Article
Polymer Science
Stanley Samlal, R. Santhanakrishnan
Summary: Sandwich composites are commonly used due to their bending stiffness, however, they have poor impact resistance. Understanding the impact properties of sandwich structures can determine their usage under impact conditions.
Article
Construction & Building Technology
Keramat Malekzadeh Fard, Meysam Mahmoudi
Summary: This paper investigates the energy absorption of lattice core sandwich structures with different configurations. The diamond lattice unit cell is used as the starting point and the sandwich structures with an expanded metal sheet as the core are tested under low-velocity impact loading. Through numerical simulations and experimental comparisons, it is found that the angle of cell orientation has the highest influence on specific energy absorption. The results suggest that the angle of cell orientation is the most influential parameter for increasing peak forces.
STEEL AND COMPOSITE STRUCTURES
(2023)
Article
Engineering, Marine
Yuqin Cheng, Kun Liu, Yao Li, Zili Wang, Jiaxia Wang
Summary: The dynamic response of U-type corrugated sandwich panels subjected to low-velocity impact was investigated through experimental and numerical analysis. The results showed that the deformation modes and performance were influenced by impact velocity and location. The experimental and simulation results were consistent, and the numerical simulation demonstrated reasonable accuracy. The transverse impact resistance performance was better than the longitudinal performance.
Article
Engineering, Civil
Yunwei Zhang, Leilei Yan, Chun Zhang, Shuxiang Guo
Summary: By filling the honeycomb holes with metallic tubes, the load carrying capacity and impact resistance of the honeycomb sandwich structure are improved, leading to a more uniform distribution of stresses and deformations. The tube-reinforced structure absorbs impact energy more quickly and significantly reduces front face-sheet deformation.
THIN-WALLED STRUCTURES
(2021)
Article
Mechanics
Mingling Wang, Zhongxiang Pan, Zhenyu Wu, Zhiping Ying
Summary: The ply structure significantly affects the impact resistance and failure behavior of composite laminates. Increasing the Kevlar hybrid ratio improves the impact absorption energy and ductility of the laminates. A Kevlar asymmetric-hybrid ratio of 25% is recommended for optimal peak strength and structural resilience.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
Karthik Ram Ramakrishnan, Sandra Guerard, Zhifang Zhang, Krishna Shankar, Philippe Viot
Summary: Sandwich composites with fiber-reinforced plastic facesheets and foam core are a major class of lightweight structural materials, but impact damage can severely reduce structural integrity. This study evaluated the impact behavior of sandwich panels with nano-reinforced epoxy matrix through numerical simulations and experimental tests, demonstrating accurate modeling and capturing impact damage behavior with nano-reinforcements.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Mechanics
Mingling Wang, Zhongxiang Pan, Zhiping Ying, Zhenyu Wu
Summary: The effect of intercalation sequence on the mechanical performance of carbon/Kevlar plain laminates was studied in this paper. It was found that symmetric intercalation structures have better load-bearing and resilience capacity compared with asymmetric structures. The impact damage volume of symmetric specimens was significantly smaller than that of asymmetric specimens according to quantitative micro-CT analysis.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Hangyu Lv, Shanshan Shi, Bingzhi Chen, Ziping Liu
Summary: This paper investigates the low-velocity impact performance of an orthogonal grid reinforced CFRP-foam sandwich structure at different positions. The intersection and rib positions showed fiber fracture, delamination, foam crushing, and cracking, while the center position exhibited face perforation and foam crushing. Numerical simulations were in good agreement with test results and discussed the damage processes at different stages. The lightweight, high impact resistant sandwich structure proposed provides a reference for structural design.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Mechanical
Hangyu Lv, Shanshan Shi, Bingzhi Chen, Jiaxin Ma, Zhi Sun
Summary: Grid structures have been added innovatively to honeycomb structures to form grid-honeycomb hybrid cores with great potential for engineering application. The impact response of composite sandwich structures with grid-honeycomb hybrid cores was investigated using experimental and numerical simulation. The results showed that the intersection had the highest impact resistance, with higher peak load, damage threshold load, and initial stiffness, and lower maximum displacement and residual displacement compared to the rib and center. Additionally, the grid thickness had a significant effect on impact resistance.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Engineering, Electrical & Electronic
Yuechen Duan, Zhiren Zhan, Ting Zou, Ying Tie, Zhen Cui, Tingting Wang
Summary: The low-velocity impact resistance of the double-layer V-shaped aluminium folded sandwich structure was studied using the finite element method. The results showed that the double-layer structure had better impact stiffness and energy-absorbing capacity compared to the single-layer structure at low-velocity impact. Two methods were proposed to improve the impact stiffness of the double-layer structure, both of which were effective in increasing the stiffness and reducing the impact distance of the structure.
Article
Chemistry, Applied
Muhammad Basha, A. Wagih, A. Melaibari, G. Lubineau, M. A. Eltaher
Summary: This article reviews the impact resistance and damage tolerance of fiber reinforced composites, and presents the research progress on low-velocity impact response of woven hybrid composites.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Engineering, Civil
Jianxun Zhang, Long Yuan, Jiangtao Zhang, Jun Yan, Hui Yuan
Summary: The dynamic response of a fully clamped foam-filled X-type sandwich beam under low-velocity impact is studied analytically and numerically. The analytical model based on the yield criterion is developed to predict the impact response. Numerical calculations are carried out and show good agreement with analytical results. The effects of various parameters on the impact resistance of the foam-filled X-type sandwich beam are discussed.
