Article
Mechanics
Z. P. Chow, Z. Ahmad, K. J. Wong, S. I. B. Syed Abdullah
Summary: This work aimed to analyze the quasi-static perforation of fibre metal laminates (FML) at elevated temperatures through experimental and numerical methods. The study found that aluminium plastic deformation contributes most to energy dissipation, while adhesive delamination and GFRP fibre breakage also play a role. Higher temperatures degrade the cohesive and GFRP materials more significantly compared to aluminium. The FE modelling methodology proposed can simulate, predict and analyse the quasi-static perforation of FMLs with consideration of temperature effects.
COMPOSITE STRUCTURES
(2021)
Article
Automation & Control Systems
Hamza Blala, Lihui Lang, Shahrukh Khan, Lei Li
Summary: The demand for lightweight materials with structural integrity is growing due to global concerns over air pollution and excessive fuel consumption. Fiber metal laminates (FMLs) show promise in balancing weight reduction and structural reliability, despite limitations in elongation of fibers and existing forming approaches. Research has focused on understanding failure modes, defect elimination, and improving drawability of laminate systems. Comparative studies have been conducted on GLARE material forming behavior using conventional and non-cured laminate methods, showing positive effects on formed cups and depth compared to conventional methods. This investigation aims to enhance FMLs and GLARE part applications over traditional methods.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Mechanics
Ashwin R. Kristnama, Xiaodong Xu, Michael R. Wisnom, Stephen R. Hallett
Summary: This paper presents prediction of high velocity, oblique impact response and quasi-static residual tensile strength of thin carbon/epoxy laminates using FE models. The predicted impact damage was validated against test results, showing increasing damage with impact energy and the influence of projectile orientation. Residual tensile strength of impacted laminates was investigated, with good agreement for edge-impacted laminates but unconservative results for centre-impacted laminates. Machined notches were also studied, showing close agreement between predicted and experimental results for edge-impacted laminates.
COMPOSITE STRUCTURES
(2021)
Article
Mechanics
Sasanka Kakati, D. Chakraborty
Summary: This paper investigates the oblique low velocity impact behavior of clamped GLARE plates and analyzes the influence of obliquity and coefficient of friction on the impact mechanism and extent of interfacial delamination.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2023)
Article
Mechanics
Yu Gong, Xinjian Chen, Wangchang Li, Libin Zhao, Junan Tao, Jianyu Zhang, Ning Hu
Summary: The effects of stacking sequence on the R-curve and traction-separation relation in unidirectional and multidirectional CFRP DCB laminates were systematically investigated, showing strong influence on fiber bridging length, steady-state fracture toughness, and maximum bridging stress. However, there was no clear relationship between these factors and the stacking sequence. The obtained traction-separation relations were successfully integrated into a tri-linear cohesive zone model and numerical results agreed well with test results, demonstrating applicability for delamination modeling in composite laminates with fiber bridging effects.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Civil
Peifei Xu, Zhengong Zhou, Tianzhen Liu, Shidong Pan, Xiaojun Tan
Summary: The study assesses the damage in single-lap fiber metal laminate joints with various geometries under uniaxial tension, using acoustic emission and digital image correlation to record events and strain fields, with identification based on peak frequencies corresponding to different types of damage. The analysis utilizes Hashin criterion, cohesive constitutive relations, and ductile damage criterion to predict damage evolution in fiber metal laminate.
THIN-WALLED STRUCTURES
(2022)
Article
Engineering, Civil
Jipeng Zhang, Yue Wang, Yang Wen, Xiangjun Dai, Yuan Zhao, Guodong Fang
Summary: This study conducted tests on Glare under different impact energy and built an effective finite element model. The research revealed the contributions of different constituents in the energy absorption aspect and clarified the distributions of energy evolutions in laminate and constituent levels. Furthermore, it elaborated the damage evolutions of individual layers and the failure sequence of the entire laminate.
