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Dissertations / Theses on the topic 'Test specimens'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Bois-Grossiant, Philippe Carleton University Dissertation Engineering Mechanical and Aerospace. "Boundary element fracture mechanics analysis of sandwich test specimens." Ottawa, 1994.

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2

JAIN, RAHUL LALIT. "Effective Area and Effective Volume Calculations for Ceramic Test Specimens." Cleveland State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=csu1218123485.

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3

Reynolds, Michael Scott. "A Relationship Between the Strengths of Type N Cubic Mortar Specimens and In-Situ Mortar." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7572.

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The compressive strength of mortar is typically determined using the American Societyfor Testing and Materials (ASTM) standard method using 2 inch cubes which are compressed tillfailure. There is however a disparity between the compressive strengths of mortar cubes, and insitumortar. This disparity is a result of the differences in thickness, aspect ratio, curingconditions, water content, and confinement between mortar cubes and mortar joints. While thesedifferences lead to mortar joints being stronger than mortar cubes, a relationship between theirstrengths is desired.Two less-common mortar s

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Moffett, Theodore James. "Relationship Between Compressive Strength of Different Shape and Thickness Specimens of Type S Mortar." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/8811.

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Mortar is the cementitious binding material placed between masonry blocks to create a composite system. The American Society of Testing and Materials (ASTM), along with other organizations, have established the testing of prismatic mortar specimens for evaluating mechanical properties, like compressive strength. Mortar joints, however, possess vastly different characteristics compared to prismatic specimens, especially in terms of geometry and water content. These differences prevent a direct comparison of compressive strength between prismatic specimens and actual mortar joints in the assembl

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5

Ranganathan, Kannan. "A simulation model for stress measurements in notched test specimens by x-ray diffraction." Thesis, Virginia Tech, 1987. http://hdl.handle.net/10919/45887.

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<p>An analytical model was developed to simulate the stress state of notched tensile specimens. Actual experiments are being carried out by other investigators to study the relaxation of residual stresses in specimens containing stress raisers. In the present work, the stress state developed in notched tensile specimens was assessed by determining the response of the stress state in the form of x-ray line profiles; this is useful in the understanding and measurement of effects due to such stress states obtained in actual experiments. The theoretical relationship between the stress gradient

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6

Heil, Joshua W. "Methods of Processing Kenaf Chopped Strand Mats for Manufacturing Test Specimens and Composite Structures." DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4376.

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Bio-composites are increasing in demand due to governmental incentives across the globe for both environmental and human health reasons. The ideal bio-composite is renewable, recyclable, available, and non-toxic. To properly engineer bio-composite products, the physical properties of the fiber as well as fiber/matrix interactions must be known. The problem lies in the fact that many suitable natural fibers are not currently available in a material form that may be easily worked with. This research investigates methods to process raw kenaf (hibiscus cannabinus) on a scale that allows researcher

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7

Stehn, Lars. "Fracture toughness of sea ice : development of a test system based on shevron notched specimens." Licentiate thesis, Luleå tekniska universitet, Byggkonstruktion och -produktion, 1990. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18782.

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8

Alkilicgil, Cigdem. "Development Of A New Method For Mode I Fracture Toughness Test On Disc Type Rock Specimens." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607513/index.pdf.

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A new testing method was introduced and developed to determine Mode I fracture toughness of disc type rock specimens. The new method was named as Straight Notched Disc Bending and it uses disc specimens under three-point bending. 3D Numerical modeling was carried out with a finite element program ABAQUS to find stress intensity factors for both well-known Semi-circular Bending specimen models and Straight Notched Disc Bending specimen models for varying disc geometries. Both specimen types included notches where a crack front is introduced at the tip of the notch to compute the stress intensit

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9

Kohlman, Lee W. "Evaluation of Test Methods for Triaxial Braid Composites and the Development of a Large Multiaxial Test Frame for Validation Using Braided Tube Specimens." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1333047848.

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10

Baldassarri, Marco. "Measurement of LSP-induced residual stresses and fatigue life on thin-walled aluminium alloys specimens." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/7996/.

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This thesis work encloses activities carried out in the Laser Center of the Polytechnic University of Madrid and the laboratories of the University of Bologna in Forlì. This thesis focuses on the superficial mechanical treatment for metallic materials called Laser Shock Peening (LSP). This process is a surface enhancement treatment which induces a significant layer of beneficial compressive residual stresses underneath the surface of metal components in order to improve the detrimental effects of the crack growth behavior rate in it. The innovation aspect of this work is the LSP application t

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11

Chudoba, Rostislav, Martin Konrad, Markus Schleser, Konstantin Meskouris, and Uwe Reisgen. "Parametric study of tensile response of TRC specimens reinforced with epoxy-penetrated multi-filament yarns." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1244043793029-57511.

