Evaluation of piezoresistivity in heat treated 5A06 Al-Mg alloy due to applied stress using eddy current method
Advanced Materials Research, ISSN: 1022-6680, Vol: 548, Page: 377-381
2012
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Conference Paper Description
Eddy current method can be used for non-destructive assessment of residual stress. In order to relate electrical conductivity change to the residual stresses in the welded joints, piezoresistivity of 5A06 has been investigated using samples heat treated at 250°C and 400°C. These samples represent weld zones with different thermal exposure. A directional eddy current probe with a Hall Effect sensor was used to evaluate stress coefficient of electrical conductivity due to applied uniaxial tensile load on the samples. The electromagnetic forward model was solved using FEM package and linear conductivity inversion was formulated to express probe output in terms of electrical conductivity. The piezoresistivity coefficients of samples, calculated from the derivative of stress-conductivity relation, were compared. The results indicate that coefficients vary inversely with annealing temperature. © (2012) Trans Tech Publications, Switzerland.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84868115595&origin=inward; http://dx.doi.org/10.4028/www.scientific.net/amr.548.377; https://www.scientific.net/AMR.548.377; https://www.scientific.net/AMR.548.377.pdf; http://www.scientific.net/AMR.548.377; http://www.scientific.net/AMR.548.377.pdf; https://dx.doi.org/10.4028/www.scientific.net/amr.548.377
Trans Tech Publications, Ltd.
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