Homogeneity measurements of hardness standards with a nondestructive optical method

Jose G. Suarez-Romero; Eduardo Hernandez-Gomez; Juan B. Hurtado-Ramos

doi:10.1117/12.930294

15 October 2012 Homogeneity measurements of hardness standards with a nondestructive optical method

Jose G. Suarez-Romero, Eduardo Hernandez-Gomez, Juan B. Hurtado-Ramos

Proceedings Volume 8495, Reflection, Scattering, and Diffraction from Surfaces III; 849517 (2012) https://doi.org/10.1117/12.930294
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

Inhomogeneity measurement is an important test of reference materials. In case of hardness reference blocks it consists of measurements at five distributed points on the surface with a test indenter. Unfortunately the test is destructive and it is not possible to use the same point for a new measurement. In this work we propose an optical method to measure the inhomogeneity of hardness standards. As we reported in a recent work, variations of hardness in a steel produces variations in their optical properties, this fact can be used to detect variations in the hardness of blocks with a non-destructive method.

Citation Download Citation

Jose G. Suarez-Romero, Eduardo Hernandez-Gomez, and Juan B. Hurtado-Ramos "Homogeneity measurements of hardness standards with a nondestructive optical method", Proc. SPIE 8495, Reflection, Scattering, and Diffraction from Surfaces III, 849517 (15 October 2012); https://doi.org/10.1117/12.930294

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