Article
Polymer Science
Mohd Khairul Rabani Hashim, Mohd Shukry Abdul Majid, Mohd Ridzuan Mohd Jamir, Farizul Hafiz Kasim, Mohamed Thariq Hameed Sultan, Ain Umaira Md Shah, Kamarul Arifin Ahmad, Adi Azriff Basri
Summary: This study investigated the fatigue behavior of pineapple leaf fiber/carbon hybrid laminate composites with different stacking sequences. The results showed that the laminate with specific stacking sequence PCCP_45090 exhibited the highest tensile strength and outstanding fatigue performance. The study also found that the ply orientations significantly influenced the fatigue behavior of the composites.
Article
Green & Sustainable Science & Technology
Hassan Alshahrani, V. R. Arun Prakash
Summary: This study developed a high toughness biocomposite cleaner production material for advanced engineering applications. The research focused on understanding the effect of adding high cellulose content corn husk fibre and sustainable orange peel biochar on the mechanical properties of the epoxy based clear production composite material. It was found that the composite with 2 vol% orange peel biochar and 40 vol% high content cellulosic corn husk fibre exhibited the highest storage modulus and the lowest loss factor. The presence of cellulose content in the fibre improved the toughness and reduced brittleness of the epoxy.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Mechanics
Dong Quan, Neal Murphy, Alojz Ivankovi, Guoqun Zhao, Rene Alderliesten
Summary: The study demonstrates that interleaving thermoplastic veils can significantly improve the fatigue life of carbon fiber/epoxy composites, with fatigue resistance energy increasing by 143% and 190% for UD and NCF laminates, respectively. The toughening mechanisms of thermoplastic veils are influenced by various factors in the laminates.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Sofia Fries, Karl Burkamp, Christoph Broeckmann, Silvia Richter, Heinz Westermann, Bruno Suess
Summary: The study investigated the influence of carbon content on the fatigue strength of fine grade cemented carbides, finding that no significant impact was observed unless graphite precipitations occur. Analysis of the chemical composition of the binder phase revealed no significant influence of the global carbon content on the morphology of WC-grains or the local carbon content in the cobalt-binder.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Engineering, Mechanical
Selim Mrzljak, Lars Gerdes, Jan Keuntje, Verena Wippo, Peter Jaeschke, Frank Walther
Summary: This study investigates the effects of laser cutting on the fatigue properties of carbon fibre-reinforced polymers. The results show that the width of the specimens and process parameters have an impact on the fatigue properties, highlighting the importance of understanding heat induction and the detection of inflicted laminate damage.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2022)
Article
Materials Science, Ceramics
Dheeraj Kumar Gara, Gujjala Raghavendra, P. Syam Prasad, S. Ojha
Summary: The research found that reduced functional group density graphene has good adhesion and enhancement effects in composite materials, making it suitable for structural applications in aerospace industry.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Applied
Akos Pomazi, Andrea Toldy
Summary: The research focuses on developing multifunctional, flame retarded epoxy gelcoat formulations using phosphorus-containing intumescent flame retardant. The study found that epoxy resin-based gelcoats with ammonium polyphosphate (APP) exhibited superior thermal stability, especially with increased APP concentration leading to enhanced thermal stability and limiting oxygen index.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Construction & Building Technology
Jing Sun, Ali Daliri, Guoxing Lu, Dongying Liu, Fukun Xia, Ao Gong
Summary: The study investigated the tensile behavior of titanium-based carbon-fibre/epoxy laminates (TI-CF FMLs) under quasi-static loading, analyzing twelve different configurations of FMLs and their constituent materials in a comprehensive experimental study. Through a parametric study, the effects of metal types, volume fractions, and fiber orientations on the specific tensile performance of TI-CF FMLs were investigated, providing more insights into the design of TI-CF FMLs under tension.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Manufacturing
A. Dutta, M. K. Hagnell, M. Akermo
Summary: This study investigates the influence of fibre orientation on interply friction. Interply friction tests were conducted on a unique snap-cure unidirectional carbon/epoxy prepreg, with five different fibre orientations. The results demonstrate that fibre orientation significantly affects interply friction, with substantial variations in magnitude and behavior of the friction curves for different fibre orientation combinations. It is suggested that direction-dependent friction models should be incorporated in forming simulations, and the findings offer opportunities for optimizing laminate stacking sequences for better forming outcomes.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Polymer Science
Monica Penas-Caballero, Enrico Chemello, Antonio Mattia Grande, Marianella Hernandez Santana, Raquel Verdejo, Miguel A. A. Lopez-Manchado
Summary: Self-healing materials offer a potential solution to the problem of damage to fibre-reinforced plastics (FRPs). By using poly(methyl methacrylate) (PMMA) as a self-healing agent, the study explores its effectiveness when blended with the matrix or applied as a coating to carbon fibres. The results show that blending strategy does not enable healing capacity, while coating the fibres with PMMA achieves up to 53% fracture toughness recovery.
