Article
Mechanics
Paulo Teixeira Goncalves, Albertino Arteiro, Nuno Rocha
Summary: During the manufacturing of thermoset-based CFRPs, micro-residual stresses are developed in the material, leading to a reduction in the mechanical performance. This study proposes a representative volume element (RVE) to investigate the micro-residual stresses and ply mechanical response considering the in-situ effect caused by adjacent layers. The results show that thick laminates exhibit more residual stresses in the transverse layer and have lower constrained strength and more unstable post-failure response, while thin-ply laminates exhibit beneficial constraining effects during the curing process.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Megha Sahu, Ashok M. Raichur
Summary: The current study investigates the use of graphene oxide and nano & hollow silica particle composite as a reinforcing agent to enhance the mechanical and thermal properties of tetrafunctional epoxy nanocomposites. The unique architecture of the reinforcing agent prevents agglomeration and facilitates incorporation into epoxy matrices. The modified epoxy nanocomposites showed significant improvements in compressive, flexural, and fracture properties compared to neat epoxy.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Engineering, Multidisciplinary
Cristofaro S. Timpano, Garrett W. Melenka
Summary: This study introduces a methodology for obtaining optimal DVC image datasets for composite materials by adding contrast particles to an epoxy resin. The 25 μm copper particles were found to provide the greatest accuracy. Comparison between downsampled ?-CT and full-resolution datasets demonstrated processing strategies for DVC analysis.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Polymer Science
Aleksandra Jelic, Milica Sekulic, Milan Travica, Jelena Grzetic, Vukasin Ugrinovic, Aleksandar D. Marinkovic, Aleksandra Bozic, Marina Stamenovic, Slavisa Putic
Summary: This study synthesized four different silicate nanofillers and incorporated them into epoxy resin to enhance its mechanical properties. Characterization of the nanofillers and analysis of the composite materials were carried out using various techniques. The results showed that the addition of 3% of the nanofillers increased the tensile strength of the epoxy by 31.5%, 29.0%, 27.5%, and 23.5%, respectively.
Article
Engineering, Manufacturing
Michael Yeager, Pavel Simacek, Suresh G. Advani
Summary: This study presents a three-dimensional numerical model for predicting the impregnation and distribution of resin in fiber tows. By conducting a parametric study with this model, it is possible to design a process that achieves the desired porosity distribution within the tows, resulting in the manufacturing of hybrid resin composites. This is significant for tailoring the properties of composites by strategically placing resin within fiber tows.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Composites
Mahoor Mehdikhani, Christian Breite, Yentl Swolfs, Jeroen Soete, Martine Wevers, Stepan V. Lomov, Larissa Gorbatikh
Summary: This study explores the potential of Digital Volume Correlation (DVC) in detecting and characterizing damage in fiber-reinforced composites using in-situ X-ray Computed Tomography. Through preliminary analysis of digital deformation images and real-deformation images acquired during in-situ tensile loading, DVC proves to be a promising tool for quantification of deformation and damage at both mesoscale and microscale levels. Damage mechanisms in fiber-reinforced composites are successfully detected and characterized using DVC, showing the limitations of traditional methods like grayscale thresholding.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Review
Biotechnology & Applied Microbiology
Mohammad Maghsoudi-Ganjeh, Crystal A. Mariano, Samaneh Sattari, Hari Arora, Mona Eskandari
Summary: Pulmonary diseases driven by pollution, industrial farming, vaping, and the COVID-19 pandemic are increasing morbidity and mortality rates globally. Computational biomechanical models offer enhanced predictive capabilities to understand fundamental lung physiology. A novel reduced-order surface model of the lung has been developed in this study to address the complexities of lung structure and lack of mechanical experiments.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
T. Nagoshi, Y. Harada, S. Nakasumi, N. Yamazaki, K. Hasegawa, K. Takagi, W. Peng, G. Fujii, M. Ohkubo
Summary: Cohesive failure in the epoxy adhesive layers of carbon-fiber-reinforced plastic (CFRP) joints is a perplexing issue. This study reveals that micrometer-scale defects may contribute to the occurrence of cohesive failure and proposes a new phenomenological model to explain this behavior. These findings are of significant importance for enhancing the reliability of CFRP components.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Engineering, Manufacturing
Nathan Klavzer, Sarah F. Gayot, Michael Coulombier, Bernard Nysten, Thomas Pardoen
