN models outperformed empirical relations in predicting fracture strength and could be extended to a broader range of brittle materials.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Engineering, Multidisciplinary
Weiwei Yu, Zheng Liu, Minyu Fan, Hongbo Gao, Erwei Liu, Mingya Chen, Fei Xue, Xu Chen
Summary: The study focused on the fracture behavior of the main coolant piping material after heat treatment at 400°C for 18,000 hours. Experimental and FEM methods were used to measure stretch zone width values and quantify the constraint effect on fracture properties, showing higher values at lower crack depth ratios and a gradual decrease with increasing crack depth. This information can be used to predict fracture properties under different constraint conditions.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2021)
Article
Engineering, Geological
Peiyuan Lin, Xianying Chen, Mingjie Jiang, Xugen Song, Meijuan Xu, Sheng Huang
Summary: This study develops a simple, efficient, and accurate tool for prompt assessments of shear strength and compressibility parameters of soft soils in the Guangdong-Hong Kong-Macao Greater Bay Area of China. By employing the artificial neural network (ANN) technique, the study maps the shear strength and compressibility properties of soft soils based on their physical parameters and evaluates the accuracy of the ANN models. The study helps save time and cost in geotechnical investigation for soft soils in the area.
ENGINEERING GEOLOGY
(2022)
Article
Food Science & Technology
Puja Das, Prakash Kumar Nayak, Baskaran Stephen Inbaraj, Minaxi Sharma, Radha krishnan Kesavan, Kandi Sridhar
Summary: This study examines the effect of thermosonication on the nutritional properties of lapsi fruit juice and develops an artificial neural network (ANN) model to optimize the extraction process. The findings demonstrate that thermosonicated juices have improved nutritional properties and ANN is a valuable tool for predicting juice extraction effectiveness.
Article
Engineering, Multidisciplinary
Rishika Shah, R. K. Pandit, M. K. Gaur
Summary: This study focuses on the development and validation of an Artificial Neural Network (ANN) model for predicting hourly thermal comfort indices. The results show that the ANN model has excellent predictive ability and can accurately predict thermal comfort indices using a few input parameters such as air temperature.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Chuan-Yong Zhu, Zhi-Yang He, Mu Du, Liang Gong, Xinyu Wang
Summary: The study analyzed the influence of different parameters on the effective thermal conductivity of soils, finding that porosity and water content have a significant impact. While the model with six parameters showed the highest accuracy, the model with only two input parameters (porosity and water content) could still predict the effective thermal conductivity with acceptable accuracy.
Article
Mechanics
Xin Wang, Kuiying Chen
Summary: This paper presents the calculation of complex stress intensity factors (K) for interface cracks in commonly used bi-material specimens under arbitrary ununiform stress fields. General mathematical forms of complex crack face weight functions for interface cracks have been formulated, simplifying the determination of weight functions for specific crack geometrical configurations and material combinations. The method was validated against stress intensity factors solutions for several non-linear stress distributions.
ENGINEERING FRACTURE MECHANICS
(2021)
Letter
Engineering, Mechanical
Chris Bassindale, Xin Wang, William R. Tyson, Su Xu
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2021)
Article
Engineering, Mechanical
Zheng Liu, Xin Wang, Ronald E. Miller, Jiaqi Hu, Xu Chen
Summary: This paper presents experimental investigations of the effects of thermal aging on embrittlement failure mechanism and fracture toughness of 16MND5 RPV steel. Results showed that as aging time increases, micro hardness and tensile properties change slightly, but R-curves decrease significantly. Additionally, the ductile fracture properties of thermal aged RPV steels depend on geometric dimensions of tested specimens.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2021)
Article
Mechanics
Yifan Huang, Xin Wang
Summary: This study utilized 2D FEA to evaluate key parameters for fracture toughness testing on orthotropic materials, developing accurate regression solutions and applying them to experimental data for further discussion. The research outcome is expected to benefit the standardization of fracture toughness testing on orthotropic composite materials.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Mechanical
Zheng Liu, Xin Wang, Ronald E. Miller, Pengfei Jin, Yueyin Shen, Xu Chen
Summary: The current paper presents the application of three-dimensional constraint-based fracture mechanics for the determination of R-curves for thermal aged 16MND5 bainitic forging steel. Results showed that the developed R-curves can reproduce the experimental J-R curves and CTOD-R curves of thermal aged RPV steel with generally good agreements. The combined effects of in-plane constraint, out-of-plane constraint and thermal aging on the fracture toughness were revealed and quantified.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2021)
Review
Materials Science, Multidisciplinary
Jinrong Yan, Xin Wang, Kuiying Chen, Kang N. Lee
Summary: The development of thermal barrier coating system has increased the inlet-temperature of gas turbine engine, but limited application due to not fully understanding the degradation mechanisms. Research suggests that high-temperature sintering of the topcoat may be a major cause of failure in thermal barrier coatings.
