Titlebook: Colloquium on Fatigue / Colloque de Fatigue / Kolloquium über Ermüdungsfestigkeit; Stockholm May 25–27, Waloddi Weibull (Dr. Phil. Professo

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Fibroid

Effect of simultaneous cyclic variation of stress and temperature on a high temperature material,ngines, it has so far been customary to adopt creep tests and also, occasionally, fatigue tests at high temperatures. Thus, T. and M. [.], for example, have carried out extensive bending fatigue tests on a great number of high temperature alloys at 1,200 and 1,500° F (650 and 815° C).

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Physical and statistical aspects of cumulative damage,amage”, can be approached either from the point of view of a definite underlying physical process of progressive damage, or by assuming that the large number of variables known to affect the fatigue life in rather complex ways can only be dealt with summarily by simple probability considerations or,

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,über Verformungserscheinungen in St?hlen bei der Wechselbeanspruchung,och genauere Vorstellungen über die Bedingungen, durch die der Vorgang des Dauerbruehs oder das Auftreten der ersten Anrisse eingeleitet wird, da sowohl strukturelle ?nderungen als auch Verformungserscheinungen in einem Werkstoff w?hrend der Wechselbeanspruchung eintreten. Vielfach werden daher phys

MUTED

The effect of high loads on fatigue,ative damage rule was small. This supposition is supported by results of tests made at the Aluminium Laboratories [.] on plain aluminium alloy specimens, when a single initial stretch in axial tension slightly reduced the fatigue strength in rotating bending, the maximum reduction being 12%, see tab

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,Modifications de texture cristalline produites par des efforts alternés,entrepris [.] des essais en utilisant la méthode de focalisation des Rayons X de Guinier-Thénevin qui permet d’apprécier des variations d’orientation cristalline de l’ordre de la minute d’angle, le matériau employé étant un monocristal d’Al raffiné (99,99) soumis à des tractions ondulées. Un cristal

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Fatigue of steels at constant strain amplitude and elevated temperature,sses or other high frequency stresses generally superimposed on a fairly steady mean stress. This is the type of fatigue which may occur for instance in a vibrating gas turbine blade. The complications compared with fatigue at ordinary temperatures are the influence of the temperature and of a time

cardiovascular

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