Article
Engineering, Mechanical
Swagatam Paul, Snehasish Bhattacharjee, Sanjib K. Acharyya, Prasanta Sahoo
Summary: This study investigates the impact of loading rate on the Weibull stress parameters in the Beremin model for 20MnMoNi55 RPV steel. Finite element modelling and fracture experiments are conducted, and the parameters are calibrated using linear regression analysis and Monte Carlo simulation. The study shows that loading rate has a significant effect on the Weibull stress parameters.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2022)
Article
Polymer Science
Qiaoyu Wang, Jianbin Wang, Anheng Wang, Chaoqun Zhou, Jiale Hu, Fei Pan
Summary: This study aims to analyze the effects of temperature and strain rate on the tensile properties of long glass fiber-reinforced polypropylene composites. The experimental results show that both tensile strength and tensile fracture stress increase significantly at a temperature of 25°C and strain rates of 10(-4), 10(-3), 10(-2), and 10(-1) s(-1). On the other hand, these properties decrease significantly when the strain rate is fixed at 10(-4) while temperatures range from -25°C to 75°C. Cracks appear on the fracture surface at lower temperatures, while matrix softening occurs at higher temperatures. These findings emphasize the significant influence of both strain rate and temperature on high fiber content long glass fiber-reinforced polypropylene composites.
Article
Polymer Science
Lielie Li, Hekai Cao, Junfeng Guan, Shuanghua He, Lihua Niu, Huaizhong Liu
Summary: In this study, a three-parameter Weibull distribution method was used to evaluate the tensile strength and fracture toughness distribution of poly (methyl methacrylate) (PMMA) bone cement. The mean values, minimum values, and standard deviations were determined, and relationships between tensile strength, fracture toughness, and peak load were established.
Article
Mechanics
Lielie Li, Junfeng Guan, Peng Yuan, Yanan Yin, Yue Li
Summary: The study employed a Weibull distribution method to analyze the experimental data of concrete specimens, investigating the relationship between fictitious crack growth and fracture properties to determine critical values related to fracture toughness K-IC.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Materials Science, Multidisciplinary
L. C. M. Barbosa, C. Lorrette, S. Le Bras, E. Baranger, J. Lamon
Summary: This study investigates the statistical distribution of tensile strengths of nuclear grade 3rd generation SiC fibers, specifically Hi-Nicalon type-S (HNS) and Tyranno-SA3 (TSA3), at room temperature. The best fit to the experimental data is determined using normal and Weibull distribution functions. It is found that the Weibull model provides a satisfactory approximation for both types of SiC fibers. Statistical parameters are estimated using Weibull plot method, the method of moments, and maximum likelihood estimators. The Anderson-Darling test confirms that the best fit is obtained regardless of the estimating method used. In addition, fractographic examination of fracture surfaces is used for complementary mechanical characterization.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
L. Tan, M. A. Sokolov, S. J. Pawel, T-L Sham, J. T. Busby
Summary: This study investigates the effect of thermomechanical treatments on ferritic-martensitic steel Grade 92. The results show that appropriate treatments can significantly enhance the mechanical properties and sodium corrosion resistance of the steel, providing new possibilities for meeting specific application requirements.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Mechanics
Claudio Ruggieri, Andrey P. Jivkov
Summary: This study introduces a probabilistic framework incorporating measured statistics of microcracks to predict the cleavage fracture toughness distribution in structural ferritic steels. Experimental Jc-distribution data was obtained through fracture toughness testing on a 22NiMoCr37 pressure vessel steel under varying temperatures. Metallographic examination revealed the distribution of carbides, assumed as Griffith fracture-initiating particles, to predict the cleavage fracture toughness distribution.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Energy & Fuels
Debanjan Guha Roy, T. N. Singh
Summary: This paper investigates the relationship between the strength properties and fracture toughness of Dholpur sandstone at elevated temperatures. The study identifies a suitable brittleness index and examines the stress-strain behavior, degradation degree, peak strain, and porosity values to evaluate the brittle-ductile transition of the rock. The results show the exponential relationship of fracture toughness with Young's modulus, tensile strength, and brittleness index, and suggest a potential transition temperature for Dholpur sandstone.
GEOMECHANICS FOR ENERGY AND THE ENVIRONMENT
(2023)
Article
Food Science & Technology
Dennis Schab, Lydia Tiedemann, Harald Rohm, Susann Zahn
Summary: This study utilized a tensile test method to investigate the behavior of model caramels, and found that under different tensile velocity, moisture, and temperature conditions, caramels exhibit different ductile and brittle behavior transitions. During the caramel's tensile process, the fracture strain was notably lower than the maximum plastic elongation, but there was a convergence near the ductile-brittle transition point.
