Journal of Composite Materials最新文献

{"title":"The effect of automated fiber placement process parameters on interlaminar shear strength of uncured prepreg bonded samples.","authors":"Meisam Kheradpisheh, Amir Hafez Yas, Mehdi Hojjati","doi":"10.1177/00219983241313280","DOIUrl":"10.1177/00219983241313280","url":null,"abstract":"<p><p>The effects of automated fiber placement (AFP) parameters on the inter-laminar bonding between the uncured thermoset prepreg tapes were investigated using a systematic series of experiments and FE analysis. The goal was to optimize inter-laminar bonding during the AFP lay-up process and provide a model for the interlayer bonding of uncured prepreg tapes during this process. The shear strength of the interfacial bonding plays a pivotal role in the formation of planar and non-planar deformations during the automated fiber placement (AFP) process. The quality of this bonding has a significant effect on the quality of the manufactured parts. Besides, the bonding strength is interconnected with various AFP process parameters including compaction roller, feed rate, temperature, and dwell time. Hence, a systematic series of experimental studies are conducted to investigate how changes in process parameters affect the shear strength of single lap joint (SLJ) specimens produced under various process conditions. To fabricate the single-lap joint samples under different conditions, an in-house setup was developed to simulate the AFP process allowing us to control compaction force, feed rate, temperature, and dwell time during the process. The experimental results of the single lap joints indicate that the shear strength of the bonded prepreg tows is significantly influenced by the interaction among the process parameters rather than by their individual, isolated effects. Moreover, the responses of prepreg SLJs are simulated using the FE method. Through the comparison of numerical and experimental results, it will be clearly shown that the developed FE framework can act as a reliable approach for modeling the bonding layer between prepreg tapes.</p>","PeriodicalId":15489,"journal":{"name":"Journal of Composite Materials","volume":"59 12","pages":"1477-1491"},"PeriodicalIF":2.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11964850/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143795495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Micromechanics-based multi-scale framework with strain-rate effects for the simulation of ballistic impact on composite laminates","authors":"Christoforos Rekatsinas, Theodosios Theodosiou, Dimitrios Siorikis, Konstantinos Tsiaktanis, Nikolaos Chrysochoidis, Christos Nastos, Dimitris Saravanos","doi":"10.1177/00219983241283618","DOIUrl":"https://doi.org/10.1177/00219983241283618","url":null,"abstract":"The performance of composite materials and structures at high-velocity impacts reaching or exceeding their ballistic limit is crucial for assessing their strength and safety in aerospace applications. In this highly transient impact regime, composite materials are subject to multiple complex failure modes and their properties are susceptible to strain rate effects, making very challenging the simulation and understanding of their ballistic impact performance. This study presents: (1) a multi-scale computational framework for predicting the ballistic limit of composite plates, and (2) experimental results of ballistic impacts on carbon/epoxy plates. The multi-scale model uses a micromechanical approach to account for strain-rate dependency, to calculate micro-stress effects on the matrix and fiber properties, and to predict their coupled effect on effective composite properties. Intralaminar damage initiation and evolution are identified using the maximum stress criterion, but the degradation of properties in the matrix and fibers is predicted with the micromechanics model. Mixed-mode damage laws are implemented to simulate delamination, which guarantees accurate and reliable results. The proposed multi-scale model has been implemented and integrated into ABAQUS/Explicit (VUMAT). Experimental results from high-velocity steel ball impacts on woven IM-65 Carbon/RTM6 epoxy composite plates conducted on a high-speed impact test bench are also presented including non-destructive evaluation of the types of damage and failure. The experimental results are finally used to validate the model predictions for the ballistic limit and the predicted types of damage and failure.","PeriodicalId":15489,"journal":{"name":"Journal of Composite Materials","volume":"18 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142262809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recycling catfish bone for additive manufacturing of silicone composite structures","authors":"Saad Aqerrout, Di Wu, Fei Yu, Wenbo Liu, Yuke Han, Jiaqi Lyu, Yi Jing, Xiaoran Yang","doi":"10.1177/00219983241283607","DOIUrl":"https://doi.org/10.1177/00219983241283607","url":null,"abstract":"As a notable