THIN-WALLED STRUCTURES
(2023)
Article
Materials Science, Composites
B. Abazadeh, Hr Maleki
Summary: This study investigated the effect of bolt torque tightening on the fatigue behavior of GLARE, finding that applying and increasing clamping force can enhance the fatigue life of GLARE specimens. Compared to aluminum alloy 2024-T3 plates, the effect of clamping force is more noticeable in GLARE specimens due to longer fatigue crack growth life of GLARE under low load ranges.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Engineering, Mechanical
Jianjun Li, Tingting Chen, Tianyu Chen, Wenjun Lu
Summary: Extensive experiments have shown that gradient metals have significantly lower coefficient of friction (COF) compared to their homogeneous counterparts, with the mechanism stemming from strain delocalization induced by co-deformation. By tuning the gradient microstructure, the COF can be further minimized. This study provides insights for designing gradient nanostructured Cu with high strength and low COF.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Engineering, Mechanical
Ke Yuan, Kai Liu, Zhonggang Wang, Mingzhi Yang
Summary: This study examined the mechanical behavior of carbon fiber reinforced plastic (CFRP) materials subjected to local loads through experiments and numerical simulations. The results showed that materials in beam shape exhibited higher perforation resistance and more diverse damage patterns compared to square-shaped specimens. The findings were further validated through numerical simulations considering strain-rate effects.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2021)
Article
Mechanics
M. Smolnicki, Sz Duda, P. Stabla, T. Osiecki
Summary: This paper analyzes the behavior of fibre metal laminates with unconventional thermoplastic matrices under flexural loading. Experimental tests and numerical simulations are conducted to study the flexural behavior and interlaminar shear stress of two different specimen configurations. The results show differences in behavior and stress distribution between the parallel and perpendicular fiber configurations. The study suggests that the obtained material data can be used for analyzing more complex structures, but additional factors need to be considered for the perpendicular fiber configuration.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Composites
Azadeh Fathi, Gholamhossein Liaghat, Hadi Sabouri, Mahmoud Chizari, Homayoun Hadavinia, Sahand Chitsaz Charandabi
Summary: The study showed that adding 0.2 wt% GNPs can delay the failure modes, improve the strength and fracture toughness of specimens, but weaken the bonding between aluminum and composite interface.
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
(2021)
Article
Multidisciplinary Sciences
Mengyu Jiang, Shijie-Liu, Jiu-mei Xiao
Summary: With the development of the economy, car ownership is increasing day by day. In the context of energy shortage and environmental pollution, it is crucial to study lightweight and ensure car safety. This paper proposes a lightweight fiber metal laminate (FML) with excellent cushioning and energy absorption characteristics for car body by studying the deformation and energy absorption mechanism of ordinary groove plate under flat pressure. Experimental and finite element simulation results prove that this structure has good cushioning energy absorption effect. The M-shaped corrugated core FML with 2.5 mm groove depth has 46.3% of the peak force of traditional trapezoidal corrugated-core FMLs under the same conditions. Additionally, the energy absorption capacity of the M-shaped corrugated core FML with 2 mm groove depth is 1.62 times of that of traditional trapezoidal corrugated-core FMLs before the top plate of sandwich unit touches the bottom plate. The cushioning energy absorption mechanism of M-shaped corrugated core FML is further explained by simulation.
Article
Materials Science, Multidisciplinary
Steffen Tinkloh, Tao Wu, Thomas Troester, Thomas Niendorf
Summary: This paper numerically investigates the impact of fiber waviness on residual stresses in fiber metal laminates, presenting a global-local finite element analysis approach to validate simulated results. Fiber waviness can result in varying residual stress distribution in different thickness directions.
Article
Mechanics
Xiaofan Xu, Xiaoliang Jin
Summary: This paper investigates the effects of fiber orientation and oblique angle on cutting forces and surface damage in the oblique cutting process of unidirectional CFRP. A 3-D finite element model is proposed to simulate the cutting process and the results are validated through experiments.
COMPOSITE STRUCTURES
(2021)
