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Dissertations / Theses on the topic 'Through-thickness'

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Published: 4 June 2021

Last updated: 25 July 2025

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1

Mespoulet, Stephane. "Through-thickness test methods for laminated composite materials." Thesis, Imperial College London, 1998. http://hdl.handle.net/10044/1/7314.

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2

Bianchi, Francesco. "Numerical modelling of through-thickness reinforced structural joints." Thesis, Cranfield University, 2012. http://dspace.lib.cranfield.ac.uk/handle/1826/7992.

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The main objective of this research study was to develop numerical models to analyse the mechanical and fracture properties of through-thickness reinforced (TTR) structural joints. The development of numerical tools was mainly based on the finite element (FE) method. A multi-scale approach was used: the bridging characteristics of a single reinforcement was studied at micromechanical level by simulating the single-pin response loaded either in mode-I or in mode-II. The force-displacement curve (bridging law) of the pin was used to define the constitutive law of cohesive elements to be used in

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3

Taniguchi, Shinro. "Measurement of the through-thickness strength of composites." Thesis, University of Oxford, 1998. http://ora.ox.ac.uk/objects/uuid:441ed7e2-72ed-4c2e-b0d2-066b5419b56e.

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This research deals with the mechanical characterisation of thick composite laminates in the through-thickness direction. Three independent glass fibre/epoxy laminate configurations, namely cross, quasi-isotropic, and woven, plies were investigated. Six specimen configurations, of which two were developed herein, were employed in order to determine the strength behaviour of these three laminate configurations when subjected to interlaminar shear and interlaminar tensile stresses in isolation and in combination. The stress and strain distributions were estimated using the ABAQUS FEA package. Th

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4

Smith, Carmen Alexis. "Micromechanics of the through-thickness deformation of paperboard." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9426.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.<br>Includes bibliographical references (p. 171-172).<br>An experimental investigation of the behavior of paperboard has been performed, focusing on the identification of the mechanisms of through-thickness deformation. Experiments have been conducted at the microscopic and macroscopic levels, the difference between the two being the length scale. Experiments at the microscopic level were performed in a scanning electron microscope, allowing concurrent viewing of the deformation as it took place with ac

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5

Gan, Khong Wui. "Effect of high through-thickness compression on composite failure." Thesis, University of Bristol, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616885.

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As composite materials are now used in load conditions with increasing complexity and thickness, all the three-dimensional stress components become important and should be taken into account when predicting failures. In particular, the through-thickness stresses can play a crucial role in determining the in-plane behaviours and strength of a composite, laminate. The work presented in this PhD thesis aims to investigate failures due to complex stress fields at the root of a composite component in a dovetail assembly, where highly concentrated through-thickness stresses as well as in-plane tensi

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6

Grassi, Marcello. "Numerical modelling of composite laminates with through-thickness-reinforcements." Thesis, Cranfield University, 2004. http://hdl.handle.net/1826/2971.

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The main objective of the present research study was to develop numerical models to investigate the mechanical properties and effectiveness of z-fibre reinforced laminates. A survey of relevant literature on through-thickness reinforcements (TTR) was undertaken and z-fibre pinning was chosen as the main topic of study. The development of numerical tools was mainly based on the finite element (FE) method and was carried out at different model scale levels. At a micro-mechanical level of analysis, two models were presented. Firstly a unit cell FE model based on the actual geometric configuration

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7

Caspe, Russell Jon. "Through-thickness melding of advanced carbon fibre reinforced polymers." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/throughthickness-melding-of-advanced-carbon-fibre-reinforced-polymers(43780bb2-f455-4350-af4c-bd54210b5401).html.

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Melding is a novel process which offers a promising route to creating seamless bonds, by partially curing two laminates in a controlled manner using a Quickstep chamber and subsequently co-curing them. Previous research has focused on melding lap joints in the x-y plane of a composite, whereas this study investigates through-thickness melding, or melding in the z-plane of a composite. In this process, two composite stacks were exposed to heat from one side and actively cooled on the other through the z-axis. The two semi-cured parts were then co-cured creating a monolithic part with a seamless

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8

Rashid, Adnan. "Investigation of through-thickness assembly stresses in composite wing spars." Thesis, University of Bristol, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.722699.

