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Failures of laminates under nonpenetrative impacts Compos. Struct. (IF 6.3) Pub Date : 2024-04-19 Junchen Zhou, Zheng-Ming Huang
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Characterization of a two-step laser paint stripping process on CFRP Compos. Struct. (IF 6.3) Pub Date : 2024-04-18 Man Xu, Sen Yang, Xinyi Liu, Lin Li, Yu Wan, Chenzhuo Wang, Meng Wu, Youdong Gao, Mian Zhong, Biyi Wang, Yong Jiang
This work presents a two-step non-destructive method for cleaning the surface paint of CFRP. The method combines ablation and vibration, using a pulsed laser with a wavelength of 1064 nm. The effects of laser power, beam and path overlap rate on the removal of paints are investigated. The analysis focuses on the cleaning and the damage threshold of the paints and fibers. Additionally, the study analyzed
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Rapid prediction of the cure-induced distortion of newly developed composite parts via transfer learning Compos. Struct. (IF 6.3) Pub Date : 2024-04-18 Jiawei Guo, Shuting Liu, Yingguang Li, Qinlu Meng, Xu Liu, Xiaozhong Hao
Accurately predicting Cure-Induced Distortion (CID) is paramount to ensuring manufacturing precision. Existing prediction models heavily rely on material parameters associated with the CID, which presents challenges for newly developed composites due to the time-consuming, expensive, and limited accuracy of parameter characterization processes. With recognizing the shared curing mechanism across various
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A multi-responsive actuator with sensing capability based on poly (N-isopropyl acrylamide)/poly (sodium acrylate) Janus hydrogels Compos. Struct. (IF 6.3) Pub Date : 2024-04-17 Jinkun Lin, Jialei Li, Weiheng Gong, Yongjia Liu, Yuxuan Ai, Aihua He, Huarong Nie
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Design, modelling, and manufacturing of sandwich radome structure with out-of-band absorption and in-band transmission performances Compos. Struct. (IF 6.3) Pub Date : 2024-04-17 Jiaheng Yang, Huaibin Zheng, Yongqiang Pang, Bingyue Qu, Yongfeng Li, Jiafu Wang, Zhuo Xu
Muti-functional composite structures with customizable electromagnetic (EM) responses have attracted much interest in the radome field. In this study, a multi-layered foam-cored sandwich rasorber structure (FSRS) with absorption-transmission-absorption-type (A-T-A-type) of EM response was proposed. Silver-based frequency selective surface (FSS) screen and carbon-based film as alternatives for traditional
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Double shooting method for FRCM reinforced systems in debonding problems Compos. Struct. (IF 6.3) Pub Date : 2024-04-17 Yu Yuan, Gabriele Milani
The debonding process in FRCM (Fiber Reinforced Cementitious Matrix) strengthened brittle substrates, such as concrete and masonry, is characterized by complex failure modes that include debonding at both the external and internal interfaces of the composite, as well as damage to the mortar matrix. This study addresses this problem classically as a mode-II fracture process by accounting for the one-dimensional
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Anisotropic failure analysis of 2.5-D braided composites under compression Compos. Struct. (IF 6.3) Pub Date : 2024-04-16 Linlin Deng, Ziqing Hao, Hongjun Ke, Hairun Wang, George Kardomateas, Liu Liu
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On characterization of transverse tensile properties of pultruded glass fiber-reinforced polymer (PGFRP) profiles based on non-standard short coupons Compos. Struct. (IF 6.3) Pub Date : 2024-04-16 Yunhong Luo, Pan Zhang, Tao Yu
Pultruded glass fiber-reinforced polymer (PGFRP) profiles, manufactured via a pultrusion process, are increasingly used in civil engineering. However, due to the anisotropic nature, their transverse material properties are weaker than the longitudinal ones, necessitating robust material characterization methods for transverse properties. Commercially available PGFRP profiles often have insufficiently
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Numerical and mechanical analysis of laminated PA11/twill basalt composites with enhanced flame behavior Compos. Struct. (IF 6.3) Pub Date : 2024-04-16 Ilaria Papa, Matteo Bruno, Francesco Napolitano, Luca Esposito, Valentina Lopresto, Pietro Russo
