Article
Materials Science, Characterization & Testing
Hongliang Tuo, Tao Wu, Zhixian Lu, Xiaoping Ma
Summary: This study investigates the damage evolution and failure mechanism of impacted laminates under fatigue loadings, revealing that the evolution of damage area can be divided into two stages.
Article
Mechanics
Zijiao Jia, Christian Garnier, Marie-Laetitia Pastor, Jerome Rousseau, Xiaojing Gong
Summary: This paper investigates the static and fatigue behaviors of MD CFRP laminates with impact damage under compression. The influence of interface distribution on compression after impact and post-impact compression fatigue properties is evaluated. Visual and optical observation, ultrasonic C-scan inspection, and thermographic approach are used to assess damages and determine fatigue limits. Experimental results show similar impact responses, residual strengths, overall damage modes, fatigue limits, and predicted S-N curves among laminates with different stacking sequences, despite slight variations in crack propagation and orientation under static and cyclic loads.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Geological
T. Junique, P. Vazquez, Y. Geraud, C. Thomachot-Schneider, H. Sidibe
Summary: The study aimed to assess the behavior of granitoids with different porosities under various thermal treatments. Results showed that porosity has a greater impact on thermal behavior than mineralogy, with high-porosity granitoids developing microcracks between 90°C and 130°C.
ENGINEERING GEOLOGY
(2021)
Review
Materials Science, Multidisciplinary
Rui Guo, Chenggao Li, Yanzhao Niu, Guijun Xian
Summary: This review paper provides the most relevant and up-to-date information on the fatigue of Carbon Fiber Reinforced Polymer (CFRP) composites, including the factors influencing fatigue performance, fatigue damage mechanism, and characterization methods. The research results show that material constituents, service environments, and cyclic loads significantly affect the fatigue performances of CFRP composites. The fatigue damage mechanism of CFRP composites is complex and requires the establishment of theoretical prediction models.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Mechanics
Aiguo Zhao, Jijia Xie, Yingxin Zhao, Chuang Liu, Junchen Zhu, Guian Qian, Shuguang Wang, Youshi Hong
Summary: The study showed that in the evaluation of fatigue limit of high strength steel, the presence of grain boundaries can affect the strength performance.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Mechanics
Ryoma Aoki, Ryo Higuchi, Tomohiro Yokozeki
Summary: In this study, open-hole tensile fatigue tests were conducted on carbon-fiber-reinforced polymer laminates using thin-ply prepregs to investigate the effects of varying ply thickness. Fatigue damage growth around a circular hole was evaluated through X-ray radiography, and the effect of fatigue damage on residual strength was assessed through static tensile tests. The results demonstrated that thin-ply laminates can suppress fatigue damage growth and retain residual strength under high-cycle fatigue, confirming their superiority over thick-ply laminates.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Mechanical
Zijiao Jia, Marie-Laetitia Pastor, Christian Garnier, Xiaojing Gong
Summary: A new fatigue limit determination method based on thermographic data is proposed in this paper to overcome the limitations of Risitano and Luong's method. The fatigue limit is defined as the maximum stress corresponding to the peak value of the angle change normalized by its amplitude. The evaluation of this method using experimental data of Multidirectional CFRP laminates and literature data for different materials shows that it can effectively determine the fatigue limit of composite laminates regardless of their stacking sequence.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Optics
Yu Tokizane, Takayoshi Yamaguchi, Takeo Minamikawa, Eiji Hase, Kenzo Yamaguchi, Akihiro Suzuki, Takao Ueda, Takeshi Yasuo
Summary: In this study, an ultralow-frequency, ultranarrow-bandwidth, coherent terahertz imaging system based on THz-TDS was constructed for nondestructive testing of concrete materials. The system achieved a wide dynamic range of THz power and high resolution, enabling visualization of the inner structure of thick concrete structures.