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9

Cui, Guiyong. "Experimental study of the through-thickness strength of laminated composites." Thesis, University of Oxford, 1994. http://ora.ox.ac.uk/objects/uuid:80258f41-5358-447c-8047-0769c93f062c.

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Complicated structures made of fibre reinforced laminates will suffer the failure of delamination which is the main through-thickness failure mode and is usually caused by the combined through-thickness stress state. Three tests, namely the oblique test, the waisted C-specimen test and the notched beam test, have been developed to reveal the failure activities under the combined stress state of in-plane normal stress, through-thickness normal stress and interlaminar shear, and, as a part of the big project, to establish a 3-D failure map in the coordinates of the three stress components. All t

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10

Zhang, Bing. "Mechanical performance and self-sensing for through-thickness reinforced composites." Thesis, University of Bristol, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.702728.

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This dissertation is focused on predicting the mechanical performance and damage self-sensing capability of composite laminates reinforced through the thickness with carbon Z-pins. A micro-mechanical finite element (FE) modelling strategy is developed for the analysis of the through-thickness reinforcement performance of Z-pins. This three-dimensional modelling approach is capable of describing the micro-structural features of Z-pinned laminates based on a versatile ply-level mesh. These features include the actual laminate stacking sequence, the presence of resin pockets surrounding the Z-pin

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11

Saldaeva, Elena. "Through thickness air permeability and thermal conductivity analysis for textile materials." Thesis, University of Nottingham, 2010. http://eprints.nottingham.ac.uk/13140/.

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Woven fabrics have found enormous application in our daily life and in industry because of their flexibility, strength and permeability. The aim of this work was to create a general model for through thickness air permeability and thermal conductivity for different types of textile fabrics because of their applications in industries and everyday life. An analytical model to predict through thickness air permeability was developed. The objective was to create a model which will take into consideration the two primary mechanisms of air flow in fabrics: through the gaps between yarns and through

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12

Ekmekjian, Nazareth (Nazareth Vahe). "Architecture sandwiched : tuning anisotropy through variable thickness and hetereogeneous laminar assemblies." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99272.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Architecture, 2015.<br>Cataloged from PDF version of thesis. Page 61 blank.<br>Includes bibliographical references (pages 58-59).<br>Much of architecture's earliest material palettes and construction methods are often referred to today as legacy materials - those primarily consisting of various types of stone and masonry construction. While these materials are often conceptually thought of as being solid, monolithic, and even homogeneous, in actuality they rely on logics of assembly more akin to contemporary sandwich structures

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13

Gkaliamoutsas, Pantelis. "Modeling fused filament fabrication machine height accuracy through layer thickness variation." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/113766.

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Thesis: M. Eng. in Advanced Manufacturing and Design, Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 85-88).<br>This thesis addresses the modeling and prediction of total height error of a 3D printed part using a layer-by-layer approach. Layer to layer thickness error is modeled across the build height of Polyactic acid (PLA) and Acrylonitrile butadiene styrene (ABS) parts. A height error compensation model is then formulated and applied at a G-code level to drive the mach

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14

Thompson, Luke Francis. "Through-thickness compression testing and theory of carbon fibre composite materials." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/throughthickness-compression-testing-and-theory-of-carbon-fibre-composite-materials(02ad7cfa-b779-4e69-9361-3c5bb44c6114).html.

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This study investigates the through-thickness behaviour of carbon/epoxy laminates. A through-thickness compression test regime was conducted utilising three specimen designs, which are waisted, hollow cylindrical and cubic specimens. An assessment and comparison of each specimen is given regarding their advantages and disadvantages in characterising the through-thickness response of [+45/-45/90/0]s quasi-isotropic AS4/8552 carbon/epoxy laminates. A finite element (FE) study of the three specimens is presented which results in specimen geometries that provided a macroscopically uniform stress r

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15

Blandford, Peter. "Through-thickness inhomogeneity of steel-sheet texture and its affect on material properties." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59295.

