Behaviour of composite sandwich panels bonded with epoxy polymer matrix for railway sleepers
PhD Thesis
Title | Behaviour of composite sandwich panels bonded with epoxy polymer matrix for railway sleepers |
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Type | PhD Thesis |
Authors | |
Author | Ferdous, Wahid |
Supervisor | Manalo, Allan |
Aravinthan, Thiru | |
Institution of Origin | University of Southern Queensland |
Qualification Name | Doctor of Philosophy |
Number of Pages | 232 |
Year | 2017 |
Digital Object Identifier (DOI) | https://doi.org/10.26192/5c06151a8a82f |
Abstract | The Australian railway industry spends millions of dollars every year in replacing poor condition railway sleepers in order to maintain the track quality and ensure a safe track This study focused on investigating the behaviour of a fibre composite railway sleeper manufactured from composite sandwich panels and the panels are bonded together with epoxy polymer matrix. An intensive characterisation of the epoxy polymer matrix and composite sandwich panels was conducted to determine the effective usage of these materials for railway sleepers. The effect of resin-to-filler ratio on the thermal, physical, mechanical and durability properties of the epoxy polymer matrix were evaluated. Filler materials composed of fire retardant filler, hollow microsphere and fly ash were increased from 0% to 60% in the epoxy based matrix. The results showed that epoxy-based polymer mixes containing 30% to 50% The structural integrity and composite action between the sandwich panels and epoxy polymer matrix were investigated. The effects of binder properties, bond length, bond thickness and bond width were investigated to evaluate the bond behaviour of a composite sandwich panel and epoxy polymer matrix. The results indicated that the bond thickness has the greatest influence on the bond strength followed by the properties of polymer matrix, bond length and bond width. A bond thickness of 5 mm, bond length of 70 mm and using polymer matrix with 40% filler and 60% resin (by volume) can eliminate failure in the glue line and promote failure in the sandwich panels. Using these bond parameters, full-scale layered sandwich beams were The optimal design of layered sandwich beams for railway sleepers and the performance evaluation under static loads were conducted as the last study. The optimal shape An in-depth understanding of the behaviour of a new type of composite sleepers made from layered sandwich panels bonded by epoxy polymer matrix was the significant outcome |
Keywords | Australian Railway; railway sleepers; composite sandwich panels; epoxy polymer matrix |
ANZSRC Field of Research 2020 | 400510. Structural engineering |
401602. Composite and hybrid materials | |
Byline Affiliations | School of Civil Engineering and Surveying |
https://research.usq.edu.au/item/q4v6y/behaviour-of-composite-sandwich-panels-bonded-with-epoxy-polymer-matrix-for-railway-sleepers
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