Article
Engineering, Manufacturing
M. E. Kazemi, M. Bodaghi, L. Shanmugam, M. Fotouhi, L. Yang, W. Zhang, J. Yang
Summary: The study investigates the low-velocity impact characteristics of a new generation of thermoplastic HTCLs at various energy levels, demonstrating excellent impact properties through the use of a novel liquid thermoplastic resin. Different fabric materials in the composite layers show varied performance, with the HTCL incorporating UHMWPE fabrics performing better in low-velocity impact.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Civil
Vaibhav Somaji Anuse, K. Shankar, R. Velmurugan, Sung Kyu Ha
Summary: This article presents a study on the LVI and CAI response of plain carbon fiber composite laminates, investigating the post-impact damage propagation in carbon/epoxy and glass/epoxy hybrid laminates under compression using experiments and numerical models. Low-velocity impact tests were conducted at different energy levels, followed by displacement-controlled compression tests. X-ray computed tomography was used to analyze the damage initiation and propagation. The results were validated using finite element models simulated with ABAQUS/explicit. The study also examined the impact of energy levels and stacking orientation on post-impact damage propagation by analyzing strain maps and stress-strain histories.
THIN-WALLED STRUCTURES
(2023)
Article
Materials Science, Composites
Muniyan Vijayan, Velappan Selladurai, Gurusamy Balaganesan, Ganesan Suganya Priyadharshini
Summary: In this research, nanosilica was added to fiber metal laminates (FML) to improve their interfacial bonding and mechanical strength. Various tests and analyses were conducted to examine the effects of nanosilica addition on the FML. The results showed significant improvements in strength and thermal stability with the addition of nanosilica.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Composites
Yang Hua, Fei Li, Ning Hu, Shao-Yun Fu
Summary: This study demonstrates that grafting graphene oxide (GO) coating onto glass fibers can greatly improve the frictional stability and reduce the friction coefficient parallel to the fiber alignment under low pressures in glass fiber reinforced polymer (GFRP) composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Textiles
Erfan Avazpoor, Amir Hossein Kazemian, Hossein Rahmani
Summary: This study investigates the influence of radius of curvature on glass fiber reinforced epoxy composites under low velocity impact conditions. Different curvature radii (10, 15, and 20 cm) and a flat sample with infinite curvature radius were used for fabricating laminated composite specimens. Impact tests were conducted at different energy levels, and various parameters including maximum force, absorbed energy, loading and unloading time, and damage area were evaluated. The results showed that the absorption of energy increases with decreasing curvature diameter, and the radius of curvature also affects peak load and loading and unloading times. Finite element simulations were performed using ABAQUS software, and the results were compared with experimental data.
FIBERS AND POLYMERS
(2023)
Article
Materials Science, Composites
Hui Liu, Peng Qu, Yunli Guo, Yong Zhou, Guoshun Wan, Yuxi Jia
Summary: Experimental and numerical investigations were conducted to study the low-velocity impact response of carbon fiber composite laminates toughened by nickel-coated carbon fiber (NiCF) veils. The results showed that inserting a layer of 34 g/m(2) NiCF veil in the midplane improved impact resistance, increased peak impact force, and reduced damage area. NiCF veils enhanced interlaminar properties, reducing energy absorption and impact damage in laminates. Laminates with higher areal density and more layers of NiCF veils exhibited better impact resistance.
POLYMER COMPOSITES
(2022)
Article
Materials Science, Composites
Ernesto Saenz, Marcos del Rio, Pablo Venegas
Summary: The challenge of incorporating carbon fiber and thermoplastic resin in wind turbine rotor-blades lies in their behavior during lightning events. A comparative study using lightning and dielectric strength tests was conducted, revealing that the behavior of the resins was similar. The integration of earth terminals in carbon fiber laminates was crucial for proper lightning discharge, and the fiber-to-fiber and fiber-to-terminal contact affected the electrical resistance of the laminates.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Characterization & Testing
Nurettin Furkan Dogan, Ozkan Ozbek, Ahmet Erklig
Summary: This study investigates the effects of adding graphene nanoplatelets (GnPs) to the epoxy matrix and the fiber stacking sequence on the mechanical and impact responses of carbon/aramid hybrid composites. The results show that the location of the aramid fiber has a significant impact on the performance of the hybrid composites. Adding 0.25 wt% GnPs to the epoxy matrix improves the low-velocity impact properties of pure glass and hybrid fiber-reinforced composites, but deteriorates the properties of aramid fiber-reinforced composites. The best improvement in mechanical properties is achieved by adding 0.1 and 0.25 wt% GnPs to the epoxy matrix.
