Article
Engineering, Aerospace
A. ChaoCorreas, H. Ghasemnejad
Summary: The study aims to provide analytical modeling techniques for describing the dynamic response of sandwich laminated structures under low velocity impact. Through analysis and experimental validation, precise analytical formulas have been developed to accurately capture the energy absorption mechanisms under different loading conditions.
AEROSPACE SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Ali Farokhi Nejad, Seyed Saeid Rahimian Koloor, Syed Mohd Saiful Azwan Syed Hamzah, Mohd Yazid Yahya
Summary: This study focuses on the mechanical behaviour of through-thickness polymer, pin-reinforced foam core sandwich panels subjected to indentation and low impact loading. Results show that using polymeric pins significantly increases the flexural strength of the panel under impact loading and raises the impact resistance of the pin-reinforced foam core panel. The size of pins has a significant influence on flexural behavior while the sample is under a moderate strain rate.
Article
Mechanics
Rajendra Prasad Bohara, Steven Linforth, Tuan Nguyen, Abdallah Ghazlan, Tuan Ngo
Summary: This paper introduces a protective sandwich structure with dual-mechanism auxetic compression and tension behavior and evaluates its protective performance through numerical simulations. The results show that the sandwich structure has excellent performance in terms of energy absorption, stress mitigation, and deflection control, and offers better protection compared to an equivalent solid structure.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Civil
Yonghui Wang, Jingyi Lu, Suntao Liu, Ximei Zhai, Xudong Zhi, Jia-Bao Yan
Summary: The study focused on a novel stiffener-enhanced steel-concrete-steel sandwich beam for impact resistance, showing that stiffeners in the tension plate significantly improved impact resistance. The established Finite Element model and analytical model accurately predicted the displacement response of the beam under impact loading.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Civil
Lin Jing, Kai Liu, Xingya Su, Xin Guo
Summary: Experimental and numerical studies on the blast response of clamped sandwich panels with layered-gradient aluminium foam cores showed that all layered-gradient core sandwich panels have weaker blast resistance capability compared to ungraded sandwich panels due to reduced structural integrity. For a given effective impulse, the specific energy absorption value of positive gradient sandwich panels is the largest, followed by ungraded sandwich panels, with negative gradient sandwich panels being the lowest.
THIN-WALLED STRUCTURES
(2021)
Article
Mechanics
Xue Li, Rui Kang, Cong Li, Zhiyang Zhang, Zhenyu Zhao, Tian Jian Lu
Summary: In order to minimize the fatal threats of fully confined blasts to surface battleships, ultralight all-metallic sandwich panels with square honeycomb cores are proposed as an alternative to traditional metallic plates for ship construction. A combined experimental and numerical approach is used to investigate the dynamic responses of the sandwich panels under blast loading and compare its blast resistance to that of the monolithic counterpart. Finite element simulations with the CEL approach are performed to explore the physical mechanisms. The results show that the proposed sandwich panel exhibits significantly higher blast resistance due to its consumption of impact energy through various deformation modes.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Marine
Hong Lin, Chang Han, Lei Yang, Lin Zhang, Haochen Luan, Pingping Han, Hao Xu, Shuo Zhang
Summary: This research provides a quantitative optimization scheme for offshore sandwich blast walls with different honeycomb cores, and analyzes the dynamic performance of these walls through numerical simulation. It is found that the sandwich plate with concave arc honeycomb core has the best anti-blast performance, and the influence of geometric parameters on its blast-resistance performance is evaluated.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Mechanical
Shivdayal Patel, Murlidhar Patel
Summary: A novel hybrid composite honeycomb sandwich structure and metallic honeycomb sandwich structure were developed to consider blast loading. Finite element analysis and progressive damage modeling showed that the hybrid composite honeycomb sandwich structure had better blast resistance than the metallic honeycomb sandwich structure.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2022)