commercial aquaculture species, channel catfish ( Ictalurus punctatus) in US faces challenges including the global market competition and enhanced feed costs. Since fish bone waste is a major source of calcium and hydroxyapatite, re-utilization gives birth to several advanced products in the development of animal feed, fertilizers, and nutrition supplements. Recent research findings introduce fish bone powder (FBP) reinforcement in Fused Deposition Modeling (FDM) of plastic composites. However, FBP so far has not been widely utilized for Direct Ink Writing (DIW) 3D printing of silicone composite. In this paper, catfish bone waste has been recycled and processed with a thermal procedure. FBP reinforced silicone composite structures have been developed and manufactured using low-viscosity DIW 3D printing. Morphological and chemical structures of FBPs were analyzed and compared before and after calcination. The rheological and mechanical characterization have indicated the potential of calcinated FBP in advancing the silicone composites. With 0%–50% weight percentages of FBP, composite samples can be designed to get any specified mechanical response (0.5–1.4 MPa in 50% tension strain and 150–550 N in 30% compression strain). The shape holding, overhang, and dimensional accuracy of FBP reinforced silicone composites in single (DIW) and dual (FDM + DIW) 3D printing processes have been demonstrated and summarized. With appropriate adjustments, this FBP-based 3D printing technology can be applied to byproduct recycling of all the US food-fish species, poultry, and livestock.","PeriodicalId":15489,"journal":{"name":"Journal of Composite Materials","volume":"68 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical performances of unsatured polyester composite reinforced by OleaEuropea var. Sylvestris fibers: Characterization, modeling and optimization of fiber textural properties","authors":"Kamal Saidani, Djamel Nibou, Hadda Aya Hammoudi","doi":"10.1177/00219983241276934","DOIUrl":"https://doi.org/10.1177/00219983241276934","url":null,"abstract":"A mechanical performance of synthesizedunsatured polyester (UP) composite reinforced by OleaEuropea var. Sylvestris fibers was studied by applying the complete 2<jats:sup>3</jats:sup> factorial plan of experience. The variables orientation angle (V1), length (V2) and ratio (V3) of these fibers have been investigated. The experimental design was used to evaluate these factors on the Young’s modulus and the maximum stress. The textural properties of the fibers were highlighted by XRD, SEM, EDS and FTIR. According to the experimental designresults, the V1 and V2 factors are the most influential and the V1V2/V2V1 and V1V3/V3V1 interactions are the most significant. The significance Student’s tests of all effects were found non negligible and significant and the validation of the proposed linear models was verified by using analysis of variance (ANOVA). The study of the fracture facies of specimens of various experimental configurations by SEM showed the direct dependence of factors V1, V2 and V3 and their interactions on the improvement of the mechanical properties. Five deterioration zones were detected and identified as matrix cracking, longitudinal intra fiber cracking, fiber-matrix decohesion, fiber-matrix loosening and strong fiber-matrix cohesion.","PeriodicalId":15489,"journal":{"name":"Journal of Composite Materials","volume":"1 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parametric process optimisation of automated fibre placement (AFP) based AS4/APC-2 composites for mode I and mode II fracture toughness","authors":"Shafaq Shafaq, Matthew J Donough, Ebrahim Oromiehie, Faisal Islam, Andrew W Phillips, Nigel A St John, B Gangadhara Prusty","doi":"10.1177/00219983241283598","DOIUrl":"https://doi.org/10.1177/00219983241283598","url":null,"abstract":"In-situ consolidation of thermoplastic composites using Automated Fibre Placement (AFP) technology is an emerging manufacturing technique, offering tailored composite properties through customised processing parameters. Multiple competing parameters during AFP manufacturing influence the quality and mechanical performance of the laminates. These lay-up parameters are interrelated, and often require comprehensive experimental characterisation which is costly and time-intensive. This study aims to optimise the fracture toughness of in-situ consolidated thermoplastic composite (AS4/APC-2) and investigate the mechanisms that contribute to it. Taguchi’s method is employed to efficiently analyse the effect of various process parameters at multiple levels. Based on the obtained results, a considerable effect of process parameters on Mode I and II fracture toughness is observed. The statistical analysis reveals that the Hot Gas Torch (HGT) temperature required for AFP processing significantly affects the Mode I fracture toughness, contributing to 33.8%. Whereas, the consolidation force, another key processing parameter in AFP notably