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Dissertations / Theses on the topic 'Destructive test and properties'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Deniz, Saygin. "Determination Of Relations Between Elastic Properties Of Cement Mortars By Using Destructive And Nondestructive Methods." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/2/12611544/index.pdf.

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The measurement and monitoring of the elastic properties of cement-based materials is very important for assessing their quality, integrity and performance. Due to the nonhomogeneous and time-dependent characteristics of these materials, it is difficult to observe the developments in elastic properties with traditional destructive methods. The aim of this thesis is to determine and monitor elastic properties of mortar specimens made with different cements by using resonant frequency and ultrasonic pulse velocity test methods, and to obtain relationships between these elastic properties. For

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2

Park, Won Hyun, and Won Hyun Park. "Acoustic Source Localization in an Anisotropic Plate Without Knowing its Material Properties." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/622963.

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Acoustic source localization (ASL) is pinpointing an acoustic source. ASL can reveal the point of impact of a foreign object or the point of crack initiation in a structure. ASL is necessary for continuous health monitoring of a structure. ASL in an anisotropic plate is a challenging task. This dissertation aims to investigate techniques that are currently being used to precisely determine an acoustic source location in an anisotropic plate without knowing its material properties. A new technique is developed and presented here to overcome the existing shortcomings of the acoustic source local

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3

Shuchan, Pu. "Evaluation of non-destructive test methods for predicting the static bending stiffness and strength properties of thermally modified timber." Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-66829.

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Non-destructive technologies have been applied on predicting the stiffness and strength properties of timber for decades. However, these technologies have rarely been investigated on predicting the properties of thermally modified timber. This study was performed to investigate the non-destructive technologies on estimating of the strength and stiffness properties of thermally modified timber. The material that was utilized for study is full-size structural Norway spruce. Twenty-five thermally modified boards were investigated by applying both non-destructive technologies and static bending te

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4

Briez, Louise. "Relations microstructure-propriétés à haute température dans les alliages d'aluminium pour application aéronautique." Thesis, Paris Sciences et Lettres (ComUE), 2018. http://www.theses.fr/2018PSLEM045/document.

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Les alliages d’aluminium constituent environ 80 % des structures d’avions d’affaire Dassault Aviation. Ils sont choisis pour leur bonne tenue mécanique spécifique (rapportée à leur densité) et pour leur coût. Cependant, ils sont spécifiés pour des applications généralement limitées à la plage de températures comprises entre -55 et +85 °C. Qu'en est-il de leur emploi, volontaire ou accidentel, au delà de 85 °C ?L’objectif de cette thèse est de déterminer l’évolution des caractéristiques des alliages d’aluminium courants en fonction des facteurs temps/température/chargement imposés pour un large

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Gupta, Bhaawan. "Advanced electromagnetic non-destructive testing on creep degraded high chromium ferritic steels : Characterization, Modelling and physical interpretation." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI074.

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Sous des températures et des pressions élevées constantes, les matériaux métalliques de structure subissent une dégradation mécanique par fluage qui entraîne des changements microstructuraux. Ces derniers, s'ils ne sont pas surveillés à temps, peuvent entraîner des incidents sérieux, notamment dans le domaine de la production d’énergie électrique (centrales électriques). Pour déterminer les changements microstructuraux, le matériau doit avoir une forme et une taille spécifiques pour que l'analyse des images obtenues par microscopie électronique à balayage, diffraction par rétrodiffusion d'élec

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6

Paudel, Binod. "Determining Material and Geometric Properties of Flat Slab Bridges Without Plans." Youngstown State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1471358453.

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7

Weaver, Andrew Ronald. "Correlation of non-destructive pavement test devices." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0030/MQ65526.pdf.

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8

Draper, Jeffrey Dean. "Neural networks and non-destructive test/evaluation methods." Thesis, College Park, Maryland : University of Maryland, College Park, 1992. http://handle.dtic.mil/100.2/ADA254802.

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Thesis (M.S. in Civil Engineering)--University of Maryland, College Park, 1992.<br>"A scholarly paper submitted to Assistant Professor Ian Flood." Description based on title screen as viewed on April 16, 2009. Includes bibliographical references (p. 49-52). Also available in print.

