Article
Materials Science, Characterization & Testing
Andreas Hottin, Moussa Nait-Abdelaziz, Abderrahim Talha, Pierre Charrier
Summary: This paper investigates the self-heating phenomenon of natural rubber under multiaxial mechanical loading and proposes a suitable model to predict the heat build-up of elastomers under multiaxial cyclic loadings. The comparison between experiments and simulations shows that the proposed model accurately predicts the temperature evolution during fatigue loading.
Article
Chemistry, Multidisciplinary
Jingwei Meng, Teng Fei, Jinxiong Cai, Qi Lai, Jinya Zhang, Siping Pang, Chunlin He
Summary: In this work, a novel energetic molecule DATNBP-2 was designed and synthesized, which exhibited high density, high thermal decomposition temperature, and excellent detonation performance. It outperformed traditional explosives in terms of stability.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Reprint
Engineering, Mechanical
B. Dieu, S. Fouvry, V. Doquet, F. Bridier
Summary: This paper investigates the influence of sleeve edge geometry on fretting-fatigue damage in shaft shrink-fitted assemblies under rotating bending. Experimental tests and analysis of broken and unbroken specimens confirm the presence of fretting-fatigue phenomena. A 3D finite element model is developed to evaluate sliding and opening lengths. A sequential tribological-fatigue stress analysis strategy is employed to predict the maximum crack location (Ruiz criterion) and estimate the fatigue endurance of the assembly using the SWT criterion. The presence of a debris layer within the contact is considered in the last step of the sSWT(X-Gmax) approach to improve the consistency of service life prediction.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Manufacturing
T. P. Moran, D. H. Warner, A. Soltani-Tehrani, N. Shamsaei, N. Phan
Summary: The study examined the relationship between build defects and their position on the build plate in Ti-6Al-4V specimens fabricated on two common commercial laser powder bed fusion systems, revealing substantial spatial heterogeneity of the defect population. The impact of such variability on fatigue performance was considered, with investigations into asymmetries inherent to LPBF fabrication as potential sources of the spatial heterogeneity, explained by shielding gas flow simulations.
ADDITIVE MANUFACTURING
(2021)
Review
Environmental Sciences
Luca Caricchi, Meredith Townsend, Eleonora Rivalta, Atsuko Namiki
Summary: Understanding the storage, release, and ascent of magma is crucial for predicting volcanic activity, and requires an interdisciplinary approach that combines real-time monitoring and geophysical surveys with petrology and volcanic eruptive history.
NATURE REVIEWS EARTH & ENVIRONMENT
(2021)
Article
Energy & Fuels
Arindam Dey, Somenath Ganguly
Summary: The study evaluates the application of inorganic phase change material (PCM) for temperature control on the instrument panel through numerical simulation, showing a reduction in temperature gradient and an effect on average temperature. The size and placement of microencapsulated PCM affect the temperature build-up characteristics. Different cooling characteristics are observed under two different exposure conditions of the upper surface of the paint layer.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Engineering, Manufacturing
Arash P. Jirandehi, Behnam Hajshirmohammadi, Patricio Carrion, M. M. Khonsari, Nima Shamsaei, Shuai Shao
Summary: By testing additively manufactured Inconel 718 parts fabricated in different build orientations in a fatigue mode, it is found that vertically built specimens endure the most fatigue damage before failure, while diagonally built ones sustain the least. Additionally, a microstructure-sensitive algorithm is used to estimate the fatigue life under arbitrary load amplitudes with acceptable accuracy compared to experiments.
ADDITIVE MANUFACTURING
(2022)
Article
Mechanics
Tran Huu Nam, I Petrikova, B. Marvalova
Summary: The heat build-up and dynamic mechanical behavior of an anisotropic magnetorheological elastomer under cyclic compressive loading were investigated. The study found that the temperatures increased with rising pre-strain, strain amplitude, and loading frequency. The storage modulus varied slightly with time, while the loss modulus decreased considerably with rising time. Additionally, the dynamic moduli reduced with the rise in the strain amplitude, but enhanced with raising the pre-strain.
