Optimal design and experimental investigation of the material-nanostability and deformation behaviour of Al-5.78Zn-1.45Cu-2.49 Mg, Al-5.6Zn-2.5Mg-1.6Cu and Al-Mg-0.6Si alloys under cyclic-loading for ultra-precision structural applications

Abstract

Abstract This paper presents the design and construction of a new simple test facility for the investigation and testing of the deformation behaviour of material properties, namely plastic monolithic, inelastic, elastic and spring joints under cyclic loadings. Test samples were prepared in various machining directions (orthogonal and longitudinal) of Al-5.78Zn-1.45Cu-2.49 Mg, Al-5.6Zn-2.5Mg-1.6Cu and Al-Mg-0.6Si aluminium alloys. As a pulling force for sample deformation, an electromagnet unit was used. The test load range was between 0.2N to 200N, increased by a programmable factor of 1.1-1.4 for a train time of 900s. Two capacitive sensors and interferometers sensors mounted at different sample locations were used to test the sample deformation with and without loading. In a temperature-stable housing that offers isothermal conditions, the overall measuring machine is integrated. The calculated parameters include plastic and inelastic deformation.