Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Effective X-Ray Elastic Constant Measurement for In Situ Stress Measurement of Biaxially Strained AA5754-O

Published

Author(s)

Mark A. Iadicola, Thomas H. Gnaeupel-Herold

Abstract

A method of measuring biaxial stress-strain curved for sheet metal samples subjected to large plastic strains is described for one example aluminum alloy (AA 5754-O). The method uses a prtable X-ray diffraction (XRD) system to measure in situ stresses during tensile deformations. Calibration of X-ray elastic constants and the effects of texture and itergranularstresses are discussed. Comparison of uniaxial data measured using XRD and standard methods show good agreement, and biaxial stress-strain results show good repeatability. Accurate measurement of stresses by X-ray diffraction requires accurate X-ray elastic contants. Calbiration experiments are one method to determine these for a specific material in a specific condition. Typically elastic uniaxial tension or bending tests are used to determine the required effective X-ray elastic constants.
Citation
Materials Science and Engineering
Volume
545

Citation

Iadicola, M. and , T. (2012), Effective X-Ray Elastic Constant Measurement for In Situ Stress Measurement of Biaxially Strained AA5754-O, Materials Science and Engineering, [online], https://doi.org/10.1016/j.msea.2012.02.100 (Accessed November 28, 2022)
Created May 30, 2012, Updated November 10, 2018