Show simple item record

dc.contributor.authorNikforooz, Mehdi
dc.contributor.authorMontesano, John
dc.contributor.authorGolzar, Mohammad
dc.contributor.authorShokrieh, Mahmood Mehrdad
dc.date.accessioned2018-11-21 14:12:39 (GMT)
dc.date.available2018-11-21 14:12:39 (GMT)
dc.date.issued2019-03-15
dc.identifier.urihttps://dx.doi.org/10.1016/j.compositesb.2018.10.065
dc.identifier.urihttp://hdl.handle.net/10012/14165
dc.descriptionThe final publication is available at Elsevier via https://dx.doi.org/10.1016/j.compositesb.2018.10.065 © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.description.abstractTensile fatigue behaviour of glass fiber/polyamide composites, including unidirectional ([0]8, [90]8) and cross-ply ([02/902]s, [04/904]s and [904/04]s) laminates, was studied and compared to that of similar glass fiber/epoxy composites. The fatigue resistance of cross-ply glass/polyamide was greater than that of glass/epoxy while also exhibiting lower stiffness reduction. To explain this key observation, residual stiffness and residual strength fatigue tests were performed on cross-ply laminates, while optical microscopy was used to measure ply crack density during the different stages of cycling. Testing of the cross-ply laminates at lower peak stresses of 50% of the ultimate tensile strength (i.e., high cycle fatigue regime) revealed partial cracks that did not propagate completely through the width and thickness of plies due to high matrix toughness and other observed toughening mechanisms such as matrix bridging. A micromechanical finite element model with explicit ply cracks was also used to predict laminate stiffness degradation corresponding to observed ply crack densities, revealing that stiffness degradation was overpredicted when cracks were assumed to span the entire specimen width. Additional finite element simulations with partial cracks showed notably less stiffness reduction. These observations suggest glass/polyamide is inherently more damage tolerant than glass/epoxy and may be a suitable replacement for fatigue critical structures.en
dc.description.sponsorshipUniversity of Waterlooen
dc.language.isoenen
dc.publisherElsevieren
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectFatigueen
dc.subjectFinite element analysis (FEA)en
dc.subjectMechanical testingen
dc.subjectOptical microscopy physical methods of analysisen
dc.subjectPolymer-matrix composites (PMCs)en
dc.subjectThermoplastic resinen
dc.titleAssessment of failure toughening mechanisms in continuous glass fiber thermoplastic laminates subjected to cyclic loadingen
dc.typeArticleen
dcterms.bibliographicCitationNikforooz, M., Montesano, J., Golzar, M., & Shokrieh, M. M. (2019). Assessment of failure toughening mechanisms in continuous glass fiber thermoplastic laminates subjected to cyclic loading. Composites Part B: Engineering, 161, 344–356. doi:10.1016/j.compositesb.2018.10.065en
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Mechanical and Mechatronics Engineeringen
uws.typeOfResourceTexten
uws.typeOfResourceTexten
uws.peerReviewStatusRevieweden
uws.scholarLevelFacultyen


Files in this item

Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record

Attribution-NonCommercial-NoDerivatives 4.0 International
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 International

UWSpace

University of Waterloo Library
200 University Avenue West
Waterloo, Ontario, Canada N2L 3G1
519 888 4883

All items in UWSpace are protected by copyright, with all rights reserved.

DSpace software

Service outages