Article
Polymer Science
Maciej Roszak, Dariusz Pyka, Miroslaw Bocian, Narcis Barsan, Egidijus Dragasius, Krzysztof Jamroziak
Summary: In this study, multi-layer fabrics commonly used in ballistics shields were tested and simulated. By adding additional materials and applying non-Newtonian fluids, the dynamic deflection of the samples was successfully reduced. The simulation results were very similar to the actual test results, and the use of a DCPD matrix resulted in a much lower deflection value compared to other materials, which is an innovation in the production of ballistics shields.
Article
Mechanics
Zhiyong Li, Yousong Xue, Baozhong Sun, Bohong Gu
Summary: This study investigated the penetration behavior of hybrid carbon/Kevlar/UHMWPE fiber laminated composites and revealed their complex failure mechanisms. Finite element modeling was used to predict the impact-induced damages for the hybrid composites. The results showed that the energy absorption capability of the hybrid laminates can be improved by 16.4%.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
Maciej Gloger, Zbigniew Stempien, Justyna Pinkos
Summary: One approach to improving soft body armor is to modify the structure of ballistic packages. This study examines the ballistic efficiency of packages with para-aramid embroidered structures and woven fabrics. The results show that hybrid packages with fabrics on the impact side and embroidered structures on the back are more efficient. Optimization suggests that the most effective package should have twice the number of woven layers as the penetrated layers.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Ceramics
Shibao Wu, Zhonghai Xu, Chunxing Hu, Xiaocan Zou, Xiaodong He
Summary: Aramid-carbon hybrid FRP laminates are widely used in the design of ceramic/FRP laminate composite armor systems due to their excellent mechanical properties. The stacking sequence of the aramid-carbon hybrid FRP laminate has been found to significantly impact the ballistic performance and structural integrity of the composite system. Specifically, when the carbon fiber is stacked at the top of the laminate and the proportion of carbon fiber remains constant, the ballistic performance and geometric integrity of the composite structure are optimized, providing an innovative approach to enhance the ballistic performance of ceramic/FRP laminate composite armor systems.
CERAMICS INTERNATIONAL
(2022)
Article
Mechanics
Qingsong Wei, Dan Yang, Bohong Gu, Baozhong Sun
Summary: This study investigates the ballistic mechanism of 3D woven fabric under Full Metal Jacket (FMJ) projectile impact, using numerical simulation and ballistic impact tests to validate and evaluate the finite element analysis (FEA) model. The results show a relatively good correlation between the FEA model and experimental tests, providing insights for the design of 3D woven fabric for ballistic protection.
COMPOSITE STRUCTURES
(2021)
Article
Multidisciplinary Sciences
Ananto Nugroho, Triastuti, Sandi Sufiandi, Anne Zulfia Syahrial
Summary: Densified wood technology was used to enhance the ballistic performance of laminated veneer armor material. The hybrid panel with a ratio of 2:1 of aramid fabric to densified veneer and fully configuring the aramid fabric on the inside showed the best ballistic energy absorption of 78.64% at 354.70 J.
Article
Materials Science, Multidisciplinary
Chao Zhang, Lingjie Min, Pibo Ma
Summary: This paper investigates the dynamic damage behavior of 3D angle-interlock woven fabric (3DAWF) under ballistic impact, and verifies the effectiveness of the proposed numerical model through comparison with experimental data. It is found that 3DAWF demonstrates different impact resistance with different projectile shapes, and the friction generated by projectile sliding plays a significant role in dissipating energy. Moreover, pre-stretching is found to enhance the ballistic limit and energy absorption of 3DAWF to a certain extent.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Chemistry, Physical
Pawel Zochowski, Marcin Bajkowski, Roman Grygoruk, Mariusz Magier, Wojciech Burian, Dariusz Pyka, Miroslaw Bocian, Krzysztof Jamroziak
Summary: This article presents an analysis of the effectiveness of numerical techniques in mapping the behavior of ballistic ceramics under projectile impact conditions. The hybrid method, which converts finite elements to SPH particles, was found to accurately reproduce the phenomenon of ballistic impact on ceramic/steel composite armor.