MECHANICS OF TIME-DEPENDENT MATERIALS
(2023)
Article
Construction & Building Technology
Jinglin Zhang, Tao Ma, Yang Zhang, Aopeng Wang
Summary: A new fatigue criterion and fatigue life prediction method were proposed to address the discrepancy in fatigue life prediction of cement-stabilized aggregates (CSA) under different stress states in laboratory and field pavement structures. Experimental fatigue tests were conducted in four loading modes, and the results showed significant differences in fatigue life between tension and compression. Inspired by yield and failure criteria theories, a novel fatigue equation based on the semi-log-linear form was developed, which can unify fatigue life prediction under different stress states.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Environmental
Zhen Cheng, Zhen-qi Zhang, Qing Ma, Lei Yang, Hongwei Yang, Guangbin Cheng, Guijuan Fan, Wei Yang
Summary: Striking a balance between energy, sensitivity, and thermostability is a challenge in the field of energetic materials. In this study, novel energetic materials based on the pyrazolium[5,1-C][1,2,4]triazine framework were synthesized, demonstrating high density, excellent energetic performance, low sensitivity, and superior thermostability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
Hong He, Jinming Liu, Yaru Zhang, Xue Han, William Mars, Liqun Zhang, Fanzhu Li
Summary: This study used a thermo-mechanical coupling method to predict the steady-state temperature distribution and rolling resistance of solid tires under different loads and rotating speeds. The simulation results were compared with experimental results, and the Lagrangian model showed the highest prediction accuracy. The effectiveness of the thermo-mechanical coupling analysis method was verified through the comparison between simulation and experimental results.
Article
Multidisciplinary Sciences
S. Ito, M. Schueler, M. Meierhofer, S. Schlauderer, J. Freudenstein, J. Reimann, D. Afanasiev, K. A. Kokh, O. E. Tereshchenko, J. Guedde, M. A. Sentef, U. Hoefer, R. Huber
Summary: Strong light fields create novel functionalities of solids and enable exotic quantum phases by driving electrons to form Floquet-Bloch states. In this study, the ultrafast build-up of Floquet-Bloch bands was visualized using time-resolved and angle-resolved photoemission spectroscopy. The simultaneous occurrence of Floquet states with intraband and interband dynamics was explained through quantum non-equilibrium calculations.
Article
Materials Science, Multidisciplinary
Radomila Konecna, Tibor Varmus, Gianni Nicoletto, Michal Jambor
Summary: This paper discusses the technology developed by Elementum 3D company to solve the problem of hot cracking during rapid solidification in additive manufacturing of high strength Al alloys. By inoculating with ceramic nanoparticles using RAM technology, a very fine equiaxed microstructure with exceptional properties and without cracks can be achieved. The study also investigates the effects of surface roughness and material microstructure on the fatigue life of the high-strength Al2024-RAM2 alloy.
Article
Engineering, Mechanical
Robert K. Rhein, Qianying Shi, Srinivasan Arjun Tekalur, J. Wayne Jones, Jason W. Carroll
Summary: The study evaluates the high cycle fatigue behavior of additively manufactured AlSi10Mg using ultrasonic fatigue to accelerate testing. It investigates the effects of varied build parameters on defect type, size, and distribution, and analyzes their influence on fatigue behavior. The results suggest that an optimized processing route tailored to defect size, type, and distribution can achieve the necessary high cycle fatigue properties.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2021)
Article
Materials Science, Ceramics
Xiaoyuan Duan, Rongyao Tao, Yuchen Chen, Zhiyi Zhang, Guizhe Zhao, Yaqing Liu, Shuaishuai Cheng
Summary: Conventional fabrication processes face challenges in achieving enhanced mechanical properties, thermal conductivity, and low heat build-up properties simultaneously in graphene-rubber composites. This study successfully improved the comprehensive performance by increasing filler structure and modifying the interface. The addition of nano-sulfur not only improved interfacial compatibility but also formed a cross-linked network structure.