Article
Biophysics
Ifaz T. Haider, Andrew J. Pohl, W. Brent Edwards
Summary: A stochastic model based on strain magnitude and volume can accurately predict the probability of whole-bone fatigue failure. The model's predictions matched experimental observations and were more accurate compared to reference models that considered strain magnitude only.
JOURNAL OF BIOMECHANICS
(2022)
Article
Mechanics
Benoit Paermentier, Steven Cooreman, Patricia Verleysen, Sarath Chandran, Sam Coppieters, Reza Talemi
Summary: This study investigates the fracture behavior of high-pressure pipelines using a Dynamic Tensile Tear Test (DT3) method, which simulates the actual loading conditions. Experimental observations using high-speed camera imaging and scanning electron microscope analysis were complemented by numerical analysis, showing good correlation between the two.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Materials Science, Multidisciplinary
John J. Pittari, Jeffrey J. Swab, Jared Wright, Katherine Atwater
Summary: In this study, the effect of binder phase on the mechanical properties of tungsten carbide-cobalt materials with different grain sizes was investigated. The results showed that a decrease in grain size led to an increase in hardness and tensile strength, while fracture toughness exhibited an opposite trend. Flexure strength did not show a correlation with grain size. Fractographic analysis identified the primary strength-limiting flaw as porosity, with other flaws types also identified.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Textiles
M. William Kithiia, M. David Munyasi, M. Stephen Mutuli
Summary: This study compared the mechanical properties of natural, mercerized, and cornified sisal fibers. Mercerization significantly improved tensile strength, while cornification increased fracture stress. However, these treatments also introduced flaws in the fibers.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Geochemistry & Geophysics
Yawei Li, Ahmad Ghassemi
Summary: Confined Brazilian tests were conducted to investigate the impact of confining pressure on tensile strength, failure mechanisms, and brittle-ductile transition. Four rock types, including limestone and three sandstones, were tested. Results suggest that the complete strength envelope resembles an offset parabola, with an increase in tensile strength under confinement and a transition from extension to shear as the confining pressure increases.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Mechanics
Shinya Matsuda, Manami Miyake, Kazumasa Oshima
Summary: Thermal decomposition treatment is a typical recycling method for CFRP, but it can decrease the performance of the recovered carbon fibers. This study investigated the tensile fracture characteristics of the outer and inner carbon fibers of CFRP subjected to thermal decomposition treatment. The results showed that the tensile strength of the inner carbon fibers was higher and had a narrower variation.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
M. K. Sahu, J. Chattopadhyay, B. K. Dutta
ENGINEERING FRACTURE MECHANICS
(2019)
Article
Engineering, Mechanical
Shaik Karimulla, B. K. Dutta, G. Gouthaman
JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES
(2020)
Article
Mechanics
Viswa Teja Vanapalli, B. K. Dutta, J. Chattopadhyay, Nevil Martin Jose
ENGINEERING FRACTURE MECHANICS
(2020)
Article
Materials Science, Multidisciplinary
Suman Paik, N. Naveen Kumar, B. K. Dutta, P. Durgaprasad, R. Tewari
MATERIALS TODAY COMMUNICATIONS
(2020)
Article
Engineering, Mechanical
Karimulla Shaik, B. K. Dutta
Summary: This paper developed a closed-form solution to find the nonlinear tuning parameters of symmetric/asymmetric rotor-Squeeze film damper system. By considering linear models and circular centre orbit condition, the solution helped to predict optimum tuning parameters and discuss the contributions of various governing parameters such as damper-to-rotor mass ratio and nonlinear damper forces. Additionally, the role of an additional shaft parameter in obtaining the optimum tuning parameters of asymmetric system was highlighted compared to symmetric system.
JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES
(2021)
Article
Nuclear Science & Technology
Shyam R. Ghodke, Bijan K. Dutta, P. Durgaprasad
FUSION ENGINEERING AND DESIGN
(2020)
Article
Mechanics
Taslim D. Shikalgar, B. K. Dutta, J. Chattopadhyay
ENGINEERING FRACTURE MECHANICS
(2020)
Article
Nuclear Science & Technology
S. R. Ghodke, B. K. Dutta, P. V. Durgaprasad, N. N. Kumar
FUSION ENGINEERING AND DESIGN
(2020)
Article
Engineering, Mechanical
Suman Paik, B. K. Dutta, N. Naveen Kumar, R. Tewari
Summary: The study aims to determine the fracture initiation of a single crystal copper edge-crack specimen under tensile load, considering crystallographic anisotropy, strain hardening, and damage accumulation. By using a damage criterion coupled with crystal plasticity finite element method, material softening after peak load was determined, with damage evolution as a function of maximum shear strain within the crystal plasticity framework. The analysis predicts fracture initiation of cracks along different crystallographic orientations.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2021)
Article
Mechanics
Taslim D. Shikalgar, B. K. Dutta, J. Chattopadhyay
Summary: Three-dimensional finite element analyses of pre-cracked small punch test specimens were conducted to evaluate the plastic constraint factor (m) and its correlation with J-integral and crack tip opening displacement (CTOD). Parametric studies were performed to propose two new J-CTOD correlations based on variations in crack length, material yield strength, and strain hardening coefficients. The predicting capabilities of these correlations were checked by comparing the calculated values with the computed results.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Engineering, Mechanical
Karimulla Shaik, B. K. Dutta
Summary: The paper discusses the stability of a flexible rotor on a horizontal rigid bearing, highlighting the impact of factors such as shaft flexibility, damper support flexibility, damper mass, and turbulence on stability. Insertion of turbulence decreases stability thresholds.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Taslim D. Shikalgar, B. K. Dutta, J. Chattopadhyay
Summary: A new correlation method is proposed to evaluate the plastic component of crack tip opening displacement (dplastic) in a pre-cracked small punch test (p-SPT) specimen. Through finite element simulations and experimental data, the usefulness of the correlation method is demonstrated.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2022)
Proceedings Paper
Engineering, Mechanical
Viswa Teja Vanapalli, J. Chattopadhyay, Nevil Martin Jose, B. K. Dutta
2ND INTERNATIONAL CONFERENCE ON STRUCTURAL INTEGRITY AND EXHIBITION 2018 (SICE 2018)
(2019)
Proceedings Paper
Engineering, Mechanical
Taslim D. Shikalgar, B. K. Dutta, J. Chattopadhyay
2ND INTERNATIONAL CONFERENCE ON STRUCTURAL INTEGRITY AND EXHIBITION 2018 (SICE 2018)
(2019)
Article
Engineering, Multidisciplinary
Sanjeev Saxena, B. K. Dutta
INDIAN JOURNAL OF ENGINEERING AND MATERIALS SCIENCES
(2018)
Article
Nanoscience & Nanotechnology
Ahmad Mirzaei, Peter D. Hodgson, Xiang Ma, Vanessa K. Peterson, Ehsan Farabi, Gregory S. Rohrer, Hossein Beladi
Summary: This study investigated the influence of parent austenite grain refinement on the intervariant boundary network in a lath martensitic steel. It found that refining the parent austenite grain led to a decrease in the fraction of certain boundaries in the martensite and an increase in the connectivity of low energy boundaries, ultimately improving the impact toughness.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
N. L. Church, C. E. P. Talbot, L. D. Connor, S. Michalik, N. G. Jones
Summary: Metastable beta Ti alloys based on the Ti-Nb system have attracted attention due to their unique properties. However, the unstable cyclic behavior of these alloys has hindered their widespread industrial use. Recent studies have shown that internal stresses, including those from dislocations, may be responsible for this behavior. This study demonstrates that inter-cycle thermal treatments can mitigate the unstable cyclic behavior, providing a significant breakthrough in our understanding of Ti-Nb superelastic materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Di Zhao, Chenchen Zhao, Ziyang Xiu, Jiuchun Yan
Summary: This study proposes a novel strategy for achieving the bonding of SiC ceramic and Al alloy using ultrasound. The ultrasound promotes the dissolution of Al into the solder, activating the solder and triggering the interfacial reaction between SiC ceramic and solder. With increasing ultrasonic duration, the bonding between SiC and Al transitions from partial to full metallurgical bonding.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Kang Du, Yang Zhang, Guangda Zhao, Tao Huang, Liyuan Liu, Junpeng Li, Xiyu Wang, Zhongwu Zhang
Summary: This paper systematically investigated the evolution of microstructure in Fe-Ni-Co-Al polycrystalline alloys and its effects on mechanical properties. The results revealed that the migration of grain boundaries in different processes is driven by different factors, which impacts the grain orientation and precipitate formation. In the process of directional recrystallization, grains with specific orientations grow in the grain boundary region and form the dominant orientation, while grains with lower migration rate form the minor orientation. The alloy produced through directional recrystallization exhibited good recoverable strain and superelastic strain, while the alloy produced through solid solution treatment showed no evident superelastic behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Edohamen Awannegbe, Liang Chen, Yue Zhao, Zhijun Qiu, Huijun Li