Article
Agricultural Engineering
Selsabil Rokia Laraba, Amine Rezzoug, Rafik Halimi, Luo Wei, Yuhao Yang, Said Abdi, Yulin Li, Wei Jie
Summary: Alfa grass, an abundant and renewable natural fiber resource in North Africa, was utilized to prepare a sandwich panel. The resulting sandwich showed superior mechanical performance compared to other bio-based sandwiches, but had higher density. The hybridization of jute improved the rigidity of the skin, but decreased the tensile strength. The delamination at the interface between the core and skin, caused by the presence of metallic mesh, adversely affected the mechanical properties of the sandwich.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Materials Science, Composites
E. Mohamed Najeeb, M. Murugan
Summary: The study investigated the far-field pyroshock responses of carbon/glass/Kevlar-epoxy composite panels, showing that Kevlar-epoxy laminate has the highest vibrational energy absorption rate, while carbon-epoxy laminate accelerates the most. Glass-epoxy laminate falls in the intermediate category. Fiber types can be utilized in appropriate areas to minimize the effect of far-field pyroshock response based on their degree of acceleration.
POLYMER COMPOSITES
(2021)
Article
Engineering, Mechanical
M. L. J. Suman, S. M. Murigendrappa, Subhaschandra Kattimani
Summary: The study investigates the influence of similar and dissimilar interface layers on delamination in hybrid plain woven glass/carbon epoxy laminated composite. It is found that Valvo's mode partition method provides conservative results without the need for correction factors or curve fitting, offering a straightforward approach for evaluating fracture toughness based on composite material mechanics. The comparison of different interface layer configurations reveals that the insertion of carbon with glass enhances initial fracture toughness and stability, highlighting the importance of understanding crack propagation mechanisms in laminated composites.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2021)
Article
Engineering, Multidisciplinary
Uday Vaidya, Haibin Ning, Mark Janney, Mark Mauhar, Keith Graham, Martin Streckel
Summary: Engineered carbon fiber thermoplastics were used to develop a composite connecting rod with a design requirement of 14,000 N load and 1 mm maximum deflection. The optimization process included the use of carbon fiber poly ether ether ketone (C-PEEK) long fiber thermoplastics (LFT) injection over molded with carbon/polyphenylene sulfide (CPPS) and carbon/poly ether imide (C-PEI) tapes. The design was progressively optimized by increasing the wall thickness of the small end and width of the center section.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Mechanics
Muhammet Celik, Mustafa Guden, Mustafa Sarikaya, Alper Tasdemirci, Cem Genc, Kurtulus Ersoy, Ozgur Serin
Summary: The impact response of a composite sandwich structure with E-glass fiber reinforced epoxy/Nomex (R) honeycomb core was investigated experimentally and numerically. The results showed that the forces in low velocity impact and high velocity impact tests were higher than those in concentrated quasi-static indentation force tests, and increased with the impactor velocity. The increase in impact forces was mainly attributed to the inertia and strain rate sensitive fracture strength of the composite sheets. Core shearing was observed in all tests, and the deformation in high velocity impact tests above a certain velocity was highly localized with no core shearing but a large delamination damage area.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Akash Gupta, Manjeet Singh, J. S. Saini
Summary: This study assesses the impact of nano-silica on glass fiber-reinforced epoxy composite under static and fatigue loading. The addition of nano-silica improves the tensile and fatigue strength of the material. The damage patterns of the neat material include fiber breakage and matrix cracking, while the modified material also exhibits fiber pullout. During cyclic loading, the dynamic modulus decreases at high-stress levels and is lower at low-stress levels.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Composites
Mahmut Ozer, Halil Burak Kaybal
Summary: This paper investigates the dynamic loading behavior of nano reinforced glass/epoxy composite laminates under various impact energies. Halloysite nanotubes (HNTs) were introduced to enhance fiber-matrix interaction. The results show improved impact load carrying capacity and reduced energy absorption, as well as less damage on the front and back surfaces.