Summary: Multiscale mechanical modelling aims to predict composite failure from the nanoscale to the macroscopic level. However, existing frameworks are limited by the lack of reliable experimental data and incomplete understanding of submicron deformation and failure mechanisms. A novel digital image correlation (DIC) method has been developed for characterizing the nanoscale mechanical response in composites, using surface patterning. This method has successfully captured strain concentration areas in two different composite systems and results were compared with alternative experimental data and finite element simulations.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Mechanics
John Holmes, Silvano Sommacal, Zbigniew Stachurski, Raj Das, Paul Compston
Summary: The study combined DIC with mu CT and DVC to assess the deformation and damage of woven composites, showing that differences in loading direction and fiber waviness cause significant differences in surface topography, strain, and internal out-of-plane deformation. The techniques were effective for characterizing woven composite deformation and have potential for improving finite element simulations in the future.
COMPOSITE STRUCTURES
(2022)
Review
Mechanics
John Holmes, Silvano Sommacal, Raj Das, Zbigniew Stachurski, Paul Compston
Summary: Digital image and volume correlation (DIC and DVC) are used to measure the deformation and damage behavior of composite materials. The heterogeneous nature of the composite microstructure results in complex local behavior that cannot be captured using traditional techniques. DIC and DVC offer significant advantages in monitoring this behavior for fiber-reinforced composite materials. The careful consideration of testing setup and approach is crucial for achieving accurate results.
COMPOSITE STRUCTURES
(2023)
Article
Computer Science, Software Engineering
Victor Couty, Jean-Francois Witz, Pauline Lecomte-Grosbras, Julien Berthe, Eric Deletombe, Mathias Brieu
Summary: This article introduces an open-source Integrated Digital Image Correlation (I-DIC) software, which is designed to run at high frequencies using CUDA-enabled GPUs. The software uses a global approach for field computation and can be applied in various applications, with one demonstration being a bi-axial tensile test on a cruciform specimen in experimental mechanics.
Article
Materials Science, Composites
Erick S. S. Guerra, Bruna L. Silva, Jose D. D. Melo, Gerhard Kalinka, Ana P. C. Barbosa
Summary: This study investigates the influence of thermoplastic particles on the fiber-matrix interfacial properties of a glass fiber reinforced epoxy matrix composite, and demonstrates the self-healing ability of the thermoplastic modified epoxy.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Agricultural Engineering
Ying Yao, Hao Dou, Tao Liu, Shujuan Wang, Yuan Gao, Jingyu Kang, Xingzhong Gao, Changlei Xia, Yao Lu, Wei Fan
Summary: Enzymatic treatment on sisal fiber surface improves the interfacial properties with bio-based epoxy resin, enhancing the mechanical properties of composites.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Construction & Building Technology
Lukasz Skarzynski, Ireneusz Marzec
Summary: The paper presents experimental and numerical investigations of shear fracture in rectangular concrete beams reinforced with steel or basalt bar under quasi-static three point bending. Various techniques were used to study and analyze the shear fracture process zone and material micro-structure, air voids, and shear cracking characteristics. The results of experiments and numerical simulations showed satisfactory agreement in terms of failure mechanism, load-bearing capacity, and cracking patterns.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Composites
C. Breite, A. Melnikov, A. Turon, A. B. de Morais, F. Otero, F. Mesquita, J. Costa, J. A. Mayugo, J. M. Guerrero, L. Gorbatikh, L. N. McCartney, M. Hajikazemi, P. P. Camanho, R. P. Tavares, S. Lomov, S. Pimenta, W. Van Paepegem, Y. Swolfs
Summary: This paper presents a blind benchmark of seven different models applied to two virtual materials for prediction of longitudinal tensile failure of unidirectional composites. Capturing the localization of stress concentrations was vital in predicting the effect of matrix stiffness and strength on composite failure strain and strength as well as fiber break and cluster development. The discussions provide insight into how model assumptions are linked to the differences in predictions.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Mechanics
Tobias Laux, Khong Wui Gan, Rodrigo P. Tavares, Carolina Furtado, Albertino Arteiro, Pedro P. Camanho, Ole T. Thomsen, Janice M. Dulieu-Barton
Summary: The study assesses a meso-scale damage modelling framework for composite laminates using experimental data obtained from a modified Arcan fixture. The model predicts multi-axial open-hole specimen strength with a mean relative error of 15%, showing good agreement with full-field measurements but revealing limitations in predicting shear-dominated damage modes.