Article
Materials Science, Multidisciplinary
Payman S. Ahmed, Basim M. Fadhil, Samir Mshir, Mohamed Salar
Summary: Material selection plays a key role in impeding ballistic impact, while numerical simulations can reduce experimental time and material costs. Projectile geometry significantly influences ballistic behavior.
MULTIDISCIPLINE MODELING IN MATERIALS AND STRUCTURES
(2021)
Article
Mechanics
Yalun Dong, Lihong Yang, Ziqi Jin, Linzhi Wu
Summary: The ballistic impact response of fiber-reinforced composite/metal composite target under the impact of spherical projectile was studied by experimental and numerical methods. The effects of projectile impact velocity and target areal density on the target's ballistic impact response were analyzed. Results show that the target configuration with Kevlar composite front plate and steel back plate has better anti-penetration capability. Increasing the thickness of Kevlar front plate and reducing the thickness of steel back plate within a certain range can improve the anti-penetration capability of the FMCT target.
COMPOSITE STRUCTURES
(2022)
Article
Mechanics
Hang Zhou, Shengnan Min, Xiaogang Chen
Summary: This study explores the ballistic performance and mechanisms of para-aramid/epoxy composites with quasi-isotropic structures. The results show improved energy absorption, increased stress dissipation, and enlarged deformation areas, leading to better ballistic performance compared to orthotropic composites. The research fills the gap in understanding the application of quasi-isotropic woven composites for ballistic protections.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
Ugur Dogan, Emin Sunbuloglu
Summary: This study presents a novel analytical formulation for reducing the speed of bullet-type projectiles based on in-plane tensile failure energy absorption, including a new approach representing energy absorption due to friction. Limitation algorithms are developed for low-velocity impact cases, considering the drastic difference in energy absorption mechanisms compared to high-velocity impacts. The developed formulations are applied to real and virtual ballistic impact test cases, resulting in a satisfying correlation.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Polymer Science
Natalin Michele Meliande, Michelle Souza Oliveira, Mauricio Ferrapontoff Lemos, Artur Camposo Pereira, Andre Ben-Hur da Silva Figueiredo, Sergio Neves Monteiro, Lucio Fabio Cassiano Nascimento
Summary: Hybrid composites have extensive applications in advanced technology industries, and this study investigated the thermal behavior of a hybrid laminated composite made of synthetic Twaron(& REG;) fabric and natural curaua non-woven mat. The results showed that the hybrid laminated composites exhibited multiple inflections in terms of mass loss, with one sample showing thermal expansion. Overall, there was an increasing thermal stability behavior in the temperature interval related to the composites' glass transition temperature.
Article
Materials Science, Multidisciplinary
Natalin Michele Meliande, Michelle Souza Oliveira, Artur Camposo Pereira, Filipe D'Mengeon Pedreiro Balbino, Andre Ben Hur da Silva Figueiredo, Sergio Neves Monteiro, Lucio Fabio Cassiano Nascimento
Summary: This research aimed to develop laminated hybrid-composites using aramid woven fabric and curaua non-woven mat for military ballistic helmets. The study found that composites with one layer of curaua and 15 layers of aramid achieved the highest level of ballistic protection. The positioning of the curaua non-woven mat behind the aramid woven fabric, as well as the lower total number of layers, reduced the ballistic resistance of the hybrid composites.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Polymer Science
Natalin Michele Meliande, Pedro Henrique Poubel Mendonca da Silveira, Sergio Neves Monteiro, Lucio Fabio Cassiano Nascimento
Summary: This study investigates the use of a hybrid material consisting of synthetic aramid and natural lignocellulosic fiber for ballistic helmets. The replacement of aramid with curaua in the laminate composite materials results in a decrease in tensile strength and toughness, but improves rupture deformation. Reduction Maps analysis shows that the hybridization is advantageous when replacing nine or more aramid layers.
