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Research & Development in Material Science

Experimental and Numerical Approach to Investigate Damage Tolerance in FRP Composites Subjected to Transverse Low-Velocity Impact

  • Open or Close Prashant Rawat1,3*, Nand Kishore Singh2, Kalyan Kumar Singh3 and Ashish Kumar4

    1 School of Mechanical Engineering, Lingaya’s University, India

    2 Department of Mechanical Engineering, Dayananda Sagar University, India

    3 Department of Mechanical Engineering, Indian Institute of Technology (ISM), Dhanbad, India

    4 Department of Mechanical Engineering, Dehradun Institute of Technology, Dehradun

    *Corresponding author: Prashant Rawat, School of Mechanical Engineering, Lingaya’s University, Faridabad, Haryana-121002, India

Submission: August 02, 2018;Published: October 17, 2018

DOI: 10.31031/RDMS.2018.08.000684

ISSN : 2576-8840
Volume8 Issue2


This paper bridges the gap between experimental work and numerical simulation to investigate the damage caused in glass/epoxy laminate. A major drawback of low and/or high-velocity impact on polymer composite is online monitoring of induced stress, stress pattern and cross-section study of damage formation. Drop weight impact is done to investigate energy absorption and damage caused in glass woven composite laminates. Validation, as well as the elimination of experimental limitations, is done using 3D commercially available finite element software LS-DYNA. Eight layered symmetrical laminate of glass fiber reinforced polymer (GFRP) composite was fabricated using hand layup technique assisted by vacuum bagging method. Lowvelocity impact (LVI) testing is done at three energy levels 50J, 70J and 90J. Results of the study justified a good agreement between experimental work and numerical modeling. Furthermore, the present investigation concluded that it is nearly imperfect if only experiment-based study or FEM analysis is performed for LV indentation. Hence, to attain throughout evaluation of damage resistance it is necessary to consider both methods i.e. experimental approach and numerical analysis simultaneously.

Keywords:FRPs; Symmetrical laminates; LVI; Damage tolerance; LS-DYNA

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