Medición del módulo de Young en el hule látex usando ESPI

J.A. Ra, as. , R. Rodríguez-Vera, A. Martínez

Abstract


It is well know that the module of elasticity or Young's module relates the stress to the strain that suffers a object, which is yielded to external loads. In this work we show the implementation of the Electronic Speckle Pattern Interferometry (ESPI) as a technique to measure deformations on a piece of latex when it is subjected to external loads. Along with the measurement of tension loads (by means of a digital dynamometer), we determine the Young's module of the object under test. The value determined by using the ESPI technique is compared with that obtained in a device designed and constructed in our laboratory (which is equivalent to a commercial testing machine). It is demonstrated the veracity of the ESPI technique applied as an interferometric extensometer.

Keywords


Optical metrology; speckle interferometry; elastic constants

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Revista Mexicana de Física

ISSN: 2683-2224 (on line), 0035-001X (print)

Bimonthly publication of Sociedad Mexicana de Física, A.C.
Departamento de Física, 2o. Piso, Facultad de Ciencias, UNAM.
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