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9

Fadda, Emilienne. "Evaluation des composantes de l'énergie de surface par la technique des angles de contact : application à la mise au point et au controle de procédés en microélectronique." Université Joseph Fourier (Grenoble), 1995. http://www.theses.fr/1995GRE10222.

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Les differentes etapes des procedes de la microelectronique se traduisent par des modifications physico-chimiques de materiaux organiques et inorganiques. Pour l'etude des surfaces et des interfaces, hormis les methodes optiques, il existe peu de techniques de caracterisation simples, rapides, non destructives et utilisables aisement en salle blanche, dans un contexte de production. La mesure des angles de contact presente potentiellement ces avantages. Elle permet de determiner les differentes composantes de l'energie de surface et donc d'acceder aux interactions de van der waals et aux inter

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10

Hussain, Mohammad S. "Development and evaluation of a non-destructive adhesion test." Thesis, Aston University, 1990. http://publications.aston.ac.uk/11894/.

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The object of this work was to further develop the idea introduced by Muaddi et al (1981) which enables some of the disadvantages of earlier destructive adhesion test methods to be overcome. The test is non-destructive in nature but it does need to be calibrated against a destructive method. Adhesion is determined by measuring the effect of plating on internal friction. This is achieved by determining the damping of vibrations of a resonating specimen before and after plating. The level of adhesion was considered by the above authors to influence the degree of damping. In the major portion of

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11

Kukay, Brian Michael. "Bridge Instrumentation and the Development of Non-Destructive and Destructive Techniques Used to Estimate Residual Tendon Stress in Prestressed Girders." DigitalCommons@USU, 2008. https://digitalcommons.usu.edu/etd/128.

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This research embodied a three-prong approach for directly determining the residual prestress force of prestressed concrete bridge girders. For bridges that have yet to be constructed, outfitting girders with instrumentation is a highly effective means of determining residual prestress force in prestressed concrete bridge girders. This constitutes the first prong. Still, many bridges are constructed without such instrumentation. For these bridges, a destructive technique can be used to directly determine the residual prestress in a prestressed concrete bridge girder. This implies that the gird

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12

Alleyne, David N. "The non-destructive testing of plates using ultrasound Lamb waves." Thesis, Imperial College London, 1991. http://hdl.handle.net/10044/1/7312.

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13

Schmid, Calvin T. "NON-DESTRUCTIVE TEST FOR WIRE ROPE BY USE OF VIBRATIONS." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/theses/215.

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Visual inspection is the current method for determining if a wire rope needs to be removed from service. It can be time consuming and inaccurate. The point of this research is to prove that vibration testing could be used on rope to find damage. For this research, capacitive accelerometers were used. A program ran a Fast Fourier Transform (FFT) as the main analysis. From the data produced, it was determined that a damaged rope's vibration signature was different from the vibration signature of the undamaged rope. There were four different types of vibrations used: an impulse while measuri

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14

Ayra, Behnam. "Structural identification for condition assessment using modal non-destructive test data /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2000.

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Thesis (Ph.D.)--Tufts University, 2000.<br>Adviser: Masoud Sanayei. Submitted to the Dept. of Civil Engineering. Includes bibliographical references (leaves 152-159). Access restricted to members of the Tufts University community. Also available via the World Wide Web;

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15

Courtney, Scott B. "A rapid, non-destructive test to detect camshaft lobe grinding burn." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09042008-063602/.

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White, John D. H. "A random signal ultrasonic test system for highly attenuating media." Thesis, Keele University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315234.

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17

Sorsa, A. (Aki). "Prediction of material properties based on non-destructive Barkhausen noise measurement." Doctoral thesis, Oulun yliopisto, 2013. http://urn.fi/urn:isbn:9789526200682.

