Article
Materials Science, Composites
J. L. Liu, J. Zhi, H. L. Wong, E. S. Sugeng, T. E. Tay, V. B. C. Tan
Summary: The effect of ply blocking on high-speed impact of CFRP laminates is investigated. It is found that ply blocking significantly affects the ballistic limit and modes of damage. As the level of ply blocking increases, resistance to fiber damage increases but it becomes easier for projectiles to slip through between fibers. A new laminate layup is designed to mitigate the effects of ply blocking.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
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, Manufacturing
Wenkai Chang, L. R. Francis Rose, Shuying Wu, Anthony J. Kinloch, Chun H. Wang
Summary: A new analysis is proposed to explain the transition of crack growth in cross-ply laminates. Micromechanical model simulations show that crack opening increases with applied strain, indicating an R-curve effect. By independently determining the R-curves and predicting crack growth in different thicknesses of constrained plies, the study confirms the dependency of crack growth behavior on ply thickness. The approach reduces computational burden and enables investigations on material properties.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Engineering, Mechanical
Yu Gao, Jian Wang, Xiaowen Song, Huiming Ding, Han Wang, YunBo Bi, Yinglin Ke
Summary: This study explores the compressive failure behavior of ultra-thick laminates and finds that delamination plays a key role in the failure process. The low interlaminar normal strength and wrinkle defects significantly reduce the compressive strength. The Puck criterion provides the most accurate prediction for matrix-dominant failure behavior, while Tsai-Wu 3D has the smallest error for delamination-dominant behavior.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Multidisciplinary
T. R. C. Chuaqui, A. T. Rhead, R. Butler, C. Scarth
Summary: A novel Bayesian optimisation framework is proposed for designing stronger stacking sequences in composite laminates, incorporating high-fidelity progressive damage finite element modelling and data-driven optimisation methodology. The framework efficiently establishes aerospace design guidelines by considering typical design constraints and ensuring good feasible solutions are found.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Mechanics
Weiwei Wang, Han Wang, Shaohua Fei, Huiyue Dong, Yinglin Ke
Summary: This paper proposes a new concurrent multiscale unit cell model to investigate the in-plane micro-damage evolution of Z-pinned composite laminates (ZCL). The research indicates that in-plane micro-damage initiates from the interface between Z-pin and matrix, with stress concentration and higher local fiber volume fraction playing a major role.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Composites
Jiao Lin, Chuanxiang Zheng, Yuchen Dai, Zhenyu Wang
Summary: In the failure analysis of composite materials, the debonding of interface is often overlooked. In this study, a model was established and micro mechanics of failure was applied to analyze fiber metal laminate (FML) under different loading angles. Results showed that directly using the stress on the matrix to calculate interface stress is inaccurate, and the damage trend of interface is consistent with that of fiber. The strain hardening phenomenon of FML decreases with larger loading angle, and the mechanical response is symmetric due to its structure symmetry.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2022)
Article
Mechanics
Qingping Sun, Guowei Zhou, Haibin Tang, Zhaoxu Meng, Mukesh Jain, Xuming Su, Weijian Han
Summary: This study conducted mull-scale finite element analyses based on 3D hybrid macro/micro-scale computational models to investigate the in-situ effect imposed by neighboring plies on the failure initiation and propagation of cross-ply laminates. The results showed good agreements between the computational models and analytical predictions, indicating high accuracy in quantifying the in-situ effect. Empirical formulas for in-situ strengths as a function of embedded ply thickness and different ply angle were developed, and new failure criteria accounting for the in-situ strengths were proposed to predict laminated composites failure under multi-axial stress states.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Chao Hang, Hao Cui, Huifang Liu, Tao Suo
Summary: This study presents a micro/meso-scale analysis framework to investigate the deformation and failure of a 2.5D woven composite under tensile loading. It predicts the elasticity and strength of fiber bundles, considering the effects of fiber undulation and in-situ factors. The research also explores the influence of shear coupling coefficient in the failure criterion on the mechanical response.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
S. L. J. Millen, Z. Ullah, B. G. Falzon
Summary: The finite element mesh aligned along the fibre direction is crucial in predicting damage accurately, especially in the presence of cracks. However, when matrix crack paths are not established a priori or may not be the dominant damage mode, fibre mesh alignment is unnecessary.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Sota Oshima, Aya Mamishin, Masaki Hojo, Masaaki Nishikawa, Naoki Matsuda, Manato Kanesaki
Summary: This study investigated the micromechanisms in carbon fiber reinforced plastics (CFRPs) through in situ mode II fracture toughness tests. The formation of damage zone and its correlation with the macroscopic behavior of CFRP laminates were observed and studied.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Engineering, Multidisciplinary
J. Sommer, M. Hajikazemi, I. De Baere, W. Van Paepegem