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The paper presents a meso-scopic modeling framework for the simulation of three-phase composite consisting of a brittle cementitious matrix and reinforcing AR-glass yarns impregnated with epoxy resin. The construction of the model is closely related to the experimental program covering both the meso-scale test (yarn tensile test and double sided pull-out test) and the macro-scale test in the form of tensile test on the textile reinforced concrete specimen. The predictions obtained using the model are validated using a-posteriori performed experiments.

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12

Shelke, Jonny M. "Influence of stress state dependency on ductile fracture modeling in standard test specimens using LS-dyna explicit analysis." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439301655.

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13

Canterle, Joseane Ortiz Breitenbach. "Avaliação da influência do entalhe em corpos de prova ensaiados a baixa taxa de deformação em meio etanol." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/60737.

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O aumento de demanda por combustíveis menos poluentes e de fontes renováveis faz com que o Etanol se destaque como uma alternativa as fontes convencionais de energia. O crescente aumento no consumo deste produto, para os próximos anos, exigirá meios de transporte e estocagem eficientes e seguros, desde os diversos produtores até os terminais de distribuição. O transporte por dutos é, sem dúvida, a forma mais econômica de transporte deste produto, porém, há evidências de que esses dutos de transporte e fundo de tanques de armazenamento de etanol poderiam ser susceptíveis ao fenômeno de corrosão

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Baccarin, Leandro Stocco 1978. "Análise de corpos de prova mandibulares utilizados para avaliação de sistema de fixação óssea = Analysis of mandibular test specimens used to assess a bone fixation system." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/310497.

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Orientador: Luis Augusto Passeri<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Médicas<br>Made available in DSpace on 2018-08-21T21:56:10Z (GMT). No. of bitstreams: 1 Baccarin_LeandroStocco_M.pdf: 2096681 bytes, checksum: 04979b5f15938f19353542ca48c4d46d (MD5) Previous issue date: 2013<br>Resumo: Objetivo: O objetivo deste trabalho é avaliar, por meio de testes biomecânicos, se materiais sintéticos diferentes, empregados para a confecção de corpos de prova apresentam comportamento biomecânico diferente, em comparação aos demais, ao simular in vitro a re

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15

Novotný, David. "Lomové chování kovových slitin s nízkou úrovní houževnatosti." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-442806.

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The diploma thesis is focused on determining mechanical properties of alloys produced by powder metallurgy methods. Two alloys were studied, namely a highly entropic CrMnFeCoNi alloy and an oxide dispersion-strenthened FeAlO alloy. Both alloys were made in laboratory amount of test material and miniature test specimens were used to measure their mechanical properties. The main goal of the diploma thesis was to develop a crack preparation methodology, to examine and to evaluate the properties of miniature test specimens for materials with low levels of resilience. In the analytical part of the

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Dohnal, Ivo. "Ověření možnosti využití tahové deformace při Hopkinsonově testu." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-234248.

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The PhD thesis deals with the possibility of performing dynamic tensile tests. For this purpose, Split Hopkinson Pressure Bar Test (hereinafter SHPBT) is used. The basic construction of SHPBT device is designed to perform dynamic compression tests on materials (metals, plastics, and ceramics). The obtained results are deformation stress – strain and strain rate – strain dependences. SHPBT is capable of testing materials at high strain rates up to 10^2 – 10^3 s-1. It was created a special device for dynamic tensile tests of materials at high strain rates. The created device uses the basic const

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17

Janiš, Adam. "Mechanické vlastnosti materiálů pro 3D tisk." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442479.

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This thesis focuses on the description of 3D printing technologies using the FDM method, which uses deposition of molten thermoplastics and their subsequent cooling and solidification layer by layer. This unique structure then shows a strong anisotropy of mechanical properties and, as a result, their testing and print settings are very important. Tensile testing of plastic materials, including indicators of mechanical properties, are described in this thesis according to ČSN EN ISO standard. The practical part presents the concept of a device capable of performing these tests. The block diagra

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18

Bhat, Chandrashekhar. "Artificial Neural Network Approach For Characterization Of Acoustic Emission Sources From Complex Noisy Data." Thesis, Indian Institute of Science, 2001. https://etd.iisc.ac.in/handle/2005/251.

