eprintid: 7793
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/77/93
datestamp: 2023-11-09 16:19:37
lastmod: 2023-11-09 16:19:37
status_changed: 2023-11-09 16:10:26
type: article
metadata_visibility: show
creators_name: Ya, H.H.
creators_name: EL-Sobky, H.
title: Collapsed mode and specific energy absorption of glass filled polypropylene (GPE) and glass filled polyethylene (GPP) composite pipes under quasi-static axial loading
ispublished: pub
keywords: Collapsible tubes; Compression testing; Crushing; Fiber reinforced materials; Fibers; Filled polymers; Glass; Polyethylenes; Polypropylenes; Reinforced plastics; Volume fraction, Composite pipe; Energy absorption capacity; Extrusion technology; Fibre orientation; Fibre volume fraction; Glass fibre reinforced thermoplastic; Polyethylene composites; Specific energy absorption, Energy absorption
note: cited By 1
abstract: The behaviour of extruded glass fibre reinforced thermoplastic pipe under axial crushing load was investigated experimentally. It was envisaged that the difference between the axial and hoop moduli and strengths as well as the volume fraction would influence the mode of collapses and energy absorption. The moduli could be varied using a new extrusion technology, which controls the fibre orientation pattern, hence, the mechanical properties. The ability to vary the moduli and the fibre volume fraction provide means of controlling the collapse mode in order to optimise specific energy absorption. Axial compression tests were performed on glass filled Polypropylene and Polyethylene composite pipes. The samples were chosen with a variety of fibre volume fraction, Vf = 5 to 20 and average angle of orientation,? = 50o to 80o to evaluate the effect of anisotropy and Vf on the energy absorption capacity and collapse modes. The observations indicate that, the samples containing of higher Vf and?, collapsed in brittle failure mode (fragmentation), while those with less Vf and? angle collapsed in non-axis-symmetric (diamond) mode with local fracture. The galss fillet with polypropylene-60o (GPP-60) displayed the highest specific energy absorption (Es) compared to the other GPE, MDPE and LDPE pipe samples. However, the glass fillet polyethylene-75o (GPE-75) displayed the highest Es and the glass fillet polyethylene-65o (GPE-65) displayed the lowest Es compared with in the GPE pipes. The specific energy absorption of GPP-70 pipe (24 kJ/kg) and GPE-75 pipe (12 kJ/kg) is almost 50  and 25 of the amount of specific energy absorption of aluminium tubes (60 kJ/kg), respectively. Moreover, it is close to the specific energy absorption of glass-epoxy 15o (GE-15)/which is 30 kJ/kg, and much higher than aramid-epoxy-15o (AE-15)/which is 9 kJ/kg. © 2016 Trans Tech Publications, Switzerland.
date: 2016
publisher: Trans Tech Publications Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84992741192&doi=10.4028%2fwww.scientific.net%2fKEM.673.141&partnerID=40&md5=f7bf46284fbdf8373b00a7696ccd06a9
id_number: 10.4028/www.scientific.net/KEM.673.141
full_text_status: none
publication: Key Engineering Materials
volume: 673
pagerange: 141-149
refereed: TRUE
issn: 10139826
citation:   Ya, H.H. and EL-Sobky, H.  (2016) Collapsed mode and specific energy absorption of glass filled polypropylene (GPE) and glass filled polyethylene (GPP) composite pipes under quasi-static axial loading.  Key Engineering Materials, 673.  pp. 141-149.  ISSN 10139826