affects Mode II fracture toughness, with the contribution of 81.8%. The analysis of variance (ANOVA) reveals interdependent processing parameter relations for both fracture modes. A validation test showed good agreement between the predicted fracture toughness and the experimental test.","PeriodicalId":15489,"journal":{"name":"Journal of Composite Materials","volume":"10 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elastic properties identification of a bio-based material in tertiary packaging: Tools and methods development","authors":"Mohamed Hichem Saihi, Sonia Sassi, Francis Collombet, Yves-Henri Grunevald, Yves Davila, Redouane Zitoune","doi":"10.1177/00219983241284038","DOIUrl":"https://doi.org/10.1177/00219983241284038","url":null,"abstract":"This study focuses on the use of bio-based materials for structural purposes in the packaging field, which requires the identification of their mechanical properties at a representative scale. The mechanical properties of bio-based materials are more variable than those of traditional composite materials. In a standard characterization approach using elemental coupons under uniaxial loading, the variability depends on the chosen representative elementary volume (REV), free edges, boundary conditions, etc. for elastic properties that are not identified for representative working conditions; this could lead to the ineligibility of these bio-based materials as structural materials. This paper contributes to the debate on how to study the response of bio-based materials within a structure, here a packaging structure as a logistic unit (LU) subjected to a compressive load simulating storage and stacking conditions. In the set of tools and methods for the design of packaging materials made of bio-based materials, an elastic nonlinear geometric finite element model (FEM) and an experimental approach are presented. The FEM allows the numerical identification of zones of interest within the LU. Inevitably, the FEM classically requires input data which are elastic properties of the equivalent homogeneous material. The design of the FEM is based on a calculation-test approach using an existing reference LU and it can be summarized in two main steps. The first step concerns the development of a FEM able to restore the experimental conditions of vertical compression imposed by transport standards for packaging. The second step is based on updating the input properties of the FEM by reverse identification, to achieve the representative working condition properties, using experimental results obtained on the existing reference LU. For the reverse identification a multi-scale investigation is mandatory. For this purpose, the linear elastic part of the load/vertical displacement curves (at the LU stiffness scale) and the displacement and strain fields measured (at the local LU scale) by 3D digital image correlation (3D DIC) are evaluated. Then, FEM property updating is carried out by reducing the deviation of displacement/strain fields between FEM and experimentally measured results (3D DIC). Finally, we explain how FEM and 3D DIC help in decision-making by allowing the recognition of zones of interest in a phase of design of new LUs with the concept of Multi-Instrumented Technological Evaluator (MITE).","PeriodicalId":15489,"journal":{"name":"Journal of Composite Materials","volume":"10 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A physics-informed machine learning model for global-local stress prediction of open holes with finite-width effects in composite structures","authors":"Omar Ahmed Imran Azeem, Silvestre T Pinho","doi":"10.1177/00219983241281073","DOIUrl":"https://doi.org/10.1177/00219983241281073","url":null,"abstract":"Fast and accurate methods are required to predict stresses in the vicinity of open and closed holes in composite structures, especially in a global-local modelling context as applied during the design of airframe structures. Fast analytical solutions for infinite-width anisotropic plates with open holes do not consider finite-width effects. Heuristic methods and semi-analytical solutions can be used to towards addressing such effects. To improve the accuracy and speed of these respective methods, we use machine learning (ML) methods trained on high-fidelity finite element analyses to make finite-width corrections. However, such methods require large amounts of training data to reduce errors to satisfactory levels. Therefore, in this study, the fusion of analytical solutions with machine learning is performed. We develop an analytical solution-informed ML model that is as fast as an analytical solution and superior in accuracy to analytical solutions with heuristic finite-width scaling. Our informed ML model offers accuracies equal to analytical solutions for the infinite-width case, and it is capable for use in a global-local modelling context, under uniaxial and biaxial loading. Our informed ML model outperforms prediction accuracy across all