An investigation into the tensile behaviour of self-bonded cellulosic fibre networks
Başlık çevirisi mevcut değil.
- Tez No: 508739
- Danışmanlar: Prof. WILLIAM W. SAMPSON
- Tez Türü: Doktora
- Konular: Metalurji Mühendisliği, Metallurgical Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2017
- Dil: İngilizce
- Üniversite: The University of Manchester
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 213
Özet
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Özet (Çeviri)
Abstract of Thesis submitted by Merve Engin for the degree of Doctor of philosophy and entitled \An investigation into the tensile behaviour of self-bonded cellulosic bre networks“. June 2017 The overriding purposes of this study were to determine the grammage dependency of structural and tensile characteristics of paper and to estimate the shear bond strength per unit area of paper. To accomplish these goals, an investigation into the close relationship between structural and mechanical characteristics of self-bonded bre networks were carried out. The microstructure parameters of handsheets were evaluated by conducting X-ray tomography experiments. Particularly, the relationship between thickness and grammage of handsheets was further examined. The test results provided that porosity is a grammage-dependent structural parameter. The porosity pro- le and pore height distributions of handsheets were analysed by this approach. In addition, the e ect of surface regions was discussed within this context. These results indicated that the role of the surface pore loses its importance along the thickness (z ) direction of paper as the paper grammage is increased. The tensile results veri ed that at a constant density, the mechanism of a sheet failure does indeed depend on sheet grammage. A wide range of relative bonded areas (RBA) was investigated including the critical relative bonded area (RBAcr). New estimations of critical bonding degree (CDB) were provided by failure transitions. The factors a ecting this failure transition were presented in this thesis. These failure mechanisms within paper network were identi ed and analysed by high-speed video techniques. 13 Declaration No portion of the work referred to in the thesis has been submitted in support of an application for another degree or quali cation of this or any other university or other institute of learning. Copyright Statement (i) The author of this thesis (including any appendices and/or schedules to this thesis) owns certain copyright or related rights in it (the \Copyright ”) and s/he has given The University of Manchester certain rights to use such Copyright, including for administrative purposes. (ii) Copies of this thesis, either in full or in extracts and whether in hard or electronic copy, may be made only in accordance with the Copyright, Designs and Patents Act 1988 (as amended) and regulations issued under it or, where appropriate, in accordance with licensing agreements which the University has from time to time. This page must form part of any such copies made. (iii) The ownership of certain Copyright, patents, designs, trademarks and other intellectual property (the \Intellectual Property“) and any reproductions of copyright works in the thesis, for example graphs and tables (\Reproductions ”), which may be described in this thesis, may not be owned by the author and may be owned by third parties. Such Intellectual Property and Reproductions cannot and must not be made available for use without the prior written permission of the owner(s) of the relevant Intellectual Property and/or Reproductions. (iv) Further information on the conditions under which disclosure, publication and commercialisation of this thesis, the Copyright and any Intellectual property and/or Reproductions described in it may take place is available in the University IP Policy (see http://documents.manchester.ac.uk/ display.aspx?DocID=24420), in any relevant Thesis restriction declarations deposited in the University Library, The University Librarys regulations (see http://www.library.manchester.ac.uk/about/regulations/) and in The Universitys policy on Presentation of Theses.
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