Article
Engineering, Civil
Jing Sun, Shanqing Xu, Guoxing Lu, Qing Wang, Ao Gong
Summary: This paper extensively investigates the high-velocity impact resistance of lightweight laminates composed of carbon-fibre/epoxy layers sandwiched by titanium alloy skins and aluminium alloy skins. The ballistic limit of the laminates is estimated to be between 241.6 m/s and 257.1 m/s. The impact velocity governs the energy absorption and damage modes. Experimental investigations on the influence of fibre metal laminates configuration show that thicker skins and higher number of fibre layers enhance the specific energy absorption.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Manufacturing
Anil R. Ravindran, Raj B. Ladani, Anthony J. Kinloch, Chun-Hui Wang, Adrian P. Mouritz
Summary: This study investigates the multi-scale toughening mechanisms for enhancing the fracture toughness, impact damage resistance, and compression-after-impact strength of carbon fiber-epoxy composite laminates by using carbon nano- and micro-fillers. It was found that a synergistic increase in mode II toughness was achieved when carbon nanofibers were combined with short carbon fibers, leading to improvements in impact damage resistance and CAI strength. The key toughening mechanisms provided by the fillers were identified through analyses and scanning electron microscopy.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Mechanics
Shijun Chen, Xuewen Cao, Lei Zu, Jingxuan He, Qian Zhang, Ping Ren, Guiming Zhang, Qiaoguo Wu, Jianhui Fu, Lichuan Zhou
Summary: This article conducted high-temperature pyrolysis recycling experiments on carbon fiber filaments to improve the mechanical properties of recycled carbon fibers. The influence of residual resin content and fiber oxidation on tensile properties was revealed, and process parameters were optimized for high temperature pyrolysis recycling of resin-matrix carbon fiber composites. The results showed that temperature had the greatest influence, a small amount of resin residue helped improve tensile strength, and pyrolysis time had a parabolic relationship with tensile strength.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Kirill Khraponichev, Daniele Incerti, Declan Carolan, Alexander Fergusson
Summary: This study found that introducing phase-separating rubber can significantly increase the fracture energy of bulk epoxy polymers, but curing at higher rates can lead to reduced toughness. Additionally, the increase in toughness of composite laminates is limited, as it is difficult to transfer toughness from bulk polymers to fibre-reinforced polymers.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Materials Science, Composites
Haoqi Zhang, Ka Zhang, Aonan Li, Lei Wan, Colin Robert, Conchur M. O. Bradaigh, Dongmin Yang
Summary: This paper presents an experimental study on 3D printing of continuous carbon fibre reinforced thermoset epoxy composites. The study shows that the produced composites have high tensile strength and modulus in the fibre direction due to the good wettability of epoxy and high fibre volume fraction. The study also demonstrates the design freedom of the produced filaments for complex geometries and the improved strength of composites with designed stress-lines fibre paths.
COMPOSITES COMMUNICATIONS
(2022)
Article
Polymer Science
Julia Beter, Bernd Schrittesser, Boris Maroh, Essi Sarlin, Peter Filipp Fuchs, Gerald Pinter
Article
Materials Science, Characterization & Testing
Anja Gosch, Florian J. Arbeiter, Silvia Agnelli, Michael Berer, Gerald Pinter, Francesco Baldi
Article
Mechanics
Gerald Pilz, Peter Guttmann, Florian Oesterreicher, Gerald Pinter
MECHANICS OF TIME-DEPENDENT MATERIALS
(2020)
Article
Polymer Science
Mario Messiha, Andreas Frank, Thomas Koch, Florian Arbeiter, Gerald Pinter
INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION
(2020)
Article
Chemistry, Physical
Chao Wang, Shabnam Z. Bonyadi, Florian Gruen, Gerald Pinter, Andreas Hausberger, Alison C. Dunn
Article
Polymer Science
Julia Beter, Bernd Schrittesser, Bernhard Lechner, Mohammad Reza Mansouri, Claudia Marano, Peter Filipp Fuchs, Gerald Pinter
Article
Polymer Science
Julia Beter, Boris Maroh, Bernd Schrittesser, Inge Muehlbacher, Thomas Griesser, Sandra Schloegl, Peter Filipp Fuchs, Gerald Pinter
Summary: This study investigates the effect of surface treatments on glass fibers in endless fiber-reinforced elastomers under high deformations. The results demonstrate that optimized surface treatments significantly enhance interface strength and chemical bonding, providing a basis for improved performance at the component level.