COMPOSITE STRUCTURES
(2021)
Review
Biochemistry & Molecular Biology
Federico Danzi, Rui Martim Salgado, Joana Espain Oliveira, Albertino Arteiro, Pedro Ponces Camanho, Maria Helena Braga
Summary: Structural power composites offer a possible solution for the demands of modern transportation system. Recent studies have demonstrated the integration of commercially available lithium-ion batteries into composite structures and the fabrication of carbon fiber-based multifunctional materials for monolithic structural batteries. Challenges include the maximum curing cycle for embedded configuration and the need for highly conductive structural electrolytes.
Article
Mechanics
Giuseppe Catalanotti, Rui M. Salgado, Pedro P. Camanho
Summary: The study numerically computed Stress Intensity Factors (SIFs) for cracks emanating from circular holes in two-dimensional orthotropic bodies, considering the effect of geometry and orthotropy. A semi-analytical expression for the correction factor was found by fitting the numerical data. It was also demonstrated how the same expression can be applied to calculate the SIF for cracks emanating from elliptical holes with appropriate changes of variables.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Materials Science, Composites
F. Danzi, R. P. Tavares, J. Xavier, D. Fanteria, P. P. Camanho
Summary: This study investigates the potential of a ply-level hybridization technique in carbon/epoxy composite materials to promote pseudo-ductile failure and enhance fracture toughness. The results show that while the hybridization can lead to pseudo-ductile failure in tension, the increased fracture toughness is mainly attributed to the ply-thickness effect.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Biochemistry & Molecular Biology
Federico Danzi, Pedro Ponces Camanho, Maria Helena Braga
Summary: The all-solid-state structural battery presented in this study combines a Na+-based ferroelectric glass electrolyte with metallic electrodes/current collectors, achieving high energy density and enhanced thermal properties. It also improves mechanical performance, while being a valid and safe alternative energy reservoir for applications where traditional lithium-ion batteries are not suitable, due to the absence of alkali metals and liquid electrolytes.
Article
Mechanics
C. Breite, A. Melnikov, A. Turon, A. B. de Morais, C. Le Bourlot, E. Maire, E. Schoberl, F. Otero, F. Mesquita, I Sinclair, J. Costa, J. A. Mayugo, J. M. Guerrero, L. Gorbatikh, L. N. McCartney, M. Hajikazemi, M. Mehdikhani, M. N. Mavrogordato, P. P. Camanho, R. Tavares, S. M. Spearing, S. Lomov, S. Pimenta, W. Van Paepegem, Y. Swolfs
Summary: This study experimentally validated blind predictions of six state-of-the-art models on the longitudinal tensile failure of unidirectional fibre-reinforced composites. It was found that models without major conservative assumptions regarding stress redistributions around fibre breaks tend to overestimate failure strains and strengths, while models with at least one such assumption showed better agreement for these properties. The study also revealed that all models failed to accurately predict the development of fibre break (and cluster).
