Article
Nanoscience & Nanotechnology
T. Babinsky, I. Sulak, I. Kubena, J. Man, A. Weiser, E. Svabenska, L. Englert, S. Guth
Summary: This study investigates the thermomechanical fatigue behavior of additively manufactured metallic materials, specifically focusing on the 316L austenitic stainless steel. The findings highlight the crucial role of microstructural texture and the number of grain boundaries in determining the performance of these materials under different loading conditions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Peng Yin, Wei Zhang, Yi Zhang, Qiaofa Yang, Fei Liang, Le Chang, Changyu Zhou
Summary: The thermomechanical fatigue behavior of 316L was investigated by analyzing internal stress and microstructural characteristics at different cyclic stages. The results showed that cyclic stress response exhibited initial hardening followed by cyclic softening at high strain amplitudes, while continuous cyclic hardening was observed as the strain amplitude decreased. Out-of-phase TMF always resulted in cyclic softening regardless of strain amplitude. The contributions of back stress and friction stress to initial and subsequent cyclic hardening were highlighted. The hardening of back stress and friction stress was attributed to dislocation proliferation at grain boundaries and increased dislocation interactions within grains, respectively. The cyclic softening of friction stress was attributed to the annihilation of dislocations due to cross-slip. The hysteresis curves revealed that the intensity of dynamic strain aging depended on strain amplitude, loading history, and phase angle, which were related to cross-slip occurrence, solute atom diffusion rate, point defect density, and vacancy mobility. The effect of loading conditions on fracture behavior, including crack sources, secondary cracks, creep cavities, and oxidation damage, was demonstrated.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Mechanics
Saveria Spiller, Sondre Olsoybakk Kolstad, Nima Razavi
Summary: The fatigue life of 316L components fabricated via MEAM is lower compared to wrought 316L, as internal defects from the deposition strategy result in observed crack initiation sites.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Engineering, Mechanical
Shen Guo, Wei Zhang, Peng Yin, Tian-Hao Ma, Jian-Bin Wen, Guo-Dong Zhang, Fei Xue, Yan-Fen Zhao, Chang-Yu Zhou
Summary: The present work investigates the thermomechanical fatigue behavior and life prediction of P92 steel welded joints under various mechanical strain amplitudes and phase angles. The results show that welded joints exhibit significant cyclic softening during fatigue process, with fatigue life being dependent on both strain amplitude and phase angle. A decrease in strain amplitude and an increase in phase angle lead to an increase in fatigue life, while fracture position changes significantly with changes in strain amplitude and phase angle. Finally, a modified energy-based life prediction model is proposed by considering the effects of phase angle and mean stress.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Engineering, Mechanical
Jingwei Zhao, Bingbing Li, Gang Chen, Takamoto Itoh, Xu Chen
Summary: Fatigue tests on 316LN stainless steel showed that the introduction of tensile strain hold had a more deleterious effect on TMF performance, and an inelastic relaxation strain rate is more appropriate for characterizing creep damage.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Materials Science, Multidisciplinary
Zahra Abbasi, Hamid Reza Abedi
Summary: This study investigates the hot deformation behavior and recrystallization mechanisms of selective laser melted 316L stainless steel. The results show that the development of substructures and continuous recrystallization are the main softening mechanisms during thermomechanical processing. The presence of cellular substructures facilitates recrystallization, and both discontinuous and geometric dynamic recrystallization contribute to the deformation process.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Civil
Wei Li, Qingfan Wang, Hui Qu, Yong Xiang, Zhaodong Li
Summary: This paper conducts experimental studies on the mechanical properties of HRBSC under low-cycle fatigue with buckling. The ultimate strength, strength degradation and fatigue life evaluation methods are discussed and proposed. It is validated that HRBSC possesses desirable material properties and can be used as longitudinal load carrying rebar in seismic designed structures.
Review
Chemistry, Physical
Andrea Avanzini
Summary: 316L stainless steel is the preferred material for applications that require a combination of mechanical strength and corrosion resistance, such as in the biomedical field. Additive Manufacturing (AM) technologies offer new design solutions, but the microstructure, defects, and surface characteristics of AM materials are different from traditional processing routes, making the evaluation of long-term durability crucial.
