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  • Polymer and Materials Science  (2,200)
  • Physics  (486)
  • 1970-1974  (2,200)
  • 1974  (2,200)
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  • 1970-1974  (2,200)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 5 (1974), S. 49-50 
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Stress-Rupture Testing of Tubing under Superimposed Steam Corrosion Attack. Experimental Set-Up, Method, and Results of Incoloy Alloy 800 Tube Long-Time Testing. A special experimental set-up was built for long-time stress-rupture testing of tubing under biaxial stresses and superimposed steam corrosion attack. The principles of its construction and the applied testing method, but also the results of Incoloy Alloy 800 thin wall tube testing at constant load, pressurized with argon or steam, are described.At 650 and 700 °C the mechanical properties (strength, ductility) were not influenced by the superimposed corrosion attack. The increase in surface and bulk oxidation, varying with the stress level, is explained by the influence of creep rate and the state of surface oxidation at the time of exposure when the tertiary creep is beginning to be effective.
    Notes: Zur Messung der Zeitstandfestigkeit von Rohrmaterial bei dreiachsiger Beanspruchung und überlagerter Heißdampf-Korrosion wurde ein eigener Prüfstand erstellt. Es werden die Prinzipien seines Aufbaues und der angewandten Prüfmethode sowie die Ergebnisse von Zeitstand Untersuchungen an dünnwandigen Rohren der Legierung Incoloy 800 in Argon und überhitztem Wasserdampf beschrieben.Sie zeigen, daß bei 650 und 700 °C die Festigkeit und die Dehnung dieser Legierung durch den oxidativen Angriff nicht verändert werden. Die verstärkte Korrosion wird hinsichtlich ihres unterschiedlichen Ausmaßes und Oxidwachstums durch den Einfluß der Kriechgeschwindigkeit und des Oxidationszustandes der Oberfläche zum Zeitpunkt des Einsetzens des tertiären Abschnittes der Kriechkurve erklärt.
    Additional Material: 10 Ill.
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  • 5
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 6
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 5 (1974) 
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 5 (1974), S. 72-77 
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Torsional cycling of cold pressure welded zirconium/steel-specimens. Low-cycle fatigue of cold pressure welder zirconium/steel-specimens has been studied in cyclic torsion. The critical number of cycles Ncr instead of the number of cycles to final failure Nf is taken for evaluation of the endurance life in low-cycle fatigue. Ncr is defined as the number of cycles leading to the formation of a crack which noticeably weakens the specimen. The relationship NKra · Δγ = const. is achieved for bonded specimens. The results have been correlated with the observations in unwelded zirconium and steel to predict the endurance life of bonded specimens. Microstructure studies revealed crack initiation at points of intense slip in zirconium. Fracture occured always in zirconium outside the welded zone.
    Notes: Plastoermüdung (low-cycle fatigue) an kaltpreßgeschweißten Zirkonium/Stahl-Proben wurde im Torsionswechselversuch untersucht. Zur Bestimmung der Lebensdauer bei Plastoermüdung wurde die kritische Lastspielzahl NKr anstelle der Bruchlastspielzahl NB verwendet. NKr ist die Lastspielzahl, bei der Risse auftreten, die die Probe merklich schwächen. Der Zusammenhang NKra. Δγ = C wurde auch für geschweißte Proben gewonnen. Die Ergebnisse wurden mit den Beobachtungen an ungeschweißten Proben in Zusammenhang gebracht, um die Lebensdauer der geschweißten Proben voraussagen zu können. Mikroskopische Untersuchungen zeigten die Anrißbildung an Stellen intensiver Gleitung in Zirkonium. Der Bruch erfolgte immer außerhalb der Schweißnaht im Zirkonium.
    Additional Material: 9 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 5 (1974), S. 138-142 
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Holographic Vibration Analysis. With the time averaging method of the holographic interferometry it is possible to measure the vibration amplitudes of models excited by natural or forced vibration. The models must not be plane and only opaque reflecting. In a few examples we demonstrate the determination of stress distributions on complicated solid structures (value plates) and fluid-solid systems. Such vibration states also occur after short time loading in the following steady state. We use a periodic excitation with frequencies between 100 Hz and 10 kHz and vibration amplitudes of about 1 μm. Edge stresses of about 10 kp/cm2 are measured on a vibrating valve plate with a thickness of 0,5 mm. The investigation of fluid-solid systems shows a diminuition of the natural frequency caused by the fluid component.
    Notes: Mit dem Zeitmittelungsverfahren der holographischen Interferometrie lassen sich bekanntlich die Schwingungsamplituden von Bauteilen, die durch Eigenschwingungen oder erzwungene Schwingungen hervorgerufen werden, auch an nicht ebenen und nicht spiegelnden Modellen bestimmen. Es wird gezeigt, wie man bei komplizierten geometrischen Strukturen (Ventilplatten) sowie festflüssigen Systemen Schwingungszustände quantitativ ermitteln kann, wie sie auch nach kurzzeitiger Belastung im darauf folgenden eingeschwungenen Zustand auftreten. Es wurde eine periodische Anregung mit einer Frequenz zwischen 100 Hz und 10 kHz und eine Schwingungsamplitude von ca. 1 μm benutzt. Dabei wurden Biegespannungsamplituden von ca. 10 kp/cm2 bei einer 0.5 mm dicken Ventilplatte gemessen. Bei den untersuchten festflüssigen Systemen wurde eine Verringerung der Eigenfrequenz durch die flüssige Komponente festgestellt.
    Additional Material: 12 Ill.
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