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Joao M. Machado, Joao Manuel R. S. M. Trvares, Pedro P. Camanho, Nuno Correia
Summary: This study proposes a machine-learning approach based on a convolutional neural network architecture to automatically parse the void content of optical microscopy images without parameter tuning. Experimental results show that this approach accurately parses void content from microscopy images, outperforming traditional thresholding algorithms.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Igor A. Rodrigues Lopes, Pedro P. Camanho, Francisco M. Andrade Pires, Albertino Arteiro
Summary: An invariant-based constitutive model for unidirectional composites, including viscous effects in the elastic and plastic regimes at finite strains, is proposed. The model utilizes a multiplicative decomposition of the deformation gradient and an isoclinic configuration to avoid intermediate configuration non-uniqueness. It incorporates visco-elastic behavior through the generalised Maxwell model, with a transversely isotropic yield function and a non-associative plastic potential. Visco-plastic effects are introduced through the Perzyna overstress function. The performance of two algorithms for implicit integration is compared, with the semi-implicit stress update algorithm being faster and the fully implicit stress update algorithm guaranteeing quadratic convergence rate in the Newton-Raphson scheme. The model accurately predicts stress-strain responses for different fiber orientation angles and captures fiber re-orientation due to external loading.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Mechanics
Fujian Zhuang, Albertino Arteiro, Rodrigo P. Tavares, Pedro P. Camanho, Puhui Chen
Summary: This paper presents the development and validation of a mesoscale numerical model to predict the bearing failure of composite laminates reinforced by unidirectional continuous fibers, focusing on specimens that show a significant non-linear response prior to failure. Thorough analyses and comparisons of the experimental and numerical results show a good correlation of the bearing strengths and overall deformation, as well as good agreement in terms of damage size and damage shape. Relevant limitations include difficulties in predicting the post-peak plateau stresses and the loading displacements in some configurations, setting the stage for additional future research.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Bing Yan, Mingbo Tong, C. Furtado, Federico Danzi, A. Arteiro, Song Pan, Xiong Pan, Pedro P. Camanho
Summary: This article introduces an Improved Semi-analytical Method (ISM) as a quick design tool for predicting and optimizing the strength of composite scarf repair structures. It proves the feasibility of applying this method and shows its accuracy in predicting the tensile strength of scarf repair structures.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Manufacturing
I. R. Cozar, F. Otero, P. Maimi, E. Gonzalez, S. Miot, A. Turon, P. P. Camanho
Summary: A new 3D elastoplastic damage model is proposed to predict the plastic deformation and progressive failure of composite materials. The model is validated through various tests and shows good agreement with experimental data.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Mechanics
Federico Danzi, Pedro J. Silva Campos, Albertino Arteiro, Denis Dalli, Carolina Furtado, Jeremy Chevalier, Rodrigo P. Tavares, Frederic Lani, Pedro P. Camanho
Summary: This paper presents a study on the longitudinal fracture toughness of thermoplastic-based composite materials. It explores the relationship between size-effect laws and crack resistance curves using double-edge notched (DEN) specimens. The study also features the use of SEM and fractographic images to capture the main failure mechanisms, as well as CT scanning to observe early stages of crack propagation. Overall, this investigation provides a qualitative and quantitative analysis of characteristic intra-laminar failure mechanisms in thermoplastic composites.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Mechanics
Anatoli Mitrou, Albertino Arteiro, Jose Reinoso, Pedro P. Camanho
Summary: In this study, an equivalent single layer approach using the Phase Field method is developed to model fracture events in multidirectional balanced thin-ply laminates. The anisotropic nature of the laminates is accounted for by introducing a structural tensor based on scaled directional vectors. The scaling constants are defined using the laminate lay-up and intra-laminar fracture toughness, reducing the number of input parameters and providing a new perspective on their definition. The proposed formulation is implemented using an anisotropic conductivity matrix in Abaqus, simplifying the simulations. Experimental results are successfully reproduced, validating the model for size effects and off-axis loading responses.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Astronomy & Astrophysics
Thomas Pardoen, Nathan Klavzer, Sarah Gayot, Frederik Van Loock, Jeremy Chevalier, Xavier Morelle, Vincent Destoop, Frederic Lani, Pedro Camanho, Laurence Brassart, Bernard Nysten, Christian Bailly
Summary: Significant progress has been made in nanomechanical testing and modeling in the past two decades, revealing the properties of materials at micro- and nanoscales. Various testing methods and modeling techniques have enriched the field, but there are still open issues to resolve, particularly in advancing the predictive potential of multiscale modeling for non-linear plasticity and fracture phenomena.