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Safety and reliability are prime concerns in aircraft performance due to the involved costs and risk to lives. Despite the best efforts in design methodology, quality evaluation in production and structural integrity assessment in-service, attainment of one hundred percent safety through development and use of a suitable in-flight health monitoring system is still a farfetched goal. And, evolution of such a system requires, first, identification of an appropriate Technique and next its adoption to meet the challenges posed by newer materials (advanced composites), complex structures and the f

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Bhat, Chandrashekhar. "Artificial Neural Network Approach For Characterization Of Acoustic Emission Sources From Complex Noisy Data." Thesis, Indian Institute of Science, 2001. http://hdl.handle.net/2005/251.

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Safety and reliability are prime concerns in aircraft performance due to the involved costs and risk to lives. Despite the best efforts in design methodology, quality evaluation in production and structural integrity assessment in-service, attainment of one hundred percent safety through development and use of a suitable in-flight health monitoring system is still a farfetched goal. And, evolution of such a system requires, first, identification of an appropriate Technique and next its adoption to meet the challenges posed by newer materials (advanced composites), complex structures and the f

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20

Tomková, Renáta. "Posouzení vlivu orientace zkušebního tělesa na tranzitní teplotu TSP určenou pomocí protlačovacích zkoušek na miniaturních discích." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-319623.

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The diploma thesis is aimed to assesment of the influence of the specimen orientation during the Small Punch Tests (SPT). Steel ČSN 41 0214, or its equivalent steel RFe80, W.-Nr. 1.104 was chosen for experiments. Resulting records from SPT were evaluated using already known correlations which are reported in literature. The correlation values were compared with values obtained by the standard tests like Charpy impact test and tensile test. The influence of axial, radial and tangential test specimens orientation is discussed in relation to Ductile-to-Brittle fracture behaviour of the steel.

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21

Saha, Ujjal kumar, and Adis Avdic. "Simulating a tensile test of a carbon fiber composite test specimen in ABAQUS." Thesis, Högskolan i Skövde, Institutionen för teknik och samhälle, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-5173.

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This work aims at providing a numerical tool for the efficient design of the multidirectional carbon fiber reinforced composite material by means of finite element simulations. Abaqus/ CAE v 6.9-1 software has been used to establish a 3D model for simulation of the tensile test on the composite specimen. The aim of this analysis of multidirectional carbon fiber reinforced composite is to predict the strain and stress distribution in different plies through thickness. Tensile test experiment was carried out and the result was analyzed by ARAMIS to calculate the young’s modulus, stress, loads an

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22

Rintamaa, Rauno. "Single specimen fracture toughness determination procedure using instrumented impact test /." Espoo [Finland] : Technical Research Centre of Finland, 1993. http://bibpurl.oclc.org/web/30658.

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23

Peignon, Axel. "Contribution au développement de méthodes de caractérisation et de modélisation de LVL de peuplier en vue de leur usage dans la mobilité." Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSEI017.

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Cette thèse s’inscrit dans le projet « BOOST » (acronyme de « le BOis pOur les STructures des véhicules ») financé par l’Agence Nationale de la Recherche (ANR). Il s’agit d’un Projet de Recherche Collaboratif entre l’ICA (Institut Clément Ader) à Toulouse et le LaBoMaP (LaBoratoire des Matériaux et Procédés) à Cluny.Le bois est une ressource locale, à très faible empreinte carbone et renouvelable. Largement utilisé dans l’aéronautique, mais aussi dans l’automobile en tant que structure travaillante dans le passé, son réemploi devient aujourd’hui un enjeu de la bioéconomie (Mair-Bauernfeind et

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24

Chang, Tsunou. "The notched coating adhesion specimen : a fracture test for coatings and accelerated screening test for adhesion /." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-11182008-063511/.

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25

Štefanovič, Peter. "Hodnocení dynamického poškození kompozitní konstrukce." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-377753.

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The first part of the diploma thesis with name „Evaluation of dynamic damage of composite structure“ focuses on designing device for impact experiments and suitable laminate samples made from prepregs. The conditions and problems of impact tests are also demonstrated here. The second part of the thesis deals with non-destructive control of damaged specimens based on thermography. This is mainly the extent of defects in the impaired area and the evaluation of results using the pulse infrared thermography method. Finally, the relative deviation in the crack size comparison between the visual met

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Dogra, Jasween. "The development of a new compression test specimen design for thick laminate composites." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/7121.

