Resumen

RAYAS, J.A.; RODRIGUEZ-VERA, R.  y  MARTINEZ, A.. Medición del módulo de Young en el hule látex usando ESPI. Rev. mex. fis. [online]. 2003, vol.49, n.6, pp.555-564. ISSN 0035-001X.

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.

Palabras llave : Optical metrology; speckle interferometry; elastic constants.

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