EXPERIMENTAL AND THEORETICAL STUDY ON THE ENERGY ABSORPTION OF COMPOSITE SQUARE TUBES UNDER QUASI-STATIC COMPRESSIVE LOAD

Ramadan Omar Saied

doi:10.66411/jer.v20i.280

Authors

Ramadan Omar Saied Mechanical and Industrial Department Faculty of Engineering, University of Tripoli Author

DOI:

https://doi.org/10.66411/jer.v20i.280

Keywords:

Composite, Fiber glass, Kevlar, Energy absorption, Load, Crush

Abstract

This paper presents an experimental and theoretical study on the energy absorption characteristic of thin–walled glass woven roving reinforced polyester (GRP 0o /90o and ±45o) square tubes and Kevlar woven roving reinforced polyester (KRP 0o/90o) tubes under quasi- static axial crushing load. Eight square tubes with dimensions of (100 × 100 × 1000) mm were manufactured using hand lay-up method and specimens were cut and fabricated from these tubes according to L/W ratio. All the tubes were tested using the Instron 4507 Testing Machine with maximum load cell of 200 kN. Load-displacement curves were obtained during the tests of specimens. In addition a description of the deformation processes of the tubes was discussed. It was concluded that a considerable energy was dissipated during the crushing of the tubes. Regular,

mixed and irregular fracture modes were observed. Loads carrying capacity of GRP tubes were found to be similar to those of KRP tubes while the mean load carrying capacity and energy absorption were lower in the case of GRP tubes

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