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Abstract Barkhausen noise measurement is an intriguing non-destructive testing method suitable for ferromagnetic materials. It is based on the stochastic movements of magnetic domain walls when the tested sample is placed in an external varying magnetic field. Barkhausen noise is typically utilised so that some features are calculated from the signal and then compared with the studied material properties. Typical features are, for example, the root-mean-square value (RMS), peak height, width and position. Better utilisation of the method, however, requires quantitative predictions of material

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18

Matter, Nader Sayed Ali Saleh. "Analysis of pavements and their structural maintenance requirements based on non destructive test techniques." Thesis, Queen's University Belfast, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.238990.

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19

Starck, Simon. "The integration of non-destructive test methods in the South African Durability Index approach." Master's thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/5000.

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Includes abstract.<br>Includes bibliographical references.<br>In South Africa, the Durability Index (D!) approach is a performance-based method for specifying (or assessing) the durability of RC [reinforced concrete] structures. The oxygen permeability index (OPI) test is being standardised in South Africa, and has been implemented in a large scale project by the South African National Roads Agency Limited (SANRAL). However, the semi-invasive nature of the test method (due to core extraction) has been seen as undesirable by engineers and clients. The Swiss approach (after Swiss Standard SIA 26

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20

Wang, Li. "Fast and Accurate 3D X ray Image Reconstruction for Non Destructive Test Industrial Applications." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS362/document.

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La tomographie en 2D et 3D sont largement utilisée dans l’imagerie médicale ainsi que dans le Contrôle Non Destructif (CND) pour l’industrie. Dans toutes les deux applications, il est nécessaire de réduire le nombre de projections. Dans certains cas, la reconstruction doit être faite avec un nombre d’angle de projections limité. Les données mesurées sont toujours avec des erreurs (erreurs de mesure et de modélisation). Nous sommes donc presque toujours dans la situation de problèmes inversés mal posés. Le rôle des méthodes probabilistes et de la modélisation a priori devient crucial. Pour la m

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MacKenzie, Roderick. "The non-destructive evaluation of Sitka spruce mechanical properties using acoustic methods." Thesis, Edinburgh Napier University, 2009. http://researchrepository.napier.ac.uk/Output/6039.

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The need for improved timber grading is key to improving Scottish forestry: the majority (80%) of the sustainable softwood population in Scotland is Sitka spruce of variable quality. Current visual assessment of strength and stiffness is inaccurate, and machine stress grading in sawmills is little better due to incorrect assumptions regarding consistency within softwood species and between trees of the same stand. The author develops and evaluates non-destructive test (NOT) methods for Scottish Sitka spruce based upon impact-e9ho testing across a range of scales from plank, to log, to standing

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22

Darrell, Leopold Augustus. "Development of an NDT method to characterise flaws based on multiple eddy current sensor integration and data fusion." Thesis, Leeds Beckett University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245778.

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23

Herculano, Luis FlÃvio Gaspar. "Development of an electrochemical test methods for evaluating destructive no sensitization of austenitic stainless steels." Universidade Federal do CearÃ, 2004. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7341.

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During welding, the regions adjacent the welds, which can reach high temperatures cause microstructural changes in austenitic steels, thereby increasing the susceptibility to intergranular corrosion, due to the reduction of chromium in adjacent zones over the grain boundaries, rich in precipitates chromium carbides (Cr23C6). A study of the influence of heat input on the sensitization is of great value and interest in various activities, such as in chemical, petroleum, petrochemical, marine, automobile, etc.. Thus, we studied the effect of the amount of heat (energy welding) on the amplitude of

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24

Korsell, Nicklas. "Statistical Properties of Preliminary Test Estimators." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7155.

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25

KANGAS, SCOTT JONATHAN. "AUTOMATED AND ENHANCED POST-PROCESSING OF MULTIPLE REFERENCE IMPACT TEST (MRIT) DATA." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1070576205.

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Rutschlin, Marc. "The non-destructive measurement of the radio frequency properties of hard rock borehole cores." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50504.

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Thesis (PhD) -- Stellenbosch University, 2005.<br>ENGLISH ABSTRACT: The effective use of borehole radar in geophysical exploration requires accurate knowledge of the dielectric properties of the geological system in which it is employed. The attenuation and propagation velocity of pulses through rock must be known in order to plan and interpret experimental data. Conventional destructive methods for the measurement of hard rock cores require the careful preparation of samples. This firstly necessitates the selection of sampling position and the resulting estimation of rock properties bas

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27

Javdekar, Chitra N. "Measurement selection and parameter estimation strategies for structural stiffness and mass updating using non-destructive test data /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2004.

