Cover Image

Ratchetting of composite pipes

The uniaxial ratchetting characteristics of fibre glass reinforced epoxy laminate have been investigated in the present project. The specimens were subjected to cyclic axial stress with a constant mean stress of 40 MPa and a varying amplitude stress of 26.67 MPa and 53.33 MPa. Tests were also perfor...

Full description

Saved in:
Bibliographic Details
Main Author: Basaruddin, Khairul Salleh
Format: Thesis
Language:English
Published: 2007
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/9564/1/KhairulSallehBasaruddinMFKM2007.pdf
http://eprints.utm.my/id/eprint/9564/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:852dms.library.utm.my:8080/vital/access/manager/Repository/vital:852?site_name=Restricted Repository
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utm.9564
record_format eprints
spelling my.utm.95642018-09-27T05:20:59Z http://eprints.utm.my/id/eprint/9564/ Ratchetting of composite pipes Basaruddin, Khairul Salleh TJ Mechanical engineering and machinery The uniaxial ratchetting characteristics of fibre glass reinforced epoxy laminate have been investigated in the present project. The specimens were subjected to cyclic axial stress with a constant mean stress of 40 MPa and a varying amplitude stress of 26.67 MPa and 53.33 MPa. Tests were also performed on 50 mm diameter, Glass fibre Reinforced Epoxy (GRE) straight pipe. The pipe was subjected to a constant internal pressure of 1.875 MPa and a cyclic axial load. The finite element model in ABAQUS has also been simulated in similar loading case. The comparisons between experiment and simulation results were observed. The effect of fibre orientation on the rate of ratchetting was also investigated at the present project. The uniaxial and biaxial ratchetting strain was observed to increase with a number of cycles but decreased the rate of ratchetting. The specimen showed no further ratchetting rate and exhibited shakedown after some strain accumulation. On the basis of experiment and simulation, it appears that ratchetting would occur in the circumferential direction for a composite pipe subjected to constant internal pressure and cyclic displacement with no ratchetting observed in axial direction. A direction in fibre orientation seemed to have effect on the rate of ratchetting. Thus, the increasing of fibre angle from the axial load axis will increase the rate of ratchetting. 2007-10 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/9564/1/KhairulSallehBasaruddinMFKM2007.pdf Basaruddin, Khairul Salleh (2007) Ratchetting of composite pipes. Masters thesis, Universiti Teknologi Malaysia, Faculty of Mechanical Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:852dms.library.utm.my:8080/vital/access/manager/Repository/vital:852?site_name=Restricted Repository
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Basaruddin, Khairul Salleh
Ratchetting of composite pipes
description The uniaxial ratchetting characteristics of fibre glass reinforced epoxy laminate have been investigated in the present project. The specimens were subjected to cyclic axial stress with a constant mean stress of 40 MPa and a varying amplitude stress of 26.67 MPa and 53.33 MPa. Tests were also performed on 50 mm diameter, Glass fibre Reinforced Epoxy (GRE) straight pipe. The pipe was subjected to a constant internal pressure of 1.875 MPa and a cyclic axial load. The finite element model in ABAQUS has also been simulated in similar loading case. The comparisons between experiment and simulation results were observed. The effect of fibre orientation on the rate of ratchetting was also investigated at the present project. The uniaxial and biaxial ratchetting strain was observed to increase with a number of cycles but decreased the rate of ratchetting. The specimen showed no further ratchetting rate and exhibited shakedown after some strain accumulation. On the basis of experiment and simulation, it appears that ratchetting would occur in the circumferential direction for a composite pipe subjected to constant internal pressure and cyclic displacement with no ratchetting observed in axial direction. A direction in fibre orientation seemed to have effect on the rate of ratchetting. Thus, the increasing of fibre angle from the axial load axis will increase the rate of ratchetting.
format Thesis
author Basaruddin, Khairul Salleh
author_facet Basaruddin, Khairul Salleh
author_sort Basaruddin, Khairul Salleh
title Ratchetting of composite pipes
title_short Ratchetting of composite pipes
title_full Ratchetting of composite pipes
title_fullStr Ratchetting of composite pipes
title_full_unstemmed Ratchetting of composite pipes
title_sort ratchetting of composite pipes
publishDate 2007
url http://eprints.utm.my/id/eprint/9564/1/KhairulSallehBasaruddinMFKM2007.pdf
http://eprints.utm.my/id/eprint/9564/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:852dms.library.utm.my:8080/vital/access/manager/Repository/vital:852?site_name=Restricted Repository
_version_ 1643645190048579584
score 13.211869

Similar Items