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A new specimen design for determining the compression strength of thick unidirectional laminate composites has been developed using finite element simulations and validated by experimental testing. The computational models included parts of the testing fixture. The materials used for experiments were carbon fibre/epoxy T300/914 from Hexcel Composites and IM7/8552. An understanding has been developed to explain why, using the standard, parallel sided design, for testing specimens in compression and using the ICSTM fixture, specimens using a laminate thicker than 2 mm do not fail in an acceptabl

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Song, Xiao. "Identification of forming limits of sheet metals with an in-plane biaxial tensile test." Thesis, Rennes, INSA, 2018. http://www.theses.fr/2018ISAR0002/document.

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Les procédés de mise en forme des tôles minces sont largement utilisés dans l'industrie. L’utilisation optimale des alliages légers ou des aciers à haute résistance, propices à des économies d’énergie dans le domaine des transports, nécessite une connaissance approfondie de leurs limites de formabilité. Classiquement, la formabilité d’une tôle est caractérisée par l’apparition d’une striction localisée. Cependant, pour des chargements spécifiques (chemins de déformation complexes ...), la rupture caractérise la formabilité du matériau, la courbe limite de formage à rupture (CLFR) plutôt que ce

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Cacciapuoti, Bianca. "The role of miniature specimen creep tests in power plant life management." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/51893/.

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The current Thesis describes for the first time based on extensive industrial data how small specimen creep testing techniques can be applied within a practical and deployable life assessment framework and in conjunction with other assessment techniques. The current state of the art for small specimen creep testing is critically reviewed; a review of traditional techniques used on site for the metallurgical assessment of material condition is also included, with examples from site investigations and assessment campaigns in both conventional and nuclear plant applications. The work describes ho

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29

Lemmon, Heber. "Methods for reduced platen compression (RPC) test specimen cutting locations using micro-CT and planar radiographs." Texas A&M University, 2003. http://hdl.handle.net/1969/310.

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30

Mucha, Bohumír. "Asfaltové směsi s použitím vyššího množství R-materiálu." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2014. http://www.nusl.cz/ntk/nusl-226710.

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At the beginning of the Master’s thesis the asphalt mixture of the type asphalt concrete and its basic properties are described. The main point of this work is to compare the functional properties of asphalt mixtures with the addition of higher amount of RAP and various rejuvenators used in the experimental section. From individual samples of asphalt mixtures taken during the laying, the control tests were carried out and the process of permanent deformation with the wheel tracking test was monitored. After that, using functional tests the properties of asphalt mixtures with conventional modif

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Czerwek, Martin. "Experimentální a numerická analýza externího zesílení železobetonového prvku namáhaného ohybem." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265545.

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Design and manufacture of reinforced concrete beams for laboratory testing. Implementation of selected tests of mechanical properties for selected elements. Experimental analysis of reinforced concrete beams in the laboratory. Creating a numerical model in the software ATENA 2D. Graphic processing of numerical and experimental analysis and comparison.

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Garg, Rachit. "Experimental Investigation of a Closed Loop Impedance Pump with an Asymmetric Wall." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron153325523527243.

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Cámara, Vela Juan Antonio, and Molina Juan Manuel Sánchez. "Design of a Double Cantilever Beam Test Specimen and Fixture for Kink Band Formation in Unidirectional Fibre Reinforced Composites." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-11218.

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Composite materials are widely used in demanding applications in aerospace and other industries. In order to understand the complex behaviour of the composite materials and their components, standardised test methods are used. One example is the double cantilever beam (DCB) test in which the test specimen is loaded in an opening, i.e., tensile mode. Failures in composite materials loaded compression are different from those in tension, for example, kink band or buckling-like failures can occur. In this project, several DCBs are designed and a new fixture which allows for compression testing of

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Chhabra, Nitin. "FINITE ELEMENT ANALYSIS OF A TEST SPECIMEN FOR STRENGTH OF A CO-POLYMER LAYER AT A BONE-IMPLANT INTERFACE." Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4427.

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The aim of this work is to evaluate the mechanical strength of a co-polymer of 2-hydroxyethylmethacrylate (HEMA) and methylmethacrylate (MMA), so that it can be applied as an interfacial layer between bone cement and steel implants to improve their performance and life. Finite element (FE) analysis techniques are used to assess the behavior of the interface layer under static and dynamic loading conditions. The material property of the co-polymer is a function of its composition and water saturation. The factors affecting the strength of the bone-implant interface are many. Implant interfacial

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Kim, Byung Jun. "Development of small specimen test technique for evaluation of fracture toughness of the structural materials for advanced nuclear systems." Kyoto University, 2011. http://hdl.handle.net/2433/142024.

