Article
Materials Science, Composites
M. Naderi, M. Ji, S. Liyanage, U. Palliyaguru, S. Soghrati, N. Iyyer, W. Seneviratne, N. Phan
Summary: In this study, the effect of wrinkles on the interlaminar strength and competing damage mechanisms of composite beams was investigated through experimental and finite element analysis. It was found that specimens with wrinkles exhibited significant delamination, matrix cracking, and kinking patterns, while specimens without wrinkles mainly experienced a single delamination leading to final failure.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Wei-Tsen Lu, Zhenjia Gao, Hari K. Adluru, Kevin H. Hoos, Waruna P. Seneviratne, David H. Mollenhauer, Endel V. Iarve
Summary: This study applies the regularized eXtended Finite Element Method (XFEM) framework to the discrete modeling of damage evolution and interaction in laminated composites. The crack density limit is increased for a given mesh size. The study also introduces the Residual Strength Tracking methodology and an automatic cycle jump step selection algorithm. The predictions show excellent agreement with experimental data.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Mechanics
Raj B. Bharati, M. Filippi, Prashanta K. Mahato, E. Carrera
Summary: The study utilized the Lagrange polynomial in Carrera Unified Formulation (CUF) framework to analyze the flutter of delaminated box-beam, showcasing the capability of this method for complex models.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Composites
Masahiro Arai, Toshiki Chiba, Keita Goto, Akinori Yoshimura
Summary: This study evaluated the interlaminar tensile strength of CFRP prepregs under different curing conditions and investigated the effects of adding a carbon nanofiller interlayer on fracture toughness. The results showed that dynamic interlaminar strength was higher than static strength, and samples cured at 130 degrees C had higher strength compared to those cured at 100 degrees C.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Civil
Touhami Tahenni, Farid Bouziadi, Bensaid Boulekbache, Sofiane Amziane
Summary: This paper presents an experimental investigation and nonlinear finite element analysis of the shear and diagonal cracking effect on the behavior of reinforced-concrete beams, with and without transverse reinforcement. The results show that transverse reinforcement efficiently controls diagonal crack width, increases shear capacity, shifts failure mode, and improves ductility, especially with high-strength concrete. The 3D finite element analysis provides accurate predictions for the shear response of RC beams.
Article
Engineering, Manufacturing
Youzou Kitagawa, Akinori Yoshimura, Masahiro Arai, Keita Goto, Naoki Sugiura
Summary: The study investigates the effects of fiber cross-sectional shape on transverse crack extension in carbon fiber reinforced plastics (CFRP). Experimental results show that kidney-shaped carbon fibers retard crack initiation and accumulation compared to conventional round-shaped fibers. Numerical simulations also support these findings, confirming that kidney-shaped fibers suppress transverse crack accumulation in CFRP laminates.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
Peifeng Gao, Xin Geng, Houyuan Zhang, Guian Man, Xingzhe Wang
Summary: A new test method was proposed to accurately measure the transverse tensile interfacial strength of REBCO-coated CC tapes by using a special composite structure specimen, effectively reducing data scattering and validating accuracy through FE calculations. Experimental results showed stable delamination strength occurring primarily at the interface between the REBCO superconducting layer and the buffer layer. FE analysis further indicated that defects may be the cause of delamination.
