Instrumentation, Measurement, and Metrology

Measurement of residual stresses using local heating and a radial in-plane speckle interferometer

[+] Author Affiliations
Matías R. Viotti

Instituto de Física Rosario (CONICET-UNR), Bvd. 27 de Febrero 210 bis, S2000EZP, Rosario, Argentina

Armando Albertazzi

Universidade Federal de Santa Catarina, Laboratório de Metrologia e Automação, CEP 88040-970, Florianópolis, Santa Catarina, Brazil

Guillermo H. Kaufmann

Instituto de Física Rosario (CONICET-UNR), Bvd. 27 de Febrero 210 bis, S2000EZP Rosario, Argentina and Universidad Nacional de Rosario, Departamento de Física, Facultad de Ciencias Exactas, Ingeniería y Agrimensura, S2000BTP Rosario, Argentina

Opt. Eng. 44(9), 093606 (September 16, 2005). doi:10.1117/1.2050307
History: Received July 23, 2004; Revised December 13, 2004; Accepted February 26, 2005; Published September 16, 2005
Text Size: A A A

We present the application of a portable radial in-plane speckle interferometer to the measurement of residual stresses when local heating is used as a stress relaxation technique. We also present a numerical method to calculate the residual stresses from the radial in-plane displacement field that is measured subsequent to the heating and cooling of the interrogated spot. A finite element analysis of the thermomechanical response of the specimen under test is performed to adjust the model used for residual stress determination. To evaluate the performance of this technique, results obtained using several preloaded specimens are compared with the stress introduced in them. It is shown that the speckle interferometer and local heating combined system allows the measurement of residual stresses with an average deviation of approximately 7% for a range of uniaxial stresses from 25 up to 75% of the yield stress of the material.

Figures in this Article
© 2005 Society of Photo-Optical Instrumentation Engineers

Citation

Matías R. Viotti ; Armando Albertazzi, Jr. and Guillermo H. Kaufmann
"Measurement of residual stresses using local heating and a radial in-plane speckle interferometer", Opt. Eng. 44(9), 093606 (September 16, 2005). ; http://dx.doi.org/10.1117/1.2050307


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.