COMPTES RENDUS PHYSIQUE
(2021)
Article
Mechanics
Rawan Aqel, Patrick Severson, Rani Elhajjar
Summary: A novel core splice joint configuration for composite sandwich structures is studied and proposed to improve the strength and toughness. Experimental and numerical efforts show that this configuration can significantly increase the ultimate strength by 13% to 51% and the toughness by 2% to 35%.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xianheng Wang, Cong Chen, Jinsong Zhang, Xinming Qiu
Summary: In this paper, a new form-finding method based on spatial elastica model (FMSE) is proposed for elastic gridshells. The method integrates the deformations of elastic rods into the overall deformation of the gridshell, and solves a set of transcendental equations using the quasi-Newton method to ensure the deformation satisfies the given boundary conditions. The method is validated through experiments and expected to have potential applications in the investigations of elastic gridshells.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Hao Huang, Zitong Guo, Zhongde Shan, Zheng Sun, Jianhua Liu, Dong Wang, Wang Wang, Jiale Liu, Chenchen Tan
Summary: The conventional evaluation of 3D braided composites' mechanical properties through numerical and experimental methodologies hinders material application due to the expenses, time constraints, and laborious efforts involved. This study establishes a multi-scale finite element model and a surrogate model for predicting the elastic properties of 3D4D rotary braided composites with voids. By optimizing a neural network model, the results are validated and provide valuable insights into the microstructure and properties of these composites.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Xinyu Li, Hao Zhang, Haiyang Yang, Junrong Luo, Zhongmin Xiao, Hongshuai Lei
Summary: Due to their excellent mechanical properties and design flexibility, fluted-core composite sandwich structures have gained significant attention in aerospace and rail transit applications. This study investigated the free-vibration characteristics and optimized design of composite fluted-core sandwich cylinders through theoretical models and experimental tests.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Chao Li, Chunzheng Duan, Xiaodong Tian, Chao Wang
Summary: A mechanistic model considering the bottom edge cutting effect and the anisotropic characteristics of the material is proposed in this paper to accurately predict cutting forces. The model was validated through a series of milling experiments and can be used to predict the cutting force of various parts of the cutter and any feed direction.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Camila Sanches Schimidt, Leopoldo Pisanelli Rodrigues de Oliveira, Carlos De Marqui Jr
Summary: This work investigates the vibro-acoustic performance of graded piezoelectric metamaterial plates. The study shows that piezoelectric metamaterial plates with reconfigurable properties can provide enhanced vibration and sound power attenuation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jun Ke, Li-jie Liu, Zhen-yu Wu, Zhong-ping Le, Luo Bao, Dong-wei Luo
Summary: Compared with other green natural fibers, ramie has higher mechanical properties and lower cost. In this study, ramie and glass fiber are made into composite circular tubes. The results show that the hybrid circular tube with ramie and glass fiber has improved torsional mechanical properties and reduced weight and cost. The failure mechanisms are affected by the loading direction and the content of each fiber.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Natalia Pingaro, Gabriele Milani
Summary: This paper proposes an enhanced analytical model for predicting the behavior of FRCM samples tested under standard tensile tests. The model takes into account the interaction between fibers and matrix through the interface, and assumes different material properties at different phases. By solving a second order linear differential equation, an analytical solution can be obtained. The model is validated with experimental data and shows good predictability.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Jialiang Fan, Anastasios P. Vassilopoulos, Veronique Michaud
