Article
Materials Science, Composites
Haoqi Zhang, Aonan Li, Jiang Wu, Bingyu Sun, Chun Wang, Dongmin Yang
Summary: This paper comprehensively studies the effect of fibre placement on the mechanical performance of open-hole composites under uniaxial tension. A hybrid manufacturing technology is presented to enable the fabrication of 3D printed dual-polymer composites with low porosity and customised continuous carbon fibre reinforcement. Placing continuous fibres along the maximum principal stress trajectories improves the strength of the composites and postpones crack initiation. Additional fibres along the minimum principal stress trajectories and around the hole dramatically alter the failure mode and mechanical performance of the samples. A finite element model based on the actual printing paths is developed to understand the stress distributions caused by different fibre placement methods.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Mechanics
Ryoma Aoki, Ryo Higuchi, Tomohiro Yokozeki, Kazuyuki Aoki, Shigekazu Uchiyama, Toshio Ogasawara
Summary: Thin-ply technology offers more possibilities for composite structures, allowing for variations in ply thickness and laminate layup. This study investigated the effects of ply thickness and 0 degrees-layer ratio on the strength and damage behavior of thin-ply composite laminates, finding that thin-ply can reduce strength and a higher 0 degrees-layer ratio leads to increased strength with a transition to splitting-dominated failure. Additionally, finite element analysis indicated that fastener restraint can alleviate stress concentration, potentially impacting tensile strength.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Composites
Zhe Yang, Kunkun Fu, Zhongsen Zhang, Junming Zhang, Yan Li
Summary: This study presents an orthogonal-element solid orthotropic material with penalization (SOMP) topology optimization method that incorporates the 3D printing manufacturability of continuous carbon fiber reinforced composites (CCFRCs) and a printing path planning strategy. The results demonstrate the effectiveness of this method in optimizing structural design and improving material stiffness.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Mechanics
K. Somlo, S. S. Chauhan, C. F. Niordson, K. Poulios
Summary: This study investigates the mechanical behavior of elastically isotropic truss lattice structures produced by laser powder bed fusion. Experimental and computational methods are combined to reveal the impact of different factors on the mechanical properties and the uncertainties associated with manufacturing. Detailed insight into failure mechanisms is obtained through high resolution DIC measurements and numerical simulations.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Su Li, Hang Lin, Rihong Cao, Yixian Wang, Yanlin Zhao
Summary: The influence of ligament length and joint angle on failure characteristics of fractured rock is studied using uniaxial compression experiments. It is found that the mechanical parameter curves exhibit a U-shape or V-shape as the ligament length increases. The type of cracks and the driving displacement field of wing cracks are affected by joint angle variation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Civil
Zhiao Gao, Lingwei Kong, Zhenhua Zhou, Shuangjiao Wang
Summary: This study investigates the damage evolution of expansive clay with filled fissures by evaluating the stress-strain-resistivity curves. The results show that increasing the inclination angles of fissures decreases the strength linearly and changes the stress-strain behavior from hardening to softening. The failure modes of various fissure morphologies are classified into three main types. This study provides a reference for understanding fissured soil's failure process and applying comprehensive resistivity testing technology in fissured soil mechanics.
KSCE JOURNAL OF CIVIL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Siyuan Fang, Xiaowan Zheng, Bicheng Guo, Bernard Sia, Lianxiang Yang
Summary: A new method for detecting the onset of localized necking in uniaxial tensile tests is presented in this paper, which uses a multi-camera digital image correlation system to measure the cross-sectional area at different positions of the sample. The effectiveness and accuracy of the proposed method are verified through a series of tensile tests and are compared with different localized necking detection methods.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Polymer Science
Rajan Choudhary, Inna Bulygina, Vladislav Lvov, Anna Zimina, Sergey Zhirnov, Evgeny Kolesnikov, Denis Leybo, Natalya Anisimova, Mikhail Kiselevskiy, Maria Kirsanova, Fedor Senatov
Summary: The present study aimed to investigate the synergistic response of bioresorbable polylactide/bioactive wollastonite scaffolds towards mechanical stability, mesenchymal stromal cell colonization, and antibacterial activity in a physiological environment. It was found that the addition of wollastonite improved cell attachment and reduced bacterial attachment, enhancing the biological fixation of the scaffold.