The development of new material configuration is a challenge which requires different steps of characterization. From the mechanical characterization, which is the starting point to determine the application fields, until the evaluation of the safety aspects in case of human contact use or in vehicle and building interiors. Nowadays, the integration with the numerical simulation is strategically important
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Linear static, geometric nonlinear static and buckling analyses of sandwich composite beams based on higher-order refined zigzag theory Compos. Struct. (IF 6.3) Pub Date : 2024-04-15 Yu-Hsien Chen, Chung-De Chen
This study aims at developing finite element formulations based on higher-order refined zigzag theory (HRZT) to analyze sandwich composite beams under linear static bending, geometric nonlinearity and buckling. In HRZT, the higher-order terms associated with average shear strain and rotation due to zigzag are added based on refined zigzag theory (RZT). In linear static bending analysis, both and elements
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Flexible composite structure with customizable in-plane Poisson’s ratio under large deformation Compos. Struct. (IF 6.3) Pub Date : 2024-04-15 Wenhao Zhao, Sanchun Lin, Shengjie Wang, Heng Yang, Jiaxing Wang, Hongshuai Lei
Regulating the inherent Poisson's ratio of soft elastic materials under large deformation is important for their application in emerging fields, such as morphing structures and stretchable electronics. In this study, we selected a composite in which an auxetic honeycomb was embedded in a soft material to regulate the in-plane Poisson's ratio. Based on a cantilever beam model, a theoretical model was
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Impact resistance of assembled plate-lattice auxetic structures Compos. Struct. (IF 6.3) Pub Date : 2024-04-15 Wei-Jing Wang, Wei-Ming Zhang, Meng-Fu Guo, Hang Yang, Li Ma
Auxetic materials are attracting increasing interest due to their extraordinary or even abnormal mechanical properties. Different from the traditional truss-lattice structures, this paper proposes a series of novel auxetic plate-lattice structures with an excellent auxetic effect. Utilizing a dual-materials glue-free assembly design involving hyperelastic and plastic materials, these plate-lattices
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A generic design motif for metamaterials with controllable nonlinearity & guided deformation Compos. Struct. (IF 6.3) Pub Date : 2024-04-14 Xiaofeng Geng, Zhipeng Zhao, Yingqing Guo, Jiqiang Wang, Hu Ding, Xingjian Jing
Structure design motifs take an essential role in creating materials or metamaterials with superior mechanics or special functions. However, a fundamental question naturally arising and remaining unknown is related to how to effectively design an engineered material structure with “adjustable and predictable” nonlinear mechanic properties conveniently. Here we propose a very simple but versatile design
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Experimental and numerical analysis of low-velocity impact and compression after impact responses of novel 3D hybrid composites Compos. Struct. (IF 6.3) Pub Date : 2024-04-14 Ke Wang, Farid Taheri
Rising environmental concerns and the push to cut carbon emissions have resulted in increased incorporation of lightweight materials to improve fuel efficiency across industries. Fiber Metal Laminates (FMLs), known for superior properties, are widely used in aerospace. In the same vein, the recently developed 3D Fiber-Metal Laminates (3DFMLs) with a 3D composite core have been demonstrated to offer
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Multi-scale concurrent topology optimization of cellular structures with multiple microstructures for minimizing dynamic response in the time domain Compos. Struct. (IF 6.3) Pub Date : 2024-04-14 Jian Wang, Yan Zhang, Xiaoyu Wang, Xuyang Zheng, Zhiyong Ma, Wei-Hsin Liao, Nan Zhu, Qiang Gao
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Periodic magnetically oriented gradient structures with flower-like surface for enhancing microwave absorption efficiency Compos. Struct. (IF 6.3) Pub Date : 2024-04-13 Lirui Wang, Miao Yu, Hao Zhang, Mi Zhu
In order to overcome the inherent trade-off between magnetic absorber's effective absorption, filling concentration, and thickness while achieving real-time control over the effective absorption bandwidth (EAB) below −10 dB, periodic magnetically oriented gradient structures featuring flower-like surfaces that can be reconfigured using magnetic induction technology. The arch test results demonstrated