Article
Mechanics
Ying Li, Xianben Ren, Xiaoqiang Zhang, Yanfei Chen, Tian Zhao, Daining Fang
Summary: The study investigated the deformation and failure modes of aluminum foam-cored sandwich plates through air-blast experiments and finite element modeling, revealing different failure modes and internal stress distributions under various impacts. The research provided a theoretical basis for engineering design by establishing mathematical models to verify the findings.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
Benjamin Stavnar Elveli, Ole Vestrum, Knut Ove Hauge, Torodd Berstad, Tore Borvik, Vegard Aune
Summary: This study evaluates the effect of complex, partially confined detonations on thin steel plates with realistic pre-formed defects. It is found that target plates with pre-cut circular holes show better fracture resistance under blast loading compared to plates with initial ballistic impact.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Construction & Building Technology
Yunfei Deng, Rui Tian, Ang Hu, Huapeng Wu, Nan Zhou, Gang Wei
Summary: This paper investigates the impact resistance of S-shaped glass fiber composite foldcore sandwich structures and explores the influence of face sheet thickness and core thickness on the impact resistance of the sandwich structure.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Thermodynamics
Ngoc-Tu Do, Pham Binh Le, Trung Thanh Tran, Quoc Hoa Pham
Summary: The main goal of this paper is to analyze the nonlinear transient behavior of FGSS shells subjected to blast loading in a thermal environment using the MITC4 based on FSDT. The proposed method provides results that are in good agreement with those in existing literature, and a thorough investigation into the nonlinear transient behavior of FGSS shells is conducted.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Engineering, Civil
Firat Tuzgel, Emine Fulya Akbulut, Erkan Guzel, Atacan Yucesoy, Selim Sahin, Alper Tasdemirci, Mustafa Guden
Summary: The blast loading response of a sandwich structure with bio-inspired cores/units was investigated. The study analyzed the dynamic crushing behavior and specific energy absorption capacity of the structure. The all-front configuration was found to be the most efficient in terms of energy absorption.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Mechanical
Tianhui Zhang, Zhifang Liu, Shiqiang Li, Jianyin Lei, Zhihua Wang
Summary: In this study, the dynamic response and energy absorption properties of an aluminum foam-filled sandwich circular tube under internal blast loading were investigated through experimental, theoretical, and numerical simulations. Different masses of spherical emulsion explosives were used in a series of blast experiments, revealing three axially deformed regions in the internal and external tubes. A theoretical explicit calculation method was developed to predict the internal blast response, while a 3D Voronoi algorithm-based FE model was developed to study the deformation mechanism. Both numerical and experimental results were consistent with the theoretical predictions. Additionally, the impact of various factors on the dynamic response and energy absorption properties was investigated, with the sandwich circular tube with negative gradient core showing the best anti-blasting performance among the gradient arrangement tubes.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Engineering, Marine
Tian Ali, Yao Peng, Zou Jinhao, Liu Kun, Ye Renchuan
Summary: A composite sandwich plate structure (SPS) is designed to improve the crashworthiness of ships. A three-stage optimization method is proposed to reduce the number of collision simulations and improve the efficiency of crashworthiness optimization. The results allow for the determination of the structure with the best crashworthiness.
Article
Engineering, Civil
Jianjun Zhang, Dora Karagiozova, Guoxing Lu, Pengwan Chen
Summary: This work investigates the large, plastic deformation and energy absorption characteristics of zig-zag folded metamaterials BCHn under quasi-static compression, using analytical and numerical methods. The zig-zag folded materials outperform Miura-ori based materials in energy absorption, and their tunable geometric parameters allow better tailoring of mechanical properties. Comparisons with hexagonal honeycomb materials show that selecting parameters of the BCHn materials can result in superior energy absorption characteristics.
