A tension—torsion creep-rupture testing machine

Abstract

The paper discusses the design and construction of a high-temperature creep machine capable of applying combined tension and torsion loadings. The design utilizes an air bearing and pinned universal joints to achieve axiality of loading. An extensometer is described which transmits the deformation of the specimen gauge length outside the furnace and allows the continuous measurement of axial and shear strains to be made using linear variable differential transducers at room temperature. Results of elastic and creep tests are presented which show the performance of the machine to be satisfactory.