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Zabriskie, Adam X. "Simulation of Counterintuitive Pressure Drop in a Parallel Flow Design for a Specimen Basket for Use in the Advanced Test Reactor." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1384.

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The Boosted Fast Flux Loop (BFFL) will expand the Advanced Test Reactor (ATR) at Idaho National Laboratory. Part of the BFFL is a new corrosion test cap section for testing in the ATR. The corrosion test cap section was designed with parallel channels to reduce the pressure drop and allow coolant contact with specimens. The fluid experiment conducted by Idaho State University found the pressure drop not characteristic of parallel channel flow but greater than without parallel channels. A Computation Fluid Dynamics simulation using STAR-CCM+ was conducted with the objectives of showing sufficie

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Vorel, Pavel. "Vlastnosti betonů s přídavkem plazmatem upravených polypropylenových vláken." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-225879.

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Master‘s thesis focuses on concrete combined with polypropylen fibres produced commercially, fibres without surface modifications and fibres modificated by plasma. Most important topic of the thesis is experimental verification of influence of plasma modificated fibres on attributes of fresh concrete and physical-mechanical attributes of solidified concrete. Based on the results of the tests perfomed on examin units compares results and anylyses applicability of different fibre surface modifications.

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Bonzanini, João Augusto Fraga. "Estudo dos efeitos do tamanho de corpos-de-prova no módulo de resiliência de quatro solos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/36121.

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Os parâmetros obtidos nos resultados de ensaios triaxiais de módulo de resiliência em solos têm sido cada vez mais utilizados no dimensionamento de pavimentos. Estes parâmetros são fundamentais em análises estruturais e mecanísticas de pavimentos. Pelas normas atuais o ensaio pode ser realizado em diversos tamanhos de corpo-de-prova contanto que respeite a relação entre diâmetro por altura 1:2 e a relação tamanho máximo de partícula por diâmetro do corpo-de-prova 1:5. O objetivo deste trabalho é compreender como variam os resultados de módulo de resiliência quando os ensaios são realizados em

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Nassar, Saif. "Evaluation of the Ohio CTE Device for Low Temperature Characterization of Hot Mix Asphalt." University of Akron / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=akron1597158023589419.

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40

Lin, Sen. "Evaluation of HMA fracture mechanics-based thermal cracking model." Thesis, KTH, Transportvetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-50945.

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Low temperature cracking is an important form of asphalt pavement deterioration in cold regions. The cracks develop when thermally induced stresses exceed the fracture resistance of the asphalt pavement. In this study, by incorporating HMA fracture mechanics into thermal cracking model, a new integrated model is introduced to investigate low temperature cracking performance. To evaluate its reliability and accuracy, the predicted thermally induced stress and failure temperature are compared with the fracture stress and fracture temperature obtained from thermal stress restrained specimen test.

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41

Li, Xuetao. "Mesomechanical Model for Failure Study of Two Dimensional Triaxial Braided Composite Materials." University of Akron / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=akron1288196629.

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Islam, Md Shafiqul. "Shear Fracture and Delamination in Packaging Materials : A study of Experimental Methods and Simulation Techniques." Licentiate thesis, Blekinge Institute of Technology, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-13340.

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Packages are the means of preservation, distribution and convenience of use for food, medicine and other consumer products. Package opening is becoming complicated in many cases because of cutting cost in design and production of opening techniques. Introduction of new package opening technique, material or geometry for better opening experience, forces new design measurements which require a large number of prototype developments and physical testing. In order to achieve more rapid and accurate design, Finite Element Method (FEM) Simulations are widely used in packaging industries to complime

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Qadir, Adnan. "Investigation Of Low Temperature Cracking In Asphalt Concrete Pavement." Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612696/index.pdf.

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In this study, low temperature cracking of asphalt concrete is investigated based on a laboratory experimental program including the design variables of aggregate type, gradation, asphalt content, binder grading, binder modification, and the experimental variables of cooling rate, and specimen size. The design of experiment is proposed according to the fractional factorial design principles to reduce the required number of test specimens. Mix designs are performed according to the Superpave mix design guidelines using materials obtained from the Turkish General Directorate of High-ways. In th

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Štěrbáček, Jaroslav. "Tahové a únavové zkoušky tenkých vláken a fólií." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228056.

