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Proceedings Paper

Detecting molecular stress in metals
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Paper Abstract

In a recent work we reported dependence between the hardness of steels and its refraction complex index, showing that this optical property can be taken as a measure of the electronic interaction inside the molecular structure of metals. If the molecular structure changes then the electronic interaction changes and it is observed as a modification of its refraction index. In this work we present experimental results on steel pieces thermally treated and maintained in rest in the laboratory for material stabilization. The refraction complex index showed variations through a several days period. Variations are attributed to released stresses of the material. The steel sample is thermally treated with a tempering process and tested with an optical setup. The refractive index of the sample is measured through several days, showing variations. The ratio of changes is grater in the first days, showing an exponential decaying in subsequent periods of time.

Paper Details

Date Published: 21 August 2009
PDF: 9 pages
Proc. SPIE 7405, Instrumentation, Metrology, and Standards for Nanomanufacturing III, 74050Z (21 August 2009); doi: 10.1117/12.827005
Show Author Affiliations
Eduardo Hernandez-Gomez, CICATA Querétaro (Mexico)
J. G. Suarez-Romero, Instituto Tecnologico de Querétaro (Mexico)
Juan B. Hurtado-Ramos, CICATA Querétaro (Mexico)

Published in SPIE Proceedings Vol. 7405:
Instrumentation, Metrology, and Standards for Nanomanufacturing III
Michael T. Postek; John A. Allgair, Editor(s)

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