ENGINEERING STRUCTURES
(2023)
Article
Construction & Building Technology
Livia Avila de Oliveira, Maikson Luiz Passaia Tonatto, Gabriela Luiza Cota Coura, Rodrigo Teixeira Santos Freire, Tulio Hallak Panzera, Fabrizio Scarpa
Summary: This study describes the experimental and numerical behavior of sandwich panels made of aluminum skins and bamboo core under low-velocity impact test, and found that the variation of bamboo diameter has little effect on impact properties, while the type of adhesive can affect its stiffness and maximum load. Sandwich panels made with biopolymer adhesive can better absorb energy and maintain structural integrity.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Engineering, Mechanical
Arnob Banik, Chao Zhang, M. H. Khan, Matt Wilson, K. T. Tan
Summary: This study investigates the low-velocity impact response of ice impactor on steel and carbon fiber reinforced polymer sandwich composite. The findings show that the shape, length, and impact velocity of the ice impactors have an effect on the type and severity of damage in the composite material.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2022)
Article
Engineering, Civil
Jia-Bao Yan, Qingfeng Liu
Summary: This paper reported the experimental and analytical studies on the impact behaviors of steel-concrete-steel sandwich composite (SCSSC) walls using enhanced C-channels (ECs). The results showed that the ECs as direct-link connections provided strong resistance against local failure of the SCSSC walls, and the boundary CSFT columns increased their ultimate impact resistance.
THIN-WALLED STRUCTURES
(2023)
Article
Pharmacology & Pharmacy
V. Mazel, S. Guerard, B. Croquelois, J. B. Kopp, J. Girardot, H. Diarra, V. Busignies, P. Tchoreloff
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2016)
Article
Materials Science, Multidisciplinary
Hongxu Wang, Karthik Ram Ramakrishnan, Krishna Shankar
MATERIALS & DESIGN
(2016)
Article
Engineering, Manufacturing
Laurent Puech, Karthik Ram Ramakrishnan, Nicolas Le Moigne, Stephane Corn, Pierre R. Slangen, Anne Le Duc, Hassane Boudhani, Anne Bergeret
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2018)
Article
Materials Science, Characterization & Testing
Adrien Donnard, Sandra Guerard, Laurent Maheo, Philippe Viot, Gerard Rio
Article
Chemistry, Physical
Rama Kanta Layek, Karthik Ram Ramakrishnan, Essi Sarlin, Olli Orell, Mikko Kanerva, Jyrki Vuorinen, Mari Honkanen
JOURNAL OF MATERIALS CHEMISTRY A
(2018)
Article
Engineering, Multidisciplinary
Karthik Ram Ramakrishnan, Sandra Guerard, Laurent Maheo, Krishna Shankar, Philippe Viot
COMPOSITES PART B-ENGINEERING
(2019)
Article
Engineering, Mechanical
Karthik Ram Ramakrishnan, Sandra Guerard, Zhifang Zhang, Krishna Shankar, Philippe Viot
Summary: Sandwich composites with fiber-reinforced plastic facesheets and foam core are a major class of lightweight structural materials, but impact damage can severely reduce structural integrity. This study evaluated the impact behavior of sandwich panels with nano-reinforced epoxy matrix through numerical simulations and experimental tests, demonstrating accurate modeling and capturing impact damage behavior with nano-reinforcements.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2021)
Article
Engineering, Mechanical
Caizheng Wang, Krishna Shankar, Evgeny Morozov, Karthik Ram Ramakrishnan, Alan Fien
JOURNAL OF ENGINEERING MECHANICS
(2020)
Article
Materials Science, Composites
Karthik Ram Ramakrishnan, Essi Sarlin, Mikko Kanerva, Mikko Hokka
Summary: A multi-material design approach was proposed in this study for developing a novel hybrid structure by adhesively bonding a thin metal layer to NFC using commercial epoxy adhesive and natural rubber. The research showed that the joint bonded with epoxy adhesive was stronger than the one bonded with natural rubber, supported by the observation of adherend failure in the former and adhesive failure in the latter. The research highlights the feasibility of adhesively bonded NFC - metal hybrid structures.
COMPOSITES PART C: OPEN ACCESS
(2021)
Article
Sport Sciences
Karthik Ram Ramakrishnan, Hongxu Wang, Krishna Shankar, Alan Fien
SPORTS ENGINEERING
(2018)
Article
Dentistry, Oral Surgery & Medicine
Sandra Guerard, Jean-Luc Barou, Julien Petit, Philippe Poisson
DENTAL TRAUMATOLOGY
(2017)
Proceedings Paper
Engineering, Mechanical
Karthik Ram Ramakrishnan, Sandra Guerard, Laurent Maheo, Krishna Shankar, Philippe Viot
DYMAT 2015 - 11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING
(2015)
Proceedings Paper
Engineering, Mechanical
Laurent Maheo, Sandra Guerard, Gerard Rio, Adrien Donnard, Philippe Viot
DYMAT 2015 - 11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL AND PHYSICAL BEHAVIOUR OF MATERIALS UNDER DYNAMIC LOADING
(2015)
Proceedings Paper
Automation & Control Systems
Kevin Lestrade, Sandra Guerard, Patrick Lanusse, Philippe Viot
2015 IEEE CONFERENCE ON CONTROL AND APPLICATIONS (CCA 2015)
(2015)
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)