POLYMER COMPOSITES
(2022)
Article
Polymer Science
A. Manni, R. Matadi Boumbimba, A. Mikdam, A. El Bouari, F. Addiego, J. Meziani, M. Wary
Summary: The study demonstrates the potential use of dolomite and magnesite micro-particles to enhance the thermal properties of bio-based polyamide 11. It was found that magnesite has a stronger interaction with the PA11 matrix, leading to increased thermal stability, especially at low filler content.
Article
Materials Science, Multidisciplinary
Luis Alonso, D. Garcia-Gonzalez, Francisca Martinez-Hergueta, Carlos Navarro, Filipe Teixeira-Dias, Shirley K. Garcia-Castillo
Summary: A new theoretical energy-based model is proposed to predict the ballistic behavior of thin woven composite laminates, analyzing the influence of material properties and geometrical parameters on the ballistic response. The model is validated through finite element simulations and experimental results, highlighting the importance of in-plane energy-absorption mechanisms and the comparison between theoretical and FE models.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Review
Mechanics
Sergio Lucarini, Mokarram Hossain, Daniel Garcia-Gonzalez
Summary: Hard-magnetic soft composites, composed of magneto-active polymers and hard-magnetic particles, have seen significant advancements in recent years. The ability to control ferromagnetic patterns during manufacturing process has opened up new opportunities for designing smart components in biomedical engineering and soft robotics fields.
COMPOSITE STRUCTURES
(2022)
Article
Polymer Science
Kui Wang, Jiangyang Xiang, Jin Wang, Guoquan Xie, Yisen Liu, Yong Peng, Yanni Rao, Rodrigue Matadi Boumbimba
Summary: This study investigated the effects of printing directions and strain rates on the performance of short fiber reinforced polyamide-based composites. The results showed that printing directions significantly affected the compressive properties of the cylindrical specimens, with fiber orientation changing with deformation and resulting in stress reduction.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Instruments & Instrumentation
M. A. Moreno-Mateos, M. L. Lopez-Donaire, M. Hossain, D. Garcia-Gonzalez
Summary: Magnetorheological elastomers (MREs) can change their mechanical properties and shape in response to external magnetic stimuli. Recent studies have shown the potential of MREs with a soft matrix and soft-magnetic particles for significant mechanical stiffening. This paper presents an alternative solution using hard-magnetic MREs to achieve sustained stiffening responses without the need for a constant external magnetic field.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Miguel Angel Moreno-Mateos, Jorge Gonzalez-Rico, Emanuel Nunez-Sardinha, Clara Gomez-Cruz, Maria Luisa Lopez-Donaire, Sergio Lucarini, Angel Arias, Arrate Munoz-Barrutia, Diego Velasco, Daniel Garcia-Gonzalez
Summary: Biological cells and tissues are influenced by mechanical stress and strain from their surrounding substrate. A new experimental system using soft magneto-active polymers allows for controlled deformation of substrates, enabling the study of mechanobiological processes. The system has shown versatility in reproducing complex mechanical scenarios and transmitting physiologically relevant forces.
APPLIED MATERIALS TODAY
(2022)
Article
Polymer Science
Jiangyang Xiang, Yisen Liu, Jin Wang, Kui Wang, Yong Peng, Yanni Rao, Rodrigue Matadi Boumbimba
Summary: This study investigated the effects of heat-treatment and loading directions on the compressive properties of 3D printed continuous carbon fiber reinforced composites (CCFRC). The results showed that heat-treatment decreased the porosity and increased the compressive properties of the composites. Additionally, heat-treatment improved the yield strength when the fiber direction was parallel to the applied loading direction. Furthermore, heat-treatment also altered the failure modes of the composites.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Multidisciplinary
Daniel Garcia-Gonzalez, Tigran Ter-Yesayants, Miguel Angel Moreno-Mateos, Maria Luisa Lopez-Donaire
Summary: This study proposes a new concept of self-healing soft material that can heal after rupture without external actuation. By filling a sticky and soft elastomeric matrix with hard-magnetic particles, the material can close cracks when the ruptured parts are approached to each other. Experimental results show that the proposed soft materials can sustain mechanical loading beyond 20% strains after several fracture cycles without compromising the structural integrity.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Miguel Angel Moreno-Mateos, Mokarram Hossain, Paul Steinmann, Daniel Garcia-Gonzalez