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
Biology
Willian da Silva, Alvaro Sosa Machado, Andressa Lemes Lemos, Camilla Ferreira de Andrade, Jose Ignacio Priego-Quesada, Felipe P. Carpes
Summary: This study revealed the relationship between exercise-induced muscle soreness, pain, and skin temperature changes, as well as the gender-specific effects on skin temperature variations. Differences between men and women were observed in DOMS and PPT, while skin temperature responses also varied by sex.
JOURNAL OF THERMAL BIOLOGY
(2021)
Article
Materials Science, Characterization & Testing
Zongfei Tong, Liangliang Cheng, Shejuan Xie, Mathias Kersemans
Summary: Infrared thermography (IRT) is a promising technique for defect detection in various materials. This study proposes an object detection algorithm based on Faster R-CNN for efficient extraction of defect features from IRT images. A virtual thermographic dataset for composite materials was constructed using a parameterized 3D finite element simulator. The deep learning framework trained on this dataset achieved high performance in the automated thermographic inspection of composite parts.
NDT & E INTERNATIONAL
(2023)
Article
Engineering, Multidisciplinary
A. H. Mirzaei, M. M. Shokrieh
Summary: Thermography is used to evaluate the residual life of laminated composites under fatigue loading, but it may not provide detailed information on temperature rise and fatigue damage in each ply of laminated composites with stress concentration. This study modifies and improves the Self-Heating model to simulate the evolution of temperature rise and fatigue damage in laminated composites with stress concentrations, and verifies the results through extensive experiments. The present model successfully simulates the cycle-by-cycle temperature distribution and damage states in each ply of laminated composites under fatigue loading.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Mechanics
Julien Berthe, Salim Chaibi, Gerald Portemont, Pascal Paulmier, Frederic Laurin, Christophe Bouvet
Summary: This study focuses on real-time measurement of different damage mechanisms during low velocity/low energy impact tests using high-speed infrared thermography. Various post-mortem observation techniques are used for validation and determination of the chronology of damage events identified with infrared thermography measurements. The comparison with other classical post-mortem measurement methods shows that IR thermography tends to overestimate the extent of damage.
COMPOSITE STRUCTURES
(2023)
Article
Computer Science, Interdisciplinary Applications
Muhammad Faiz Md Shakhih, Nursyazana Ridzuan, Asnida Abdul Wahab, Nurul Farha Zainuddin, Laila Fadhillah Ulta Delestri, Anis Suzziani Rosslan, Mohammed Rafiq Abdul Kadir
Summary: This study investigated the correlation between surface temperature and muscle activation parameters obtained using both IRT and sEMG methods simultaneously, finding significant correlations between average temperature with RMS and between temperature difference with MF values. It suggested that skin surface temperature can be utilized in monitoring and predicting muscle fatigue, especially in low intensity dynamic exercise.
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING
(2021)
Article
Nanoscience & Nanotechnology
V. V. Shastry, Gaurav Singh, U. Ramamurty
Summary: The study demonstrates that periodic "healing" treatment during fatigue testing of shape memory alloys can effectively extend the fatigue life of the alloy, with 20% of the life elapsed being the optimal treatment time point. Different timing of healing treatment affects the effectiveness of improving fatigue life, indicating irreversible damage has already occurred.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Mechanics
Aram Bahmani, Geng Li, Thomas L. Willett, John Montesano
COMPOSITE STRUCTURES
(2019)
Article
Engineering, Multidisciplinary
M. Nikforooz, J. Montesano, M. Golzar, M. M. Shokrieh
COMPOSITES PART B-ENGINEERING
(2019)
Article
Materials Science, Characterization & Testing
Aleksandr Cherniaev, Yu Zeng, Duane Cronin, John Montesano
Article
Materials Science, Multidisciplinary
Aram Bahmani, Patricia A. Comeau, John Montesano, Thomas L. Willett
MATERIALS & DESIGN
(2019)
Article
Engineering, Manufacturing
Eleazar A. Trejo, Mehdi Ghazimoradi, Clifford Butcher, John Montesano
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2020)
Article
Mechanics
Daniel Dapaah, Raphael Badaoui, Aram Bahmani, John Montesano, Thomas Willett
ENGINEERING FRACTURE MECHANICS
(2020)
Article
Materials Science, Composites
Khizar Rouf, Michael J. Worswick, John Montesano
Summary: This study evaluated the effects of manufacturing induced misalignment and crimp on heavy-tow non-crimp fabric composites, predicting properties using multiscale computational approaches. The real model showed excellent agreement with experimental data in predicting lamina stiffness, demonstrating the feasibility of accurately predicting mechanical properties by incorporating micro-structural defects.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Chemistry, Physical
Khizar Rouf, Aaditya Suratkar, Jose Imbert-Boyd, Jeffrey Wood, Michael Worswick, John Montesano
Summary: The study characterized the strain rate-dependent behavior of a UD-NCF carbon fiber/snap-cure epoxy composite loaded in the transverse direction under different strain rates, revealing higher tensile and compressive strength at high strain rates. Distinct localized fracture surfaces were observed for specimens tested at different strain rates, while the initial fracture plane orientation in transverse compression tests was found to increase with increasing strain rate.