Article
Biotechnology & Applied Microbiology
Andrey P. Acosta, Rene H. Diaz, Sandro C. Amico, Rafael Beltrame, Kelvin T. Barbosa, Rafael A. Delucis, Darci A. Gatto
Summary: The objective of this study was to evaluate a two-step Pinus elliottii modification process using thermal treatment followed by vacuum-pressure treatment and polymerization with PMMA solution. The results showed that thermal modification improved the thermal stability of pine wood, and post-treatment with PMMA recovered the losses in stiffness and strength caused by thermal modification.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2023)
Article
Polymer Science
Joziel A. Cruz, Sandro C. Amico, Otavio Bianchi
Summary: This study focuses on the effect of aramid pulp (1 wt.%) on the equilibrium swelling, enthalpy reaction, solid viscoelastic properties, and rheokinetics of castor oil and polyether polyol blend with polymeric isocyanate. Aramid pulp increases the crosslink density and slightly restricts the swollen volume, but does not change the reaction mechanism. It also improves the orderliness of the PU structure.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Mechanics
Mohammad Rezasefat, Dayou Ma, Amanda A. X. da Silva, Chiara Colombo, Sandro C. Amico, Marco Giglio, Andrea Manes
Summary: This paper investigates the performance of asymmetric inter-ply hybrids of plain-weave aramid and satin-weave S2-glass fabrics/epoxy laminates subjected to low-velocity impact. A multi-criteria decision-making analysis and numerical simulation were conducted to determine the best laminate design, considering factors such as fibre ratios, impact sides, and impact energies. The results show that hybrid laminates with aramid on the impact side perform the best.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Bilal Ghafoor, Umar Farooq, Henri Stephan Schrekker, Sandro Campos Amico
Summary: Hybrid composite laminates with enhanced properties were prepared by non-covalently modifying multiwall carbon nanotubes with an ionic liquid. The laminate containing 1 wt% of modified carbon nanotubes exhibited the best mechanical and thermomechanical properties.
JOURNAL OF COMPOSITE MATERIALS
(2023)
Article
Materials Science, Composites
Cristiano B. Azevedo, Jose Humberto S. Almeida Jr, Tales Lisboa, Leonardo G. Scherer, Axel Spickenheuer, Sandro C. Amico
Summary: This paper introduces a novel hybrid manufacturing process that combines filament winding (FW) and tailored fiber placement (TFP). The main idea is to place a TFP patch in between two filament wound layers aiming at maximizing the load transfer between the parts. The feasibility of the process is evaluated by assessing physical properties, such as density, fiber volume fraction and void content, as well as the hybrid process kinematics and error propagation. Furthermore, axial compression tests considering several unidirectional TFP patches are carried out to determine the mechanical performance of this novel procedure. Key results show low-void content and good cross-section quality, demonstrating the feasibility of the process. In addition, mass-normalized load peaks as high as 394% with respect to the reference (non-patched) cylinder were obtained.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Engineering, Civil
Mohammad Rezasefat, Amanda A. X. da Silva, Sandro C. Amico, Marco Giglio, Andrea Manes
Summary: This paper presents an experimental study on the repeated low-velocity impact behavior of inter-ply hybrid composites. The impacts were performed using a drop-tower apparatus following ASTM D7136 Standard. A double exponential empirical model is proposed to describe the degradation due to the repeated impacts, considering the hybridization ratio. The results show that hybridization may lead to the mitigation of repeated impact degradation, with asymmetric hybrids outperforming single-fiber laminates.
THIN-WALLED STRUCTURES
(2023)
Article
Materials Science, Textiles
Andre Flores, Amanda Albertin, Rafael de Avila Delucis, Sandro Campos Amico
Summary: The physical and mechanical performance of natural fiber composites can be adjusted by combining them with synthetic fibers. Jute fibers are cost-effective and readily available in some countries, and their usage also benefits socially marginalized individuals who rely on this plant. This study examines the impact of hybridization on the properties of jute/glass and jute/carbon laminates with polyester resin. Various laminates were created using unidirectional jute, E-glass, and carbon fabric reinforcements through vacuum infusion. Tensile, flexural, and short beam tests were conducted according to ASTM standards. The hybrid composites generally exhibited intermediate properties compared to the non-hybrid laminates comprising only two components. The mechanical properties of the hybrid composites were 50-75% lower than those of the pure glass and carbon composites, but 30-300% higher than the pure jute composite. The number of synthetic fiber layers in the hybrid laminates played a more significant role in determining the properties rather than the arrangement. Varying the number of jute fabrics allowed for the desired combination of stiffness and strength for different applications. Moreover, hybrid laminates with more synthetic fiber layers exhibited superior hygroscopic performance.