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Fiber-reinforced friction materials: Experimental, statistical and computational universal analysis Compos. Struct. (IF 6.3) Pub Date : 2024-04-12 Kun Yu, Xi Shang, Xiaoguang Zhao, Liangjie Fu, Xiaochao Zuo, Huaming Yang
In this paper, the experimental, statistical and computational universal analysis methods applicable to most fiber-reinforced friction materials (FMs) are presented for four natural wollastonite fibers (WFs) with different length-to-diameter (L/D) ratios. Machine learning (ML) methods for friction coefficient prediction of friction materials are compared and screened. Numerical statistics and calculations
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Failure mechanism analysis and tensile constitutive model of basalt fiber concrete-rock interface based on fiber surface modification Compos. Struct. (IF 6.3) Pub Date : 2024-04-11 Jianxing Chen, Zheming Zhu, Lei Zhou, Leijun Ma, Haohan Wang, Meng Wang
This study investigates the tensile failure mechanism at the concrete-rock interface and proposes a concrete-rock interface tensile mechanical constitutive model considering the degree of rock surface indentation and surface morphology. The Brazilian disc splitting test results demonstrate that the depth and width of rock surface indentations collectively characterize the indentation angle , thereby
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The Q4γs plate finite element for three-layer FGM sandwich plates in deflection, stresses, vibration, and thermal buckling analysis Compos. Struct. (IF 6.3) Pub Date : 2024-04-10 Irwan Katili, Jean-Louis Batoz, Susilo Widyatmoko, Hakim Naceur
This work adapts the Q4γ quadrilateral element to analyse three-layer FGM sandwich plates. Two types of FGM sandwich configurations are employed to assess the element performance in conducting static, free vibration, and thermal buckling analysis. The first configuration is a homogeneous core and FGM outer layers, while the second involves homogeneous top and bottom layers and an FGM core. Various
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Optimization of multi-layered composites against ballistic impact: A mesoscale approach Compos. Struct. (IF 6.3) Pub Date : 2024-04-09 Shashwat Kapoor, Sonalisa Ray, Jagdish Prasad Sahoo, Yugal Kishor Joshi
There has been an urgent need to develop and analyse multi-layered composite structures with varying material properties to withstand projectile impact. The proposed study focuses on the optimization of the multi-layer composite to achieve maximum resistance/energy dissipation. This study investigates the mechanical performance of the proposed multi-layered composite configuration under high strain
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Modeling via peridynamics for crack propagation in laminated glass under fire Compos. Struct. (IF 6.3) Pub Date : 2024-04-09 W.K. Sun, B.B. Yin, Jinhua Sun, V.K.R. Kodur, K.M. Liew
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Vibration control and bandgap tuning of Layer-Gradient periodic pipes based on composite cell Compos. Struct. (IF 6.3) Pub Date : 2024-04-05 Wenjie Li, Xiangxi Kong, Qi Xu, Ziyu Hao
This paper presents a vibration control strategy that installs layer-gradient periodic pipes on general pipelines to suppress the transmission of bending vibration. Bandgap tuning can be achieved without changing the structural size. Initially, a composite cell is constructed based on the bandgap characteristics of ordinary periodic pipes, and a layer-gradient periodic pipe is innovatively designed
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Exploring the nonlinear response of cracked variable stiffness composite plates using plate decomposition method Compos. Struct. (IF 6.3) Pub Date : 2024-04-05 F. Rashidi, S.A.M. Ghannadpour, A. Farrokhabadi
This article examines the impact of crack characteristics such as length and position and also layup and boundary conditions on the nonlinear and post-buckling behavior of relatively thick variable stiffness composite plates. The Ritz method utilizes Legendre polynomials to approximate the displacements. The bending behavior of the plates is described using the first-order shear deformation theory
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A novel modeling and homogenization method of macro fiber composites considering inhomogeneous poling induced by interdigital electrodes Compos. Struct. (IF 6.3) Pub Date : 2024-04-05 Hongli Ji, Yuemin Du, Chongcong Tao, Chao Zhang, Jinhao Qiu
