Article
Mechanics
P. Mohammadkhani, S. S. Jalali, M. Safarabadi
Summary: This research investigated the effects of using steel wires on energy absorption of polyurethane foam core glass/epoxy skin sandwich panels through experimental and numerical methods, showing that the Star layout specimen is more effective in enhancing low-velocity impact behavior.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
Xin Pan, Liming Chen, Houchang Liu, Weiming Qin, Bing Du, Weiguo Li
Summary: The impact resistance of corrugated sandwich panels made from thermoplastic composites (TPC) was investigated in this study. The results show that TPC sandwich panels exhibit an overall collapse response, good integrity, and stability. The impact resistance can be further improved by adjusting the thickness of the top and middle layers.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2022)
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
Yefei Zhu, Yuguo Sun
Summary: This paper presents analytical and experimental investigations on the low-velocity impact response of multilayer foam core sandwich panels with composite face sheets, showing that the impact resistance of multilayer sandwich panels is superior to monolayer structures. It also suggests that adjusting the local stiffness close to the top face sheet can improve energy absorption, but at the cost of increased maximum contact force.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Mechanical
Milad Hosseinkhani, Hamed Ghavami, Mojtaba Haghighi-Yazdi, Mahmoud Mosavi Mashhadi, Majid Safarabadi
Summary: This study investigates the effect of viscoelastic properties in foam-filled sandwich panels under low-velocity impact loading. A finite element (FE) model using ABAQUS software is developed to study the impact of considering and ignoring time-dependent behavior of composite facesheets and foam core. Material constitutive equations, damage characteristics, and failure modes are defined using a FORTRAN user-subroutine VUMAT. Experimental tests are conducted to characterize the material behavior of polyurethane foam and glass/epoxy composite material. The results of numerical simulations are validated through low-velocity impact tests on sandwich panels, showing good agreement with experimental results, and highlighting the importance of considering viscoelastic properties for accurate modeling.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2023)
Article
Mechanics
Xin Pan, Liming Chen, Jianqiang Deng, Wanqi Zhao, Shuai Jin, Bing Du, Yong Chen, Weiguo Li, Tao Liu
Summary: This study investigates the impact response and damage mechanisms of intersected corrugated sandwich panels (ICSPs) and regular corrugated sandwich panels (RCSPs) under different impact conditions. The results show that ICSPs have better integrity and higher energy absorption capacity compared to RCSPs, indicating their superior impact resistance.
COMPOSITE STRUCTURES
(2023)
Article
Materials Science, Composites
Gaojian Lin, Jiaqi Li, Fei Li, Pengwan Chen, Weifu Sun
Summary: This study proposes a method to improve the impact resistance of sandwich composite panels (SCPs) by filling the honeycomb core with shear-thickening gel (STG) mixed with silica particles. Experimental results show that the STG-filled honeycomb core effectively decreases penetration depth and reduces impact damage of the SCPs.
COMPOSITES COMMUNICATIONS
(2022)
Article
Mechanics
Honglei Xie, Hai Fang, Xiaolong Li, Li Wan, Peng Wu, Yi Yu
Summary: This paper presents an experimental investigation on impact damage detection of Paulownia wood core sandwich structures using infrared thermography (IRT). The study shows that damage information can be obtained from temperature distribution images acquired by IRT, and discusses the effects of different factors on the induced damage in the structures.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Stefano Signetti, Seunghwa Ryu, Nicola M. Pugno
Summary: An analytical model is developed to study the ballistic behavior of multilayer composite armors subjected to high-velocity impact. The model considers the effect of thickness compaction and curing pressure on impact toughness, and is validated through experiments and simulations. The study finds that graded multilayer configurations can enhance the toughness of armor, and have potential applications in the design and optimization of shielding structures.
COMPOSITE STRUCTURES
(2022)
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, 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
Chemistry, Physical
Zhou Wen, Ming Li
Summary: This study investigates the low-velocity impact response of honeycomb sandwich structures (HSS) using numerical simulation. The choice of construction material significantly affects the impact resistance and structural stability of the HSS. Glass fiber-reinforced PEEK is identified as the more appropriate face sheet material for the composite HSS, enhancing the overall impact resistance.
Article
Engineering, Mechanical
Pablo Oliveira, Sebastian Kilchert, Michael May, Tulio Panzera, Fabrizio Scarpa, Stefan Hiermaier
Summary: The study investigates the impact behavior of a sustainable sandwich panel utilizing upcycled bottle caps as a honeycomb core. Recycled core, ecological skin, and bio-adhesive show potential advantages compared to traditional components like aluminum skin and epoxy polymer. Addition of cement reinforcement enhances mechanical strength.
JOURNAL OF SANDWICH STRUCTURES & MATERIALS
(2022)
Article
Mechanics
Chen Chen, Hai Fang, Lu Zhu, Juan Han, Xiaolong Li, Zhen Qian, Xinchen Zhang
Summary: This study investigates the low-velocity impact properties of foam-filled composite lattice sandwich beams. The impact resistance of the sandwich beam is affected by factors such as lattice-web spacing, lattice-web thickness, foam density, foam thickness, impact height, and impact position. Experimental and numerical analyses reveal the failure modes and the influence of various parameters on the impact performance of the sandwich beams.
COMPOSITE STRUCTURES
(2023)
Article
Polymer Science
Peiyan Wang, Yongshun Chen, Chunxia Yue, Wei Zhao, Chenchen Lian, Ke Zhang, Jie Zheng, Zhufeng Yue
Summary: This paper investigates the impact and compression after impact (CAI) behaviors of composite stiffened panels using numerical simulation and experimental methods. Results show that the method used in this study achieves considerable accuracy in experimental results. The extent of damage is found to be related to various factors, and the influence of fatigue damage on residual strength after impact is also studied. The experimental and simulation results provide important insights for structural design and failure-mechanism analysis of composite stiffened panels.