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The work of this thesis centres around two related themes, the first being the characterization of the through-thickness inhomogeneity found in rolled sheet at various stages in its production. The second is involved with attempting to understand how and to what extent the existing inhomogeneity affects the correlations with the anisotropies of some physical or mechanical properties. For this, the inhomogeneity of six steels were measured.<br>Three were specimens removed from the sheet during the early processing of conventional grain-oriented ferrosilicon steel, one sample taken after the fir

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16

Henry, B. S. "Constraint based fracture assessment of through-thickness cracks in a bridge girder structure." Thesis, Swansea University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637263.

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The Christchurch bridge is a lightweight and readily transportable utility which can be rapidly erected to cover a range of emergency bridging requirements. The bridge is manufactured from a weldable high tensile aluminium alloy. During large scale laboratory fatigue testing, cracks were detected in a tension cord of an I-section bridge girder where damage is most critical. The bridge girder sustained much longer critical crack lengths before failure than estimated assuming linear elastic fracture mechanics conditions and using fracture toughness data obtained from highly constrained geometrie

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17

Dadfar, Humaira. "The influence of variable B horizon thickness (tonguing) on solute transport through undisturbed soil columns." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq24456.pdf.

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18

Verghese, Kandathil Eapen. "Effects of fiber architecture and through-the-thickness stitching on permeability and compaction of textile preforms." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-08292008-063741/.

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19

Harman, David Edward. "An economic evaluation of the robotic tufting process considering the application of a novel composite wing rib post." Thesis, University of Plymouth, 2013. http://hdl.handle.net/10026.1/10847.

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This thesis aims to establish a greater understanding of the effects of the single-sided robotic tufting process on component manufacturing costs and weight, and subsequently determine whether potential economic benefits can be realised through its implementation. To complete this assessment, the study uses the novel composite rib post application of the Next Generation Composite Wing (NGCW) project as an example case, investigating the component’s manufacturing cost, performance and weight relative to those of a non-tufted rib post with the same initial fabric layup, and a prepreg rib post wi

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20

Etzberger, Feistauer Eduardo [Verfasser], and Sergio [Akademischer Betreuer] Amancio. "Ultrasonic joining of through-the-thickness reinforced metal-composite hybrid structures / Eduardo Etzberger Feistauer ; Betreuer: Sergio Amancio." Hamburg : Universitätsbibliothek der Technischen Universität Hamburg-Harburg, 2019. http://d-nb.info/1175660892/34.

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21

Mert, Emel. "Effect of air gap thickness and contact area on heat transfer through garments in real life situation." Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH9978.

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Le corps humain et les vêtements sont toujours en interaction directe avec l’environnement, le corps devant maintenir sa température à environ 37°C. Les transferts de chaleur sont affectés non seulement par les propriétés de l’étoffe constitutives du vêtement, mais également par l’épaisseur de la couche d’air entre le corps et le vêtement. Les propriétés thermiques de la couche d’air dépendent de son étendue, influencée par les courbures du corps humain, des propriétés mécaniques de l’étoffe et de la forme du vêtement. Il est donc nécessaire de déterminer la forme 3D du corps et la répartition

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22

Zhang, Xuan ZHANG. "Polymer Films With Enhanced Through Thickness Optical Transmission and Compression Modulus with Electric Field Aligned Glass Fiber/Bubbles." University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1463961142.

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23

Chipman, Christopher L. "Maximization of Hydraulic Flow through Small Flexible Polymer Tubes by the Optimization of Tubing Stiffness and Wall Thickness." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3728.

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As illness becomes increasingly more common in the United States and across the globe, the need for better and faster medical treatment is greater than ever. The purpose of this work is to evaluate advanced polymers and polymer composites that will provide for increased fluid flow while maintaining outer dimensional, stiffness, and burst resistance characteristics when compared to a currently used material. A polymer configuration consisting of a proprietary formulation that has a durometer approximately 10% higher than the current material with an outer wall thickness of approximately .020" p

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24

Rottoli, Matteo <1979&gt. "TAMIS-flap technique: full-thickness advancement rectal flap for high perianal fistulae performed through transanal minimally invasive surgery." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amsdottorato.unibo.it/8817/1/rottoli_matteo_tesi.pdf.