Article
Engineering, Manufacturing
Kota Takamoto, Toshio Ogasawara, Hiroki Kodama, Tomoisa Mikami, Sota Oshima, Kazuyuki Aoki, Ryo Higuchi, Tomohiro Yokozeki
Summary: This study investigates the effects of layer thickness and stacking sequence on the open-hole compressive strength of thin-ply CFRP laminates through experiments and finite element analyses, demonstrating the effectiveness of the numerical model in predicting the strength.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Chemistry, Physical
Narongkorn Krajangsawasdi, Ian Hamerton, Benjamin K. S. Woods, Dmitry S. Ivanov, Marco L. Longana
Summary: This paper explores the use of a novel discontinuous fibre reinforced thermoplastic filament called Discontinuous Aligned Fibre Filament (DcAFF) for 3D printing to produce complex structural parts. The study reshapes initial carbon fibre-poly(lactic acid) (PLA) tape into a circular filament, DcAFF, using a scalable machine designed for high production rates. The filaments are then printed using a general-purpose 3D printer. Tensile and open-hole tensile tests show that the DcAFF specimens have superior mechanical properties compared to other PLA-based 3D printed composites. The failure mechanism of the composite transitions from brittle to ductile through the printing path raster.
Article
Engineering, Manufacturing
Yuncong Feng, Zhenhan Wang, Meiyu Liu, Zhibin Han, Biao Liang, Weizhao Zhang
Summary: Existing methods for modeling viscoelasticity of woven composites during curing lack accuracy in numerical simulation due to neglecting interaction among yarns and considering preforming effects. In this paper, a novel geometric modeling method involving finite element analysis (FEA) and element mapping is proposed to accurately simulate the stress relaxation of woven carbon fiber reinforced composites (CFRPs). Experimental validation indicates that this approach can effectively capture the viscoelastic response of woven CFRPs under complex processing conditions.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Multidisciplinary
Mingshen Li, Xuhai Xiong, Shude Ji, Wei Hu, Yumei Yue
Summary: The TT-FSLW technique, with low rotational speed, has successfully eliminated common FSLW defects and enhanced the maximum shear strength of the joint significantly, making it superior to other conventional welding methods in joining metals and PMCs.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Construction & Building Technology
Yong Yu, Zuquan Jin, Shuangshuang Shao, Xiaoying Zhang, Ning Li, Chuansheng Xiong
Summary: Studies have shown that steam curing can cause micro or macro-cracks in concrete, but the addition of supplementary cementitious materials and ensuring sufficient water vapor can effectively prevent surface cracking and maintain the tensile strength of concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Biomedical
Flaminio Cesar Sales, Andrews Souza, Fallconny R. S. Oliveira, Rui A. Lima, Joao Ribeiro
Summary: This study evaluates the suitability of three hyperelastic material models for stress concentration scenarios and selects an appropriate model to study stress concentration factors. The research provides important variable values for the analysis and design of hyperelastic elements, and lays a foundation for understanding the stress-strain behavior of PDMS.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Karuppasamy Pandian Marimuthu, Soowan Park, Uihwan Jeong, Hyungyil Lee
Summary: A dual flat-spherical indentation (DFSI) technique is developed for evaluating elastic-plastic properties from rough metallic surfaces by flattening the rough surface and performing spherical indentation to extract reproducible P-h curves. The optimized indentation parameters allow for the use of conventional spherical indentation method for property evaluation from DFSI P-h curves. The applicability of DFSI method for rough surfaces commonly found in engineering practice is verified.
MATERIALS & DESIGN
(2021)
Article
Polymer Science
Jasper Delaey, Laurens Parmentier, Lincy Pyl, Joost Brancart, Peter Adriaensens, Agnes Dobos, Peter Dubruel, Sandra Van Vlierberghe
Summary: Acrylate-endcapped urethane-based precursors were synthesized to form a poly(D,L-lactide)/poly(epsilon-caprolactone) (PDLLA/PCL) random copolymer backbone with different architectures and molar masses. By adjusting the monomer content, the glass transition temperature and actuation temperature of the polymers could be controlled. The resulting polymers showed excellent shape-memory properties and compatibility with additive manufacturing techniques. Moreover, they exhibited biocompatibility in in vitro cell assays.