ACTA MECHANICA SOLIDA SINICA
(2022)
Article
Materials Science, Multidisciplinary
Stanislav Zak, Alice Lassnig, Megan J. Cordill, Reinhard Pippan
Summary: In recent years, research on adhesion properties of thin films on brittle substrates has increased, with the continued use of the Hutchinson-Suo method for measuring adhesion. Modern material combinations may lead to plastic deformations rather than elastic behavior. This study uses finite element analysis to investigate the influence of plastic deformation on experimental procedures.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2021)
Article
Engineering, Mechanical
Mingpo Zheng, Zhifeng Liu, Magd Abdel Wahab, Xing Yan, Wentao Chen, Chao Li
Summary: The influence of various factors on the mechanical properties of bolted joints was investigated using finite element analysis. Different analysis steps were considered to simulate the actual assembly and loading process. The results showed different stages of performance under transverse loading, which agrees with previous experimental results. The force-displacement curves provided parameters for characterizing the mechanical properties of the bolted joint.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Computer Science, Interdisciplinary Applications
Ke He, Chongmin Song, Robin Fell
Summary: This study presents the development of numerical simulation procedures for predicting the potential location, width and depth of transverse cracks in embankment dams, using a combination of conventional numerical and crack propagation modelling techniques.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Mechanics
F. Alizadeh, R. Mazruee Sebdani, C. Guedes Soares
Summary: In this study, the residual ultimate strength of a composite laminate with delamination under in-plane compressive loading is determined numerically using the finite element method. The delamination growth is predicted and modeled using linear fracture mechanics and the virtual crack closure technique. The results show that the load-carrying capacity of the structure is reduced due to the expansion of the delaminated area. Despite its simplicity and efficiency, this method allows for the calculation and prediction of strain energy release rates at different fracture modes in the delamination region.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Chaeyoung Hong, Sooyoung Lee, Wooseok Ji
Summary: This study reveals the mechanism of determining the strength of a +/- 45 laminate under tensile loading through experiments and numerical simulation. The experiment observation discovers the unique failure process, including the formation of initial cracks, delamination failure, and the failure of intact layers. The numerical simulation accurately reproduces the experimentally observed failure process.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
Ryota Sako, Ryoma Aoki, Ryo Higuchi, Masahito Ueda, Yuta Urushiyama, Tomohiro Yokozeki
Summary: The study compared the effectiveness of Euler-Bernoulli's and Timoshenko's curved beam theories in calculating strain energy release rates (SERR) for curved beams. It found that Euler-Bernoulli's theory is effective for large radius-of-curvature-to-thickness (R/h) values, while Timoshenko's theory works well even for small R/h values.
COMPOSITE STRUCTURES
(2022)
Article
Chemistry, Physical
Houcheng Fang, Di Wang
Summary: This study verifies the delamination damage in thick-walled composite-overwrapped pressure vessels through establishing models for composite delamination damage and in-plane damage. The delamination failure processes and the first occurrence of delamination failure were simulated and analyzed using a tiebreak contact algorithm. The locations of significant delamination phenomena under different layup angles were predicted, and the differences in structural strength between different laying methods were compared.
Article
Materials Science, Composites
Alireza Taherzadeh-Fard, Alejandro Cornejo, Sergio Jimenez, Lucia Gratiela Barbu
Summary: The present study investigates the delamination behavior of laminated composites in different loading modes using a homogenization theory of mixtures. Delamination damage is introduced at the bulk level by eliminating explicit representation of interfaces. Potential delamination planes are identified based on interfacial stresses, and damage evolution is calculated independently for each mode using a stress-based formulation. An arc-length strategy is employed to solve equilibrium equations due to snap-back effects. The reliability of the adopted mixing theory is assessed by comparing results with micromechanical models in fiber metal laminate structures. Good agreement is observed in mode I, mode II, and mixed mode configurations, indicating the effectiveness of the proposed method.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Mark A. Turk, Bruno Vermes, Adam J. Thompson, Jonathan P-H Belnoue, Stephen R. Hallett, Dmitry S. Ivanov
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2020)
Article
Engineering, Manufacturing
M. A. Valverde, R. Kupfer, T. Wollmann, L. F. Kawashita, M. Gude, S. R. Hallett
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2020)
Article
Engineering, Manufacturing
Yi Wang, Ming Kai Chea, Jonathan P-H Belnoue, James Kratz, Dmitry S. Ivanov, Stephen R. Hallett
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2020)
Article
Engineering, Manufacturing
Bing Zhang, Luiz F. Kawashita, Mike Jones, James K. Lander, Stephen R. Hallett
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2020)
Article
Engineering, Manufacturing
Armin Rashidi, Jonathan P. -H. Belnoue, Adam J. Thompson, Stephen R. Hallett, Abbas S. Milani
Summary: An efficient macro-scale finite element approach is introduced to predict defects in the consolidation of carbon fibre woven fabric prepregs, incorporating through-thickness compaction and inter-ply shear behavior. The model also includes a one-dimensional compaction model to describe the compressibility of uncured prepregs, with parameters identified and validated through experiments. Additionally, in-plane and out-of-plane behavior of the woven fabric is captured through hybrid membrane and shell modeling, demonstrating applicability to industrial case studies.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Oriol Gavalda-Diaz, Riccardo Manno, Antonio Melro, Giuliano Allegri, Stephen R. Hallett, Luc Vandeperre, Eduardo Saiz, Finn Giuliani
Summary: In this study, stable interfacial crack propagation in SiC/BN/SiC CMCs was achieved using in situ micromechanical testing in the scanning electron microscope. The critical energy release rate of the BN-fiber interface in Mode I and II was found to be lower than that of the fiber, explaining the generalized fiber debonding observed in the fracture of these CMCs. This work highlights possible routes for the optimization and modeling of the new generation of CMC interphases.