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Introduction The formation of an advancement rectal flap could be technically demanding in the presence of high perianal of rectovaginal fistula, and the outcomes could be frustrated by inadequate view, bleeding and a poor exposure through the standard transanal approach. The application of the transanal minimally invasive surgery (TAMIS) to the advancement rectal flap procedure could overcome these difficulties. Technique In lithotomy position, a partial fistulectomy and a curette of the internal orifice were performed. The internal opening was closed on the anal sphincter plane. The di

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25

Zulu, Andrew Wisdom. "Thick Composite Properties and Testing Methods." Thesis, KTH, Lättkonstruktioner, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-243885.

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In most application to date reinforced carbon fiber composites have been used in relatively smaller thickness, less than 10mm thick and essentially for carrying in-plane loads. As a result, design and testing procedures were developed which reflected the need to understand the in-plane response of the material. recently, engineers and designers have begun to use reinforced carbon fiber composites in thicker sections, where an understanding of the through-thickness response is of para-mount importance in designing reliable structures, particularly where the through-thickness strength has a cont

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26

McDermott, Patrick M. "Development and implementation of a shell element with pressure variation through the thickness and void growth and nucleation effects." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1999. http://handle.dtic.mil/100.2/ADA369167.

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Thesis (Degree of Mechanical Engineering) Naval Postgraduate School, September 1999.<br>"September 1999". Thesis advisor(s): Young W. Kwon. Includes bibliographical references (p. 107-109). Also Available online.

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27

Harris, Jonathan. "A preliminary study upon the use of novel shaped fibres for the through thickness reinforcement of continuous fibre reinforced plastics." Thesis, University of Bristol, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428511.

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28

Chang, Paul, and mrpc@tpg com au. "The Mechanical Properties and Failure Mechanisms of Z-Pinned Composites." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20070111.145714.

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Z-pinning is a through-thickness reinforcement technology for polymer composite materials that has been developed and commercialised over the past fifteen years. The through-thickness reinforcement of composites with thin metallic or fibrous pins aids in suppressing delamination, improving impact damage tolerance and increasing joint strength. Z-pins are applied to the composite part during its manufacture. Pins are embedded within sheets of foam and placed over the unconsolidated part. Subsequently, the foam is compacted and the pins transferred into the part, which is usually an uncured pr

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29

Alali, M. "Through-thickness microstructure and mechanical properties of electron beam similar welded AISI 316L stainless steel and dissimilar welded AISI 316L/Ti6Al4V." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/18019/.

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Through thickness microstructure and mechanical properties of defect-free electron beam welded 20 mm thick AISI 316L austenitic stainless steel has been investigated as a function of beam power. The weld microstructure is characterised by a columnar and equiaxed dendritic ferrite in an austenite matrix. The dendritic structure was finer at the bottom of the weld zone. A microstructural boundary called “Parting” was seen along the weld centreline. Tensile tests, using a digital image correlation technique, demonstrated that the highest strain was concentrated in the fusion zone. The bottom sect

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30

Pope, P. James (Peter James). "Structural performance of a hybrid sandwich submersible pressure hull : stress and stability analysis of a stiffened cylindrical shell including through-thickness shear." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/37002.

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31

Sidlipura, Ravi Kumar Sujith Kumar. "Multi-modal and multiscale image analysis work flows for characterizing through-thickness impregnation of fiber reinforced composites manufactured by simplified CRTM process." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Lille Douai, 2024. http://www.theses.fr/2024MTLD0010.

