Academic literature on the topic 'Elastizitätsmodul'
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Journal articles on the topic "Elastizitätsmodul"
Ledworuski, Siegmar, Matthias Ell, and Hans-Joachim Kühn. "Den Elastizitätsmodul sicher bestimmen." Materials Testing 42, no. 4 (April 1, 2000): 109–13. http://dx.doi.org/10.1515/mt-2000-420404.
Full textMatthews, A., and A. Leyland. "Entwicklungen bei PVD-Verschleißschutzschichten*." HTM Journal of Heat Treatment and Materials 56, no. 1 (January 1, 2001): 5–13. http://dx.doi.org/10.1515/htm-2001-0002.
Full textSchreyer, Georg Wilhelm. "Dynamische Elastizitätsmodul-Messung von Gußeisen mit Lamellengraphit." Forschung im Ingenieurwesen 61, no. 5 (May 1995): 141–46. http://dx.doi.org/10.1007/bf02628987.
Full textZimmermann, St, Ch Kessler-Kramer, and H. S. Rutten. "Neues Verbundwerkstoffmodell für den Elastizitätsmodul hochfester Betone." Beton- und Stahlbetonbau 97, no. 3 (March 2002): 147–56. http://dx.doi.org/10.1002/best.200200650.
Full textMark, P., and D. Lehnen. "Änderungen im Elastizitätsmodul von Beton bei Verbundträgern." Beton- und Stahlbetonbau 98, no. 3 (March 2003): 159–67. http://dx.doi.org/10.1002/best.200300830.
Full textSperlich, Karsten, Stephan Reiß, Sebastian Bohn, Heinrich Stolz, Rudolf Guthoff, Anselm Jünemann, and Oliver Stachs. "Auswirkungen des altersbezogenen kornealen Elastizitätsmoduls auf die Applanationstonometrie." Klinische Monatsblätter für Augenheilkunde 234, no. 12 (December 2017): 1472–76. http://dx.doi.org/10.1055/s-0043-122500.
Full textMaier, Georg. "Untersuchungen zum Elastizitätsmodul von Stählen bei höheren Temperaturen." Materials Testing 29, no. 11-12 (November 1, 1987): 358–66. http://dx.doi.org/10.1515/mt-1987-2911-1212.
Full textNeubauer, Johannes, Angelika Rzanny, Roland Göbel, Mario Fachet, and Harald Küpper. "Komposite im werkstoffkundlichen Vergleich – Hinweise für den Praktiker." ZWR - Das Deutsche Zahnärzteblatt 126, no. 09 (September 2017): 406–17. http://dx.doi.org/10.1055/s-0043-117563.
Full textMünstermann, Sebastian, and Wolfgang Bleck. "Einflussgrößen auf den Elastizitätsmodul von Stählen für den Karosseriebau." Materials Testing 47, no. 6 (June 2005): 337–44. http://dx.doi.org/10.3139/120.100663.
Full textDube, H., and E. Kehr. "Zusammenhang zwischen Elastizitätsmodul und Biegefestigkeit von MDF und Spanplatten." Holz als Roh- und Werkstoff 53, no. 1 (January 1995): 116. http://dx.doi.org/10.1007/bf02716406.
Full textDissertations / Theses on the topic "Elastizitätsmodul"
Ego, Manfred [Verfasser], and Anselm [Akademischer Betreuer] Petschelt. "Über das Elastizitätsmodul plastischer Dentalmaterialien / Manfred Ego. Gutachter: Anselm Petschelt." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2013. http://d-nb.info/1054164711/34.
Full textRichter, Kenneth. "Untersuchungen zur Gültigkeit des Konzeptes des effektiv geformten Indenters bei Variation des Verhältnisses Elastizitätsmodul zu Fließgrenze." Master's thesis, Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-66682.