Macro fiber composites (MFCs) are widely used in various fields due to their excellent piezoelectric performance. This paper presents a novel method that combines analytical and finite element analysis to accurately model MFCs. The method iteratively calculates the nonlinear poling field generated by interdigital electrodes (IDEs), leading to reliable estimates of the local orientation and properties
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A coupled 3D morphological reconstruction method for point microcrack defects in Si3N4 ceramic bearing rollers Compos. Struct. (IF 6.3) Pub Date : 2024-04-04 Dahai Liao, Jianfei Yang, Xianqi Liao, Weiwen Hu, Jiao Li, Nanxing Wu
The features of shallow depth and gradual blurring are characterized by the point microcrack defects in SiN ceramic bearing rollers. Point clouds accuracy and mesh correctness of 3D morphological reconstruction are affected. A coupled method is proposed for reconstructing the 3D morphology, based on small-scale structure from motion and nonlinear image clustering vision. The fine-tuning motion supply
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Protection performance of aluminum matrix ceramic ball composite materials plate for hypervelocity impact based on FE-SPH adaptive method Compos. Struct. (IF 6.3) Pub Date : 2024-04-04 YJ. Deng, YF. Ren, X. Liu, L. Li, M. Qin
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A compressible layerwise third-order shear deformation theory with transverse shear stress continuity for laminated sandwich plates Compos. Struct. (IF 6.3) Pub Date : 2024-04-04 Y.S. Gao, C.S. Cai, C.Y. Huang, Q.H. Zhu, R. Schmidt, S.Q. Zhang
Sandwich structures with a soft core typically exhibit multiple deformation modes such as bending, twisting and compression when subjected to transverse loads. Compressive behavior of soft core significantly affects the structural response, which is usually neglected in conventional plate theories. Additionally, conventional plate theories do not take into account transverse shear stress continuity
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A new guided mode so-called minimum group velocity in viscoelastic sandwich plates: A parametric numerical study Compos. Struct. (IF 6.3) Pub Date : 2024-04-04 Souhail Dahmen, Cherif Othmani, Sebastian Merchel, M. Ercan Altinsoy, Abir Rouis, Jian Xiong, Farid Takali
Zero-Group-Velocity (ZGV) guided mode has recently received particular attention because of its highly sensitive to structural changes, such as defects. Parallel to ZGV, in the present work, we introduce a new guided mode so-called Minimum-Group-Velocity (MGV) that is a remarkable phenomenon in defect detection applications. Strictly speaking, when any two phase-velocity dispersion curves of Lamb modes
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Blast performance of polyurethane foam-filled auxetic honeycomb sandwich beams Compos. Struct. (IF 6.3) Pub Date : 2024-04-04 Wen Wu, Yan Liu, Junbo Yan, Baichuan Wang, Fan Bai, Fenglei Huang
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An experimental and parametrical study on repair of cracked titanium airframe structures with single-side bonded carbon fiber-reinforced polymer prepreg patches Compos. Struct. (IF 6.3) Pub Date : 2024-04-04 Junshan Hu, Ruihao Kang, Jinrong Fang, Shizhan Chen, Shanyong Xuan, Jian Zhou, Wei Tian
The present research aims to investigate efficient repair techniques of cracked Ti-alloy aircraft structures with adhesively bonded carbon fiber-reinforced polymer prepreg patches. The repaired specimens in the configuration of a Ti-alloy butt joint with one-side bonded composite patch were prepared under multiple repair factors including patch thickness, patch length, adhesive thickness, cure pressure
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Deep learning uncertainty quantification for ultrasonic damage identification in composite structures Compos. Struct. (IF 6.3) Pub Date : 2024-04-04 Houyu Lu, Sergio Cantero-Chinchilla, Xin Yang, Konstantinos Gryllias, Dimitrios Chronopoulos
In this paper, three state-of-the-art deep learning uncertainty quantification (UQ) methods – Flipout probabilistic convolutional neural network (CNN), deep ensemble probabilistic CNN, and Bayesian probabilistic CNN – based on the Visual Geometry Group 13 architecture are proposed. They are compared with a traditional Bayesian inference approach for localizing delamination damage in composite. The
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Shape memory behaviors of three-dimensional five-directional braided composites with different axial yarns arrangements Compos. Struct. (IF 6.3) Pub Date : 2024-04-03 Yingying Qi, Shuwei Huang, Haoxuan Zhang, Bohong Gu, Baozhong Sun, Wei Zhang
