Most manufacturing processes generate residual stresses inside the materials and components. Stress relief heat treatments can be used to reduce the magnitude of the residual stresses: by uniformly heating a structure to a sufficiently high temperature, and then uniformly cooling it, residual stresses can be relaxed. This process generally requires the insertion of the entire component in a large furnace, for a fairly long period of time. In this paper, the possibility of using a high power laser source to locally relieve residual stresses is studied; this has the advantage of calibrating and confining the relief process just to the laser affected area. An experimental set-up was tested on an aluminium specimen, and the preliminary results are reported in this paper.

Feasibility of Local Stress Relaxation by Laser Annealing and X-ray Measurement / Barile, Claudia; Casavola, Caterina; Pappalettera, Giovanni; Pappalettere, Carmine. - In: STRAIN. - ISSN 0039-2103. - 49:5(2013), pp. 393-398. [10.1111/str.12045]

Feasibility of Local Stress Relaxation by Laser Annealing and X-ray Measurement

BARILE, Claudia;Casavola, Caterina;PAPPALETTERA, Giovanni;PAPPALETTERE, Carmine
2013-01-01

Abstract

Most manufacturing processes generate residual stresses inside the materials and components. Stress relief heat treatments can be used to reduce the magnitude of the residual stresses: by uniformly heating a structure to a sufficiently high temperature, and then uniformly cooling it, residual stresses can be relaxed. This process generally requires the insertion of the entire component in a large furnace, for a fairly long period of time. In this paper, the possibility of using a high power laser source to locally relieve residual stresses is studied; this has the advantage of calibrating and confining the relief process just to the laser affected area. An experimental set-up was tested on an aluminium specimen, and the preliminary results are reported in this paper.
2013
Feasibility of Local Stress Relaxation by Laser Annealing and X-ray Measurement / Barile, Claudia; Casavola, Caterina; Pappalettera, Giovanni; Pappalettere, Carmine. - In: STRAIN. - ISSN 0039-2103. - 49:5(2013), pp. 393-398. [10.1111/str.12045]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/1289
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