MACROMOLECULAR RAPID COMMUNICATIONS
(2023)
Article
Construction & Building Technology
Gerlinde Lefever, Ahmad Shawki Charkieh, Mustafa Abbass, Danny Van Hemelrijck, Didier Snoeck, Dimitrios G. Aggelis
Summary: The inclusion of superabsorbent polymers (SAPs) is increasingly attractive to promote the self-healing ability of cementitious materials and reduce manual repair costs. Ultrasonic monitoring is used for non-destructive evaluation to determine the effectiveness and compare the healing capacity of different mixtures. However, previous studies mainly focused on mortars without large aggregates, so monitoring and comparing the self-healing of concrete and mortar were conducted. Ultrasonic surface wave monitoring shows the potential to evaluate crack closure and the effects of different SAPs.
DEVELOPMENTS IN THE BUILT ENVIRONMENT
(2023)
Article
Engineering, Manufacturing
Amalia Katalagarianakis, Efstratios Polyzos, Danny Van Hemelrijck, Lincy Pyl
Summary: This study experimentally investigates the delamination behavior of carbon fiber-reinforced polyamide laminates under different loading modes. The interlaminar fracture toughness at crack initiation was found to be 1.5 kJ/m2 in mode I, 2.1 kJ/m2 in mode II, and 1.0 kJ/m2 in mixed mode I-II. Various analytical and numerical models were used to validate the experimental results, and scanning electron microscopy revealed the micro-mechanical origins of the crack in different loading configurations.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Multidisciplinary
E. Polyzos, D. Van Hemelrijck, L. Pyl
Summary: This study presents a new stochastic modeling approach to address challenges in micromechanical modeling of short-fiber composites. It introduces a stochastic generation technique based on kernel density estimation to save time and effort in fiber extraction, and a novel semi-analytical approach to consider multiple fibers while reducing computational effort. The approach is demonstrated on recycled poly(ethylene terephthalate) filaments reinforced with recycled short carbon fibers for additive manufacturing, showing similar predictions of elastic properties using only 40-50 fibers compared to a direct modeling approach with 1050 fibers, and close agreement with experimental data.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Mechanics
Ali Shivaie Kojouri, Haniyeh Khosravi Rikaee, Kalliopi-Artemi Kalteremidou, Danny Van Hemelrijck
Summary: This study examines the capability of the digital image correlation method to determine the Jintegral for polymers with elastic and elastic-plastic behavior. To achieve this, single-edge notch tension specimens manufactured out of PMMA and HDPE are tested under pure mode I loading conditions, and the displacement field at the surface of each specimen is obtained using DIC. The J-integral for each specimen is then computed by combining the higher-order singular and non-singular terms derived from DIC.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Mechanics
E. Polyzos, D. Van Hemelrijck, L. Pyl
Summary: This article presents a new analytical solution to the delamination problem of interface deformable generally layered composite laminates. The governing equation for interface forces and moments is obtained under plane strain assumptions, considering extension-bending coupling phenomena and residual hygrothermal stresses. The interface forces and moments are included in a novel generalization of the J-integral to estimate the Energy Release Rate (ERR). The analytical results of ERR and mode mixity show excellent agreement with Finite Element models for a Double Cantilever Beam test of a generally layered fibre metal laminate, utilizing the Cohesive Zone Method (CZM) and the Virtual Crack Closure Technique (VCCT).
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Mechanics
E. Polyzos, D. Van Hemelrijck, L. Pyl
Summary: A novel approach is proposed in this study to convert real voids to ideal supercylindrical ones, which better approximate the shape of voids and can be described by a single parameter. The elastic properties of acrylonitrile butadiene styrene are predicted using the polynomial chaos expansion technique. The results are compared with previous tensile tests and different modeling approaches to gain a comprehensive understanding of the advantages of the new approach.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
E. Polyzos, D. Polyzos, D. Van Hemelrijck, L. Pyl
Summary: The majority of studies in the open literature use homogenization models to consider microstructural parameters, but they fail to account for size effects at small scales. This study introduces a novel approach that combines property contribution tensors with strain gradient elasticity to capture size effects and improve predictions about effective elastic properties.