Article
Chemistry, Physical
Anastasiia Khudiakova, Andreas J. Brunner, Markus Wolfahrt, Gerald Pinter
Summary: In this study, unidirectional carbon fiber reinforced thermoplastic laminates were produced using Automated Tape Placement with In-Situ Consolidation (ATPisc) and tested for interlayer bonding with mode I fatigue fracture tests. Various data analysis methodologies were applied to quantitatively assess the fracture behavior of the laminates, revealing the Hartman-Schijve based approach as a convenient method for presenting fatigue crack growth curves. Additionally, a 'zero-fiber bridging' methodology was attempted to eliminate the effect of additional damage processes on fatigue crack growth.
Article
Chemistry, Physical
Mario Messiha, Andreas Frank, Jan Heimink, Florian Arbeiter, Gerald Pinter
Summary: Thermoplastic materials have a reputation for long-term reliability in low-pressure gas and water distribution pipe systems, but concerns remain regarding Slow Crack Growth (SCG) and Rapid Crack Propagation (RCP) failures. The study investigated the RCP resistance of five different polyamide (PA) 12 grades using the ISO 13477 Small-Scale Steady State (S4) test, revealing structure-property relationships that can be used for more efficient evaluation of each grade.
Article
Polymer Science
Janez Slapnik, Thomas Lucyshyn, Gerald Pinter
Summary: This study investigated the performance of different renewable fibres under high temperature processing conditions, finding that Lyocell fibres exhibit the best reinforcement effect at elevated temperatures.
Article
Chemistry, Physical
Gernot Oreski, Gerald Pinter
Summary: This paper presents a practical peel test set-up that overcomes the issues of standard peel tests and provides more accurate results by avoiding the influence of sample geometry and energy dissipation.
Article
Chemistry, Physical
Jacopo Schieppati, Bernd Schrittesser, Stefano Tagliabue, Luca Andena, Armin Holzner, Jan Poduska, Gerald Pinter
Summary: The study of fatigue behavior and fracture mechanics of filled non-crystallizing elastomers revealed a power law behavior, distinct regions on fracture surfaces, and the impact of notches on fatigue life.
Article
Chemistry, Physical
Janez Slapnik, Yuanxi Liu, Robert Kupfer, Thomas Lucyshyn, Blaz Nardin, Gerald Pinter
Summary: This study introduces a novel polymer processing approach that combines low-temperature processing and fibre direct compounding to reduce thermal stress on thermosensitive components during compounding and injection moulding. The composites prepared using this new method showed improved tensile and storage modulus, despite exhibiting worse fiber dispersion and lower fiber degradation.
Article
Polymer Science
Janez Slapnik, Gregor Kraft, Thomas Wilhelm, Marcel Hribernik, Iztok Svab, Thomas Lucyshyn, Gerald Pinter
Summary: This study investigated the influence of viscose fibre geometry on the microstructures and resulting properties of high-density polyethylene (HDPE) composites. The composites prepared using cylindrical fibres with a linear density of 1.7 dtex exhibited the best fibre dispersion, highest orientation, and lowest fibre-fibre contact area.
Article
Materials Science, Composites
Andreas Primetzhofer, Gabriel Stadler, Gerald Pinter, Florian Gruen
Summary: This study highlights the importance of considering the local micro-structure in the data set determination for short fiber reinforced polymers using model calibration and data set determination methods. The research involved quasi-static and cyclic tests on specimens with different fiber orientations, as well as micro CT measurements to determine local fiber orientation. The results showed a significant influence of local micro-structure on the calculation results, emphasizing the necessity of incorporating this factor in lifetime assessment of parts made of fiber-reinforced polymers.
JOURNAL OF COMPOSITES SCIENCE
(2021)
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)