Full textZdrojek-Fernandez, Magdalena [Verfasser], and Michael [Akademischer Betreuer] Döllinger. "Analyse der Stimmlippen-Oberflächenschwingung im Hemilarynxexperiment: Künstliche Stimmlippen mit Elastizitätsmodul 5kPa / Magdalena Zdrojek-Fernandez. Gutachter: Michael Döllinger." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2015. http://d-nb.info/1075836336/34.
Full textFrank, Friedrich [Verfasser], Michael [Akademischer Betreuer] Döllinger, and Christopher [Akademischer Betreuer] Bohr. "Analyse der Stimmlippen-Oberflächenschwingung im Hemilarynxexperiment: Künstliche Stimmlippen mit Elastizitätsmodul 9kPa / Friedrich Frank. Gutachter: Michael Döllinger ; Christopher Bohr." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2015. http://d-nb.info/108095483X/34.
Full textSchwarzer, Norbert. "About the theory of thin coated plates." Universitätsbibliothek Chemnitz, 2002. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200200050.
Full textHerrmann, Matthias. "Das Konzept des effektiven Indenters für die Ermittlung des Elastizitätsmoduls und der Fließgrenze dünner Schichten." Doctoral thesis, Universitätsbibliothek Chemnitz, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-201000910.
Full textConsiderable research effort has focused on measuring the mechanical properties of thin films via nanoindentation. To characterize the mechanical behavior of thin films, accurate determination of Young’s modulus and yield strength is required. For the purpose of modeling and dimensioning, these quantities serve as input parameters as well. An existing major challenge in the context of (nanoindentation) data analysis is the complete consideration of the layered structure of the specimen. In the literature, a few experimental and theoretical-based approaches have been developed to extract actual film properties. However, those approaches are only applicable under specific conditions and, hence, the problem is not satisfyingly solved to date. Therewith, investigations of accurately assessing mechanical properties of thin films, in general, or Young’s modulus and yield strength, in detail, are still part of ongoing research in the field of mechanical testing in materials research and development. The concept of the “effective indenter” is an extension of the current and established analysis of nanoindentation data and is a new possibility to determine mechanical properties of thin films. In this work, an investigation is given concerning the suitability of the model, in a specific approximation, for determining Young’s modulus of thin films. In a second step, the investigations are focused on the determination of yield strength. Film/substrate composites having a varying ratio of modulus and yield strength between film and substrate are chosen; BERKOVICH indentations are analyzed and spherical indentation experiments are used as second and independent technique. It is shown that the model is suitable to deliver Young’s modulus of thin films. However, a critical ratio of indentation depth to film thickness is identified; for ratios above this critical value, the model, in the present approximation, can no longer be used. Physical mechanisms that explain this finding are suggested and discussed. Moreover, the above-mentioned model is used to characterize the very specific class of materials of non-porous and porous low-k dielectric thin films in terms of yield strength and Young’s modulus. Finally, finite element modeling is used to study critical issues in applying the model of the “effective indenter” and its specific approximation used here for analysis of nanoindentation data for bulk materials
Bennis, Abdelali. "Entwicklung einer kontaktfreien nichtdestruktiven Methode zur Messung von mechanischen und elastischen Eigenschaften von mikromechanischen Mehrschichtsystemen mit akustischen Oberflächenwellen." Doctoral thesis, Universitätsbibliothek Chemnitz, 2009. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200901613.
