The grating interferometry and the strain gauge sensors in the magnetostriction strain measurements.

The paper presents newly developed measuring systems and theirs applications for testing of the strain distribution in the magnetostrictive materials. The system uses three measurement techniques: strain-gauge sensor for local strain measurement, grating interferometry for determination of inplane displacement/strain distribution and classical two-beam interferometry for outt-of-plane displacement and total elongation measurement. [ABSTRACT FROM AUTHOR]