JOURNAL OF NATURAL FIBERS
(2023)
Article
Polymer Science
Andrey Pereira Acosta, Agne Kairyte, Sylwia Czlonka, Karolina Miedzinska, Arthur Behenck Aramburu, Kelvin Techera Barbosa, Sandro Campos Amico, Rafael de Avila Delucis
Summary: This study presents the development of rigid polyurethane foams filled with pine seed shells and yerba mate. Yerba mate showed good compatibility with the polyurethane system, resulting in increased mechanical and thermal properties. However, pine seed shell did not appear to be compatible and led to a decrease in mechanical properties.
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)
Article
Construction & Building Technology
Andrey Pereira Acosta, Rafael de Avila Delucis, Sandro Campos Amico
Summary: This study proposes a method to overcome the limitations of unidirectional wood-jute laminates by manufacturing wood-glass and wood-jute-glass laminates using vacuum infusion processing. The results show that increasing the number of glass layers leads to higher apparent density, thinner laminates, and closer longitudinal and transverse mechanical properties. Additionally, the wood-glass interface bonding is stronger compared to the wood-jute interface bonding.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Mechanical
Dayou Ma, Christian Matheus dos Santos Cougo, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: A stochastic numerical method based on finite element modeling is proposed in this study to simulate the inhomogeneous distribution of nanoparticles in nanoparticle-reinforced composites. The method was validated through low-velocity impact tests and proved to accurately predict the mechanical response and damage phenomena.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Dayou Ma, Mohammad Rezasefat, Joziel Aparecido da Cruz, Sandro Campos Amico, Marco Giglio, Andrea Manes
Summary: The matrix has a significant effect on the impact resistance of composite materials. Replacing a brittle polymer with a more flexible one can improve impact resistance, but it poses challenges to standard testing methods. This study designs a new fixture for testing the low-velocity impact of soft composites and investigates the effect of the fixture on the mechanical performance.
Article
Engineering, Civil
Eduardo A. W. de Menezes, Tales Lisboa, Jose Humberto S. Almeida Jr, Axel Spickenheuer, Sandro C. Amico, Rogerio J. Marczak
Summary: This paper aims to unlock and understand how the winding pattern influences the mechanical behavior of filament wound cylinders under different boundary conditions. Finite element models and an original geometric approach are developed to generate the pattern. Results show that the impact of the winding pattern on the mechanical behavior decreases with an increased number of layers stacked to the cylinder.
THIN-WALLED STRUCTURES
(2023)
Article
Chemistry, Physical
Andrey Pereira Acosta, Bruno Esteves, Joziel Aparecido da Cruz, Arthur Behenck Aramburu, Agne Kairyte, Sylwia Czlonka, Dionatan Orestes Ramos, Matheus de Paula Goularte, Rafael de Avila Delucis, Darci Alberto Gatto, Sandro Campos Amico
Summary: This study aims to develop sustainable poly(furfuryl alcohol)/wood veneer prepregs and laminate composites. The prepregs and laminates were manufactured using vacuum infusion and compression molding processes, and their properties were evaluated. The results demonstrate that the produced composites have a long shelf life, excellent hydrolysis resistance, and superior mechanical properties.
Article
Polymer Science
Alessandro Vescovini, Luca Lomazzi, Marco Giglio, Andrea Manes
Summary: This study evaluates the damage to a carbon-fiber-reinforced polymer plate under blast loading using numerical methods. The results show that the hybrid approach is the most promising in terms of efficiency and accuracy, while the Lagrangian approach accurately reproduces the experimental observations despite its limitations.
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)