Article
Engineering, Chemical
Nils Audry, Barthelemy Harthong, Didier Imbault
Summary: This study analyzes the effect of different types of boundary conditions on the simulated mechanical response of granular systems. The results suggest that the advantage brought by periodic boundary conditions is relatively limited compared to non-periodic boundary conditions.
Article
Materials Science, Composites
Mohammad Hosein Karimi Dona, Fathollah Tahri-behrooz, Bijan Mohammadi
Summary: The purpose of this study is to develop modified analytical models to accurately estimate the elastic modulus of a polymeric composite material containing nanoparticle fillers using micromechanical methods. The study revised Eshelby correlations and proposed improved models to estimate the elastic properties of the material, which were validated using experimental data.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Multidisciplinary
Hak Gu Lee, Jae-Sung Bae, Hui Yun Hwang
Summary: International standards require the normalization of fiber-dominated properties in composites, but not the normalization of matrix-dominated properties due to the lack of a clear model. This study developed a systematic approach based on periodic microstructure micromechanics (PMM) to normalize both types of properties, ensuring accuracy in design and analysis.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Composites
Komal Chawla, Benjamin Raju, Dakshayini B. Subbappa, Kishore Babu Kancherla, Debiprosad Roy Mahapatra
Summary: This paper discusses the impact of pore formation mechanism on the elastic properties of composite polymer matrix, proposes a micromechanical model considering different stages of pore formation, and validates the model through experimental measurements on polymer samples.
POLYMER COMPOSITES
(2021)
Article
Engineering, Multidisciplinary
N. Mentges, B. Dashtbozorg, S. M. Mirkhalaf
Summary: In this study, a micromechanics-based Artificial Neural Networks (ANN) model is developed to predict the elastic properties of short fiber reinforced composites accurately and quickly. The model uses a two-step approach, combining Finite Element Analysis and Orientation Averaging to create the required training and validation data, and its capability for fair predictions is proven by comparing to experimental results from literature.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Computer Science, Interdisciplinary Applications
Paul L. Barclay, Duan Z. Zhang
Summary: The gLE-PBC method allows for arbitrary deformations in MD simulations, maintaining a rectangular cuboid domain. It is validated against pure shear and shows good agreement with physical properties extracted from equilibrium MD simulations. The method is also capable of simulating three-dimensional shearing and deformations with a full velocity gradient matrix.
JOURNAL OF COMPUTATIONAL PHYSICS
(2021)
Article
Materials Science, Composites
Mohammad Hosein Karimi Dona, Fathollah Taheri-behrooz, Bijan Mohammadi
Summary: This study investigated the effects of intercalation and exfoliation of graphite flake particles on the mechanical properties of elastomeric composites. A new micromechanics model was proposed to estimate Young's modulus and develop a constitutive model for expanded graphite-filled elastomer. It was found that the actual volume fraction and ultimate aspect ratio of the dispersed particles significantly affected the mechanical properties of the composites.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2023)
Article
Mathematics
Cornel Marius Murea, Dan Tiba
Summary: The recent implicit parametrization theorem provides a general fixed domain approximation method in shape optimization problems. This article discusses the application of this method in topology and shape optimization, focusing on the challenging case of Neumann boundary conditions. An unexpected equivalence property with constrained optimal control problems, preserving differentiability, is presented. Experimental results demonstrate the applicability of this method in modifying topology.
JOURNAL OF DIFFERENTIAL EQUATIONS
(2022)
Review
Mathematics
Lufang Mi, Jing Li
Summary: This paper discusses the existence of many quasi-periodic solutions of the cubic nonlinear Schrodinger equation with given potential V (x) using an infinite dimensional KAM theorem dealing with multiple eigenvalues.
JOURNAL OF DIFFERENTIAL EQUATIONS
(2022)
Article
Computer Science, Interdisciplinary Applications
Matthew Dobson, Abdel Kader A. Geraldo
Summary: This paper presents rotating periodic boundary conditions (PBCs) for simulating uniaxial stretching flow (USF) or biaxial stretching flow (BSF) in nonequilibrium molecular dynamics (NEMD). Specialized PBCs are required for such nonequilibrium flows as the simulation box deforms with the background flow. The proposed technique is simpler than previous PBCs developed for general three dimensional flows and offers better minimum lattice spacing properties.
JOURNAL OF COMPUTATIONAL PHYSICS
(2023)
Article
Multidisciplinary Sciences
Florian Bruckner, Amil Ducevic, Paul Heistracher, Claas Abert, Dieter Suess
Summary: The presented methods eliminate shape anisotropy originating from the outer boundary while calculating the strayfield in micromagnetic simulations with true periodic boundary conditions. This is crucial when studying the influence of microstructure on the performance of composite materials. The applied differential formulation is perfectly suited for the application of true periodic boundary conditions and can be solved efficiently using the Fast Fourier Transform method.
SCIENTIFIC REPORTS
(2021)
Article
Computer Science, Interdisciplinary Applications
S. A. Gorbunov, A. E. Volkov, R. A. Voronkov
Summary: When analyzing the collective behavior of an atomic system modeled using molecular dynamics, the authors propose a method to determine the minimum size of a simulated cell without artificial effects caused by periodic boundary conditions (PBC). The method involves extracting a subcell with no artificial correlations and is demonstrated using calculations of the dynamic structure factor (DSF). Results show that DSFs of different materials are barely affected by artificial correlations when the simulation cell size reaches approximately 15000 atoms.
