The role of shape memory alloy on impact response of glass/epoxy laminates under low temperature

Kang, Ki-Weon; Kim, H. J.; Kim, J. K.

doi:10.1007/bf03177394

Cited by 11 publications

(2 citation statements)

References 11 publications

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“…Ibekwe et al [8] have experimentally studied the impact and residual load carrying capacity of unidirectional and cross-ply laminates at low temperatures. Kang et al [9] have experimentally studied the damage behaviour of glass/epoxy laminates with embedded SMA wire subjected to low-velocity impact under low temperature. Metin Sayer et al [10] have studied and reported the impact behaviour of hybrid composites (carbon-glass fibre/epoxy), subjected to both low-velocity impact and various temperatures ranging from −20 to 60 • C. The effect of temperature on maximum energy, maximum deflection, maximum impact force, ductility and compression after impact was studied at different low impact energy levels (8, 15 and 25 J) with the temperature range of 50-120 • C. The effect of temperature in the range of 50-120 • C on impact response at different energy levels such as impact force, energy has been reported.…”

Section: Introductionmentioning

confidence: 99%

Influence of SMA reinforcement on the impact resistance of GFRP composite laminates under different temperatures

et al. 2016

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Plain glass fibre-reinforced polymeric (GFRP) laminates and GFRP reinforced with randomly oriented short strips of shape memory alloy (SMA) were prepared by hand lay-up method. The SMA strip reinforcement was placed at 0.75 × thickness of the laminate with weight fractions of 2, 4 and 6%. The specimens were exposed to drop weight impact test and the experiments were conducted at a constant impact velocity of 2.80 m s −1 with different test temperatures such as 303, 333 and 363 K. The impact damage area was evaluated using lighting technique and fracture response was analysed using scanning electron microscopic (SEM) images. Absorption of impact energy and damage area due to low velocity impact were calculated. It was observed that with the higher temperature, the SMA/GFRP laminates exhibit marginally-enhanced damage resistance compared to the plain GFRP laminates. Also, addition of SMA reinforcement was not contributing much to the impact resistance at higher temperature.

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Section: Introductionmentioning

confidence: 99%

Influence of SMA reinforcement on the impact resistance of GFRP composite laminates under different temperatures

et al. 2016

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“…Composite structures in general are susceptible to a wide range of damage and defects, which can occur during manufacture as well as during service [2][3][4] [6][7][8]. Also, although it is expected that protective materials on vessels can enhance their resistance to low velocity impact, the impact resistance is greatly affected by constituent materials, geometry and their lay-ups, and even the shape of the indenter [9,10]. Therefore, more research is necessary to understand the impact damage behavior of composite vessels with protective materials applied to the surface.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Low Velocity Impact Damage of Filament Wound Composite Vessels with Surface Protective Materials

Lee¹,

Kang²

2010

Journal of the Korea Academia-Industrial cooperation Society

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This paper presents the impact damage behavior of filament wound composite vessels and the effect of surface protective materials on their impact resistance. Using an instrumented impact testing machine, a series of impact tests was performed on the base panels and the protected panels (panels with surface protective materials of rubber, kevlar/epoxy or glass/epoxy laminates) that were cut from the full scale vessel. And the impact damage parameters were used to identify the effect of protective materials on the damage resistance of composite vessels. Damage resistance of the composite vessels was considerably affected by the protective materials regardless of the shape of the indenters. Among the protective materials, glass/epoxy laminates was the most effective mean for improving the damage resistance of composite vessels.

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Modeling the effective properties and thermomechanical behavior of SMA‐SMP multifunctional composite laminates

2011

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The research work presents the modeling of effective properties and thermo‐mechanical behavior of shape memory fiber (SMF) and shape memory polymer (SMP) composite laminates using micromechanical approaches based on the method of mixtures (MOM) and method of cells (MOC). The fiber is made of a nickel‐titanium (Ni‐Ti) shape memory alloy (SMA), while the matrix consists of a shape memory thermoset epoxy polymer (SMP). The use of an SMP matrix provides large strain compatibility with the SMA fiber, while being active at high temperatures without losing its elastic properties. Additionally, the SMP matrix is also able to produce similar pseudoelastic and shape memory effects, which are noticed in SMAs. In the analysis, a two step homogenization scheme is followed. In the first step the effective properties of each layer are determined via a micromechanics approach with iso‐strain conditions. In the second step the effective properties of the SMF‐SMP composite are computed making a thin plate theory assumption, which takes into account the transverse shear deformations. The possible elastic couplings for SMF‐SMP laminates are discussed, and the laminate force and moment resultants are computed for various laminate configurations. The analysis takes into account the effects of phase transformations and the resulting change in the fiber–matrix modulus. The results have been compared by considering different fiber volume fractions, temperatures, fiber orientations, and lamina stacking sequences. The results show that adaptive SMA‐SMP composites laminates can be developed that provide shape controllability via tunable laminate stiffnesses leading to optimal response. Furthermore, the work presents the necessary framework for a reliable and efficient analysis of SMA‐SMP laminates for practical applications. The theory can be directly used in established plate and shell formulations of finite element analysis. Finally, the variations in force and moment resultants with respect to fiber orientations and stacking sequences are presented, which are useful to study the bending and buckling characteristics of active composites for shape control of adaptive structures. The work concludes that efficient adaptive laminate development for high performance composite applications, exhibiting large shape adaptivity, high stresses, and increased stiffness, are feasible as compared to SMA composites without active matrix. POLYM. COMPOS., 2011. © 2011 Society of Plastics Engineers

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The role of shape memory alloy on impact response of glass/epoxy laminates under low temperature

Cited by 11 publications

References 11 publications

Influence of SMA reinforcement on the impact resistance of GFRP composite laminates under different temperatures

Influence of SMA reinforcement on the impact resistance of GFRP composite laminates under different temperatures

Assessment of Low Velocity Impact Damage of Filament Wound Composite Vessels with Surface Protective Materials

Modeling the effective properties and thermomechanical behavior of SMA‐SMP multifunctional composite laminates

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