Modal vibration response of hybrid composite panel having artificial impregnated defects: A comparison

2021 ◽  
Author(s):  
Rahul Kumar Patil
2019 ◽  
Vol 129 ◽  
pp. 119-127 ◽  
Author(s):  
Faiz Zulkifli ◽  
Jan Stolk ◽  
Ulrich Heisserer ◽  
Alex Tuck-Mun Yong ◽  
Zhiyi Li ◽  
...  

Author(s):  
Pruthwiraj Sahu ◽  
Nitin Sharma ◽  
Hukum C Dewangan ◽  
Subrata K Panda

The finite-element time-dependent deflection and stress responses of the shallow composite panels subjected to variable mechanical loadings (uniformly distributed load and sinusoidally distributed load) are reported in this article. The study reveals the influence of the advanced fibre hybridization (glass–carbon–kevlar) on the dynamic responses and establishes the accuracy of the numerical responses by comparing them with the experimental values. The numerical steady-state deflections of the hybrid composite structure are evaluated using a generic mathematical model derived through Reddy's third-order shear deformation in conjunction with the finite-element technique and Newmark's time integration scheme. The experimentally evaluated mechanical properties of the fabricated composites are utilized in the computations. The validity of the computed solutions is ascertained with in-house experimental (transient deflection) results. Besides, the numerical model is extended to assess the parametric dependence (aspect ratio, thickness ratio, curvature ratio, geometry, hybrid schemes and support conditions) of the dynamic deflection/stress responses of hybrid composite shallow shell panels subjected to variable mechanical loading types.


2020 ◽  
Vol 194 ◽  
pp. 177-195
Author(s):  
Shuren Chen ◽  
Yuepeng Zhou ◽  
Zhong Tang ◽  
Shunan Lu

2011 ◽  
Vol 311-313 ◽  
pp. 68-71 ◽  
Author(s):  
Yulfian Aminanda ◽  
Wan Luqwan Hakim Hamid

An experimental campaign on metallic-palm fiber-metallic hybrid subjected to impact loading using spherical projectile has been carried out. High initial energy impact with projectile mass of 24 kg and speed of 1, 3 and 5 mm/s, has been set enabling to determine the energy absorption capability of hybrid composite panel. The influence of stacking sequences metallic-palm-fiber-metallic and metallic-palm fiber-metallic-palm fiber-metallic with different thickness of metallic and palm fiber, to the energy absorption were investigated. The effect of different striker radius; 10, 13 and 20 mm were carried out as well. The mechanism of failure and energy absorbed by the hybrid composite panel and its components; metallic alone and palm fiber alone, were carried out to understand the advantage of having hybrid structure. The optimum configuration of hybrid panel in term of stacking sequence to absorb the energy of impact is proposed. The methodology of this study can be used for designing the armor to absorb the energy of projectile using palm fiber composite panel.


2018 ◽  
Vol 26 (7) ◽  
pp. 408-419 ◽  
Author(s):  
Chengqiang Luo ◽  
Bin Yang ◽  
Fu-Zhen Xuan ◽  
Liang He ◽  
Kang Yang

A double-lap bolted composite joint was designed. In the joint, the base material was woven glass fibre–reinforced epoxy (WGF/Epoxy) composite, and the outer plates were WGF/Epoxy, woven carbon fibre–reinforced epoxy (WCF/Epoxy) and WGF/WCF/Epoxy hybrid composite laminates, respectively. Fundamental mechanical properties of the composite panels were determined. Flexural testing of the designed bolted joints was performed. Scanning electron microscopy was used to compare the damage modes. The interlaminar curves could be divided into different stages. The flexural load–displacement curves had progressive damage characteristics. The strengths of joints with hybrid composite panel as outer plates were between those of pure specimens, and hybrid composites with WGF as contact surface had a positive hybrid effect.


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