Article
Materials Science, Composites
Farzad Sharifpour, John Montesano, Ramesh Talreja
Summary: Three-dimensional computational micromechanical models were developed to study local failure mechanisms and early-stage ply crack formation in a carbon fiber/epoxy cross-ply laminate under tensile loading. The effects of ply constraints on energy densities in the matrix were evaluated. Brittle cavitation was found to be the dominating failure mechanism, while local inelastic deformation indirectly influenced the number and location of cavitation sites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Mechanics
Khizar Rouf, Michael J. Worswick, John Montesano
Summary: A new hierarchical dual-scale modelling framework is developed to predict the strain rate-dependent nonlinear deformation response of a unidirectional non-crimp fabric carbon fiber/snap-cure epoxy composite. The model considers tension-compression asymmetry and anisotropic yield function to accurately predict the stress-strain response.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Aram Bahmani, Ramin Yousefi Nooraie, Thomas L. Willett, John Montesano
Summary: A new non-uniform sequential mobile packing (NSMP) algorithm with efficient collision detection scheme was developed to generate representative volume elements (RVEs) for heterogeneous and/or composite materials with different microstructural characteristics. Statistical analysis showed that the NSMP algorithm generated RVEs with realistic microstructures. Finite element micromechanical modeling revealed that the microstructure with a combination of aligned and misoriented rod inclusions was the most representative for a 3D-printed nanocomposite material.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
M. Ghazimoradi, J. Montesano
Summary: A macroscopic forming simulation model using anisotropic hyperelastic material model *MAT_249 was developed for binder stabilized carbon fiber unidirectional non-crimp fabric (UD-NCF). The model accurately captured in-plane shear-extension coupling often neglected by other models. Wrinkling behavior and force-displacement response of hemispherical tests were accurately predicted by the model, demonstrating its ability to capture high in-plane shear deformations and low out-of-plane bending stiffness. However, the model had limitations in capturing shear angle accurately due to its inability to explicitly capture local deformations.
APPLIED COMPOSITE MATERIALS
(2023)
Article
Mechanics
Celine Lauff, Matti Schneider, John Montesano, Thomas Boehlke
Summary: We propose an algorithm, the orientation corrected shaking (OCS) method, for generating short fiber-reinforced microstructures with almost planar fiber orientation. The algorithm achieves high accuracy in terms of volume fraction, fiber length distribution, and fiber orientation state. It can also generate microstructures for industrial materials, such as a PA66GF35 material with a volume fraction of 19.3% and an aspect ratio of 33. We extend the two-step shaking algorithm for a user-selected rectangular size of the unit cell and periodic boundary conditions, and improve the precise realization of the fiber orientation state. The OCS method shows representative errors below 2% and 9% for computed directional Young's moduli E1 and E2, respectively, when applied to an industrial PA66GF35 material with a sandwich structure, compared to experimental data.