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A testing system MTS Tytron 250 with an original construction was bought at the Institute of Physics of Materials, AVCR v.v.i. The main aim of this diploma thesis was to obtain experiences with the controlling of the system and with its advantages and limitations. The tensile tests were performed on Al fibres with diameters of 125 micrometer, 180 micrometer a 500 micrometer, nylon fibres of 250 micrometer and 500 micrometer and tensile and cyclic tests on Al foil of 77 micrometer in thickness. It was found that the machine is suitable for testing of either subtle specimens with low loading for

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Sickert, Jan-Uwe, Katrin Schwiteilo, and Frank Jesse. "Statistische Auswertung der Bruchspannung einaxialer Zugversuche an Textilbeton - Vorschläge für Teilsicherheitsbeiwerte." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-77867.

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Im Rahmen umfangreicher experimenteller Untersuchungen wurden die Bruchspannungen für Textilbeton unter einaxialer, einsinniger Zugbelastung ermittelt. Im Ergebnis liegen variierende Daten vor, die auf eine nichtdeterministische (unscharfe) Bruchspannung hinweisen. Die Versuchsergebnisse stellen eine moderate Datenbasis für eine statistische Auswertung und Quantifikation der Unschärfe dar. Zur Berücksichtigung der unscharfen Bruchspannung bei der Bemessung mittels einfacher Handrechnungen muss ein deterministischer Sicherheitsabstand eingeführt werden. Der Sicherheitsabstand wird in den derzei

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Hůlka, Jiří. "Výpočtová predikce tvárného porušování." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-234203.

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The issue of ductile damage prediction can be generally divided in two types of tasks. The first one is to preventing the initiation of ductile damage with is most common group of calculation today. The second task can be described as aimed damaging, such as machining, cutting, etc. The significant development of this issue occurred in recent decades by help of development and access to powerful computational techniques and new experimental possibilities. However, the behaviour of ductile damage at multiaxial proportional and non-proportional loading is insufficiently described. This thesis he

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Kobeissi, Alaa. "Caractérisation mécanique des matériaux composites à partir d'un essai de traction biaxiale intégrant l'effet des chemins de déformation." Thesis, Rennes, INSA, 2019. http://www.theses.fr/2019ISAR0021.

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Les matériaux composites à fibres continues sont largement utilisés dans la plupart des applications d'ingénierie en raison de leurs propriétés mécaniques spécifiques élevées. Les essais uniaxiaux sont principalement utilisés pour la caractérisation de ces matériaux en raison de leur simplicité et de leur faible coût. Cependant, ces essais ne sont pas adaptés pour caractériser le comportement du matériau soumis à un état de contrainte multiaxiale. Pour mieux caractériser leur comportement, des essais biaxiaux ont été développés. Pam1i les différentes techniques de traction biaxiale, l'essai de

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Vlk, Václav. "Mechanické vlastnosti a lomové chování svarových spojů a základních materiálů přívodního potrubí vodní turbíny." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231314.

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The master thesis is focussed on evaluation of mechanical properties and fracture behaviour of basic materials and weld joints of a water turbine supply pipe. The results of tensile tests, fracture toughness tests, hardness and micro-hardness tests and further chemical and metallography analysis are used for operating degradation level evaluation of the construction material and also for a residual operating recognition of the second, identical specimen of supply pipe.

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Smrž, Peter. "Odolnost slinutého karbidu vůči vzniku a šíření tepelných trhlin." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230951.

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This thesis aims to compare the relationship of physical-mechanical properties of tool materials made of WC-Co sintered carbides with their resistance to initiation and propagation of thermal cracks. The paper presents the results of testing the basic physical-mechanical properties of the three samples sintered carbides with different percentage of Co binder. Next, this thesis describes the progress and results of quench experiment and cutting tests using, which was described resistance of the tested samples to thermal and mechanical shock, depending on the values of physical-mechanical proper

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Edwards, Ylva. "Influence of waxes on bitumen and asphalt concrete mixture performance." Doctoral thesis, KTH, Väg- och banteknik, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-553.

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This doctoral thesis consists of a literature review, presented in two papers, and another six papers describing experimental studies of the influence of different kinds of wax and polyphosporic acid on bitumen and asphalt concrete mixture properties. The literature review should give an extensive description of the field of knowledge concerning wax in bitumen. Effects of wax in crude oil, bitumen and asphalt concrete as well as test methods for studying these effects are described. Theories behind possible mechanisms are also discussed, and commercial wax as additive to bitumen for different

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