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Cette thèse présente une étude expérimentale pour améliorer le moulage par compression et transfert de résine thermoplastique (CRTM), axée sur l'efficacité industrielle, la durabilité et la recyclabilité, conformément aux objectifs de développement durable pour l’industrie, l’innovation et l’action climatique. En abordant la complexité de l'écoulement de la résine à plusieurs échelles dans le CRTM, cette recherche étudie l'écoulement transversal (à travers l’épaisseur) et la porosité induite par le processus à l'échelle méso des faisceaux de fibres de verre afin d'améliorer l'uniformité de l'i

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Lombetti, D. M. "Tufting of complex composite structures." Thesis, Cranfield University, 2015. http://dspace.lib.cranfield.ac.uk/handle/1826/11076.

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This study focuses on the effect of tufting on the mechanical and electrical properties of carbon composites using a variety of tuft materials, such as aramid, steel and copper. Several configurations were investigated based on a case study, involving the reinforcement of stiffener-to-skin interfaces of a tail cone. The effect of tuft and base composite material, tufting depth and inclination on the delamination resistance in mode I was evaluated, the associated bridging laws were determined and the failure mechanisms were identified. A simplified superposition model of the delamination respon

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田中, 啓介, Keisuke TANAKA, 義明秋庭 та ін. "防振ゴム材料における疲労き裂進展挙動へのJ 積分の適用". 日本機械学会, 2003. http://hdl.handle.net/2237/9154.

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34

Smith, Jr Richard Lee. "ANALYSIS OF THICKNESS VARIATIONS OF THE AUX VASES FORMATION IN WHITE COUNTY, ILLINOIS THROUGH APPLICATION OF GEOPHYSICAL WELL LOGS AND 3-D SEISMIC REFLECTION ATTRIBUTES." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1731.

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A two square mile (5.2 square kilometer) 3-D seismic reflection survey was completed in northeastern White County, Illinois for petroleum exploration in January of 2008. Well log data was made available from Royal Drilling and Producing, who contracted the seismic survey, and additional data was retrieved from the ILOIL database. Raster (TIFF format) images that were available for nearly every well location in the study area were calibrated for depth and stratigraphic tops picked. The purpose of this study is to analyze the Aux Vases formation using 3-D seismic reflection data and attribute a

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35

Barrientos, Nava Juan Rene 1972. "Resistência ao micro-cisalhamento de cimentos resinosos fotoativados através de diferentes espessuras de cerâmica = Micro-shear bond strength of resin cements photoactivated through different ceramic thickness." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288537.

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Orientador: Rafael Leonardo Xediek Consani<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba<br>Made available in DSpace on 2018-08-27T14:20:39Z (GMT). No. of bitstreams: 1 BarrientosNava_JuanRene_M.pdf: 979069 bytes, checksum: 74108d8d78e414edaddbf2d5747d4ee6 (MD5) Previous issue date: 2015<br>Resumo: O objetivo neste estudo foi avaliar a resistência da união ao cisalhamento de cimentos resinosos fotoativados através de diferentes espessuras de cerâmica e o modo de fratura. Foram utilizados os cimentos resinosos RelyX U200 (3M ESPE) e Vari

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Feng, Chi. "SOFT X-RAY FORMATION MEASUREMENT OF LOW DENSITY MATERIALS AND COMPRESSIVE RESPONSE CHARACTERIZATION." Miami University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=miami1350679879.

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Arun, Sutham. "Finite element modelling of fracture & damage in austenitic stainless steel in nuclear power plant." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/finite-element-modelling-of-fracture-and-damage-in-austenitic-stainless-steel-in-nuclear-power-plant(031e5ceb-b3b5-4499-8094-dbe362e27ff7).html.

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The level of residual stresses in welded components is known to have a significant influence on their failure behaviour. It is, therefore, necessary to understand the combined effect of mechanical loading and residual stresses on the ductile fracture behaviour of these structures in order to provide the accurate structural safety assessment. Recently, STYLE (Structural integrity for lifetime management-non-RPV component) performed a large scale bending test on a welded steel pipe containing a circumferential through-thickness crack (the MU2 test). The purpose of this test is to study the impac

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Joesbury, Adam Michael. "New approaches to composite metal joining." Thesis, Cranfield University, 2015. http://dspace.lib.cranfield.ac.uk/handle/1826/10009.

