The present paper summaries the results from uniaxial-tension stress-controlled fatigue tests performed at different temperatures up to 650°C on Cu-Be specimens. Two geometries are considered: hourglass shaped and plates weakened by a central hole (Cu-Be alloy). | Nội dung Text Extension of linear elastic strain energy density approach to high temperature fatigue and a synthesis of Cu-Be alloy experimental tests Engineering Solid Mechanics 3 2015 111-116 Contents lists available at GrowingScience Engineering Solid Mechanics homepage esm Extension of linear elastic strain energy density approach to high temperature fatigue and a synthesis of Cu-Be alloy experimental tests F. Berto and P. Gallo University of Padova Departement of management and engineering Stradella San Nicola 3 Vicenza 36100 Italy ARTICLE INFO ABSTRACT Article history The present paper summarizes the results from uniaxial-tension stress-controlled fatigue tests Received October 6 2014 performed at different temperatures up to 650 C on Cu-Be specimens. Two geometries are Accepted 28 January 2015 considered hourglass shaped and plates weakened by a central hole Cu-Be alloy . The Available online motivation of the present work is that at the best of authors knowledge only a limited number 29 January 2015 of papers on these alloys under high-temperature fatigue are available in the literature and no Keywords High-temperature fatigue results deal with notched components. The Cu-Be specimens fatigue data are re-analyzed in Copper-cobalt-beryllium alloy terms of the mean value of the Strain Energy Density SED averaged over a control volume. Fatigue strength Thanks to the SED approach it is possible to summarize in a single scatter-band all the fatigue Notched specimens data independently of the specimen geometry. Strain energy density 2015 Growing Science Ltd. All rights reserved. 1. Introduction In recent years the interest on fatigue assessment of steels and different alloys at high temperature has increased continuously. In fact high-temperature applications have become ever more important in different engineering fields . turbine blades of jet engine nuclear power plant molds for the continuous casting of steel hot rolling of metals. .