COMPUTER PHYSICS COMMUNICATIONS
(2022)
Article
Thermodynamics
Jiayi Zhao, Shuo Chen, Liming Zhu, Yang Liu
Summary: This paper investigates two types of thermal boundary conditions in the energy conservative dissipative particle dynamics method, focusing on improving thermal equilibrium and proposing a novel thermal Lees-Edwards (LE) boundary condition. The thermal LE allows for simulation of constant temperature and velocity gradients in a shear flow, providing a new way to study thermal-mechanical coupled problems with reduced computational cost and artificial fluctuations.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Engineering, Mechanical
Tian Xu, Murong Li, Zhen Wang, Yingda Hu, Shilun Du, Yong Lei
Summary: This paper proposes a novel inverse method to estimate the unknown elastic constants and boundary conditions of a three-dimensional hyperelastic material under locally observed boundary conditions with noise. The proposed method shows feasibility and accuracy in numerical and physical experiments.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Mathematics, Applied
Oktay Sh Mukhtarov, Kadriye Aydemir
Summary: The aim of this study is to generalize important spectral properties of classical periodic Sturm-Liouville problems to two-linked periodic problems with transmission conditions, discovering new problems with a finite number of real eigenvalues and proposing a new characteristic determinant definition and simple conditions on coefficients of transmission conditions.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(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
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
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
Multidisciplinary Sciences
B. Yu, T. J. Katafiasz, S. Nguyen, G. Allegri, J. Finlayson, E. S. Greenhalgh, S. T. Pinho, S. Pimenta
Summary: This study aims to quantify and model the statistical distribution of fibre pull-out lengths formed on the translaminar fracture surface of composites for the first time. X-ray computed tomography is used to measure the extent of fibre pull-out, and the relationship between pull-out length distributions, micromechanical properties, and the translaminar fracture toughness is established.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(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
Engineering, Multidisciplinary
Torquato Garulli, Tomas J. Katafiasz, Emile S. Greenhalgh, Silvestre T. Pinho
Summary: In this work, a bio-inspired microstructural concept is designed and manufactured to enhance the longitudinal compressive performance of multidirectional carbon fiber reinforced polymer (CFRP) laminates. Taking inspiration from layered materials found in nature, such as the anchoring spicula of the deep-sea glass sponge Monoraphis chuni, the authors created various design concepts and developed a strategy to reproduce the characteristic alternation of stiff and soft regions observed in the natural material. The proposed microstructure showed significant improvements in failure load and ligament specific stress at failure compared to a baseline laminate, suggesting its potential for lightweight structure design subjected to compression loading.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
M. Erfan Kazemi, Victor Medeau, Emile Greenhalgh, Paul Robinson, James Finlayson, Silvestre T. Pinho
Summary: This study proposes a novel design methodology using bio-inspired and interleaved layups to develop hybrid carbon fibre-reinforced polymer composite structures for improved high-velocity impact performance. The results show that the new design significantly improves energy dissipation and activates additional failure mechanisms compared to traditional layups.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Adam D. Whitehouse, Victor Medeau, Lorenzo Mencattelli, Bamber Blackman, Silvestre T. Pinho
Summary: This study develops a novel profiling concept to improve the mechanical performance of adhesive joints between metallic adherends and composite substrates. The experiments show that profiling the edge of the metallic adherend can increase the peak load by at least 27% and improve the stability of failure. Further experiments demonstrate that increasing the profile parameters can achieve significant mechanical performance gains. Acoustic emission monitoring data shows that profiling results in failure initiation occurring at higher loads, suggesting better stress distributions and lower peak stresses. Fracture surface analysis reveals that profiling deflects the translaminar fracture path and enhances damage tolerance through a debonding mechanism at the profile tips.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Composites
M. Erfan Kazemi, Victor Medeau, Lorenzo Mencattelli, Emile Greenhalgh, Paul Robinson, James Finlayson, Silvestre T. Pinho
Summary: We introduce novel zone-based hybrid laminate concepts to enhance the high-velocity impact (HVI) response of baseline carbon fibre-reinforced polymer (CFRP) composites. By keeping approximately 80% of the baseline CFRP mass in the hybrid concepts, similar areal weights and substantial in-plane mechanical properties are maintained. Three zones are identified along the laminate thickness, and tailored materials are incorporated to improve the HVI response. Various materials, including carbon (thin- and thick-plies), glass, Zylon, ultra-high molecular weight polyethylene (UHMWPE), shape memory alloy/carbon fabric, and ceramic, alumina, and titanium sheets, are studied. All laminate concepts have comparable areal weights for meaningful comparison. Experimental results demonstrate up to 95% improvement in energy dissipation compared to the baseline quasi-isotropic (QI) CFRP configuration.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Masahito Ueda, Yuki Suzuki, Silvestre T. Pinho
Summary: The analytical method for calculating the axial compressive stress-strain relationship of a unidirectional carbon fiber-reinforced plastic (UD CFRP) was presented, taking into account the variability of the fiber misalignment angle. It was found that the load-bearing capabilities of different fiber groups decreased significantly with greater misalignment angles. Fibers with a misalignment angle of 0.5 degrees showed a large load drop after reaching their maximum loading, leading to ultimate failure.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(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)