Article
Materials Science, Multidisciplinary
Wenye Ye, Xing Zhang, Jake Hohl, Yiliang Liao, Leslie T. Mushongera
Summary: Crystal plasticity simulations and machine learning are used to investigate the influence of columnar microstructures on the local mechanical behavior of DED-fabricated 316L stainless steel. The simulations reveal that columnar microstructures exhibit better fatigue strength when the load is parallel to the major axis of the grains. Additionally, the study demonstrates that a combined crystal plasticity-machine learning approach is an effective method to predict the fatigue behavior of additively manufactured components.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Engineering, Mechanical
Wenchun Jiang, Xuefang Xie, Tianjiao Wang, Xiancheng Zhang, Shan-Tung Tu, Jinguang Wang, Xu Zhao
Summary: Residual stresses have a significant impact on the fatigue strength of welding structures, requiring an accurate model to consider their effects. The role of residual stress in fatigue life is mainly reflected in the increase of mean stress, and its redistribution is closely related to fatigue fracture behavior.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Mechanics
Yan Li, Shaoning Geng, Ping Jiang
Summary: The ultra-high power laser-MIG hybrid welding technique is an effective method for joining thick-walled components, but the fatigue properties of the joints are rarely studied. This research aims to uncover the evolution of fatigue behavior in thick weldments along the penetration direction. The derived S-N curves show a decreasing trend in fatigue strength, and the failure location shifts from the heat affected zone to the weld center in the depth direction. The mechanism of fatigue crack initiation and propagation is discussed, revealing that shrinkage cavities in the lower layer decrease fatigue performance. The research results provide theoretical guidance for the use of ultra-high power laser-MIG hybrid welded joints.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Engineering, Mechanical
Ensheng Feng, Xiaogang Wang, Chao Jiang
Summary: This paper compares the critical plane approach (CPA) and the dissipated energy approach (DEA) for multiaxial fatigue evaluation. The study finds that the developed DEA model performs better than classic CPA models in terms of prediction accuracy and versatility to different loading paths. An investigation into crack mechanisms reveals that the majority of multiaxial fatigue life is spent on the formation of micro-cracks, which exhibit distinct characteristics under different loading paths. The DEA model is able to better consider this effect compared to the adopted CPA models.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2022)
Article
Engineering, Mechanical
Fanyu Zeng, Yongtai Yang, Guian Qian
Summary: This study investigates the fatigue properties of 316L stainless steel manufactured with selective laser melting technology and hot-isostatic-pressing heat-treatment. The results show that the resistance to high-stress fatigue fracture is significantly improved by using HIP heat-treatment.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Nanoscience & Nanotechnology
Mohammad Jamalkhani, Bradley Nathan, Mike Heim, Dave Nelson, Amir Mostafaei
Summary: The study investigated the influence of surface roughness on the high-cycle fatigue properties of vacuum sintered binder jetted gas atomized fine 316L stainless steel powder. The results showed that mechanical grinding can significantly improve the surface roughness and enhance the fatigue life. The study also revealed the relationship between residual stress and surface hardness on the mechanically ground samples.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Mechanical
Bingbing Li, Yiming Zheng, Gang Chen, Takamoto Itoh, Xu Chen
Summary: The effects of strain amplitude on the isothermal fatigue and thermomechanical fatigue behaviors of 316LN stainless steel were studied and the physical mechanisms for the evolution of cyclic stress response were revealed. The manifestations of dynamic strain aging, dependence on loading modes and influence on deformation properties were discussed. A change in the dominated damage mechanism occurred at a strain amplitude of approximately 0.27%, where the isothermal fatigue and thermomechanical fatigue life curves intersected. The maximum stress was found to be an appropriate damage parameter for life prediction with a scatter band of 1.5.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Chemistry, Medicinal
Koneni V. Sashidhara, Ram K. Modukuri, Seema Singh, K. Bhaskara Rao, G. Aruna Teja, Sampa Gupta, Shubha Shukla
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2015)
Article
Chemistry, Medicinal
Koneni V. Sashidhara, K. Bhaskara Rao, Pragati Kushwaha, Ram K. Modukuri, Pratiksha Singh, Isha Soni, P. K. Shukla, Sidharth Chopra, Mukesh Pasupuleti
ACS MEDICINAL CHEMISTRY LETTERS
(2015)
Article
Infectious Diseases