Article
Materials Science, Composites
Xiaochuan Sun, Jonathan P-H Belnoue, Wei-Ting Wang, Byung Chul Kim, Stephen R. Hallett
Summary: Automated Fibre Placement (AFP) is efficient for large-scale deposition of composite prepreg materials, but not ideal for manufacturing small/medium complex parts. A new method of creating flat tailored preforms from steered fiber tows before forming them into 3D shapes has shown feasibility in reducing deviation and defects in manufacturing processes. This new virtual 'un-forming' process has demonstrated potential for improving manufacturing routes.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Mario A. Valverde, Jonathan P-H Belnoue, Robert Kupfer, Luiz F. Kawashita, Maik Gude, Stephen R. Hallett
Summary: This study introduces a methodology for characterizing thermoplastic composite materials under rapid processing conditions, with significant deformations observed during high temperature experiments. A phenomenological material model developed for toughened thermosets was applied and Finite Element simulations were conducted on compacted specimens.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Materials Science, Composites
Bing Zhang, Stephen R. Hallett, Giuliano Allegri
Summary: This paper explores a novel technique for sensing delamination in through-thickness reinforced composites using electromagnetic induction. By utilizing ferromagnetic Z-pins and coils, this method is able to avoid potential interferences from contact electrical resistances and has been demonstrated to be viable in bridging tests. The sensitivity of the magnetic-based sensing technique increases with loading rate and is capable of detecting both mode I and mode II delamination events.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Mechanics
Jagan Selvaraj, Luiz F. F. Kawashita, Stephen R. R. Hallett
Summary: A computationally efficient method for discrete modelling of cracks in laminated composite structures using explicit time integration is proposed. The method addresses the challenges of discrete crack modelling by employing mixed time integration or subcycling, and minimizing the impact on the surrounding stress field through nodal force balance.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Mechanics
Bing Zhang, Giuliano Allegri, Stephen R. Hallett
Summary: This paper presents a novel numerical technique for modelling fatigue delamination growth in fibre reinforced composites. The simulation approach can describe fatigue delamination under various loading conditions. The method combines twin cohesive zone models with an artificial neural network. The application of this technique has been successfully demonstrated through verification and validation.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Engineering, Manufacturing
A. D. Cochrane, J. Serra, J. K. Lander, H. Boehm, T. Wollmann, A. Hornig, M. Gude, I. K. Partridge, S. R. Hallett
Summary: Significant research has been conducted on the small-scale failure behavior of Z-pinned composite laminates, but little work has been done on the large-scale, high strain-rate behavior of Z-pinned composites at the structural level. Small-scale testing is not sufficient to fully study the crack bridging effects of Z-pins, while full-scale testing on real components is difficult due to complex geometries and failure mechanisms. A novel cantilever soft body impact test has been developed to study the behavior of Z-pin arrays under high strain-rate conditions.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Engineering, Manufacturing
Tharan Gordon, Xiaodong Xu, Michael R. Wisnom, Stephen R. Hallett, Byung Chul Kim
Summary: This paper presents an experimental investigation into the effect of scarfed ply drops on the low velocity impact response of carbon/epoxy laminates. It was found that the scarfed ply drops reduced stress concentrations and prevented fibre breakage. Furthermore, laminates with scarfed ply drops exhibited less delamination and internal matrix cracking, indicating higher damage resistance compared to laminates with conventional ply drops.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Mechanics
Kilian Gruebler, Daniel Thomson, Nik Petrinic, Michael R. Wisnom, Stephen R. Hallett
Summary: A study was conducted to examine the impact of multi-axial stress states and reinforcement type on the constitutive response of fibre reinforced epoxy polymers using both experimental and numerical methods. The study investigated the constitutive behavior of carbon and glass fibre reinforced epoxy resin under different stress states. The experiments were simulated using an enhanced non-linear material model that accurately represented the elastic and plastic behavior. The results demonstrated that the fiber reinforcement type and multi-axial stress state significantly influenced the overall constitutive response.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Pok Lam Marvin Lau, Jonathan P-H Belnoue, Stephen R. Hallett
Summary: This paper presents a novel methodology that can automatically detect and isolate individual ply information within a low-resolution composite laminate image. The method can quickly process the image and create accurate geometric models with minimal user interaction. The generated finite element models can be used for structural and strength simulations to analyze the impact of waviness defects.
COMPOSITES AND ADVANCED 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)