THIN-WALLED STRUCTURES
(2021)
Article
Engineering, Mechanical
R. J. Curry, G. S. Langdon
Summary: This paper presents new insights into the critical influence of explosive charge backing on the impulse transfer and transient response characteristics of plates subjected to close-proximity air blast loading. The increase in impulse transfer caused by metal backing was found to be 3-5 times larger than for air backing, indicating the significant impact of charge backing on blast protection engineering.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Muhammad Y. Oomar, Arnaud G. Malan, Roy A. D. Horwitz, Bevan W. S. Jones, Genevieve S. Langdon
Summary: This paper introduces an all-Mach method for two-phase inviscid flow with surface tension effects, combining a modified HLLC solver with the CICSAM VoF method to achieve shock capturing and accurate interface tracking characteristics. Reconstruction of non-conservative variables is used for robustness and accuracy, with liquid-gas interface curvature computed through height functions and convolution. Validation using various test cases shows agreement with previous experimental and numerical work, particularly demonstrating improved accuracy in volume fraction and energy fields with the HLLC-VoF combination.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Biomedical
J. W. Denny, A. S. Dickinson, G. S. Langdon
Summary: This paper evaluates existing PBI criteria and provides ideal blast wave parameters for blast injury research and clinical practice. Simulating realistic and injury-specific blast conditions can support blast injury research, emergency response, and hazard preparedness.
MEDICAL ENGINEERING & PHYSICS
(2021)
Review
Medicine, General & Internal
J. W. Denny, A. S. Dickinson, G. S. Langdon
Summary: This study focuses on the direct impact of primary blast injuries (PBIs) on the human body, specifically on organs containing air. It provides predictive criteria and parameters for generating clinically relevant loading conditions. The study also proposes guidelines for blast wave parameters and phase durations to ensure realistic and practical experimental setups. These findings can inform the design of PBI experimental investigations.
BMJ MILITARY HEALTH
(2023)
Article
Mechanics
G. S. Langdon, S. Gabriel, C. J. von Klemperer, S. Chung Kim Yuen
Summary: This study investigates the response and failure of MDF panels subjected to air-blast loading, providing unique insights into the cracking and fragmentation of MDF. The experimental results show that blast-loaded MDF panels exhibit multiple surface cracks, substantial in-plane cracking, and reduced stiffness due to internal damage caused by cracking. The findings from this study can be valuable for blast protection engineers and modellers simulating damage from explosive events involving MDF furnishings.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
D. Karagiozova, M. Alves
Summary: The study examines the saturated impulse phenomenon in a circular hollow beam under rectangular pressure pulse loading, developing a simplified 2DoF model to analyze the effects of local and global deformations on the beam response. Elastic deformations of the hollow beam are neglected in the analytical formulation, and a rigid-plastic analysis method is used along with finite element simulations to verify the model and investigate the influence of elasticity on the beam response. The study suggests that the analytically predicted saturated impulse can serve as a lower bound estimate for a given beam geometry's saturated impulse, while also highlighting the underestimated saturated pressure pulse duration due to the disregard of stored elastic energy in the beam.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2021)
Article
Chemistry, Physical
Sherlyn Gabriel, Christopher J. von Klemperer, Steeve Chung Kim Yuen, Genevieve S. Langdon
Summary: This study investigates the blast response of sandwich panels with lightweight foam cores and asymmetric glass fibre epoxy face sheets, revealing different failure modes between thinner and thicker facesheets. Residual oscillations in the sandwich panels are larger, and the material composition and testing conditions influence the observed failure modes.
Article
Chemistry, Multidisciplinary
Genevieve S. Langdon, Ruixuan Qi, Trevor J. Cloete, Steeve Chung Kim Yuen
Summary: This paper investigates the influence of ball size on the flight characteristics and damage of a ball bearing embedded in a rear detonated cylindrical charge. The findings provide valuable insights for blast protection engineers considering the effects of embedded projectiles in improvised explosive devices.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Composites
Sherlyn Gabriel, Genevieve S. Langdon, Christopher J. von Klemperer, Steeve Chung Kim Yuen
Summary: This paper evaluates the susceptibility to damage of sustainable natural fibers and bio-based resins in fiber reinforced polymers (FRPs) under explosive detonation. Flax and jute FRP panels were blast tested and compared to glass FRP panels of equivalent mass. The results show the importance of fiber strength and stiffness, and the lesser influence of resin system. A modified non-dimensional analysis approach is proposed for predicting the peak displacement of FRPs during blast events.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2022)
Article
Mechanics
M. Alteneiji, K. Krishnan, Z. W. Guan, W. J. Cantwell, Y. Zhao, G. Langdon
Summary: This paper presents experimental and numerical studies on the dynamic behavior of aluminium matrix syntactic foams. The compressive crush behavior of the material is found to be strain-rate sensitive. The behavior under high strain-rate loadings and the underlying failure mechanisms are analyzed to evaluate the effective mechanical performance. The numerical model is verified and the predictions are in good agreement with the experimental results.