The effect of braided structure on shape memory behaviors of 3D braided composites is critical to design the responses of the composite under external fields. Here we report the effect of axial yarn on shape memory behaviors of three-dimensional five-directional (3D5d) braided shape memory polymer composites (SMPCs) under bending. It was found that the axial yarns will improve bending stiffness and
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Hybridization of face sheet in sandwich composites to mitigate low temperature and low velocity impact damage Compos. Struct. (IF 6.3) Pub Date : 2024-04-03 Jason P. Mack, Faizan Mirza, Arnob Banik, M.H. Khan, K.T. Tan
In this study, the impact response and damage mechanisms of carbon fiber reinforced polymer (CFRP) and glass fiber reinforced polymer (GFRP) hybrid face sheet sandwich composites are investigated with the aim to provide an understanding and solution to mitigate the coupling effects of low temperature and low velocity impact damage. Hybridization of face sheet is achieved by stacking CFRP and GFRP in
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Meso-FE modelling for homogenization of the nonlinear orthotropic behavior of PTFE-coated fabric based on virtual fiber method Compos. Struct. (IF 6.3) Pub Date : 2024-04-03 Junhao Xu, Yan Zhang, Yingying Zhang, Wei Song, Hao Xu, Yushuai Zhao
Compared to traditional textile composites, the coated fabric used in fabric membrane structures is much more flexible. Its macroscopic mechanical behavior is highly nonlinear, anisotropic, and shows stress ratio dependence during the loading process. The main reason is that the yarns within the coated fabric are not completely solidified, and there is a significant crimp interchange process in the
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A novel ductile connection for FRP pultruded beam-to-column assemblies Compos. Struct. (IF 6.3) Pub Date : 2024-04-03 Francesco Ascione, Mario D'Aniello, Luciano Feo, Luigi Granata, Raffaele Landolfo
The resistance, stiffness and ductility of the joints between Fibre Reinforced Polymer (FRP) members play a key role in ensuring the required structural performance of pultruded composite frames. Both bonded and bolted joints are characterised by poor mechanical performance due to brittle failure and low resistance respectively. Hybrid joints are stronger and more ductile, but are still affected by
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Auxetic lattice structures consisting of an enhanced trigram frame unit cell with superior stiffness Compos. Struct. (IF 6.3) Pub Date : 2024-04-02 Mohammad Bashtani, Ehsan Etemadi, Hong Hu, Mahmoud Moradi
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Failure prediction and optimization for composite pressure vessel combining FEM simulation and machine learning approach Compos. Struct. (IF 6.3) Pub Date : 2024-04-02 Qingfeng Wang, Huasong Qin, Liyong Jia, Ziyi Li, Guoqiang Zhang, Yushu Li, Yilun Liu
Failure assessment is one of the fundamental tasks for optimization of composite pressure vessels (CPVs). However, the extensive design space of composites usually leads to costly and repetitive work of failure assessment that hinders the design and optimization of CPVs. In this work, a combined FEM simulation and machine learning approach is used to predict the failure factors of CPVs for further
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Multiscale mechanical analysis of 3D nanoparticle-reinforced metal-based composites considering interface effects Compos. Struct. (IF 6.3) Pub Date : 2024-04-01 Yongchao Zhang, Xiaotian Wang, Bin Li, Fangxin Wang, Xiaofan Gou
Nanoparticle-reinforced metal-based composites (NRMCs) have gained recognition for their remarkable interface effects and their demonstration of superior mechanical properties. To effectively account for interfacial effects and precisely assess the mechanical properties of NRMCs with arbitrarily complex internal structures, our study employs the principle of minimum energy and leverages the Gurtin-Murdoch
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Mechanistic model for the compression strength prediction of masonry columns strengthened with fibre–polymer composites Compos. Struct. (IF 6.3) Pub Date : 2024-03-30 Luis C.M. da Silva, Gabriele Milani, Ernesto Grande, Marco F. Funari
A mechanistic model is presented for the strength prediction of squared columns made of masonry with a periodic arrangement and strengthened with a fibre–polymer composite jacketing. The formulation is based on an incremental plasticity theory that relies on equilibrium, compatibility, and kinematic equations. The strength domain of brick units and mortar joints is bounded by a multi-surface yield
