Options
Bridging Length Scales in the Analysis of Transient Tests for Metallic Materials
Date Issued
01-01-2019
Author(s)
Gokhale, Aditya
Indian Institute of Technology, Madras
Jain, Jayant
Prasad, Rajesh
Han, Heung Nam
Abstract
The transient data obtained during stress relaxation test of polycrystalline materials has broader implications. The test is influenced by the material length scale. Efforts to mathematically bridge data at different length scales is scarce. In the present work, it is attempted to modify a recently proposed stress relaxation model with additional coefficients to accommodate the mechanical behavior at different length scales. The macroscale stress relaxation test was performed using a tensile testing machine, whereas the micro- and nanoscale specimens were tested using indentation technique. Assuming power law rate behavior, a scaling relation is derived initially to correlate the indentation pressure and flow stress.
Volume
141