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The joining of precoated sheet steels to dissimilar contruction materials. / David Thomson

Swansea University Author: David Thomson

Abstract

Within the UK steel industry it is believed that continued growth of steel usage in the construction sector would be facilitated by offering multi-material solutions which combine the benefits of several materials (i.e. precoated sheet steels, aluminium alloy, glass, timber and mortar). A review of...

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Published: 2008
Institution: Swansea University
Degree level: Doctoral
Degree name: EngD
URI: https://cronfa.swan.ac.uk/Record/cronfa42587
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first_indexed 2018-08-02T18:55:04Z
last_indexed 2018-08-03T10:10:32Z
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spelling 2018-08-02T16:24:29.7589956 v2 42587 2018-08-02 The joining of precoated sheet steels to dissimilar contruction materials. ed08601cede5e3e05d200f61038cd603 NULL David Thomson David Thomson true true 2018-08-02 Within the UK steel industry it is believed that continued growth of steel usage in the construction sector would be facilitated by offering multi-material solutions which combine the benefits of several materials (i.e. precoated sheet steels, aluminium alloy, glass, timber and mortar). A review of both traditional and novel joining processes that are currently used to assemble sheet steels indicated that adhesive and sealant bonding has the most potential for joining both multi-metal and fundamentally dissimilar material combinations. Consequently, the aim of this Eng.Doc research project was to establish the robustness of bonded joints, test methodology procedures, and design guidelines for multi-material combinations. The results obtained in this study have shown that a range of structural adhesive and sealant systems exist, capable of producing strong and durable multimaterial joints. The highest levels of durability were obtained with organic coated steel - aluminium or glass joints which restricted the ingress of water to the exposed edges of the bond line. With precoated steel - timber or mortar joints, bond strength was adversely affected by rapid water penetration through the porous timber and mortar adherends promoting joint failure. Furthermore, it was noted that the failure loads obtained with adhesive bonded steel - timber and glass joints were higher than anticipated. This was attributed to a change in the stress distribution, whereby a greater stress concentration was located at the overlap end of the higher modulus steel adherend. Guidelines were developed describing best practice joining techniques for adhesive bonding steel - brittle materials (i.e. glass and mortar), and the requirements for further work outlined to facilitate follow up projects. E-Thesis Materials science. 31 12 2008 2008-12-31 COLLEGE NANME Engineering COLLEGE CODE Swansea University Doctoral EngD 2018-08-02T16:24:29.7589956 2018-08-02T16:24:29.7589956 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised David Thomson NULL 1 0042587-02082018162506.pdf 10805345.pdf 2018-08-02T16:25:06.2170000 Output 25674351 application/pdf E-Thesis true 2018-08-02T16:25:06.2170000 false
title The joining of precoated sheet steels to dissimilar contruction materials.
spellingShingle The joining of precoated sheet steels to dissimilar contruction materials.
David Thomson
title_short The joining of precoated sheet steels to dissimilar contruction materials.
title_full The joining of precoated sheet steels to dissimilar contruction materials.
title_fullStr The joining of precoated sheet steels to dissimilar contruction materials.
title_full_unstemmed The joining of precoated sheet steels to dissimilar contruction materials.
title_sort The joining of precoated sheet steels to dissimilar contruction materials.
author_id_str_mv ed08601cede5e3e05d200f61038cd603
author_id_fullname_str_mv ed08601cede5e3e05d200f61038cd603_***_David Thomson
author David Thomson
author2 David Thomson
format E-Thesis
publishDate 2008
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description Within the UK steel industry it is believed that continued growth of steel usage in the construction sector would be facilitated by offering multi-material solutions which combine the benefits of several materials (i.e. precoated sheet steels, aluminium alloy, glass, timber and mortar). A review of both traditional and novel joining processes that are currently used to assemble sheet steels indicated that adhesive and sealant bonding has the most potential for joining both multi-metal and fundamentally dissimilar material combinations. Consequently, the aim of this Eng.Doc research project was to establish the robustness of bonded joints, test methodology procedures, and design guidelines for multi-material combinations. The results obtained in this study have shown that a range of structural adhesive and sealant systems exist, capable of producing strong and durable multimaterial joints. The highest levels of durability were obtained with organic coated steel - aluminium or glass joints which restricted the ingress of water to the exposed edges of the bond line. With precoated steel - timber or mortar joints, bond strength was adversely affected by rapid water penetration through the porous timber and mortar adherends promoting joint failure. Furthermore, it was noted that the failure loads obtained with adhesive bonded steel - timber and glass joints were higher than anticipated. This was attributed to a change in the stress distribution, whereby a greater stress concentration was located at the overlap end of the higher modulus steel adherend. Guidelines were developed describing best practice joining techniques for adhesive bonding steel - brittle materials (i.e. glass and mortar), and the requirements for further work outlined to facilitate follow up projects.
published_date 2008-12-31T03:53:15Z
_version_ 1763752642622783488
score 11.016235

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