cases compared to uninformed ML models and requires a significantly lower size training dataset size.","PeriodicalId":15489,"journal":{"name":"Journal of Composite Materials","volume":"45 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid identification of the coefficient of moisture expansion of polymer materials by the employment of plates with asymmetric concentration fields","authors":"Marianne Beringhier, Marco Gigliotti, Paolo Vannucci","doi":"10.1177/00219983241268882","DOIUrl":"https://doi.org/10.1177/00219983241268882","url":null,"abstract":"The paper pursues the development of a novel methodology for the rapid identification of the diffuso-mechanical properties of polymer materials based on the employment of plates subject to asymmetric moisture concentration fields. The study is carried out on epoxy plate samples equipped with a thin aluminium foil on a surface exposed to the environment to promote asymmetric moisture absorption. The asymmetric moisture fields promote deformations of the plate. Mass gain and plate curvatures are measured as a function of time during conditioning. By using a weakly coupled diffuso-mechanical model: 1D Fick’s diffusion model and 2D plane stress hygroelastic model the diffuso-mechanical properties of the material can be then identified. Due to the chosen size of the experimental samples the present study allows the identification of the coefficient of moisture expansion of the epoxy material. For the material under study, the following values can be identified for saturation mass gain, water diffusivity and coefficient of moisture expansion respectively: 1.67%, 0.025 mm<jats:sup>2</jats:sup>.h<jats:sup>−1</jats:sup>, 0.1628.","PeriodicalId":15489,"journal":{"name":"Journal of Composite Materials","volume":"6 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis of polymeric microcapsules filled with castor oil to enhance tribological properties in epoxy resin","authors":"Mariza Fernandes, Juliana Souza, Ana Leticia Santos, Pamella Medeiros, Mauricio Bomio, Maria Costa","doi":"10.1177/00219983241276932","DOIUrl":"https://doi.org/10.1177/00219983241276932","url":null,"abstract":"The addition of microcapsules (MCs) to a polymer matrix has been gaining attention because it facilitates the attainment of composite materials with better mechanical, chemical and functional properties that enhance its tribological properties. In this work, poly (urea formaldehyde) (PUF) microcapsules filled with castor oil were synthesized using an in situ polymerization method and then added to the epoxy matrix at mass percentages of 2.5%, 5% and 10%. Spherical microcapsules were obtained with the desired composition, confirmed by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) images. The surface of the composites was analyzed using the roughness parameters Ra, Rq, Rz, Rsk and Rku. The preliminary tribological properties were evaluated using tests with a pin-on-disk configuration. After the tribological tests, the wear track was characterized using SEM images. There was a reduction of approximately 50% in the coefficient of friction of the composites studied and the specimen with 2.5% microcapsules had the best self-lubricating performance, considering the characterizations of roughness and track sinking.","PeriodicalId":15489,"journal":{"name":"Journal of Composite Materials","volume":"234 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of pre-curing on thermoplastic-thermoset interphases","authors":"Adam Fisher, Arjun Radhakrishnan, Arthur Levy, Julie Teuwen, James Kratz","doi":"10.1177/00219983241271007","DOIUrl":"https://doi.org/10.1177/00219983241271007","url":null,"abstract":"This study considered adhesion between thermoplastic and thermoset laminates through interdiffusion at the interface. The influence of the degree of cure of the thermoset at the start of the process was investigated through mechanical testing and microscopy. Increasing the initial degree of cure decreased both interlaminar fracture toughness and interphase thickness. Fracture toughness decreased disproportionately to interphase thickness, attributed to changes in interphase morphology and decreasing surface contact at the interface. A simplified model was developed using gel layer thickness measurement data to predict the level of interdiffusion with increasing initial degree of cure. Compared to thermoset-thermoset co-curing, there was superior bond strength at low initial degrees of cure and a predicted increased sensitivity to the initial degree of cure, suggesting a greater influence of process variability. Hence, for specific property critical applications, the trade-off between the potential manufacturing efficiency gains from semi-curing and the reduced performance would be an important consideration.","PeriodicalId":15489,"journal":{"name":"Journal of Composite Materials","volume":"57 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142207013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}