Full textThis thesis represents a further development of the existing laser acoustic techniques for the measurement of mechanical and elastic properties of micromechanical multi layer systems. Most of the existing laser acoustic techniques are based on the optothermal generation of broadband surface acoustic waves in a layer system. To measure the velocity of the generated waves, a two points measurement of the wave train is typically performed. From the analysis of the spectrum of the wave trains at the two points, a dispersion curve (velocity of the surface acoustic wave against frequency) can be determined experimentally for the layer system. The dispersion relation is also determined through an appropriate model for the layer system. When the mechanical and elastic properties of the layer system are changed in the model, until the modeled and the experimental dispersion curves match in a least square sense, then the mechanical and elastic properties are found. In the present thesis, the optothermal generation of the surface acoustic waves is performed in a narrowband setup. A second point for the measurement of the acoustic wave train is not needed. The use of only one measurement point instead of two ameliorates the accuracy of the measurement (no distance measurement between two points is needed). Further, no spectrum analysis of the wave train is replaced with a simpler FFT. From the frequency of the wave train and the given wavelength from the generation mask, the velocity for each frequency can be determined easily. For the modeling of the dispersion curve, an existing BEM model is expanded to consider an unlimited number of layers. In this new model, any combination of properties can be determined for layers and substrates with any cristalline orientation given. The developed method is used to determine the properties of many challenging multi layer systems.One layer system has an AIN layer with a hexagonal structure. Another layer system has a very low dispersion effect of less than 1% velocity difference over the frequency range (polycristalline silicon on a silicon substrate). Another layer system contains a Silicon-Germanium layer. From the measured properties Young's modules, density and Poisson ration of this layer, the germanium concentration is determined
Jüttner, Gábor. "Fließinduzierte Orientierungen in spritzgegossenen LCP-Teilen." Doctoral thesis, Universitätsbibliothek Chemnitz, 2004. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200400254.
Full textTrescher, Karoline. "Cokulturtestsystem für die Untersuchung des Einflusses physikochemischer Eigenschaften von Copolymeren auf das Verhalten von Keratinozyten und Fibroblasten." Phd thesis, Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2012/6291/.
Full textChemical and physical properties of polymers can influence various cell types, e.g. concerning adherence and functionality. For instance, the elasticity of a polymer can influence, which pulling force a cell can generate towards a substrate. According to the cell type, its behavior can be controlled by intracellular feedback mechanisms. The surface charge and/or hydrophilicity of a polymer initially influence the adsorption of ions, proteins and other molecules. In particular, the composition, density, and conformation of the adsorbed components mediate the cell-material interactions. Since different cell types present varying cell membrane associated proteins, sugars and lipids, it is assumed that polymer properties can induce cell specific effects. Polymers, which can regulate specific cell reactions, become more and more important for biotechnological uses and applications in the regenerative medicine. The isolation and culture of primary keratinocytes is still challenging and an adequate wound healing remains a clinical task. A polymer, which enables a preferential adherence of keratinocytes and induces a reduced adherence of dermal fibroblasts, would provide enormous advantages for keratinocyte culture systems as well as for wound dressings. To investigate the specific influence of certain polymer properties on primary human keratinocytes and fibroblasts, a cell culture system for mono- and coculture of both cell types was established. The test system was designed as a screening to investigate the influence of polymers with gradations of different properties on the cells. Thereby, the viability and density of adherent and not adhered cells, as well as the impairment of the cell membranes were analyzed in mono- and cocultures, and the selective adherence of keratinocytes in the coculture was evaluated using a specific immunocytochemical staining for keratin14 and vimentin. Furthermore, the deposition of extracellular matrix components and the