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Thesis (Ph.D.)--Tufts University, 2004.<br>Adviser: Masoud Sanayei. Submitted to the Dept. of Civil Engineering. Includes bibliographical references (leaves 300-305). Access restricted to members of the Tufts University community. Also available via the World Wide Web;

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28

Rahimi, Mohammad Reza. "Distributed Stress Sensing And Non-Destructive Tests Using Mechanoluminescence Materials." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1430763721.

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29

Avelar, Lezama Ivan. "Preliminary non-destructive assessment of moisture content, hydration and dielectric properties of Portland cement concrete." Thesis, Texas A&M University, 2005. http://hdl.handle.net/1969.1/4739.

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Moisture availability is a focal point in the structural development of young concrete. Under low humidity and hot weather conditions, concrete loses moisture rapidly as it hardens, and it is very difficult, if not impossible, to minimize this loss even though proper curing procedures are used. Early losses in moisture content jumpstart premature surface self-dissecation, increase surface paste porosity, prevent concrete from achieving the mechanical properties for which it was originally designed, and facilitate the development of surface distresses such as spalling. Curing effectiveness and

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30

Lawson, Joseph L. "On the determination of the elastic properties of geopolymeric materials using non-destructive ultrasonic techniques /." Online version of thesis, 2008. http://hdl.handle.net/1850/7356.

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31

Stolzenburg, Jens Christian. "Non-contact method to measure the material properties of layered media." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/19312.

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Baimpas, Nikolaos. "'Hybrid' non-destructive imaging techniques for engineering materials applications." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:1aa00fed-34e6-4a5e-951b-c710e21ac23c.

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The combination of X-ray imaging and diffraction techniques provides a unique tool for structural and mechanical analysis of engineering components. A variety of modes can be employed in terms of the spatial resolution (length-scale), time resolution (frequency), and the nature of the physical quantity being interrogated. This thesis describes my contributions towards the development of novel X-ray “rich” imaging experimental techniques and data interpretation. The experimental findings have been validated via comparison with other experimental methods and numerical modelling. The combination

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Chan, Tony T. T. "Ultrasonic method of non-destructive test in metals effects of grain size on ultrasound wave at various frequencies /." access abstract and table of contents access full-text, 2006. http://libweb.cityu.edu.hk/cgi-bin/ezdb/dissert.pl?msc-ap-b21456276a.pdf.

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Thesis (M.Sc.)--City University of Hong Kong, 2006.<br>"Master of Science in Materials Engineering & Nanotechnology dissertation." Title from title screen (viewed on Nov. 21, 2006) Includes bibliographical references.

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Kermani, Behnoud. "Application of P-wave Reflection Imaging to Unknown Bridge Foundations and Comparison with Other Non-Destructive Test Methods." Master's thesis, Temple University Libraries, 2013. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/234113.

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Civil Engineering<br>M.S.C.E.<br>Proper design of bridge structures requires an appreciation for the possible failure mechanisms that can develop over the lifetime of the bridge, many of which are related to natural hazards. For example, scour is one of the most common causes of bridge failures. Scour occurs due to the erosion of soil and sediment within a channel with flowing water. During a flood event, the extent of scour can be so great that it can destabilize an existing bridge structure. In order to evaluate the scour potential of a bridge, it is necessary to have information regarding t

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Kumagai, Tomomi 1967. "Properties and applications of a martingale hypothesis test." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/8219.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Economics, 2001.<br>Includes bibliographical references (p. 129-132).<br>In this thesis, I explore the properties of a martingale hypothesis test, and present three applications of the test that address empirical questions in asset-pricing finance. The martingale test exploits the lack of correlation between forecast error and the current information set. The test is designed to consider all alternatives, including linear and nonlinear relationships between the forecast error and a current information variable. When the current i

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Mishra, Phoolendra Kumar. "Pumping test inference of saturated/unsaturated aquifer properties." Diss., The University of Arizona, 2010. http://hdl.handle.net/10150/194085.