COMPOSITE STRUCTURES
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
Daniel Dapaah, Aram Bahmani, John Montesano, Thomas L. Willett
MATERIALS TODAY-PROCEEDINGS
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
Aram Bahmani, Geng Li, Thomas L. Willett, John Montesano
MATERIALS TODAY-PROCEEDINGS
(2019)
Article
Engineering, Multidisciplinary
Keyu Zhu, Xitao Zheng, Jing Peng, Jiaming Sun, Ruilin Huang, Leilei Yan
Summary: This paper discusses the influence of multiple impacts on the compression strength of honeycomb sandwich structures with composite face sheets. It is found that the size of the impactor affects the turning point of the compression strength. Additionally, high impact energy leads to damage in the bottom face sheet and reduces the overall compression strength.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Danqian Wang, Yanfei Yue, Jueshi Qian
Summary: Magnesium Potassium Phosphate Cement (MKPC) as a binder for steel rebars shows improved corrosion resistance when subjected to carbonation, due to the increase in pH and the formation of a more protective oxide film.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Zhibin Li, Wenyu Wang, Pengcheng Xue, Xingyu Wei, Jian Xiong
Summary: This work proposes a design approach and manufacturing method for carbon fiber reinforced plastic (CFRP) corrugated sandwich truncated cones (CSTC) to improve their anti-debonding ability and ensure reliability. The study establishes theoretical models for CSTCs' stiffness and failure modes, which are verified through experiments and finite element analysis (FEA). The research reveals the effect of geometric parameters on failure modes and performs an optimal design for CSTC structures. The findings have significant implications for the design and application of lightweight CSTCs in constructions, such as launch vehicle adapters.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mingyu Zhang, Lei Chu, Jiahua Chen, Fuxun Qi, Xiaoyan Li, Xinliang Chen, Deng-Guang Yu
Summary: This review summarizes the different structures and construction methods of fibrous membranes with asymmetric wettability. It also reviews the biological applications of these membranes and suggests future challenges.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
E. Mofakhami, L. Gervat, B. Fayolle, G. Miquelard-Garnier, C. Ovalle, L. Laiarinandrasana
Summary: This study investigates the effects of fibre concentration on the mechanical response of welded glass-fibre-reinforced polypropylene (GF-PP). Experimental observations reveal a significant reduction in weld ratio, up to 60%, indicating a decreased strength compared to the bulk material. Increasing fibre content in the welded material results in a decrease in stress at break and strain at the maximum stress. The use of DIC technique and X-ray microtomography further confirms the localized strain amplification in the welded zone due to the significant increase in fibre density.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Emad Pourahmadi, Farjad Shadmehri, Rajamohan Ganesan
Summary: This research compares the mechanical properties of laminates manufactured using automated fiber placement and conventional autoclave curing methods. The results show that laminates manufactured using automated fiber placement have a lower interlaminar shear strength compared to laminates reconsolidated using autoclave curing. A finite element simulation method is proposed to quantitatively analyze these differences.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Johnny Jakobsen, Benny Endelt, Fahimeh Shakibapour
Summary: This study proposes a new bolted/pinned joining method for composite applications, which improves load transfer by introducing a patch-type reinforcement. Experimental results demonstrate significant improvements in both static and fatigue load conditions compared to existing methods. Finite element simulations highlight the advantage of this method, as it creates a more efficient load-transferring mechanism through different stress distributions.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Gisele G. Cintra, Janine D. Vieira, Daniel C. T. Cardoso, Thomas Keller
Summary: This paper proposes a novel approach to assess multi-crack behavior in layered fiber-polymer composites. The generated Compliance and R-curves provide useful insights into understanding the multiple delamination process and allow for separate evaluation of strain energy release rate (SERR) for each crack. The developed cohesive zone model successfully simulates the failure process zone of three parallel cracks, showing good agreement between the numerical model and experimental results.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Renil Thomas Kidangan, Sreedhar Unnikrishnakurup, C. Krishnamurthy, Krishnan Balasubramaniam
Summary: The induction heating process can accurately identify fiber orientation and stacking order, making it a valuable tool for large-area inspection and quality control in manufacturing fiber-reinforced composites.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Sungjun Hwang, Yousoo Han, Douglas J. Gardner
Summary: Bleached Kraft pulp, unbleached Kraft pulp, and old corrugated cardboard pulp are suitable for producing cellulose nanofibril suspensions. Spray drying is a fast, simple, cost-effective, and scalable drying method. Spray-dried cellulose nanofibrils can be used as reinforcing materials in polypropylene matrices. The particle size of cellulose nanofibrils affects the material properties.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mehdi Mahdavi, Abbas Zolfaghari
Summary: This study aims to improve the recovery forces of shape memory polymers (SMPs) through material extrusion additive manufacturing. By using glass fiber (GF) as reinforcement and manufacturing multi-layer composite specimens, it was found that PLA with 6.62% GF exhibited the best recovery force, which was further optimized through annealing heat treatment.