Anil Kumar Jaiswal, K. Bhaskara Rao, Pragati Kushwaha, Keerti Rawat, Ram K. Modukuri, Prashant Khare, Sumit Joshi, Shikha Mishra, Ambak Rai, Koneni V. Sashidhara, Anuradha Dube
INTERNATIONAL JOURNAL OF ANTIMICROBIAL AGENTS
(2016)
Article
Biochemistry & Molecular Biology
Koneni V. Sashidhara, K. Bhaskara Rao, Ravi Sonkar, Ram K. Modukuri, Yashpal S. Chhonker, Pragati Kushwaha, Hardik Chandasana, A. K. Khanna, Rabi S. Bhatta, Gitika Bhatia, Manish Kumar Suthar, Jitendra Kumar Saxena, Vikash Kumar, Mohammad Imran Siddiqi
Article
Materials Science, Multidisciplinary
Preeti Verma, Joysurya Basu, N. C. Santhi Srinivas, Vakil Singh
MATERIALS CHARACTERIZATION
(2017)
Article
Engineering, Multidisciplinary
R. S. Rajpurohit, N. C. Santhi Srinivas, S. R. Singh, V. Singh
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
(2018)
Article
Chemistry, Medicinal
Koneni V. Sashidhara, K. Bhaskara Rao, Seema Singh, Ram K. Modukuri, G. Aruna Teja, Hardik Chandasana, Shubha Shukla, Rabi S. Bhatta
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
(2014)
Article
Chemistry, Medicinal
Koneni V. Sashidhara, K. Bhaskara Rao, Vikas Kushwaha, Ram K. Modukuri, Richa Verma, P. K. Murthy
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
(2014)
Article
Engineering, Mechanical
G. S. Mahobia, Neeta Paulose, S. L. Mannan, R. G. Sudhakar, K. Chattopadhyay, N. C. Santhi Srinivas, Vakil Singh
INTERNATIONAL JOURNAL OF FATIGUE
(2014)
Article
Chemistry, Medicinal
Koneni V. Sashidhara, Ram K. Modukuri, Pooja Jadiya, K. Bhaskara Rao, Tanuj Sharma, Rizwanul Haque, Deependra Kumar Singh, Dibyendu Banerjee, Mohammad Imran Siddiqi, Aamir Nazir
ACS MEDICINAL CHEMISTRY LETTERS
(2014)
Article
Acoustics
Vaibhav Pandey, J. K. Singh, K. Chattopadhyaya, N. C. Santhi Srinivas, Vakil Singh
Article
Biochemistry & Molecular Biology
Ram K. Modukuri, Dharmendra Choudhary, Sampa Gupta, K. Bhaskara Rao, Sulekha Adhikary, Tanuj Sharma, Mohammad Imran Siddiqi, Ritu Trivedi, Koneni V. Sashidhara
BIOORGANIC & MEDICINAL CHEMISTRY
(2017)
Proceedings Paper
Engineering, Mechanical
A. Nagesha, R. Kannan, R. Sandhya, G. V. S. Sastry, M. D. Mathew, K. Bhanu Sankara Rao, Vakil Singh
6TH INTERNATIONAL CONFERENCE ON CREEP, FATIGUE AND CREEP-FATIGUE INTERACTION
(2013)
Proceedings Paper
Engineering, Mechanical
Rahul Garg, G. Sudhakar Rao, Vikash Bhartia, Vakil Singh
6TH INTERNATIONAL CONFERENCE ON CREEP, FATIGUE AND CREEP-FATIGUE INTERACTION
(2013)
Article
Agriculture, Multidisciplinary
R. S. Sisodia, Munna Lal, D. Ashok Vardhan, R. B. Singh, Asit Mandal, M. C. Manna, V. K. Singh, Brajendra
INDIAN JOURNAL OF AGRICULTURAL SCIENCES
(2013)
Article
Engineering, Mechanical
Miloslav Kepka, Miloslav Kepka Jr, Radovan Minich
Summary: This paper focuses on the fatigue life evaluation of the bodywork of a new articulated electric (battery) bus. The findings resulted in recommendations to improve the operational reliability of a particular vehicle and provided challenges for future research.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
T. Dusautoir, B. Berthel, S. Fouvry, P. Matzen, K-D. Meck
Summary: This study investigates the impact of post-processing treatments on the fatigue limit of additive manufactured Ti-6Al-4V under stress gradients, with a focus on surface integrity.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Zhuofan Xia, Di Wu, Xiaochen Zhang, Jianqiu Wang, En -Hou Han
Summary: The study reveals the surface-initiated rolling contact fatigue (RCF) failure mechanism under heavy load and initial high roughness surface. The results indicate that precursor of collapsed morphology and nanocrystalline layer are the main factors causing lower RCF life with high roughness compared to low roughness surfaces. The spalling failure initiating from low roughness surface under heavy load is strongly dependent on surface plastic deformation.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Daniel Gren, Knut Andreas Meyer
Summary: Rolling contact loading can cause plastic deformation and fatigue cracks. Current rail standards do not consider the effect of plasticity on mechanical behavior. This study proposes a new method for evaluating the fatigue life of deformed material and finds that superimposed compressive axial loads can increase fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
R. Kumar, S. Sanyal, J. Bhagyaraj, E. Hari Krishna, S. Mukherjee, K. Prasad, S. Mandal
Summary: This study investigates the thermomechanical fatigue (TMF) behavior of Timetal 834 alloy under different loading conditions. The results show that the alloy exhibits different cyclic hardening and softening responses at different strain amplitudes. The strain amplitude and phase angle have significant effects on the TMF life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Kai Donnerbauer, Tobias Bill, Peter Starke, Ruth Acosta, Bharath Yerrapa, Christian Boller, Klaus Heckmann, Frank Walther