COMPOSITE STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Sherlyn Gabriel, Jack Denny, Steeve Chung Kim Yuen, Genevieve S. Langdon, Reuben A. Govender
Summary: Explosions in urban areas have a significant negative impact, and it is important to understand the loading effects caused by blast interactions with structures. This study aimed to determine the scaling effects on blast wave parameters in reduced-scale urban blast scenario experiments. The results showed that scaling between 75% and 100% worked well for positions shielded by a corner wall. Furthermore, comparison with larger-scale field trials revealed sensitivity to various factors.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Civil
Bin Xu, Cheng Wang, Steeve Chung Kim Yuen
Summary: The research introduces a new configuration of thin-walled nested tube structure as an energy absorber subjected to lateral compression, with experiments and numerical simulations showing good energy absorption characteristics in the four-tubes nested systems. The validated model was used to investigate the effectiveness of the nested system under different boundary conditions, including rotation and impact at different angles.
LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES
(2021)
Article
Materials Science, Composites
Xi Liu, Wei Shen, Jincun Fu, Toshiaki Natsuki, Lvtao Zhu
Summary: The 3-D carbon fiber reinforced resin matrix composite tubes were designed and formed using a novel braiding-winding-pultrusion processing technique. The effects of temperature environments on the mechanical responses and damage behaviors of the composite tubes were investigated, and it was found that the structural design of the tubes directly affects their axial bearing capacity.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Weihao Yuan, Ziyang Zhang, Yueshan Li, Yudong Huang, Zhengxiang Zhong, Zhen Hu
Summary: In this study, the simultaneous self-healing of matrix and interface damage of fiber-reinforced composites was achieved by integrating extrinsic self-healing based on microcapsules and internal self-healing based on coordination interaction. The high exothermic action of epoxy resin and mercaptan repair agent in the self-healing process was observed using infrared thermal imaging technology for in-situ and real-time damage detection.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Israr Ud Din, Adnan Ahmed, Farah Tarek, Wesley Cantwell, Kamran A. Khan
Summary: In this study, a finite element model driven by XCT was developed to simulate the folding characteristics of origami structures, and the results showed good agreement with experimental data. The study demonstrates the potential application of XCT-driven FE modeling in simulating foldable structures.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Yishan Yang, Yukang Lai, Song Zhao, Hongguang Chen, Renshu Li, Yongjiang Wang
Summary: This study reports the synthesis of a new transparent fiber reinforced polymer material (tGFRP) with high transparency and superior mechanical properties by controlling the refractive index of epoxy resin and using a novel processing technique.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Yuhang Liu, Kai Huang, Junfeng Ding, Shangyang Yu, Zhixing Li, Li Zhang, Licheng Guo
Summary: This study proposes a method for accurately predicting the penetration failure load of composites using acoustic emission (AE) data. The method includes a cyclic loading test schedule and an extrapolation method based on uncertainty. The results show that this method can accurately predict the failure load when LR equals 1.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Jinxia Cai, Bing Xie, Yunliang Jiang, Jinshan Lu, Zeyu Li, Pu Mao, Mohsin Ali Marwat, Haibo Zhang
Summary: This research aims to develop ternary nanocomposites composed of polycarbonate, Al2O3 nanoparticles, and BaTiO3 nanowires for capacitive energy-storage. By optimizing the capacitor materials, the discharge energy density and efficiency have been improved, and the superiority of the ternary polymer nanocomposites for dielectric energy-storage has been validated through finite element analysis.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Hon Lam Cheung, Mohsen Mirkhalaf
Summary: The aim of this study is to develop physics-based models and establish a structure-property relationship for short fiber composites. High-fidelity full-field simulations are computationally expensive and time-consuming, so the use of artificial neural networks and transfer learning technique is proposed to solve this issue and improve modeling accuracy and efficiency.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Yue Jiang, Juyoung Leem, Ashley M. Robinson, Shuai Wu, Andy H. Huynh, Dongwon Ka, Ruike Renee Zhao, Yan Xia, Xiaolin Zheng
