Experimental study of temperature effects on composite laminates subjected to multi-impacts

Amaro, Ana M.; Reis, P.N.B.; Neto, Maria Augusta

doi:10.1016/j.compositesb.2016.05.021

Cited by 45 publications

(23 citation statements)

References 34 publications

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“…These type of events are responsible by damages that are difficult to detect [3,4] and, simultaneously, responsible by significant reductions of the residual mechanical properties [5][6][7][8]. Studies about composite laminates subjected to low-velocity impact events on the through-thickness direction are abundant in the literature, especially in terms of damage characterization [9][10][11][12], compression-after-impact [13], multi-impacts [14], environmental effects [15][16][17] and numerical investigations [18,19]. On the other hand, literature also presents strategies to improve their impact performance with resource to hybridisation [20][21][22] or using nano-enhanced resins [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Impact response of laminated cylindrical shells

Coelho

Navalho

Reis

2019

Frattura Ed Integrità Strutturale

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Composite laminates subjected to low-velocity impact events on the through-thickness direction are conveniently studied and disseminated in the open literature. However, in terms of laminate cylindrical shells this subject is less common. Therefore, the main goal of the present work is to study the impact response of laminate composite cylindrical shells composed by different type of fibres. For this purpose, laminates with different configurations (6C, 2C+2K+2C and 2C+2G+2C), where the "number" represents the number of layers used and C=Carbon, K=Kevlar and G=Glass fibre layers, were analysed in terms of static and impact strength. It is possible to conclude that both static and impact performance are strongly influenced by the shells' configuration. In terms of compressive static strength, the Kevlar hybrid shells present values 53.2% higher than the 6C shells, while the glass hybrid shells present values 17.3% lower. The impact analyses shows, regardless the similarity of the maximum loads for all configurations, that Kevlar hybrid shells achieved the highest elastic recuperation and the glass hybrid shells the maximum displacement.

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Section: Introductionmentioning

confidence: 99%

Impact response of laminated cylindrical shells

Coelho

Navalho

Reis

2019

Frattura Ed Integrità Strutturale

Self Cite

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“…Although some quite useful design guidelines can be derived from the previous works and data are available about impact tests carried out between room temperature and 300 °C [34][35][36], high-velocity impact tests on honeycomb sandwich structures at high temperatures are still scarce.…”

Section: Introductionmentioning

confidence: 99%

High-temperature high-velocity impact on honeycomb sandwich panels

Xie

Meng

Ding

et al. 2018

Composites Part B: Engineering

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This work presents an investigation on the damage and high-speed impact deformation mechanisms at elevated temperatures in honeycomb sandwich panels made from PM1000 and PM2000 alloys. The impact temperatures ranged from 22°C to 866°C. The investigation was performed experimentally using a custom-made gas gun rig, and by using Finite Element and developing a phenomenological analytical model to predict the residual velocity and ballistic limit equations for the case in which the diameter of the projectile is close or smaller to the honeycomb cell length. The sizes of the holes have been also evaluated by carrying out numerical thermal loading simulations on honeycomb sandwich specimen models impacted at high speed. The predictions provided by the Finite Elements and the analytical model give a good agreement with the results from the experimental tests. The hole diameters for the two idealized normal impact cases, in which the projectile hits the cell core and at the triple-wall intersection of the core, were also presented as a function of the projectile diameter and velocity in this paper.

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“…(Boominathan et al 2014) used unidirectional and cross-ply (0/90) carbon/epoxy laminates subject to impacts with energy of 2.17 J at temperatures 30 o C, 55 o C, 75 o C and 90 o C. They found the percentage reduction in flexural strength for both cross ply and unidirectional laminates impacted at high temperature is lower than those tested at room temperature. (Amaro et al 2016) tested CFRP subject to single and multiple impact events. Two impact energies were used (1 J and 3 J) and the experiments were carried out at three different temperatures.…”

Section: Introductionmentioning

confidence: 99%

A new approach to the cohesive zone model that includes thermal effects

Ibrahim

Albarbar

2019

Composites Part B: Engineering

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This study presents a cohesive zone model combining mechanical and thermal effects. Thermal stress was added to the Helmholtz free energy density in order to derive a new approach to incremental damage which included the effect of temperature. The developed damage model has been implemented in ABAQUS using the UMAT subroutine and applied of two different specimens; a three-point bending specimen and a Double Cantilever Beam. The effectiveness of the new method was tested for the given specimens at different temperatures. The simulation results revealed that the total energy of the interface element of high strength carbon fiber reinforced plastic increased as its temperature decreased. It is demonstrated that the loaddisplacement curves obtained from the numerical model for both test specimens were in good agreement with experimental data available in literature.

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Experimental study of temperature effects on composite laminates subjected to multi-impacts

Cited by 45 publications

References 34 publications

Impact response of laminated cylindrical shells

Impact response of laminated cylindrical shells

High-temperature high-velocity impact on honeycomb sandwich panels

A new approach to the cohesive zone model that includes thermal effects

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