CERAMICS INTERNATIONAL
(2022)
Article
Thermodynamics
Louis Leveuf, Libor Navratil, Vincent Le Saux, Yann Marco, Jerome Olhagaray, Sylvain Leclercq
CONTINUUM MECHANICS AND THERMODYNAMICS
(2020)
Article
Thermodynamics
L. Laiarinandrasana, T. F. Morgeneyer, Y. Cheng, L. Helfen, V Le Saux, Y. Marco
CONTINUUM MECHANICS AND THERMODYNAMICS
(2020)
Article
Engineering, Mechanical
Parham Mostofizadeh, Mahmoud Kadkhodaei, Shabnam Arbab Chirani, Luc Saint-Sulpice, Maha Rokbani, Tarak Bouraoui, Sylvain Calloch
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2019)
Article
Engineering, Electrical & Electronic
Miguel A. Sanchez-Soriano, Yves Quere, Vincent Le Saux, Stephan Marini, Marta S. Reglero, Vicente E. Boria, Cedric Quendo
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2019)
Article
Engineering, Mechanical
V. Roue, C. Doudard, S. Calloch, Q. Pujol d'Andrebo, F. Corpace, C. Guevenoux
INTERNATIONAL JOURNAL OF FATIGUE
(2020)
Article
Mechanics
Libor Navratil, Louis Leveuf, Vincent Le Saux, Yann Marco, Jerome Olhagaray, Sylvain Leclercq, Sylvain Moyne, Matthieu Le Saux
MECHANICS OF TIME-DEPENDENT MATERIALS
(2020)
Article
Engineering, Mechanical
Bruno Levieil, Cedric Doudard, David Thevenet, Florent Bridier, Anthony Ezanno, Sylvain Calloch
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2019)
Article
Materials Science, Composites
Libor Navratil, Vincent Le Saux, Sylvain Leclercq, Nicolas Carrere, Yann Marco
Summary: This article discusses techniques for identifying dissipative mechanisms in woven composites under cyclic loadings. The focus is on the post-processing of thermal measurements to identify dissipation sources. The importance of motion compensation pre-processing is demonstrated, and two specific post-processing techniques are presented. One analyzes temperature or thermoelastic fields to detect thermal events associated with crack creation, while the other uses Fourier decomposition of thermal fields to highlight the contribution of friction as a dissipation source.
APPLIED COMPOSITE MATERIALS
(2022)
Article
Materials Science, Composites
Libor Navratil, Vincent Le Saux, Yann Marco, Zoheir Aboura, Walid Harizi, Clement Cuniberti, Nicolas Carrere, Sylvain Leclercq
Summary: This article introduces an interlock woven composite and investigates the dissipative mechanisms and damage scenario activated under cyclic loadings through heat build-up experiments. The results show that the coupling of infrared thermometry and acoustic emission monitoring provides useful information to identify the most important dissipation sources, such as viscoelasticity, damage, and friction. By analyzing different loading sequences, the evolution of dissipation and damage during heat build-up experiments can be elaborated.
JOURNAL OF COMPOSITE MATERIALS
(2022)
Article
Engineering, Mechanical
Lorenzo Bercelli, Cedric Doudard, Sylvain Calloch, Vincent Le Saux, Julien Beaudet
Summary: Metal Additive Manufacturing allows for cost-effective fabrication of complex shapes with minimal finishing operations. However, the as-built roughness caused by layer discretization poses challenges. This study proposes an experimental method using thermoelastic stress analysis to assess the impact of surface roughness on high-cycle fatigue properties of Metal Additive Manufacturing parts.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Mechanics
L. Navratil, N. Carrere, V. Le Saux, S. Leclercq, Y. Marco
Summary: This article aims to investigate the dissipative mechanisms activated in a 3D layer-to-layer composite under low cyclic loadings by comparing numerical and experimental dissipation responses. A finite element model based on micro-computed tomography results was generated for this purpose. The simulation/experiment comparisons reveal that the proposed generalised Maxwell model accurately predicts the average dissipation for undamaged specimens, while the first experimentally detected thermal events highlight the limitations of the adopted modelling strategy.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
Ewann Gautier, Bruno Levieil, Sylvain Calloch, Anthony Ezanno, Cedric Doudard
Summary: Simplified methods for elasto-plastic calculations are an efficient solution to obtain mechanical state at the notch tip. The Adjustable Localization Operator (ALO) method has been proven to be a robust and inherently multiaxial method. This study proposes an alternative strategy to identify its parameters by considering the shape of the confined plastic zone.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Engineering, Mechanical
Vanessa Kwiatkowski, Matthieu Le Saux, Vincent Le Saux, Sylvain Leclercq, Yann Marco
Summary: This paper introduces an experimental protocol for well-controlled cyclic compression tests without anti-buckling devices and checks the uniaxiality of the global loading using kinematic and thermoelastic coupling field measurements. Then, it compares the results from fatigue and heat buildup tests for polyetheretherketone reinforced with short carbon fibers under different load ratios, showing that the fatigue lifetime is higher in compression and depends on the compression load ratio. The heat buildup approach is found to be a relevant method to quickly predict the fatigue lifetime of the material.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Proceedings Paper
Polymer Science
I. Warneboldt, F. Szmytka, I. Raoult, Y. Marco, V. Le Saux, P. Charrier, C. Champy, W. Hervouet
CONSTITUTIVE MODELS FOR RUBBER XI
(2019)
Proceedings Paper
Polymer Science
T. Glanowski, Y. Marco, V. Le Saux, B. Huneau, C. Champy, P. Charrier
CONSTITUTIVE MODELS FOR RUBBER XI
(2019)
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)