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Fatigue behaviour of glass-fibre-reinforced polymers: Numerical and experimental characterisation Compos. Struct. (IF 6.3) Pub Date : 2024-03-30 B. Alcayde, M. Merzkirch, A. Cornejo, S. Jiménez, E. Marklund, L.G. Barbu
This work presents a novel numerical methodology to model the degradation and failure of composite materials like GFRP submitted to monotonic and high cycle fatigue loads. This is done by using the Serial–Parallel Rule of Mixtures homogenisation technique together with a proper mechanical characterisation of the constituent materials of the composite. This paper also proposes an efficient way of estimating
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Nonlinear stochastic behavior of soft-core sandwich panels Compos. Struct. (IF 6.3) Pub Date : 2024-03-29 N. Malkiel, O. Rabinovitch
The nonlinear stochastic behavior of soft-core sandwich panels and the evolution of uncertainty along the nonlinear path are investigated. The paper focuses on the way the geometrically nonlinear and unstable behavior is affected by uncertainty and considers, for the first time, the evolution of uncertainty along the unstable structural response. The structural modeling relies on the EHSAPT and its
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Passively morphing trailing edge design for composite tidal turbine blades Compos. Struct. (IF 6.3) Pub Date : 2024-03-29 James M. Maguire, Dimitrios Mamalis, Shūji Ōtomo, Edward D. McCarthy
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WrapToR shells: Concept introduction, experimental testing, and design space exploration Compos. Struct. (IF 6.3) Pub Date : 2024-03-29 Chris F. Grace, Mark Schenk, Benjamin K.S. Woods
This work introduces a novel truss stiffener concept for lightweight structural panels as an alternative to sandwich panels or stringer stiffened panels. The Wrapped Tow Reinforced (WrapToR) truss concept is modified to create stiffened composite panel structures (referred to here as WrapToR Shells). A prototype WrapToR Shell unit cell is manufactured and tested under three-point bending, where it
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Introducing a novel piezoelectric-based tunable design for mode-localized mass micro-sensors Compos. Struct. (IF 6.3) Pub Date : 2024-03-29 Hossein Ali Alam-Hakkakan, Amir Reza Askari, Masoud Tahani
This investigation focuses on developing a new sensitivity-improving approach for high-order mode-localized mass micro-sensors by utilizing the capabilities of piezoelectric materials. To this end, an electrostatically coupled micro-beam as the building block of MEMS mass sensors is considered. The present design includes the incorporation of a patterned arrangement of piezoelectric thin films placed
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In-situ failure behavior and interfacial bonding of an interpenetrating metal matrix composite reinforced with lattice-like metallic glass (Ni60Nb20Ta20) preform Compos. Struct. (IF 6.3) Pub Date : 2024-03-28 Kerstin Dittmann, Robert Gruhl, Anna Trauth, Kay André Weidenmann
Metallic glasses (MG) have an amorphous atomic structure and exhibit several exceptional properties such as high strength, hardness associated with high elastic strain limit and elastic energy storage. But MGs are also prone to brittle fracture, making them difficult to use as monolithic structural components and might better be used as a reinforcement phase in hybrid composites such as metal matrix
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Damage evolution of CFRP laminates by normal and oblique impact erosion of pulsating water jets Compos. Struct. (IF 6.3) Pub Date : 2024-03-27 Naidan Hou, Renxi Zhao, Yifan Yue, Xuan Wang, Hao Cui, Yulong Li
Impact direction is one of the critical factors affecting the waterdrop erosion behavior of materials. In this paper, rain erosion damage behavior of a typical carbon fiber reinforced polymer (CFRP) laminate is investigated as a function of the impingement angle (0° as normal impact and 15°, 30°, 45° as oblique impact deviated from the normal) and the relative fiber orientation (parallel PA and perpendicular
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Short-term behavior of glass fiber-polymer composite bending-active elastica beam under service load application Compos. Struct. (IF 6.3) Pub Date : 2024-03-27 Tara Habibi, Landolf Rhode-Barbarigos, Thomas Keller
