Relaxation of residual stresses induced by laser shock processing

C. Rubio-González, A. Garnica-Guzmán, G. Gómez-Rosas

Abstract


The Laser shock processing (LSP) is a new surface treatment technique that
induces a compressive residual stress field. This work examines the effect
of cyclic loading and temperature on the stability of the stress field
induced by LSP on 6061-T6 aluminum samples. Residual stress relaxation due
to cyclic loading is reported for different stress amplitudes and
temperatures. Due to the cyclic creep effect, the residual stress decreases
linearly with the logarithm of the number of cycles, N.

Keywords


Laser shock processing; residual stress relaxation; cyclic loading

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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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Apartado Postal 70-348, Coyoacán, 04511 Ciudad de México.
Tel/Fax: (52) 55-5622-4946, (52) 55-5622-4840. rmf@ciencias.unam.mx