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Analytical solutions for aquifer response to pumping are commonly used to infer the hydraulic properties of aquifers. This dissertation develops new analytical solutions for the analysis of pumping test data from confined and unconfined aquifer.An analytical solution for flow to a partially penetrating well of infinitesimally small radius in a compressible unconfined aquifer is developed that allows inferring its saturated and unsaturated hydraulic properties from drawdowns recorded in the saturated and/or the unsaturated zone. The effects of unsaturated zoneconstitutive parameters and thickne

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Kwan, Tinna. "Psychometric properties of the Draw-A-Person Test." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277147.

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This study examined the psychometric properties for the Draw-A-Person (DAP) test (Naglieri, 1988). Data were collected from 191 children following the accepted procedure from an earlier study (Badger & Jones, 1988). Drawings were scored using both Harris' (1963) and Naglieri's (1988) scoring systems following the procedures outlined in the manuals. Basically, the DAP test demonstrated reliable and valid properties. The Naglieri's (1988) scoring system was favored in this study because it demonstrated more consistent internal consistency, higher inter- and intra-rater reliability and satisfacto

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Haapalainen, K. (Kalle). "Portable test and stimulus standard properties and use." Bachelor's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201907162703.

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Abstract. Verification is a key part in the System-on-chip (SoC) design process. SoCs are constantly getting more and more complex, which makes verifying them harder and more time consuming. New standards and methods are constantly being developed to try and make the verification process easier and more effective. The portable test and stimulus standard allows automated generation of tests and reusing test environments across multiple different platforms.Portable test and stimulus standard : ominaisuudet ja käyttö. Tiivistelmä. Verifiointi on tärkeä osa järjestelmäpiirien suunnitteluprosessiss

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Bale, Jefri Semuel. "The damage observation of composite using non destructive testing (NDT) method." Thesis, Paris 10, 2014. http://www.theses.fr/2015PA100067/document.

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L'objectif de ce travail de thèse est d'étudier le comportement de l'endommagement des matériaux composites sous chargement statique et fatigue par contrôle non destructif (C.N.D) thermographie et soutenu par émission acoustique et la tomographie (CT scan). Pour cela, ce unidirectionnels composite à fibres de verre (GFRP) et discontinue composite à fibres de carbone (DCFC) ont été utilisés comme les éprouvettes qui ont fourni par PSA peugeot citröen, France. Une série d'essais mécaniques a été réalisée pour déterminer le comportement de l'endommagement sous chargement statique et fatigue. Pend

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Al-Jader, Mohamad Aqeel. "Investigation of spot welding electrode tip wear and a non-destructive test of plastic joining in the automotive industry." Thesis, Liverpool John Moores University, 2014. http://researchonline.ljmu.ac.uk/4445/.

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The automotive industry is reliant on resistance spot-welding just as the sandwich making industry is reliant on bread. An automobile contains an average of 5000 welds. The quality of these welds is inspected and governed by certain standards. In order to maintain these standards there are different approaches to quality control. There are many factors that are accountable to a successful weld. The main factors are the voltage across the electrodes, the pressure applied by the electrodes at the interface of the metal sheets, the current applied, the surface condition and the composition of the

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Wessels, Coenraad Brand. "The variation and prediction of structural timber properties of standing Pinus patula trees using non-destructive methods." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86246.

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Thesis (PhD(For))--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Pinus patula is the most intensively planted conifer in the tropics and sub‐tropics. In South Africa Pinus patula plantations are the main saw‐log resource for structural lumber production. Improved intensive silvicultural practices and tree breeding have resulted in marked increases in the rate of growth. To reap the financial benefits of the faster growth, plantation managers are more and more inclined to reduce rotation ages, which inevitably results in the production of higher proportions of juvenile wood at final

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Saddi, Ghada-Maria. "Scoring properties of the formalin test in the mouse." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0005/MQ44268.pdf.

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Saddi, Ghada-Maria. "Scoring properties of the formalin test in the mouse." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=20856.