Bending-active elastica beam is a structural configuration that is based on the elastic deformation of an initially straight beam. This deformation occurs when horizontal displacements are applied to a sliding support, causing the beam to bend into an arched shape. Previous research has focused on the stability of small-scale bending-active structures, thus not considering material strength, which
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Free vibration analysis of composite beams and laminated reinforced panels by refined dynamic stiffness method and CUF-based component-wise theory Compos. Struct. (IF 6.3) Pub Date : 2024-03-27 Xiao Liu, Alfonso Pagani, Erasmo Carrera, Xiang Liu
This paper presents a comprehensive analysis of the free vibration behavior of composite beams and laminated reinforced panels. Employing high-order theories with displacement variables only, the investigation combines dynamic stiffness method (DSM) and the Carrera unified formulation (CUF). The 3D displacement field can be expanded in the framework of CUF as any order of generic unknown variables
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Multifunctional composite material based on piezoelectric nanofibers and Cu-CFRP electrodes for sensing applications Compos. Struct. (IF 6.3) Pub Date : 2024-03-26 Francesco Mongioì, Giacomo Selleri, Tommaso Maria Brugo, Emanuele Maccaferri, Davide Fabiani, Andrea Zucchelli
To monitor possible failures of a composite, several Structural Health Monitoring (SHM) systems have been developed. However, these methods typically involve embedding commercial sensors within the laminate, potentially compromising the material's strength.
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Dynamic crack growth in orthotropic brittle materials using an adaptive phase-field modeling with variable-node elements Compos. Struct. (IF 6.3) Pub Date : 2024-03-26 Jianan He, Tiantang Yu, Weihua Fang, Sundararajan Natarajan
In this paper, crack growth in orthotropic materials subjected to dynamic loading is numerically studied using an adaptive phase-field method. The study starts with a coarse structured mesh and the adaptive refinement strategy based on a user-defined threshold on the phase-field variable is proposed for computational efficiency, and variable-node elements are employed to treat the hanging nodes as
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Multiscale analysis of composite pressure vessel structures wound with different fiber tensile force Compos. Struct. (IF 6.3) Pub Date : 2024-03-26 Aleksander Błachut, Jerzy Kaleta, Jerzy Detyna, Barbara Kmiecik, Grażyna Ziętek, Maciej Panek, Mateusz Skoczylas
The aim of this paper is the multiscale investigation of composite pressure vessel structures wound with varying fibre tension. The paper explores the potential of ”programming” the fibre tension force during the winding process of a high pressure hydrogen storage vessel. Two series of vessels were wound with two different tensions: Two series of vessels wound with forces of 3 N and 80 N respectively
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Stiffness-driven design and optimization of a 3D-printed composite prosthetic foot: A beam finite Element-Based framework Compos. Struct. (IF 6.3) Pub Date : 2024-03-25 Abdel Rahman N. Al Thahabi, Luca M. Martulli, Andrea Sorrentino, Marino Lavorgna, Emanuele Gruppioni, Andrea Bernasconi
Composite foot prostheses are traditionally produced via lamination, a process that grants high structural efficiency. However, it is an expensive and time-consuming process. Production rate and customizability are thus limited. Additive manufacturing of composites can be a potential solution to these limitations. This work presents a tool to design and optimize Continuous Fiber-Reinforced Additively
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Modeling dynamic crush behavior of carbon fiber reinforced polymer composite structures using MAT213 Compos. Struct. (IF 6.3) Pub Date : 2024-03-24 R.T. Haluza, R.K. Goldberg, T.M. Ricks, J.M. Pereira, K.L. Koudela, C.E. Bakis
Modeling crushing of carbon fiber reinforced polymer (CFRP) composites is challenging, and current simulation methodologies involve tuning of non-physical parameters. MAT213, a next-generation material model, has advanced functionality to better simulate dynamic impact loading. The objective of the present investigation is to evaluate the potential for using MAT213 to simulate dynamic crushing of CFRPs
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Behavior and design of functionally graded concrete subject to triple impacts of the shaped charge, projectile penetration and explosion Compos. Struct. (IF 6.3) Pub Date : 2024-03-24 Xuexiang Yin, Jianzhong Lai, Longyu Du, Jiehang Zhou, Ningyu Kang
