Titlebook: Creep in Structures; 3rd Symposium, Leice A. R. S. Ponter,D. R. Hayhurst Conference proceedings 1981 Springer-Verlag, Berlin, Heidelberg 19

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Tensor Functions Approach to Creep Laws After Prestrain,tress and prestrain tensors is considered. A particular form of the creep law is proposed regarding the triaxial creep and a form of the law is discussed accounting for the prestrain and creep induced anisotropy.

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On the Creep Modified Shakedown Limit,show that the creep modified shakedown limit is applicable to a small class of materials which exhibit near perfectly plastic behaviour and is inapplicable to strongly strain hardening alloys such as the austenitic stainless steels.

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Conference proceedings 1981eview of progress in structural creep initiated by the previous symposia held at Stanford University in 1960 and Chalmers University in 1970. The thirty eight papers and their discussions cont­ ained in this volume testify to the vigour of research into the creep of structures at the present time. D

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On Constitutive Relations and Failure Criteria of an Austenitic Steel under Cyclic Loading at Eleva the dwell period. The implications for structural behaviour and the prediction of stress relaxation are discussed..Some of the tests have been extended to failure of the specimen and examined by optical and scanning microscopy. The failure modes are described and failure times are compared with corresponding behaviour under monotonic loading.

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Review of Session I,al, Engineering, Computational and Testing approaches, taken in order of presentation. They are all important to the development of our subject and, as shown in the first opening lecture by F.K.G. Odqvist, they have all been used since our field began to be cultivated early in this century.