| 摘要 |
<p>The method comprises weakening a bonding interface (30) between a metal part (10) and a composite material part (20) striking an outer surface (10a) of the metal part with a set of laser pulses (41), where each of the laser pulses has power, wavelength and time. The laser pulses are distributed on an entire portion of the metal part so as to create a set of local cracks or delaminations in the bonding interface. The metal part has thickness of 0.1-1 mm. Each of the laser pulses are emitted with a wavelength of 900-1500 nm, an energy of 2-4 J and a duration of 3-10 ns. The method comprises weakening a bonding interface (30) between a metal part (10) and a composite material part (20) striking an outer surface (10a) of the metal part with a set of laser pulses (41), where each of the laser pulses has power, wavelength and time. The laser pulses are distributed on an entire portion of the metal part so as to create a set of local cracks or delaminations in the bonding interface. The metal part has thickness of 0.1-1 mm. Each of the laser pulses are emitted with a wavelength of 900-1500 nm, an energy of 2-4 J and a duration of 3-10 ns. The method further comprises: propagating the local cracks or delaminations in the bonding interface by the application of a mechanical effort on the metal part, heat treatment or by application of ultrasounds after the weakening step; and generating residual stresses on the outer surface of the metal part after the weakening step. The step of generation of residual stresses is carried out by a treatment consisting of a sanding, a shot-blasting and a laser application. The composite material part is made out of material consisting of a composite material with organic matrix, a composite material with ceramic matrix and a composite material with carbon.</p> |