MECHANICS OF MATERIALS
(2023)
Article
Engineering, Mechanical
Aldjabar Aminou, Bachir Belkassem, Oussama Atoui, Lincy Pyl, David Lecompte
Summary: This study investigates the blast absorption capacity of a brittle mineral foam-based sacrificial cladding (SC) using finite element modeling and LS-DYNA software. The SC reduces the maximum out-of-plane displacement of a thin aluminum plate by at least half when exposed to blast load. The SPH model, based on quasi-static compression tests and a phenomenological relationship, accurately predicts the maximum out-of-plane displacement of the plate with a relative error of 5% compared to experimental values.
MECHANICS & INDUSTRY
(2023)
Proceedings Paper
Construction & Building Technology
Gerlinde Lefever, Nele De Belie, Danny Van Hemelrijck, Dimitrios G. Aggelis, Didier Snoeck
Summary: This study evaluates the closure of cracks in cementitious mixtures with and without superabsorbent polymers using ultrasound measurements. By sending ultrasonic waves through the cracks, information on both the sound material and the healing products formed within the cracks is obtained. The healing process is promoted by wet-dry curing cycles and monitored for 14 days. Ultrasound was found to be sensitive to the closure of cracks, as confirmed by microscopic analysis of the reduction in crack width opening.
PROCEEDINGS OF THE 75TH RILEM ANNUAL WEEK 2021
(2023)
Article
Engineering, Mechanical
E. Polyzos, E. Vereroudakis, S. Malefaki, D. Vlassopoulos, D. Van Hemelrijck, L. Pyl
Summary: This research investigates the elastic and damage characteristics of individual composite beads used in 3D printed composites. A new analytical probabilistic progressive damage model (PPDM) is introduced to capture the elastic and damage attributes of these beads. Experimental results show strong agreement with the model in terms of elastic behavior and ultimate strength and strain.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2024)
Article
Construction & Building Technology
Gerlinde Lefever, Ahmad Shawki Charkieh, Danny Van Hemelrijck, Didier Snoeck, Dimitrios G. Aggelis
Summary: Non-destructive evaluation using air-coupled ultrasound provides an efficient method for assessing the self-healing ability of cementitious composites.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Composites
Xi Liu, Wei Shen, Jincun Fu, Toshiaki Natsuki, Lvtao Zhu
Summary: The 3-D carbon fiber reinforced resin matrix composite tubes were designed and formed using a novel braiding-winding-pultrusion processing technique. The effects of temperature environments on the mechanical responses and damage behaviors of the composite tubes were investigated, and it was found that the structural design of the tubes directly affects their axial bearing capacity.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Weihao Yuan, Ziyang Zhang, Yueshan Li, Yudong Huang, Zhengxiang Zhong, Zhen Hu
Summary: In this study, the simultaneous self-healing of matrix and interface damage of fiber-reinforced composites was achieved by integrating extrinsic self-healing based on microcapsules and internal self-healing based on coordination interaction. The high exothermic action of epoxy resin and mercaptan repair agent in the self-healing process was observed using infrared thermal imaging technology for in-situ and real-time damage detection.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Israr Ud Din, Adnan Ahmed, Farah Tarek, Wesley Cantwell, Kamran A. Khan
Summary: In this study, a finite element model driven by XCT was developed to simulate the folding characteristics of origami structures, and the results showed good agreement with experimental data. The study demonstrates the potential application of XCT-driven FE modeling in simulating foldable structures.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Yishan Yang, Yukang Lai, Song Zhao, Hongguang Chen, Renshu Li, Yongjiang Wang
Summary: This study reports the synthesis of a new transparent fiber reinforced polymer material (tGFRP) with high transparency and superior mechanical properties by controlling the refractive index of epoxy resin and using a novel processing technique.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Yuhang Liu, Kai Huang, Junfeng Ding, Shangyang Yu, Zhixing Li, Li Zhang, Licheng Guo
Summary: This study proposes a method for accurately predicting the penetration failure load of composites using acoustic emission (AE) data. The method includes a cyclic loading test schedule and an extrapolation method based on uncertainty. The results show that this method can accurately predict the failure load when LR equals 1.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Jinxia Cai, Bing Xie, Yunliang Jiang, Jinshan Lu, Zeyu Li, Pu Mao, Mohsin Ali Marwat, Haibo Zhang
Summary: This research aims to develop ternary nanocomposites composed of polycarbonate, Al2O3 nanoparticles, and BaTiO3 nanowires for capacitive energy-storage. By optimizing the capacitor materials, the discharge energy density and efficiency have been improved, and the superiority of the ternary polymer nanocomposites for dielectric energy-storage has been validated through finite element analysis.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Hon Lam Cheung, Mohsen Mirkhalaf
