Experimental Investigation of Woven E-Glass Epoxy Composite Laminates Subjected to Low-Velocity Impact at Different Energy Levels

Impact resistance is an inevitable characteristic of the composites employed in the high performance structural applications. Due to the growing interest in the use of sisal fibre as reinforcement in the polymer composites, it is required to determine the response of sisal/epoxy composites to low velocity impact at high incident energies where perforation can occur and assess the damage characteristics using a non-destructive technique. In this work, sisal/epoxy composites were subjected to drop weight impact in the velocity range of 3 m/s to 5 m/s at different energy levels between 20 J to 50 J according to the ASTM D7136. Based on the results observed, it is concluded that both the peak load and absorbed energy increased with the increasing incident energy level up to 40 J. At 50 J, perforation occurred and the maximum deformation was approximately 22 mm for the sisal/ epoxy composite. Damage characteristics and failure behaviour of the composite at different incident energies was examined from the visual images of the front and back face of the composite. The quantitative assessment of crack propagation in the sisal/epoxy composite and the damage area were determined from the ultrasonic C-scan images of the sample post impact at various energy levels.

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Low-velocity impact perforation response of titanium/composite laminates: analytical and experimental investigation

Mechanics Based Design of Structures and Machines ◽

10.1080/15397734.2021.1992778 ◽

2021 ◽

pp. 1-34

Author(s):

Ankush Sharma ◽

Velmurugan Ramachandran

Keyword(s):

Experimental Investigation ◽

Composite Laminates ◽

Low Velocity Impact ◽

Low Velocity ◽

Velocity Impact

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Low velocity impact behaviour of polypropylene and epoxy composite laminates reinforced with a basalt woven fabric

10.1063/1.5045897 ◽

2018 ◽

Author(s):

Pietro Russo ◽

Giorgio Simeoli ◽

Francesca Cimino ◽

Maria Rosaria Ricciardi ◽

Valentina Lopresto ◽

...

Keyword(s):

Composite Laminates ◽

Epoxy Composite ◽

Woven Fabric ◽

Low Velocity Impact ◽

Low Velocity ◽

Velocity Impact ◽

Impact Behaviour

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Low velocity impact performance of stitched flax/epoxy composite laminates

Composites Part B Engineering ◽

10.1016/j.compositesb.2017.02.003 ◽

2017 ◽

Vol 117 ◽

pp. 89-100 ◽

Cited By ~ 65

Author(s):

M. Ravandi ◽

W.S. Teo ◽

L.Q.N. Tran ◽

M.S. Yong ◽

T.E. Tay

Keyword(s):

Composite Laminates ◽

Epoxy Composite ◽

Low Velocity Impact ◽

Low Velocity ◽

Velocity Impact ◽

Impact Performance

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Effect of thickness on behaviour of E-glass/epoxy composite laminates under low velocity impact

Procedia Structural Integrity ◽

10.1016/j.prostr.2019.05.034 ◽

2019 ◽

Vol 14 ◽

pp. 265-272

Author(s):

T Sreekantha Reddy ◽

K Mogulanna ◽

K Gopinadha Reddy ◽

P Rama Subba Reddy ◽

Vemuri Madhu

Keyword(s):

Composite Laminates ◽

Epoxy Composite ◽

Low Velocity Impact ◽

Low Velocity ◽

Velocity Impact

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Low Velocity Impact of Carbon/Zylon and Carbon/Kevlar Composite Laminates

Materials ◽

10.1115/imece2005-81302 ◽

2005 ◽

Author(s):

Kamaldeen Yusuff ◽

Mohammad Mahinfalah ◽

Amin Salehi-Khojin ◽

Mohammad Alimi

Keyword(s):

Carbon Fiber ◽

Composite Laminates ◽

Energy Levels ◽

Low Velocity Impact ◽

Low Velocity ◽

Velocity Impact ◽

Low Modulus ◽

Side Face ◽

Impact Side ◽

The Impact

The response of composite laminates to low velocity impact at different energy levels for carbon fiber, carbon/Zylon and carbon/Kevlar composites were investigated in this study. The samples consisted of impact-side face sheet having different combination of 8-layer carbon, 6-layer carbon/2-layer Zylon and 6-layer carbon/2-layer Kevlar laminates. Tests were conducted at energy levels of 8J, 15J, 25J, and 50J. The aim of this study was to investigate the impact of adding a high modulus fiber or low modulus fiber to carbon fiber with respect to Low velocity impact at different energy levels. Results and overall conclusions for each of the composite laminates are presented in detail.

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