The present issue is how to improve the concrete structure to resist multiple impacts of the tandem warhead. This study developed an approach to design a functionally graded concrete (FGC) structure with fiber-graded (FG) and centralized high-strength aggregates (CHSA) to address this issue. The enhancement of the FG and CHSA in the concrete structure was verified by static mechanical performance tests
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Controllable and scalable gradient-driven optimization design for two-dimensional metamaterials based on deep learning Compos. Struct. (IF 6.3) Pub Date : 2024-03-24 Li Xiao, Zhigang Cao, Haoran Lu, Yuanqiang Cai
A novel gradient-driven rapid optimization design method based on deep learning is proposed to design two-dimensional irregular elastic metamaterials (EMMs). We develop a design network comprising a conditional topology generator (TG) and a bandgap predictor (BGP). TG is applied to controllably generate candidate topological structures with geometric constraints, while BGP serves as a surrogate model
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Experimental study on the fire resistance of all-composite and hybrid web-core sandwich panels for building floors Compos. Struct. (IF 6.3) Pub Date : 2024-03-24 M. Proença, M. Garrido, J.R. Correia, J. Sena-Cruz
Fibre-reinforced polymer (FRP) composites and polymeric foams used in construction are susceptible to elevated temperatures, but little is known about the behaviour of composite sandwich panels under fire exposure. This paper presents an experimental study on the fire resistance of web-core composite sandwich panels with polyurethane foam infill for building floors. Two panel variants were considered:
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Analysis of doubly curved laminated composite shells using hybrid-Trefftz finite element model based on a high order shear deformation theory Compos. Struct. (IF 6.3) Pub Date : 2024-03-24 Subhasankar Dwibedi, M.C. Ray
Static analysis of doubly curved laminated composite shells with rectangular plan form has been carried out using a novel hybrid Trefftz finite element (HTFE) model. A typical higher order shear deformation theory (HSDT) has been used for describing the kinematics of deformations delineating both internal and auxiliary displacement fields. This HSDT allows to derive the system of governing partial
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3D compression-twist lattice metamaterials for surface reconfigurability of future architecture Compos. Struct. (IF 6.3) Pub Date : 2024-03-24 Han Yan, Yi Zhang, Xing Chi Teng, Wei Zhong Jiang, Yi Min Xie, Wen Wang Wu, Wei Qiu Chen, Chuan Zeng Zhang, Xin Ren
Metamaterials refer to a class of materials with special properties, whose characteristics mainly come from the microstructures designed artificially. Among them, those metamaterials with tunable shape and mechanical properties under external stimuli provide a new inspiration for the design of the multifunctional structures. This work deals with the three-dimensional (3D) compression-twist lattice
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Artificial neural network prediction of transverse modulus in humid conditions for randomly distributed unidirectional fibre reinforced composites: A micromechanics approach Compos. Struct. (IF 6.3) Pub Date : 2024-03-24 K. Aghabalaei Baghaei, S.A. Hadigheh
This paper proposes an innovative micromechanics-based artificial neural network (ANN) method to efficiently investigate the transverse modulus of unidirectional fibre/epoxy composites under humid conditions. In this research, a novel approach is developed to establish relations between the geometrical, mechanical, and environmental properties of the microstructure and the material’s performance under
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An evaluation of large diameter through-thickness metallic pins in composites Compos. Struct. (IF 6.3) Pub Date : 2024-03-24 Geoffrey Neale, Vinodhen Saaran, Monali Dahale, Alex Skordos
There is increasing demand for functional through-thickness reinforcement (TTR) in composites using elements whose geometry exceeds limitations of existing TTR methods like tufting, stitching, and z-pinning. Recently, static insertion of large diameter TTR pins into heated prepreg stacks has proven a feasible and robust reinforcement process capable of providing accurate TTR element placement with