Summary: The aim of this study is to develop physics-based models and establish a structure-property relationship for short fiber composites. High-fidelity full-field simulations are computationally expensive and time-consuming, so the use of artificial neural networks and transfer learning technique is proposed to solve this issue and improve modeling accuracy and efficiency.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Yue Jiang, Juyoung Leem, Ashley M. Robinson, Shuai Wu, Andy H. Huynh, Dongwon Ka, Ruike Renee Zhao, Yan Xia, Xiaolin Zheng
Summary: The effect of interface engineering on the combustion and mechanical performance of high-loading B/HTPB composites was investigated in this study. It was found that both covalently bonded and nonpolar/nonpolar interfaces effectively reduced the aggregation of B particles, promoting combustion efficiency and burning rate, and enhancing the mechanical properties of the composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
R. Mohsenzadeh, B. H. Soudmand, A. H. Najafi, M. Fattahi, D. P. Uyen
Summary: This study examines the morphological features of nano-zeolite nanoparticles incorporated into ultra-high molecular weight polyethylene nanocomposites. The dispersion of nanoparticles within the polymer matrix was improved following nano-zeolite incorporation. The size and distribution of nanoparticles were determined through tailored histograms, and the effective elastic moduli of nanocomposites were calculated, considering interfacial effects.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Chunming Ji, Jiqiang Hu, Rene Alderliesten, Jinchuan Yang, Zhengong Zhou, Yuguo Sun, Bing Wang
Summary: This paper investigates the effect of impact damage on the fatigue behavior of CF/PEEK-titanium hybrid laminates. A fatigue life model is proposed to predict the S-N curves of the laminates based on energy dissipation approach. The energy dissipation behavior of the laminates under different experimental conditions is analyzed through post-impact fatigue tests, and the correlation between impact damage and fatigue dissipation energy is determined. The validity of the proposed model is verified through fatigue tests under different stress ratios and impact energy levels.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Shaokai Hu, Ping Han, Chao Meng, Ying Yu, Shaolong Han, Haoyu Wang, Gang Wei, Zheng Gu
Summary: This study decorates MXene on the surface of carbon fiber using different bonding interactions to improve the interface adhesion and mechanical properties of carbon fiber-reinforced polymers composites (CFRPs). The results demonstrate that CFRPs reinforced by CF-c-MXene show the optimal properties, with significant improvements in impact strength and interfacial shear strength compared to the unsized carbon fiber-reinforced composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Steven U. Mamolo, Henry A. Sodano
Summary: This study demonstrates that chlorination of ANFs and oxygen plasma treatment of carbon fibers enables the formation of a chlorinated ANF (Cl-ANF) interphase, resulting in a 79.8% increase in interfacial shear strength and a 33.7% increase in short beam strength in CFRP composites. This method provides a rapid and reliable process to improve the mechanical properties of CFRPs without degrading the tensile strength of the carbon fibers.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Yuyang Zhang, Huimin Li, Xin Liu, Yanhong Chen, Chengwei Qin, Daining Fang
Summary: Establishing a prediction model for the mechanical properties of three-dimensional tubular braided composites at different temperatures is of great significance. This study adopted a multi-scale modeling framework based on micro-computed tomography to consider the characteristics of the real yarn cross section and establish a realistic trans-scale finite element model for the composites. The predicted mechanical properties were found to be significantly affected by temperature.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Shengtao Dai, Fei Yan, Jiaming Guo, Huiru Hu, Yu Liu, Liu Liu, Yuhui Ao
Summary: This study successfully synthesized a hyperbranched waterborne polyurethane sizing agent and cellulose nanocrystal modified zinc oxide nanohybrids to improve the interface and properties of carbon fiber reinforced composites. The modified composites exhibited remarkable enhancements in mechanical properties and exceptional UV resistance.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Libera Vitiello, Martina Salzano de Luna, Veronica Ambrogi, Giovanni Filippone
Summary: The identification of the percolation threshold in short fiber composites is crucial for assessing material properties and biodegradation speed. In this study, an original rheological approach was used to estimate the percolation threshold of hemp and kenaf-based composites, which showed good agreement with conventional dielectric spectroscopy analyses.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
