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  • Articles  (96)
  • 2020-2022  (65)
  • 1965-1969  (31)
  • Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics  (96)
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  • Articles  (96)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 3 (1968), S. 412-423 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract In order to make use of the available strength of strong fibres, the metal matrix of a composite will have to undergo plastic deformation. The effect that this will have on the fatigue behaviour and damping capacity is discussed, with reference to aluminium reinforced with silica fibres and with stainless steel wires.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 2 (1966), S. 576-596 
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé On étudie un plan orthotrope elastique affaible par une serie des éprouvés paralleles et demiinfinies. Le fluage plastique dans le sens de Dugdale et la fracture fragíle d'après Barenblatt sont étudiés dans le voisinage de 1' extrémité d' une fissure. La transformation de Fourier a étè appliquée directement pour établir 1'équation de Wiener-Hopf de ce problem. La factorisation du noyeau et quelques autres calculs ont éfè achevées pour une classe dense des constantes élastiques, et des resultats asymptotiques ont étè derivés pour les autres constantes. Les solutions montrent les character istiques suivantes compatibles avec des experiences: 1) Dansle cas d' un matériel ductile, si le chargement est suffisament grand,la région plastique subit un accroissement par saur. 2) Pour un matérial fragile le chargement critique est inversement proportionel á la racine carrée de la distance entre les fentes.
    Abstract: Zusammenfassung Die Umgebung des Endes einer von einer periodischen Reihe von parallelen undendlichen Spalten in einer orthotropen elastischen Scheibe, die einem Zug unterworfen wind, wurde untersucht nach dem Modell von Dugdale für ein duktiles Material and nach dem Modell von Barenblatt für ein sprödes Material. Die Anwendung der Fouriertransformierten führt auf die Wiener-Hopfsche Gleichung des Problems. Die Faktorizierung des Wiener-Hopfschen Kerns und einige andere Zwischenrechnungen können für eine gewisse dichte Klasse elastischer Konstanten in geschlossener Form durchgefnhrt werden, and asymptotische Ergebnisse werden für allgemeine Konstanten abgeleitet. Die Lösungen hängen vom Abstand zwischen den Spalten ab and zeigen die folgenden Eigenschaften, die von Versuchen schon bekannt sind: 1) Bei höheren Beanspruchungen einer Scheibe aus duktilen Material wachst die Länge des Fliessgebiets sprungweise: 2) Je kleiner der Abstand zwischen den Schlitzen, desto grösser ist die kritische oder brucherzeugende Belastung einer geschlitzten Scheibe aus sprodem Stoff.
    Notes: Abstract Ductile yielding of the Dugdale type and brittle fracture in the Barenblatt sense are investigated for regions at the ends of a periodic array of semi-infinite parallel cracks in a stretched orthotropic sheet. Direct transform methods are used to obtain the Wiener-Hopf equation. Factorization of the kernel and several other steps of the analysis can be completed in closed form for a dense class of elastic constants, and asymptotic forms are derived for other cases. The solutions depend upon the finite spacing between cracks and have characteristics which have been observed in experiments: 1) At high load levels the yield zone of the ductile material grows in jumps; 2) For a brittle material the allowable load level increases as the speciman size decreases.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of materials science 1 (1966), S. 229-237 
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The reinforcement of metallic matrices with stronger, stiffer ceramic fibres is one approach which is currently being pursued in an effort to develop materials which will withstand the demanding conditions imposed by present-day engineering requirements. The gains in tensile strength which might be obtained by suitable combination of fibres and metal have been widely speculated upon [1] and, recently, experimental verification of some of these predictions has been obtained [2]. As yet, however, little attention has been directed towards assessing the limitations of such composite systems, isolating their causes and attempting to overcome them.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International journal of fracture 4 (1968), S. 371-382 
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé On présente une analyse de la propagation d'une fissure au travers d'une couche de fibres visqueuses reliant deux demi-plans elastiques et orthotropes. Si la fibre possède un comportement linéaire, les composantes de la tension à l'extrémité de la fissure sont singulières et la puissance de la singularité depend de la vitesse de la fissure et des paramètres élastiques et visqueux du problème. Si l'on considère le cas, plus réaliste, d'un comportement non linéaire au voisinage de l'extrémité de la fissure, il en résulte un système de contraintes finies. Quelques modeles simples et particuliers sont proposés et analysés.
    Abstract: Zusammenfassung Eine Analyse von gleichmaessiger Rissausbreitung durch eine Schicht von viskosen Fibern, die zwei orthotropische, elastische Halbebene verbindet, wurde praesentiert. Wenn die Fibern sich linear verhalten, sind die Spannungskomponente an der Risspitze singular. Die Staerke der Singularitaet haengt von der Rissgeschwindigkeit und den viskosen und elastischen Parametern des Problems ab. Ein realistischeres, nicht lineares Verhalten in der Naehe der Risspitze hat ein begrenztes Spannungssystem zur Folge.
    Notes: Abstract Analysis is presented of the steady propagation of a crack through a layer of viscous fibers which join two orthotropic elastic half-planes. If the fibers behave linearly, then the stress components at the crack tip are singular, and the strength of the singularity depends upon the crack speed and upon elastic and viscous parameters of the problem. Consideration of more realistic nonlinear behavior near the crack tip results in a finite stress system. Some particular simple models are postulated and analyzed.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The process of filament-winding and electroforming is a promising method for the fabrication of fibre-reinforcing metal composites. A simple test has been developed to evaluate some electroplating solutions of interest. It has been found that simple salt solutions work satisfactorily with the process but this was not the case with highly complexed solutions. The observed growth behaviour is explained in terms of the differences in micro-throwing power between the solutions investigated.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Experimental mechanics 8 (1968), S. 392-397 
    ISSN: 1741-2765
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract In this paper, the authors report the development of a technique for obtaining controlled impulsive loading over relatively large surface areas. The method involves the initiation of thin layers of spray-deposited explosive by focusing on the surface of the explosive intense light flashes from gas-filled tubes. Total durations of pressure loading as short as 6 μsec have been achieved for 10-in. squares, with detonation being initiated nearly simultaneously at over 100 points in each square inch of surface area.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 13 (1969), S. 369-376 
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Polyvinylpyrrolidone and dextran polysaccharides have been fractionated by ultrafiltration by using newly developed membranes with sharp molecular weight cutoffs. Three different experimental techniques were employed: (a) batch ultrafiltration by using progressively more retentive membranes; (b) continuous ultrafiltration by using several similar membranes in series; (c) variable pressure ultrafiltration by using a single membrane and varying the applied pressure. Ultrafiltration is shown to be a technique of preparative fraction having the advantages of simplicity, speed, and economy.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 8
    Publication Date: 2020-08-14
    Electronic ISSN: 2475-9953
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
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  • 9
    Publication Date: 2020-10-01
    Print ISSN: 0142-9612
    Electronic ISSN: 1878-5905
    Topics: Biology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Medicine
    Published by Elsevier
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  • 10
    Publication Date: 2020-10-01
    Print ISSN: 0022-3093
    Electronic ISSN: 1873-4812
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Elsevier
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