Summary: This article investigates the effects of voids, joint geometry, and test conditions on the fracture performance of thick adhesive Double Cantilever Beam (DCB) joints. It concludes that grooved DCB joints with low void content tested at low displacement rates showed stable crack propagation without significant crack path deviation.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Auwalu I. Mohammed, Kaarthikeyan Raghupathy, Osvaldo De Victoria Garcia Baltazar, Lawson Onokpasah, Roger Carvalho, Anders Mogensen, Farzaneh Hassani, James Njuguna
Summary: This study investigates the performance of composite pressure vessels under damaged and undamaged conditions, providing insights into their reliability and residual strength capabilities. The results demonstrate that the damage profile and its effect on compressive strength are similar between damaged and non-damaged cylinders. When subjected to quasi-static compression, the polyethylene liner absorbs enough elastic strain energy to recover without plastic deformation. Additionally, quasi-static compression has little to no influence on the axial strength of the cylinders. The damage characterization reveals fiber breakage, delamination, local buckling, and brooming failure. This study has direct implications for the safety design tolerances, manufacturing strategies, and operational failure conditions of composite overwrapped pressure vessels (COPVs).
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Muhammad Irfan Shirazi, Samir Khatir, Djilali Boutchicha, Magd Abdel Wahab
Summary: Structural health monitoring is important to ensure the safety of components and structures. This study proposes a method using finite element models and 1D-CNN network to extract and classify vibration responses for crack detection. The results show that the proposed approach is effective in real-time damage detection.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Maryam Mirsalehi, Kiarash Kianpour, Sharif Shahbeyk, Mohammad Bakhshi
Summary: This study comprehensively investigates the one-way response of 3D-woven sandwich panels (3DWSPs) and their interfering parameters, providing interpretation of elastic and failure results, failure maps, and reliable theoretical models for linear elastic response and observed failure mechanisms.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Yiming Zhao, Zhonggang Wang, Zhigang Yang, Bin Qin
Summary: The paper proposes a Ritz and statistical energy analysis (Ritz SEA) hybrid method for calculating rectangular plate acoustic vibration coupling in the mid-frequency range. This method combines the fast convergence and ability to handle arbitrary boundary conditions of the Ritz method with the power flow equation of the statistical energy analysis method. The results show that this approach effectively filters out random fluctuations in mid-frequency domains while demonstrating exceptional stability and precision.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Joao Henrique Fonseca, Woojung Jang, Dosuck Han, Naksoo Kim, Hyungyil Lee
Summary: This study addresses the enhancement of an injection-molded fiber-reinforced plastic / metal hybrid automotive structure and its plastic injection molding process through the integration of the finite element method, artificial intelligence, and evolutionary search methods. Experimental validation of finite element models, the generation of a database through orthogonal array and Latin hypercube methods, and the training of artificial neural networks are conducted. The genetic optimization algorithm is then applied to identify optimal process parameters. The results show significant reduction in product warpage and manufacturing time while maintaining structural strength, contributing to the advancement of composite automotive structures with superior quality.
COMPOSITE STRUCTURES
(2024)
Article
Mechanics
Alessandro Vescovini, Carina Xiaochen Li, Javier Paz Mendez, Bo Cheng Jin, Andrea Manes, Chiara Bisagni
Summary: This paper presents a study on six single-stringer specimens manufactured using the card-sliding technique with non-crimp fabrics and adopting a Double-Double (DD) stacking sequence. The specimens were tested under compression loading conditions to investigate post-buckling and failure in aerospace structures. Experimental results and numerical simulations were compared to analyze the behavior and failure modes of the specimens. The study found promising evidence of a viable solution to optimize aeronautical structures and enhance resistance to skin-stringer separation, particularly with the use of tapered flanges.
COMPOSITE STRUCTURES
(2024)