COMPOSITES PART B-ENGINEERING
(2024)
Review
Engineering, Multidisciplinary
Xiang Ao, Antonio Vazquez-Lopez, Davide Mocerino, Carlos Gonzalez, De-Yi Wang
Summary: The vulnerability of natural fibers to heat and fire poses a significant challenge for their substitution of traditional fiber reinforcements in composite materials. Natural fiber/polymer composites (NFCs) are regarded as potential candidates for engineering applications due to their environmental friendliness and low-impact sourcing. Thus, appropriate approaches need to be implemented to enhance the fire safety of NFCs. This review summarizes and discusses the latest understanding of flammability and thermal properties of natural fibers, with a special focus on their interaction with polymer matrix in fire behavior. Additionally, the latest developments in flame-retardant approaches for NFCs are reviewed, covering both flame retardancy and fire structural integrity. Finally, future prospects and perspectives on fire safety of NFCs are proposed, providing insights into further advancements of NFCs.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Cheng Wang, Siqi Huo, Guofeng Ye, Bingtao Wang, Zhenghong Guo, Qi Zhang, Pingan Song, Hao Wang, Zhitian Liu
Summary: The demand for multifunctional, transparent epoxy resin with superior dielectric, mechanical, and fire-safety performances is increasing in modern industries. Researchers have developed an epoxidized, phosphaphenanthrene-containing poly(styrene butadiene styrene) (ESD) for advanced fire-safe epoxy resin, which maintains high transparency and improves UV-blocking property. The addition of 10 wt% ESD results in improved mechanical properties, decreased dielectric constant and loss, and outperformance compared to other fire-safe epoxy resins. This research provides an effective method for developing multifunctional flame-retardant epoxy resin.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Bo Pang, Heping Zheng, Zuquan Jin, Dongshuai Hou, Yunsheng Zhang, Xiaoyun Song, Yanan Sun, Zhiyong Liu, Wei She, Lin Yang, Mengyuan Li
Summary: This study develops an internal superhydrophobic material (ISM) using waste denitrification fly ash, which maintains stable hydrophobicity under harsh conditions of use and does not rely on expensive fluor-based surface modifications. The synthesized ISM has excellent matrix strength, strong waterproof properties, and retains superhydrophobicity even at damaged or friction interfaces.
COMPOSITES PART B-ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Meirbek Mussatayev, Qiuji Yi, Mark Fitzgerald, Vincent K. Maes, Paul Wilcox, Robert Hughes
Summary: Real-time monitoring of carbon fibre composites during Automated Fibre Placement (AFP) manufacturing remains a challenge for non-destructive evaluation (NDE) techniques. This study designed a directional eddy-current (EC) probe to evaluate the detectability of out-of-plane wrinkles. Experimental evaluations and finite element modeling were conducted to better understand the relationship between eddy-current density and defect detection. The findings suggest that the probe configuration with an asymmetric driver coil and differential pickup coils shows the best capability for wrinkle detection.
COMPOSITES PART B-ENGINEERING
(2024)