Summary: Given the aging of nuclear power plants, it is important to develop methods for evaluating the integrity of components and structures in nuclear engineering. Suitable nondestructive testing methods can detect material degradation and determine its fatigue life. This study utilized various NDT parameters and scanning electron microscopic methods to explore the relationship between microstructure evolution and NDT data.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Liuyong He, Jiang Zheng, Tianjiao Li, Houkun Zhou, Lihong Xia, Bin Jiang
Summary: This study quantitatively analyzed the effects of precipitates on the deformation mode, cracking mode, and mechanical behavior of WE54 magnesium alloy during low-cycle fatigue. It was found that precipitates promoted the activation of dislocation slip and suppressed the activation of twinning, affecting the cracking mode and mechanical behavior.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Xiangkang Zeng, Conghui Zhang, Wenguang Zhu, Mingliang Zhu, Tongguang Zhai, Xiaomei He, Kangkai Song, Zhuohang Xie
Summary: The cyclic deformation behaviors and damage mechanisms of pure Zr were investigated. The cyclic stress response was mainly influenced by substructure evolutions. Prismatic < a > dislocation slip was identified as the dominant deformation mechanism. Fatigue damage was not only influenced by the initial texture, but also other factors.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Jingyu Yang, Bingbing Li, Yiming Zheng, Gang Chen, Xu Chen
Summary: Heat treatment is used to improve the low-cycle fatigue performance of additive manufactured 316LN stainless steel. The heat-treated material demonstrates initially cyclic hardening followed by softening behavior, and shows a stronger resistance to crack propagation compared to the as-built material, resulting in a longer fatigue life.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Lang Zou, Dongfang Zeng, Xiong Chen, Jun Li, Hai Zhao, Liantao Lu
Summary: This study investigates the competitive relationship between fretting fatigue and plain fatigue in press-fitted railway axles. By changing the depth of the stress relief groove, the plain fatigue limit and fretting fatigue strength were tested. Detailed information was gathered, and an evaluation methodology integrating finite element simulation and the Modified Wohler Curve Method was established. The study concludes that the optimal groove depth, which balances the anti-fatigue capabilities, depends on the number of test cycles.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Davide Leonetti, Koji Kinoshita, Yukina Takai, Alain Nussbaumer
Summary: This paper investigates the fatigue behavior of non-load-carrying transverse welded steel attachments, including fatigue crack monitoring and fracture surface analysis under constant and variable amplitude loading. A procedure is proposed to obtain a Markov transition matrix based on the measured strain signal and to randomly resample the stress history for variable amplitude fatigue tests.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Zhe Zhang, Bing Yang, Yuedong Wang, Shoune Xiao
Summary: This paper presents a method for designing fatigue life prediction models with small sample sizes by handling limited sample data. The method integrates the equivalent structural stress method with the maximum likelihood estimation method and adds reliability verification, resulting in enhanced goodness of fit, stability, and optimized sample quantity.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Cooper K. Hansen, Gary F. Whelan, Jacob D. Hochhalter
Summary: This paper presents a method to address the computational demand issue of computing FIPs using CPFEM by developing an interpretable machine learning model. Genetic programming is used to evolve interpretable expressions of FIPs from microstructure features, and these models can serve as efficient substitutes for CPFEM and be easily integrated into engineering workflows.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Luca Susmel
Summary: This paper discusses the problem of estimating notch fatigue limits using machine learning. The results show that machine learning is a promising approach for designing notched components against fatigue. The accuracy in estimating the fatigue limit can be increased by increasing the size and quality of the calibration dataset, as well as including additional input features.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)
Article
Engineering, Mechanical
Kefeng Gao, Guoqi Tan, Yanyan Liu, Qiang Wang, Qian Tang, Xuegang Wang, Qiqiang Duan, Zengqian Liu, Zhe Yi, Zhefeng Zhang
Summary: Bioinspired architectures have significant effects on material enhancement. This study investigates the fatigue properties of bioinspired ceramic-polymer composites and natural nacre, revealing the close relationship between architectural types, orientations, fatigue performance, and damage mechanisms.
INTERNATIONAL JOURNAL OF FATIGUE
(2024)