Article
Engineering, Mechanical
B. Vieille, J. -d. Pujols-Gonzalez, C. Bouvet
Summary: This study investigated the failure of quasi-isotropic fibers reinforced thermoplastic laminates solicited at different testing temperatures, and found that temperature significantly affects the mixed mode fracture toughness.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Engineering, Manufacturing
Somen K. Bhudolia, Goram Gohel, Durga Vasudevan, Kah Fai Leong, Pierre Gerard
Summary: This study investigates the Mode II fracture toughness of room temperature curable acrylic Elium(R) resin and toughened Elium(R) IM with 10% weight ABS particles. Different thermoplastic fabrics including UHMWPE, UHMWPP, and polyester are tested. The findings show that the GIIC of UHMWPP/Elium(R) IM composite is 33.3% higher than that of UHMWPP/Epoxy composite. Polyester/Elium(R) composites have 27.02% higher GIIC than Polyester/Epoxy composites, while Polyester/Elium(R) IM composites exhibit the highest GIIC which is 17.76% higher than Polyester/Elium(R) composites. Fractography analysis reveals significant crack resistance and toughening mechanisms in toughened Elium(R) IM composites.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
Ming Lei, Shuailong Ren, Shiyu Wang, Zeang Zhao, Jinyou Xiao, Lihua Wen, Xiao Hou
Summary: In this study, a multiscale model was developed to investigate the formation and failure of thermoplastic interfaces. By considering the reptation behavior and chain scission of polymer chains, the evolution of interface strength during composite welding process was successfully predicted.
MECHANICS OF MATERIALS
(2022)
Article
Materials Science, Composites
Lode Daelemans, Olivier Verschatse, Lisa Heirman, Wim Van Paepegem, Karen De Clerck
Summary: The addition of electrospun thermoplastic nanofibers is a viable toughening strategy for designing nanofiber reinforced epoxy materials with excellent toughness, particularly polyamide and polycaprolactone nanofibers can increase the plastic energy uptake up to 100%. The main energy-absorbing mechanism was found to be bridging nanofibers, although a lack of adhesion with the matrix resulted in a decrease in toughening efficiency, especially when oriented parallel with the crack growth direction. The study provides insights for material design in applications requiring high toughness such as adhesives, coatings, and fiber-reinforced composite laminates.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
K. Saravanakumar, C. Suresh Kumar, V Arumugam
Summary: The study demonstrated that changing the interply fiber orientation can significantly enhance the interlaminar fracture toughness and delamination resistance. The diversion of crack path along the fiber orientation offers more resistance to crack propagation, leading to an increase in fracture toughness. Furthermore, the calculation of sentry function enables the evaluation of delamination resistance.
STRUCTURAL HEALTH MONITORING-AN INTERNATIONAL JOURNAL
(2021)
Article
Engineering, Multidisciplinary
Gisele G. Cintra, Janine D. Vieira, Daniel C. T. Cardoso, Thomas Keller
Summary: This paper investigates the interlaminar fracture of pultruded glass fiber-polymer structural members and proposes a testing methodology. The results show that the Modified Beam Theory method performs the best for crack propagation in Mode I, while the Corrected beam theory using effective crack length and the Experimental compliance method yield differences lower than 1% from experiments in Mode II.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Christopher Meninno, Vijaya Chalivendra
Summary: The study investigated the impact of different laminate orientations on mode-I and mode-II fracture toughness, as well as the correlation between fracture toughness values and scanning electron microscopy images. The results showed that C-0-G-90 composites exhibited higher mode-I fracture toughness, while G-0-C-90 composites showed higher mode-II fracture toughness. The electrical response was found to be closely related to crack dynamics.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Polymer Science
Somen K. Bhudolia, Goram Gohel, Durga Vasudevan, Kah Fai Leong, Pierre Gerard
Summary: This research studied the delamination behavior of hybrid carbon-thermoplastic fabrics in conjunction with liquid thermoplastic acrylic Elium (R) resin under Mode I and Mode II loading. The experimental results showed that the hybrid fiber reinforced thermoplastic composites exhibited improved delamination behavior compared to carbon-epoxy composites. However, the hybrid fiber architecture was found to have detrimental effects on the delamination behavior.
