Low velocity impact analysis on composite structures – A review

2018 ◽  
Author(s):  
Shreekant Patil ◽  
D. Mallikarjuna Reddy ◽  
Munirami Reddy
Keyword(s):  
Composite Structures ◽  
Impact Analysis ◽  
Low Velocity Impact ◽  
Low Velocity ◽  
Velocity Impact

Low-Velocity Impact Analysis of a Stiffened Composite Panel

2015 ◽  
Author(s):  
Venkata M. K. Akula
Keyword(s):  
Residual Strength ◽  
Composite Structures ◽  
Impact Analysis ◽  
Impact Damage ◽  
Low Velocity Impact ◽  
Composite Panel ◽  
Design Parameters ◽  
Low Velocity ◽  
Velocity Impact ◽  
Strength Capacity

The layered architecture of composite material allows for designing light-weight structural components. However, one of the challenges associated with composite structures is design and analysis considering impact damage. Although the damage associated with high-velocity impact events is often readily observed in a structure, by loss of material, for example, low-velocity impact damage is not always visible. However, low-velocity impact damage can undermine the strength capacity of a composite component. To ensure the structural integrity of components, predicting the residual strength after impact damage is critical. In this paper, a methodology for analysis of low-velocity impact on a curved composite panel is discussed. First, impact analysis of the panel utilizing Abaqus\Explicit is presented. A metallic projectile is utilized to simulate a tool drop event. Thereafter, a simulation technique for predicting the residual strength of the panel is discussed. The residual strength is measured in terms of collapse load when the panel is subjected to axial compression. Finally, parameter sensitivity analysis is performed to understand the influence of the various design parameters on the residual strength of the component after impact. This procedure requires automating the entire simulation workflow. The results of the simulation are presented along with the important observations.

scholarly journals Low Velocity Impact and Compression after Impact Properties on Gamma Irradiated Kevlar/Oil Palm Empty Fruit Bunch Hybrid Composites

Coatings ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 646
Author(s):  
Siti Madiha Muhammad Amir ◽  
Mohamed Thariq Hameed Sultan ◽  
Ain Umaira Md Shah ◽  
Mohammad Jawaid ◽  
Syafiqah Nur Azrie Safri ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Oil Palm ◽  
Composite Structures ◽  
Gamma Ray ◽  
Hybrid Composites ◽  
Low Velocity Impact ◽  
Empty Fruit Bunch ◽  
Low Velocity ◽  
Velocity Impact ◽  
Compression After Impact

This work investigates the dynamic impact response of Kevlar/oil palm empty fruit bunch (EFB) hybrid composite structures with/without gamma radiation under low velocity impact (LVI) and compression after impact (CAI) test. The layering pattern Kevlar/oil palm EFB/Kevlar (K/OP/K) was applied in this work. Irradiation with gamma ray with various doses were applied from 25–150 kGy. LVI results shows that hybrid Kevlar/oil palm EFBs (Kevlar/OPEFB) that were not irradiated have greater impact resistance as compared to irradiated hybrid Kevlar/OPEFB. It was also observed that the hybridization of Kevlar/OPEFB with gamma irradiation helped to improve the compressive residual strength of the composites. It was found that Kevlar/OPEFB hybrid composites with the layering sequence K/OP/K can withstand up to 35 J of impact energy, with the optimum gamma radiation dose at 50 kGy.

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