Summary: This study employed laser metal deposition to additively manufacture Ti-15Mo wt% alloy, and subsequently subjected it to post-fabrication uniaxial thermomechanical processing. The results showed that different zones in the microstructure remained after processing, and deformation mechanisms mainly involved slip and martensite formation. The compressive mechanical properties were found to be dependent on strain rate, with higher flow stress and compressive strength observed at higher strain rates. Grain structure homogenisation was not achieved, leading to anisotropic tensile properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Reza Khatib Zadeh Davani, Enyinnaya George Ohaeri, Sandeep Yadav, Jerzy A. Szpunar, Jing Su, Michael Gaudet, Muhammad Rashid, Muhammad Arafin
Summary: This research aims to investigate the effect of roughing and finishing reductions on crystallographic texture. The results show significant heterogeneity in the centerline region, with higher intensity of certain textures. Drop Weight Tear Test indicates that steel specimens with lower and medium reductions exhibit superior low-temperature impact toughness compared to steel with higher reductions. The electrochemical hydrogen charging experiments confirm the presence of internal hydrogen cracks only in steel with lower and medium reductions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Flavio De Barbieri, Denis Jorge-Badiola, Rodrigo Allende, Karem Tello, Alfredo Artigas, Franco Perazzo, Henry Jami, Juan Perez Ipina
Summary: This study examines the effect of Cr additions on the mechanical behavior of TWIP steel at temperatures ranging from 25°C to 350°C. The results indicate that different temperature-dependent strengthening mechanisms, including mechanical twinning, Dynamic Strain Aging, and slip bands, are at play. The stacking fault energy (SFE) influences the percentage of mechanical twinning, which in turn affects the strain hardening rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Hanlin Peng, Siming Huang, Ling Hu, Bingbing Luo, Liejun Li, Ian Baker
Summary: This study explores the weldability, microstructures, and mechanical properties of two L1(2)-nanoparticle-strengthened medium-entropy alloys after electron beam welding (EBW). The results show that strong yet ductile defect-free joints were produced, with larger grain sizes in the fusion zones compared to the heat-affected zones and base materials. Both EBWed MEAs exhibited high yield strengths, high ultimate tensile strengths, and good fracture strains at 77 K. The V-doping improved the cryogenic mechanical properties of the TMT MEA.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yongxin Wang, Lei Chen, Lizi Shao, Shuo Hao, Motomichi Koyama, Xingzhou Cai, Xiaocong Ma, Miao Jin
Summary: This study investigated the tensile deformation behavior of an Mn-N bearing lean duplex stainless steel with metastable austenite. The results showed that the strain rate had significant influence on the work hardening, strain-induced martensitic transformation, and fracture mechanism.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Jong Woo Won, Seulbi Lee, Hye-Jeong Choe, Yong-Taek Hyun, Dong Won Lee, Jeong Hun Lee
Summary: Cold-rolled pure titanium showed improved sheet formability after undergoing cryogenic-deformation treatment. This treatment increased the thinning capability of the titanium and suppressed cracking during sheet forming. The formation of twins during deformation contributed to high thinning capability and increased strength through grain refinement and dislocation accumulation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Handong Li, Lin Su, Lijuan Wang, Yanbin Jiang, Jiahui Long, Gaoyong Lin, Zhu Xiao, Yanlin Jia, Zhou Li
Summary: Homogenization heat treatment is a key procedure in controlling the second phase, enhancing composition uniformity, and workability of as-cast Cu-15Ni-8Sn alloy. This study found that electropulsing treatment (EPT) can significantly reduce treatment temperature and time, improve elongation and overall mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yuxuan Wang, Juntao Zou, Lixing Sun, Yunfei Bai, Zhe Zhang, Junsheng Cheng, Lin Shi, Dazhuo Song, Yihui Jiang, Zhiwei Zhang
Summary: A novel mechanical-heat-electricity synergistic method was proposed to enhance the mechanical properties of Cu-15Sn-0.3Ti alloy by forming annealing twins (ATs). The combination method of Rotary swaging (RS) and Electric pulse treatment (EPT) successfully induced recrystallization and refinement of the microstructure, leading to a significant increase in the strength of the alloy within a short time.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Zhiyi Ding, Jiangtao Xie, Tong Wang, Aiying Chen, Bin Gan, Jinchao Song
Summary: This study demonstrated the Ta-induced strengthening of CoCrNi-AlTi MEAs using nanoscale heterogeneous coherent precipitates. The addition of Ta and aging treatments significantly enhanced the mechanical properties of the alloy, including yield strength, ultimate tensile strength, and elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Z. Y. You, Z. Y. Tang, B. Wang, H. W. Zhang, P. Li, L. Zhao, F. B. Chu, H. Ding
Summary: The mechanical properties and microstructural evolution of C-doped TRIP-assisted HEA under dynamic loading conditions were systematically investigated in this study. The results showed that dynamic tensile deformation led to an increase in yield strength and a decrease in ultimate tensile strength, with a trend towards increased total elongation. The primary deformation mechanisms shifted from TRIP and TWIP effects to deformation twinning and dislocations. The presence of carbides formed through C-doping hindered dislocation slip and promoted the activation of multiple twinning systems.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Feng Qin, Feihu Chen, Junhua Hou, Wenjun Lu, Shaohua Chen, Jianjun Li
Summary: Plastic instability in strong multilayered composites is completely suppressed by architecting nanoscale BCC Nb crystalline-amorphous CuNb interfaces.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