Summary: The effect of interface engineering on the combustion and mechanical performance of high-loading B/HTPB composites was investigated in this study. It was found that both covalently bonded and nonpolar/nonpolar interfaces effectively reduced the aggregation of B particles, promoting combustion efficiency and burning rate, and enhancing the mechanical properties of the composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
R. Mohsenzadeh, B. H. Soudmand, A. H. Najafi, M. Fattahi, D. P. Uyen
Summary: This study examines the morphological features of nano-zeolite nanoparticles incorporated into ultra-high molecular weight polyethylene nanocomposites. The dispersion of nanoparticles within the polymer matrix was improved following nano-zeolite incorporation. The size and distribution of nanoparticles were determined through tailored histograms, and the effective elastic moduli of nanocomposites were calculated, considering interfacial effects.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Chunming Ji, Jiqiang Hu, Rene Alderliesten, Jinchuan Yang, Zhengong Zhou, Yuguo Sun, Bing Wang
Summary: This paper investigates the effect of impact damage on the fatigue behavior of CF/PEEK-titanium hybrid laminates. A fatigue life model is proposed to predict the S-N curves of the laminates based on energy dissipation approach. The energy dissipation behavior of the laminates under different experimental conditions is analyzed through post-impact fatigue tests, and the correlation between impact damage and fatigue dissipation energy is determined. The validity of the proposed model is verified through fatigue tests under different stress ratios and impact energy levels.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Shaokai Hu, Ping Han, Chao Meng, Ying Yu, Shaolong Han, Haoyu Wang, Gang Wei, Zheng Gu
Summary: This study decorates MXene on the surface of carbon fiber using different bonding interactions to improve the interface adhesion and mechanical properties of carbon fiber-reinforced polymers composites (CFRPs). The results demonstrate that CFRPs reinforced by CF-c-MXene show the optimal properties, with significant improvements in impact strength and interfacial shear strength compared to the unsized carbon fiber-reinforced composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Steven U. Mamolo, Henry A. Sodano
Summary: This study demonstrates that chlorination of ANFs and oxygen plasma treatment of carbon fibers enables the formation of a chlorinated ANF (Cl-ANF) interphase, resulting in a 79.8% increase in interfacial shear strength and a 33.7% increase in short beam strength in CFRP composites. This method provides a rapid and reliable process to improve the mechanical properties of CFRPs without degrading the tensile strength of the carbon fibers.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Yuyang Zhang, Huimin Li, Xin Liu, Yanhong Chen, Chengwei Qin, Daining Fang
Summary: Establishing a prediction model for the mechanical properties of three-dimensional tubular braided composites at different temperatures is of great significance. This study adopted a multi-scale modeling framework based on micro-computed tomography to consider the characteristics of the real yarn cross section and establish a realistic trans-scale finite element model for the composites. The predicted mechanical properties were found to be significantly affected by temperature.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Shengtao Dai, Fei Yan, Jiaming Guo, Huiru Hu, Yu Liu, Liu Liu, Yuhui Ao
Summary: This study successfully synthesized a hyperbranched waterborne polyurethane sizing agent and cellulose nanocrystal modified zinc oxide nanohybrids to improve the interface and properties of carbon fiber reinforced composites. The modified composites exhibited remarkable enhancements in mechanical properties and exceptional UV resistance.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
Article
Materials Science, Composites
Libera Vitiello, Martina Salzano de Luna, Veronica Ambrogi, Giovanni Filippone
Summary: The identification of the percolation threshold in short fiber composites is crucial for assessing material properties and biodegradation speed. In this study, an original rheological approach was used to estimate the percolation threshold of hemp and kenaf-based composites, which showed good agreement with conventional dielectric spectroscopy analyses.
COMPOSITES SCIENCE AND TECHNOLOGY
(2024)