Summary: Quantifying microscopic damage mechanisms in opaque composite laminates with multiple off-axis plies throughout fatigue experiments is challenging. However, if successful, important relations between actual evolving damages and their contribution to the mechanical laminate response can be revealed. This study characterizes the evolution of matrix cracking in +/- 45 and 90 embedded off-axis plies together with effects of delamination and relates them to the global mechanical property reductions in Glass/Polypropylene laminates. The experimental results are compared with a modelling approach, showing good accordance.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Mechanics
Ke Yuan, Kai Liu, Zhonggang Wang, Kai Wei, Mingzhi Yang
Summary: This study investigates the influence of mass and dimension of rigid projectiles on the damage behaviors of carbon fiber reinforced plastic (CFRP) laminates. Experimental impact tests and numerical modeling are conducted, revealing that projectile dimension is related to penetration and delamination mode of CFRP, while projectile mass affects dynamic deformation.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Engineering, Multidisciplinary
Jiraphant Srisuriyachot, Jean Benezech, Guillaume Couegnat, Sophie A. M. McNair, Thomas Maierhofer, Richard Butler, Alexander J. G. Lunt
Summary: This paper presents the first study on in-situ pure compressive kink-band failure in Uni-Directional Carbon Fibre-Reinforced Polymer composites (UD-CFRPs) with a notch using synchrotron micro-Computed Tomography (micro-CT). The study compares the failure behavior of baseline samples with defect-rich samples containing micro-defects such as voids and fiber misalignment. The results reveal changes in fiber orientation and localized strain, and show that the defect-rich samples form narrower conjugate kink bands inclined at 45 degrees.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Mechanics
Ryoma Aoki, Ryo Higuchi, Tomohiro Yokozeki, Kazuyuki Aoki, Shigekazu Uchiyama, Toshio Ogasawara
Summary: The study focuses on the damage evolution of thin-ply composites and proposes a mechanics model that considers diffuse and discrete interply damage. Loading and unloading tests were conducted to evaluate the influence of ply thickness on damage evolution, resulting in formulated damage evolution laws dependent on ply thickness. The proposed model successfully captures the retardation and suppression effects of thin-ply, and accurately predicts stiffness degradation and failure strength of laminates with different ply thicknesses.
COMPOSITE STRUCTURES
(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)
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
Engineering, Multidisciplinary
Jia Ge, Giuseppe Catalanotti, Brian G. Falzon, John McClelland, Colm Higgins, Yan Jin, Dan Sun
Summary: This study investigates the hole making performance of thermoplastic carbon fibre/polyetherketoneketone (CF/PEKK) composite, comparing different methods (conventional drilling vs. helical milling) and feed rates. The research also reveals the effect of thermal-mechanical interaction on hole damage and utilizes advanced material characterization techniques to analyze material removal mechanisms and structural changes. Results show that delamination damage is influenced by machining temperature and thrust force, with helical milling generating higher temperatures and more severe microstructural damage compared to conventional drilling.
COMPOSITES PART B-ENGINEERING
(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
Polymer Science
Suhail Attar, Biqiong Chen, Gianluca Cicala, Giuseppe Catalanotti, Tommasso Scalici, Brian G. Falzon
Summary: This study demonstrates that the addition of high surface area graphene nanoplatelets and an impact modifier to neat nylon 6 can enhance and tailor the stiffness and toughness properties.
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
Materials Science, Composites
Aneesa Ishfaq, Sang N. Nguyen, Emile S. Greenhalgh, Milo S. P. Shaffer, Anthony R. J. Kucernak, Leif E. Asp, Dan Zenkert, Peter Linde
Summary: This study investigates the feasibility of implementing multifunctional structural power composites in a four-seater air taxi, which could significantly improve endurance and reduce weight. The current state-of-the-art structural power composites are approaching the performance requirements. Therefore, the adoption of structural power composites in the urban air mobility sector is considered promising, although several key challenges need to be addressed.
JOURNAL OF COMPOSITE MATERIALS
(2023)
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
Engineering, Manufacturing
Giuseppe Catalanotti
Summary: A methodology was developed and validated to quantify the uncertainty for advanced progressive damage models for composites. It relied on efficient emulators, state-of-the-art computational models, and bootstrapping statistic techniques to determine the distribution and associated statistics of structural strength based on a limited amount of virtual experiments.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Mechanics
Sahand Tabatabaei, Enrico Bedogni, Antonio R. Melro, Dmitry S. Ivanov, Stepan Lomov
Summary: This paper demonstrates the capability of mesh superposition based finite element models to predict the nonlinearity of composite stress-strain response under tensile and shear loading, induced by damage and matrix plasticity. A consistent elasto-plastic damage model is implemented for matrix damage simulation, while Puck's damage criterion and a continuous damage mechanics model are used for simulating intra-yarn damage initiation and propagation. The numerical simulations are validated by comparing with experimental results of a glass/epoxy laminate under tension and shear loading.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2022)
Article
Materials Science, Composites
M. Russello, G. Catalanotti, S. C. Hawkins, B. G. Falzon
Summary: This study used CNT web-based heating elements to resistance weld carbon fibre reinforced substrates. The electrothermal behavior of the CNT web was investigated experimentally, and optimal welding parameters were determined.
JOURNAL OF COMPOSITE MATERIALS
(2023)
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
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)