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This thesis explores new methods for achieving load-carrying joints between the dissimilar materials of continuous fibre reinforced polymer matrix composites and structural metals. The new composite-to-metal joining methods investigated in this work exploit the metal-to-metal joining techniques of arc micro-welding, resistance spot welding, and metal filler brazing, to form novel micro-architectured metal adherends that can be used for enhanced composite-to-metal joining. Through a combination of equipment instrumentation and metallographic inspection of fabricated prototype joints, understand

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Martins, Alan. "Analysis of damage mechanisms in composite structures reinforced by tufting." Thesis, Compiègne, 2018. http://www.theses.fr/2018COMP2443/document.

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Cette étude portait sur l’évaluation des performances mécaniques et des mécanismes de défaillance des composites cousus dans différentes conditions de chargement. Des plaques stratifiées et des raidisseurs renforcés par tufting ont été fabriqués avec différents paramètres de couture afin d'évaluer leur effet sur les propriétés des composites. L'investigation a été assistée par une caractérisation multi-instrumentée pendant les tests. Les plaques cousues soumises à des tests de cisaillement à poutre courte sont utilisées dans l'analyse du comportement de la densité et de l'angle de couture dans

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Lin, Weiwei, Kai Chen, Shufeng Zhang, and C. L. Chien. "Enhancement of Thermally Injected Spin Current through an Antiferromagnetic Insulator." AMER PHYSICAL SOC, 2016. http://hdl.handle.net/10150/614754.

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We report a large enhancement of thermally injected spin current in normal metal (NM)/antiferromagnet (AF)/yttrium iron garnet (YIG), where a thin AF insulating layer of NiO or CoO can enhance the spin current from YIG to a NM by up to a factor of 10. The spin current enhancement in NM/AF/YIG, with a pronounced maximum near the Neel temperature of the thin AF layer, has been found to scale linearly with the spin-mixing conductance at the NM/YIG interface for NM = 3d, 4d, and 5d metals. Calculations of spin current enhancement and spin mixing conductance are qualitatively consistent with the ex

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Tsivoulas, Dimitrios. "Effects of combined Zr and Mn additions on the microstructure and properties of AA2198 sheet." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/effects-of-combined-zr-and-mn-additions-on-the-microstructure-and-properties-of-aa2198-sheet(6bb2c9db-7584-464b-8064-bab0cc2d397c).html.

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The effect of individual and combined zirconium and manganese additions have been compared for an AA2198 6 mm thick sheet in T351 temper regarding their influence primarily on recrystallisation resistance and secondly on fracture toughness and overageing resistance. A complete characterisation of the dispersoid distributions was carried out for a deeper understanding of the effects of the Al3Zr and Al20Cu2Mn3 particles, involving studying their formation from the as-cast and homogenised stage.The most important finding in this work was the lower recrystallisation resistance in the alloy contai

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42

Cozzens, Paul. "A Study on the Thickness of Plate Washers for Anchor Rod Applications." University of Cincinnati / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1627665709614063.

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Atilgan, Ahmet Koray. "A Study Of Laminar Forced Film Condensation Of Vapor Flowing In Cross-flow Direction Through The Annular Space Between Two Concentric Cylinders." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607714/index.pdf.

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In this study laminar forced film condensation of vapor flowing in cross-flow direction through the annular space between two concentric cylinders was investigated numerically. To achieve this, governing equations of the vapor and the condensate flow in cross-flow direction between two concentric cylinders were developed. After obtaining the equations in integral forms by using the finite difference technique the vapor boundary layer thicknesses on the inner and outer cylinders and the condensate layer thickness was obtained as

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Guillotin, Alban. "Étude de la rugosité de surface induite par la déformation plastique de tôles minces en alliage d'aluminium AA6016." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 2010. http://tel.archives-ouvertes.fr/tel-00716025.