Summary: Pre-existing flaws in highly stretchable elastomers can cause fractures under large deformations. This study shows that ultra-soft magnetorheological elastomers with remanent magnetization have 50% higher fracture toughness compared to non-pre-magnetized samples. The opening of cracks in pre-magnetized elastomers is delayed due to crack closure induced by the magnetic field. Numerical simulations also reveal that pre-magnetized elastomers have reduced stress concentration at the crack tip. This work reveals potential applications for functional actuators with improved fracture behavior and performance under cyclic loading.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Maria Luisa Lopez-Donaire, Gonzalo de Aranda-Izuzquiza, Sara Garzon-Hernandez, Javier Crespo-Miguel, Miguel Fernandez-de la Torre, Diego Velasco, Daniel Garcia-Gonzalez
Summary: Soft multifunctional materials with mechanical sensing or actuation in response to physical stimuli are important for bioengineering and soft electronics applications. However, manufacturing complex shapes with inks that change properties during printing remains a challenge. To address this, a hybrid theoretical-experimental framework using ink writing technology is proposed to optimize printability of time-dependent viscosity inks. The method eliminates the need for additives and is validated by printing magnetorheological elastomers and conductive soft materials.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Engineering, Multidisciplinary
Napo Bonfoh, Hafid Sabar
Summary: A new micromechanical approach based on the strain gradient elasticity theory is developed to predict the effective properties of composite materials by dealing with the problem of Eshelby's inhomogeneity. The method uses the Green's function technique to obtain an integral equation for the heterogeneous elastic problem. By utilizing this integral equation, the exact solution for Eshelby's inhomogeneity problem with spherical inhomogeneity and isotropic elastic behavior is determined. The effective elastic properties of a two-phase composite material are then predicted using Mori Tanaka's homogenization scheme through the expression of strain localization relations. The suggested approach is tested against reference models and experimental data to assess its relevance.
APPLIED MATHEMATICAL MODELLING
(2023)
Article
Mechanics
J. Crespo-Miguel, D. Garcia-Gonzalez, G. Robles, M. Hossain, J. M. Martinez-Tarifa, A. Arias
Summary: Conductive polymeric composites, filled with conductive particles, are used in material extrusion printers to provide electrical properties to insulating materials. However, the degradation of mechanical behavior during and after the application of electric currents remains unexplored. This study addresses these questions by characterizing a 3D printed conductive Polylactic Acid (PLA)/ Carbon Black (CB) composite through a range of electric fields and temperatures. The results show that the material's electrical conductivity and mechanical stiffness are enhanced when printed parallel to the electro-mechanical loading, but thermal effects due to Joule heating can lead to material degradation.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Ernesto Gonzalez-Saiz, Daniel Garcia-Gonzalez
Summary: Traditional methods for material modeling are often inaccurate for soft materials. In this study, a machine learning framework is proposed to automatically identify material parameters and the optimal kinematics and rheological model, which is applicable to any complex model. This work provides a new approach for studying the nonlinear responses of soft active materials.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Miguel Angel Moreno-Mateos, Kostas Danas, Daniel Garcia-Gonzalez
Summary: In this study, a magneto-mechanical framework is implemented to investigate the response of soft and hard magnetic MRE materials under different magnetic fields, revealing remarkable heterogeneities in computed local magnetostriction and magnetic fields depending on the magnetic setup used. A detailed discussion based on material and structural contributions provides a robust, rigorous, and necessary modeling route for future works.
MECHANICS OF MATERIALS
(2023)
Article
Chemistry, Physical
Javier Crespo-Miguel, Sergio Lucarini, Angel Arias, Daniel Garcia-Gonzalez
Summary: Additive manufacturing allows for the design of thermoplastic components with structural support, electrical conductivity, and heat generation modulated by mechanical deformation. However, the mechanisms and interplays governing material response at the microstructural level are still uncertain. In this study, we develop an experimental method to characterize conductive filaments from mechanical, electrical, and thermal perspectives, and propose a homogenization framework to analyze the microstructure. The framework considers viscoplasticity, electrical and thermal conduction, convection, heat generation through the Joule effect, and their interdependencies. After validation, the framework is applied to optimize fabrication requirements for desired properties in final products, such as stiffness, conductivity, and sensing capabilities of filaments.
NPJ COMPUTATIONAL MATERIALS
(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)