Article
Engineering, Mechanical
Pengfei Jin, Zheng Liu, Xin Wang, Xu Chen
Summary: In this paper, extensive three-dimensional finite element models are constructed for the Compact-Tension-Shear (CTS) specimen used in fatigue and fracture tests under mixed-mode I&II loading. The stress intensity factors and T-stresses along the crack front are computed and analyzed, taking into consideration the geometric dimensions and loading angles. These solutions are then used to predict crack initiation angles and analyze fracture toughness and fatigue crack propagation path.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Engineering, Multidisciplinary
Chris Bassindale, Xin Wang, William R. Tyson, Su Xu
Summary: This paper presents a finite element (FE) model for simulating dynamic fracture propagation in steel pipes. The model uses shell elements and a constant crack tip opening angle (CTOA) as a fracture criterion. The model improves computational efficiency while maintaining a high level of accuracy. The proposed model successfully reproduces data from existing CTOA models and reduces computational time. It is demonstrated to be an efficient method for analyzing experimental data.
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2022)
Article
Materials Science, Multidisciplinary
Mark Cohen, Xin Wang
Summary: This paper conducts extensive three-dimensional finite element analysis to study an asymmetric four-point shear (AFPS) specimen and obtains complete solutions of fracture mechanics parameters. It demonstrates the significant effect of specimen thickness on the variation of fracture parameter values and investigates their effects on the crack tip plastic zone. The results presented in this paper are very useful for toughness testing of materials under mixed-mode loading conditions.
Article
Mechanics
Zheng Liu, Xin Wang, Zhe Zhang, Pengfei Jin, Xu Chen
Summary: This study investigated the constraint parameters of clamped SENT specimens through 3D finite element analyses, finding significant effects of crack depth, specimen thickness, loading level, and strain hardening index on the 3D constraint parameters with a coupling effect. The influence of crack depth and specimen geometry on constraint levels decreased with increasing hardening exponent.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Engineering, Mechanical
Bin Qiang, Hongkai Qiu, Yadong Li, Xin Wang, Guozheng Kang
Summary: This study derived weight functions for surface cracks in U-rib-to-deck joints, which accurately calculate the stress intensity factors (SIF). Different crack geometries were analyzed using the finite element method (FEM) to determine their effects on SIFs, and new weight functions were developed and validated. The proposed weight functions were able to calculate the SIFs for surface cracks in U-rib-to-deck joints, accounting for welding residual stresses, and were compared to existing methods.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Engineering, Mechanical
Jinghui Wang, Jiaqi Hu, Pengfei Jin, Haoruo Chen, Sichao Fu, Zheng Liu, Hong Gao, Xin Wang, Xu Chen
Summary: This paper conducted a systematic finite element analysis on compact tension specimens with deflection cracks, investigated the influence of geometric variations on fracture mechanics parameters, and proposed a crack length prediction method based on the compliance multiplier method. The accuracy of the developed method was verified through fatigue crack growth tests.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Energy & Fuels
Chris Bassindale, Xin Wang, William R. Tyson, Su Xu
Summary: This study conducted dynamic ductile fracture propagation simulations to investigate the effects of backfill in pipeline burst simulations using smoothed particle hydrodynamics (SPH). It examined the impact of SPH parameters on fracture velocity, focusing on the crack tip opening angle (CTOA) instead of Charpy absorbed energy (CVN) for characterizing propagation toughness. The numerical study compared results with literature and found that particle size had a minimal effect on fracture velocity, while increasing the density and shear modulus of the backfill material reduced fracture velocity. Additionally, the study found that backfill depth had little effect on fracture velocity.
