Article
Engineering, Mechanical
Andreas Hottin, Moussa Nait Abdelaziz, Abderrahim Talha, P. Charrier
Summary: The continuum damage mechanics approach allows quantifying material degradation using a damage variable D. A new equivalent stress is developed to analyze multiaxial fatigue in rubbers, which is validated through fatigue experiments on Natural Rubber and comparison with data on Styrene Butadiene Rubber. The nice agreement between experimental data and model estimates in terms of fatigue life makes this approach a robust tool for designing rubber parts.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Multidisciplinary Sciences
Miguel A. Franesqui, Ana Maria Rodriguez-Alloza, Jorge Yepes, Candida Garcia-Gonzalez
Summary: This study investigates the performance and production properties of asphalt mixtures with waste crumb-rubber modifier, warm mix asphalt surfactant additive, and residual poor-quality volcanic aggregates. The research shows that by combining these cleaner technologies, it is possible to reuse two different types of waste and decrease the manufacturing temperature, resulting in more sustainable materials. The results indicate that the rubberized warm asphalt mixtures comply with technical specifications and allow for reductions in energy consumption and emissions.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Mechanical
Xiangnan Liu, Wen-Bin Shangguan, Xuezhi Zhao
Summary: In this study, the residual fatigue life of natural rubber components under variable amplitude loads is predicted using a support vector machine (SVM) model and a nonlinear fatigue cumulative damage (NFCD) model. The experimental results demonstrate that the prediction accuracy of these models is higher than that of the traditional Miner criterion.
INTERNATIONAL JOURNAL OF FATIGUE
(2022)
Article
Engineering, Aerospace
Jingmeng Weng, Tong Meng, Weidong Wen, Shaodong Weng
Summary: This study focuses on the fatigue lives of composite laminates under different tension-torsion biaxial fatigue loading paths. By establishing a macro-meso model, the fatigue life of composite laminates can be predicted with numerical results showing good agreements with experimental data.
CHINESE JOURNAL OF AERONAUTICS
(2021)
Article
Polymer Science
Xingwen Qiu, Haishan Yin, Qicheng Xing, Qi Jin
Summary: This paper focuses on the research of fatigue damage mechanism of tire rubber materials, including designing fatigue experimental methods, building a visual fatigue analysis and testing platform, conducting fatigue experimental research, and developing theoretical modeling. The fatigue life of tire rubber materials is accurately predicted using numerical simulation technology, forming a relatively complete set of rubber fatigue evaluation means. Key findings include the establishment of standard static tensile test and fatigue failure criteria, as well as the analysis of the relationship between fatigue life, temperature, and tearing energy using crack propagation experiments and thermo-mechanical models. The accuracy of the thermo-mechanical model is verified through experimental results.
Article
Materials Science, Composites
Ali Bakhshizade, Ahmad Ghasemi-Ghalebahman, Mohammad Ali Hajimousa
Summary: In this study, multiple regression models were established to assess the fatigue life of nanoclay nanocomposites. The strain amplitude was found to have the most significant effect on fatigue life, while the nanoclay loading and test frequency had negligible effects. The interactions between factors also did not have a significant impact on fatigue life.
POLYMER COMPOSITES
(2023)
Article
Engineering, Mechanical
Gang Xue, Haojun Zhu, Sheng Xu, Wei Dong
Summary: Grinding rubber particles to prepare crumb rubber concrete (CRC) is an efficient way to recycle waste tires. In cold regions, CRC is subjected to fatigue loading and freeze-thaw cycles. The effect of freeze-thaw cycles on the fatigue strain and life of CRC was studied through experiments and theoretical analysis. The results show that the fatigue strain of CRC is unaffected by freeze-thaw cycles, and the fatigue life follows the Weibull distribution.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Mechanics
Zijiao Jia, Marie-Laetitia Pastor, Christian Garnier, Xiaojing Gong
Summary: Infrared thermography is a useful tool for rapidly determining fatigue properties. The previously proposed fatigue life model has been successfully modified and applied to CFRP laminates. The modified model shows good consistency with traditional fatigue test results and allows for the determination of S-N curves in a significantly shorter amount of time.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Chemical
Ali Bakhshizade, Ahmad Ghasemi-Ghalebahman, Mohammad Ali Hajimousa
Summary: This paper discusses the fatigue life analysis of a blend of natural rubber and styrene-butadiene rubber with and without nanoclay particles using finite element analysis. The study finds that damage parameters based on strain can effectively estimate the fatigue lives, and the predicted fatigue life matches well with the measured fatigue results. Additionally, the effect of various parameters and the fracture surface of the nanocomposite are investigated.
POLYMER ENGINEERING AND SCIENCE
(2023)
Article
Engineering, Mechanical
Hossein Salimi, Mohammad Pourgol-Mohammad, Mojtaba Yazdani
Summary: In this study, thermodynamic entropy generation is used as a degradation model for metal fatigue failure analysis. Two new entropy generation models are developed based on an analytical solution, and experiments on Al 2024-T4 specimens show that cumulative entropy generation increases with respect to the number of cycles.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Engineering, Mechanical
Srinivasan Echchur Rangarajan, Krishna Kumar Ramarathnam
Summary: The study investigates the interplay between fatigue damage and inelasticity of elastomers, revealing the non-monotonic decay of stiffness of the equilibrium network with fatigue life and suggesting an interaction between damage and inelasticity. However, no trend indicative of the effect of damage on viscoelasticity was found.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Construction & Building Technology
Miaoyan Liu, Jun Lu, Wenhao Jiang, Pan Ming
Summary: In order to understand the crack propagation process and damage mechanism of rubber concrete under fatigue loading, fatigue tests were conducted on plain concrete beams and rubber concrete beams with precast cracks, and the loading process was monitored in real time using acoustic emission. The results showed that the addition of rubber increased the maximum deformation of rubber concrete under fatigue load, resulting in increased fatigue life and fracture energy. Acoustic emission signals confirmed that there was a hysteresis effect between cracks and loads due to the lag in energy transfer. The incorporation of rubber particles also reduced variations in stress strength factors. The b-value of acoustic emission reflected the damage state and crack development of the concrete, and a reduction to 0.8 could be used as an early warning indicator of structural failure.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Computer Science, Interdisciplinary Applications
Kai Zhao, Chunhe Yang, Hongling Ma, J. J. K. Daemen
Summary: A new creep-fatigue model for rock salt was proposed and validated through tests and simulations. Additionally, a three-dimensional geotechnical model was developed to analyze the deformation of CAES salt caverns during operation.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Materials Science, Characterization & Testing
Manabu Okui, Akihiro Kojima, Itsuki Hisamichi, Shotaro Kuriyama, Tomohisa Kojima, Tomoaki Tsuji, Taro Nakamura
Summary: This study proposes a novel method for extending the fatigue life of rubber materials by utilizing the hysteresis of strain-induced crystallization characteristics. The results confirm that the fatigue life can be prolonged by approximately 100 times using this method.
Article
Materials Science, Textiles
Xiaoming Yu, Bin Zhang, Boqin Gu
Summary: This paper presents an experimental and theoretical study of aramid fiber reinforced rubber sealing composites (AFRC). The fatigue performance of AFRC under different conditions was tested and observed, leading to the proposal of fatigue damage modes and theoretical models. The accuracy and reliability of the models were verified through analysis and comparison with experimental results, showing the advantage of the proposed models in evaluating the fatigue behavior of AFRC.
FIBERS AND POLYMERS
(2021)