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Dans le cadre d'un programme de recherche visant à l'allègement de la structure des véhicules, l'origine de lignage dans des tôles en aluminium AA6016 a été étudiée. Ce phénomène, qui peut apparaître à la suite d'une déformation plastique, est apparenté à de la rugosité de surface alignée dans la direction de laminage (DL). Sa présence est néfaste à une bonne finition de surface, et son intensité est appréciée visuellement par les fabricants.Une méthode de quantification rationnelle a été développée. La caractérisation de la distribution morphologique des motifs de rugosité a été rendue possib

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Katendra, Gaurav. "Prediction of coating thickness through thermal analysis." Thesis, 2013. http://ethesis.nitrkl.ac.in/5386/1/211ME3172.pdf.

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An attempt has been made to develop a methodology to predict the uniform or non-uniform thickness of a coating material on a homogeneous solid material. At first the effects of variation of (uniform and non-uniform) coating thickness, on the heat transfer (by conduction) through the coated body have been rigorously investigated. A solid square steel block coated with copper (of various coating thicknesses) has been considered as the sample problem. A constant heat flux has been maintained at the bottom side where, the other three sides kept at constant temperature. The temperature profile buil

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Mansfield, Byron Allen. "Analysis of Finite Length, Orthotropic Composite Cylinders Including Through-Thickness Shear Effects." Thesis, 2007. http://hdl.handle.net/10539/2071.

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Student Number : 0001361N - MSc(Eng) dissertation - School of Mechanical, Industrial and Aeronautical Engineering - Faculty of Engineering and the Built Environment<br>Thick composite cylinders are important structural elements which cannot be analysed by traditional techniques due to through-thickness effects. This work presents analyses for thick composite tubes of finite length including through-thickness shear. A numerical thermal analysis is implemented for the determination of the transient through-thickness behaviour of tubes. A me- chanical analysis, based on the Rayleigh-Ritz

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Liu, Yi-Hong, and 劉奕宏. "Optical Constant and Thickness Measurements through Multi-wavelength Interferometry." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/88318613106113659640.

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碩士<br>國立中央大學<br>光電科學研究所<br>98<br>In this thesis, there were two major parts, software and the hardware parts, for measuring the optical constants and thickness of the thin film. For the software, we used novel Genetic Algorithm to design our program. For the hardware, we proposed a polarization phase shifting interferometer based on Twyman-Green interferometer structure. In our arrangement, the low coherence light source is composed of a mercury lamp, which is a polychromatic light source and covering the visible spectral range, and a narrow band pass filter to create a Gaussian power spectral

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Wang, Ying-ching, and 王瀅晴. "Through-Thickness Behavior of High Strength Thick Steel Plate." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/84513370153799518356.

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碩士<br>國立臺灣科技大學<br>營建工程系<br>97<br>Structural steel usually possesses various chemistries. These chemistries may affect the mechanical property of the steel, degenerate the weldablity and the structural performance. During the rolling process of the steel plate, the non-metallic magnesium sulfide (MnS) inclusions of the steel are flattened. These flattened inclusions may induce the lamellar tearing when the steel plate is subjected to the out-of-plane force. The possibility of lamellar tearing greatly increased if thick plate is used. This reported research examined the through thickness behavio

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Liew, Kah-Khan, and 劉家勤. "Propagation Characteristics of Thickness-Through-Cracks in Irregular Stress Distribution Fields." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/24191834066413571395.

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碩士<br>國立成功大學<br>造船及船舶機械工程學系<br>90<br>ABSTRACT The propagating characteristics of thickness-through-cracks in irregular stress distribution fields are discussed in the present paper. Three kinds of specimen having different size of defects on the both surfaces or steel sheets are designed (hereafter referred or as “defective specimen”) to produce irregular stress distribution fields. Using defective specimens and common CCT specimens (referred to as “flat specimen”) fatigue crack propagating tests were carried out. During the tests, crack growth fates and closure load were measured, and t

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鞠, 暁臣, and Xiaochen Ju. "Study on Propagation of Through-thickness Fatigue Crack Subjected to Out-of-plane Bending." Thesis, 2012. http://hdl.handle.net/2237/17334.

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