secretion of soluble factors were analyzed for the elastic polymers. Since the elasticity of crosslinked poly(n-butylacrylate) (cPnBA) networks can be adjusted by the amount of the crosslinker, they were used as model polymers to investigate the influence of varying elasticity to the cells. On the less elastic cPnBA, the ratio of keratinocytes to fibroblasts was increased compared to the more elastic one. From these results, a slight cell selective effect can be assumed. Acrylonitrile-based copolymers were used as model polymers for the variation of surface charge and hydrophilicity, since their properties can be modified by the type and molar ratio of comonomers. By the variation of the molar ratio of positively charged comonomers (Methacrylic acid-2-aminoethylester hydrochloride (AEMA) and N-3-aminopropyl methacrylamide hydrochloride (APMA)), or a negatively charged comonomer (2-methyl-2-propene-1-sulfonic acid sodium salt (NaMAS)), the amount of positive or negative charges was modified. The hydrophilicity was increased by the molar ratio of the hydrophilic comonomer N-vinylpyrrolidone (NVP). With an increased molar ratio of the positively charged comonomer AEMA, a tendency towards a higher density of adherent keratinocytes could be shown, whereby, the density of adherent fibroblasts remained unaffected. With increasing molar ratios of the positively charged comonomer APMA, no differences between cell densities, viability or selectivity were detectable. Comparable to AEMA, a tendency towards improved keratinocyte adhesion could be shown with an increasing molar ratio of the negatively charged comonomer NaMAS. The increase of the hydrophilicity of the copolymers led to a reduced adherence and viability of the keratinocytes, as well as of the fibroblasts. In conclusion, a test system was established, which enables the evaluation of primary human keratinocytes and fibroblasts in contact with different polymers in monoculture, as well as in coculture. Furthermore, the present thesis shows that directed modifications of polymer properties influenced the adherence and viability of both cell types. The decrease of elasticity and the increase of the molar ratio of charged comonomers led to an increased keratinocyte adherence. Since the fibroblasts remained unaffected, slight cell selectivity was shown. By further increasing the stiffness or the amount of charged comonomers, further enhancement of this effect might be possible.
Sohrmann, Christoph, and Jens Eller. "Optimal Layer Design." Bachelor's thesis, Universitätsbibliothek Chemnitz, 2004. http://nbn-resolving.de/urn:nbn:de:swb:ch1-200401468.
Full textDiese Bachelorarbeit befasst sich mit numerischen Untersuchungen zum optimalen Design von schützenden Mehrschichtbeschichtungen, die einer externen, Hertzschen Last ausgesetzt sind. Hinsichtlich der mechanischen Zuverlässigkeit und Haltbarkeit von Substrat und Beschichtung, versuchen wir die beste Zusammensetzung von gegebenen Materialien mit möglichst geringem Rechenaufwand zu finden. Die numerischen Berechungen wurden mit der Simulationssoftware ELASTICA durchgeführt, welches das erste kommerzielle, nicht-FEM-basierte Programm zur Berechnung von Stressfeldern innerhalb mehrfach beschichteter, elastischer Materialien darstellt. Dafür benutzten wir auf dem massiven Parrallelrechner CLiC (Chemnitzer Linux Cluster) unsere Windows basierte Anwendung unter der Emulationssoftware Wine. Das Ergebnis der Optimierung hängt im allgemeinen sehr stark von der Qualität der Eingangsparameter (z.B. Materialeigenschaften) ab, welche nicht immer in der erwünschten Genauigkeit vorliegen. Es wird gezeigt, dass die in dieser Arbeit vorgestellte Vorgehensweise sehr gute Resultate liefert und für reale Anwendungen einen äusserst ressourcenschonenden Lösungsweg darstellt
Books on the topic "Elastizitätsmodul"
Krause, Klaus. Über Den Einfluß der Belastungsgeschwindigkeit Auf Den Elastizitätsmodul des Mörtels und Betons Sowie des Zementsteins und Zuschlags. VS Verlag fur Sozialwissenschaften GmbH, 2013.
Find full textBook chapters on the topic "Elastizitätsmodul"
Reinhardt, Hans-Wolf, and Oliver Mielich. "Statischer und dynamischer Elastizitätsmodul von Beton mit langsam reagierenden Gesteinskörnungen nach AKR." In Baustoff und Konstruktion, 195–202. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29573-7_21.
Full text"Elastizitätsmodul m." In Wörterbuch GeoTechnik/Dictionary Geotechnical Engineering, 301. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-33335-4_51300.
Full text"tiefenabhängiges Elastizitätsmodul n." In Wörterbuch GeoTechnik/Dictionary Geotechnical Engineering, 1128. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-33335-4_200916.
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