Article
Engineering, Manufacturing
Somen K. Bhudolia, Goram Gohel, Durga Vasudevan, Kah Fai Leong, Pierre Gerard
Summary: This research examines the manufacturing and bonding characteristics of wholly thermoplastic composites using thermoplastic fibers and acrylic Elium® resin, as well as toughened Elium® IM with 10% weight ABS particles, under Mode I loading. The composites showed higher critical energy release rate compared to epoxy composite systems, with UHMWPP/Elium® IM and UHMWPP/Elium® composites showing the highest increase. Microscopic examination revealed various characteristics such as fiber bridging, pull-out, strong fiber-matrix adhesion, and matrix deformation. ABS-modified Elium® IM composites exhibited rough matrix fracture surfaces and internal cavitation of ABS particles.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Manufacturing
J. L. Liu, Z. A. B. Mazeli, T. E. Tay, V. B. C. Tan
Summary: Bio-inspired helicoidal CFRP laminates can sustain higher loads and be effectively healed after impact using thermoplastic laminates. Ply blocking improves ply toughness and healing efficiency.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Composites
Ruben Pereira, Marcelo de Moura, Raul Moreira, Nuno Correia
Summary: This paper presents an experimental and numerical study on the mixed-mode fracture characterization of AS4/LMPAEK composites. Different loading conditions were applied to investigate the fracture behavior under pure mode I and mixed-mode I+II loading. The results were validated through numerical finite element analyses. The study provides valuable insight into the fracture behavior of the composite material.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Polymer Science
Zhi Sheng, Jie Ma, Zihang Shen, Shaoxing Qu, Zheng Jia
Summary: This paper presents a chemomechanical model for mechanoresponsive self-growing hydrogels. The model integrates theories of mechanoradical generation, chemical kinetics of polymerization, and new network formation to investigate the concentration of mechanoradicals, polymerization kinetics, and mechanical behavior of self-growing hydrogels. The model predicts the stress-stretch responses of self-growing hydrogels, which are consistent with experimental measurements and can explain the observed mechanical behaviors.
Article
Materials Science, Composites
Runmin Xu, Chen Wang, Kangkang Xu, Guanghui Liu, Hao Wang, Shiliu Zhu, Yuxia Chen, Yong Guo
Summary: Acoustic emission (AE) technology is a significant tool for analyzing the mechanical properties of wood-plastic composites (WPCs), allowing precise observation of their damage evolution and fracture process. It provides important technical support for the emerging WPC industry.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Ceramics
George D. D. Quinn, Jonathan A. A. Salem, Jeffrey J. J. Swab
Summary: We evaluated more than fifty materials using small semi-elliptical controlled surface flaws with the Newman-Raju factors. The results were sound and comparable to other methods, despite some occasional nuances and peculiarities. Following the guidelines in ASTM C 1421 and other standards, and polishing the recommended 4.5 to 5 h material, one can obtain correct results for most ceramics including SL200B sintered silicon nitride. Removing excessive material for sharp corner, shallow surface cracks is unwise, except when removing lateral cracks. The solutions proposed by Strobl et al. are an interesting alternative to the Newman-Raju factors but require more experience and verification before being accepted.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Mechanics
Zhao Duan, Chenxi Dong, Xusheng Yan, Qiang Sun, Bin Li
Summary: This study investigates the fracture damage behavior of loess using three-point bending tests and explores the relationship between crack angles and mechanical strength, crack evolution, and acoustic emission signals. The results provide an in-depth understanding of the fracture damage mechanism of loess.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Optics
Dan N. Borza, Christophe Gautrelet
OPTICS AND LASERS IN ENGINEERING
(2015)
Article
Materials Science, Multidisciplinary
Leila Khalij, Christophe Gautrelet, Alain Guillet
MATERIALS & DESIGN
(2015)
Proceedings Paper
Engineering, Mechanical
Aymeric Appert, Christophe Gautrelet, Leila Khalij, Renata Troian
12TH INTERNATIONAL FATIGUE CONGRESS (FATIGUE 2018)
(2018)
Article
Acoustics
Manel Chabchoub, David Bouscarrat, Benoit Vieille, Christophe Gautrelet, Moez Beyaoui, Mohamed Taktak, Mohamed Haddar, Lakhdar Taleb
Proceedings Paper
Nanoscience & Nanotechnology
Om Bendaou, C. Gautrelet, A. Elhami, M. Agouzoul
2ND INTERNATIONAL CONFERENCE ON MATERIALS ENGINEERING AND NANOTECHNOLOGY (ICMEN)
(2017)
Article
Engineering, Multidisciplinary
B. Vieille, M. Chabchoub, D. Bouscarrat, C. Gautrelet
COMPOSITES PART B-ENGINEERING
(2017)
Article
Polymer Science
N Désilles, C Gautrelet, L Lecamp, P Lebaudy, C Bunel
EUROPEAN POLYMER JOURNAL
(2005)
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)