JOURNAL OF PIPELINE SCIENCE AND ENGINEERING
(2022)
Article
Energy & Fuels
Chris Bassindale, Xin Wang, William R. Tyson, Su Xu, Cindy Guan, Brian Rothwell
Summary: This paper presents a new interpretation of recent full scale burst test data by using crack tip opening angle (CTOA) as a fracture propagation criterion. The CTOA values determined from ASTM E3039 were used as input in the finite element model, and the simulation results were consistent with experimental values.
JOURNAL OF PIPELINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Mechanical
Rosaria Del Toro, Maria Laura De Bellis, Marcello Vasta, Andrea Bacigalupo
Summary: This article presents a multifield asymptotic homogenization scheme for analyzing Bloch wave propagation in non-standard thermoelastic periodic materials. The proposed method derives microscale field equations, solves recursive differential problems within the unit cell, establishes a down-scaling relation, and obtains average field equations. The effectiveness of this approach is validated by comparing dispersion curves with those from the Floquet-Bloch theory.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Yue Bao, Zhengcheng Yao, Yue Zhang, Xueman Hu, Xiandong Liu, Yingchun Shan, Tian He
Summary: This paper proposes a novel triple-gradient phononic acoustic black hole (ABH) beam that strategically manipulates multiple gradients to enhance its performance. The study reveals that the ABH effect is not solely brought about by the thickness gradient, but also extends to the power-law gradients in density and modulus. The synergistic development of three different gradient effects leads to more pronounced and broader bandgaps in PCs.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Matthias Ryser, Jason Steffen, Bekim Berisha, Markus Bambach
Summary: This study investigates the feasibility of replacing complex experiments with multiple simpler ones to determine the anisotropic yielding behavior of sheet metal. The results show that parameter identifiability and accuracy can be achieved by combining multiple specimen geometries and orientations, enhancing the understanding of the yield behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Wenjun Li, Pengfei Zhang, Siyong Yang, Shenling Cai, Kai Feng
Summary: This study presents a novel two-dimensional non-contact platform based on Near-field Acoustic Levitation (NFAL), which can realize both one-dimensional and two-dimensional transportation. Numerical and experimental results prove the feasibility and ease of this method.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Shuo Liu, Lu Che, Guodong Fang, Jun Liang
Summary: This study presents a novel lamina conjugated bond-based peridynamic (BB-PD) model that overcomes the limitations of material properties and is applicable to composite laminates with different stacking sequences. The accuracy and applicability of the model are validated through simulations of elastic deformation and progressive damage behavior, providing an explanation of the damage modes and failure mechanisms of laminated composite materials subjected to uniaxial loading.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Omar El-Khatib, S. Kumar, Wesley J. Cantwell, Andreas Schiffer
Summary: Sandwich-structured honeycombs (SSHCs) are hierarchical structures with enhanced mass-specific properties. A model capable of predicting the elastic properties of hexagonal SSHCs is presented, showing superior in-plane elastic and shear moduli compared to traditional honeycombs, while the out-of-plane shear moduli are reduced.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Zhi-Jian Li, Hong-Liang Dai, Yuan Yao, Jing-Ling Liu
Summary: This paper proposes a process-performance prediction model for estimating the yield strength and ultimate tensile strength of metallic parts fabricated by powder bed fusion additive manufacturing. The effect of main process variables on the mechanical performance of printed metallic parts is analyzed and the results can serve as a guideline for improvement. The accuracy of the proposed model is validated by comparison with literature.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
Saman A. Bapir, Kawa M. A. Manmi, Rostam K. Saeed, Abdolrahman Dadvand
Summary: This study numerically investigates the behavior of an ultrasonically driven gas bubble between two parallel rigid circular walls with a cylindrical micro-indentation in one wall. The primary objective is to determine the conditions that facilitate the removal of particulate contamination from the indentation using the bubble jet. The study found that the bubble jet can effectively remove contamination from the indentation for certain ranges of indentation diameter, but becomes less effective for larger indentation diameters.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Engineering, Mechanical
E. Polyzos, E. Vereroudakis, S. Malefaki, D. Vlassopoulos, D. Van Hemelrijck, L. Pyl
Summary: This research investigates the elastic and damage characteristics of individual composite beads used in 3D printed composites. A new analytical probabilistic progressive damage model (PPDM) is introduced to capture the elastic and damage attributes of these beads. Experimental results show strong agreement with the model in terms of elastic behavior and ultimate strength and strain.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)