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A large number of behavioural methods have been developed to investigate nociception and the actions of analgesic drugs in animals. The formalin test is increasingly used as a model of injury-produced pain. The generally accepted method of rating pain used for mice is to count or time paw licks. The aim of this study was to examine scoring properties of other behaviours in the formalin test in mice, and determine the best measure of pain.<br>In the first experiment, the behavioural responses to intraplantar injection of a series of formalin concentrations were assessed. In the second experimen

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Atroshenkova, Anastasiia, and Анастасія Олександрівна Атрошенкова. "Strength properties investigation of glass by scratch test method." Thesis, National Aviation University, 2021. https://er.nau.edu.ua/handle/NAU/54160.

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Робота публікується згідно наказу Ректора НАУ від 27.05.2021 р. №311/од "Про розміщення кваліфікаційних робіт здобувачів вищої освіти в репозиторії університету". Керівник роботи: доцент, к.т.н. Закієв Вадим Ісламович<br>This master thesis is dedicated to the сomparative study of glass strength using scratch test technique. The methods of investigation are scratch tests, nanoindentation and calculation methods for results analysis.<br>Ця магістерська робота присвячена порівняльному вивченню міцності скла за допомогою методики випробування дряпанням. Методами дослідження є скретч-тести, наноінд

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Ahmed, Abdulkadir Sh Ali 1955. "Soil physical properties and test of empirical permeability calculations." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/191895.

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Physical properties of texture, bulk density, saturated hydraulic conductivity, moisture characteristic curve and unsaturated hydraulic conductivity, expressed as relative K were determined for 25 bulk samples and 66 undisturbed soil cores collected from the University of Arizona Maricopa Agricultural Center. The CV values were evaluated for all parameters studied and their ranges were all found to be in agreement with the guidelines of Warrick and Nielsen (1980). Empirical models were used for calculation of saturated K moisture characteristics and unsaturated K. The calculated data were comp

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Ahamdi, Hossein. "Concrete Bridge Deck Aging, Inspection and Maintenance." University of Toledo / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1513292224089599.

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Joseph, Serge. "Industrialisation d'un prototype de microscope acoustique." Valenciennes, 1989. https://ged.uphf.fr/nuxeo/site/esupversions/b8833446-48ed-4b35-8b84-a97acf200619.

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Aktas, Can Baran. "Determining The Thickness Of Concrete Pavements Using The Impact-echo Test Method." Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608423/index.pdf.

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Abstract:

Traditionally, destructive methods such as coring are used for the condition assessment of an existing concrete structure. Although these methods may yield valid data about the corresponding concrete section, they are quite expensive and time consuming. More important than these, destructive methods damage the structure being investigated and these points usually become focal points for further deterioration. For all these reasons, only a few samples can be collected from a structure and this results in a poor representation of the complete structure. The impact-echo technique is one of the

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Yucel, Mustafa Can. "Structural Identification, Damage Detection By Non-destructive Tests And Determining Axial Loads In Cables." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12611278/index.pdf.

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Damage and condition identi&amp<br>#64257<br>cation of existing structures using non-destructive tests is a common challenge that has been worked on for a long time. In this study, two di&amp<br>#64256<br>erent methods were developed to &amp<br>#64257<br>nd existing force on cables as well as determine bending characteristics (EI coe&amp<br>#64259<br>cients) of beam like structures (such as bridges). Comparing forces in symmetrically placed cables or against values obtained from design drawings would indicate structural imbalance as well as &amp<br>#64257<br>nding EI coe&amp<br>#64259<br>cient

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RASILE, Antonio. "Metodologie e set-up di misura per l’esecuzione di test non distruttivi su materiali metallici." Doctoral thesis, Università degli studi di Cassino, 2020. http://hdl.handle.net/11580/75155.

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In this thesis, the methodologies and measurement set-up for the execution of non-destructive tests with the eddy currents technique (ECT) and ultrasound technique (UST) are examined and implemented. Any industrial product, made from metallic and non-metallic materials, can present numerous varieties of defects, inside or on its external surface, which differ both in type and shape. These discontinuities can be caused by the manufacturing processes and by the stresses that the various components undergo during their use. The presence of these defects or their development and increase, especia

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