Method of strengthening through real-time coupling of electrical pulses and laser shock waves

A method of strengthening through real-time coupling of electrical pulses and laser shock waves, wherein an initial time and a duration of the electrical pulses, an initial time and a duration of laser beams produced by a laser, and a moving speed of a workpiece are adjusted to be matched with one another, so that the electrical pulses and the laser shock waves are coupled in real time for strengthening to greatly improve strength and plasticity of the workpiece, and the method specifically comprises the following steps:

• (1) adjusting a waveform of the electrical pulses;
• (2) adjusting a frequency of the electrical pulses and a frequency of the laser respectively to f1 and f2, wherein f1=m*f2, wherein m is an integer;
• (3) adjusting a pulse width of the electrical pulses and a pulse width of the laser respectively to τ1 and τ2, wherein τ1>τ2;
• (4) adjusting parameters of the electrical pulses, comprising adjusting a current amplitude to I0, a full width at half maximum (FWHM) to τ3, and a current value to I0/2 at τ1 and τ4;
• (5) starting the electrical pulses first, and then turning on the laser at τ2 to produce the laser shock waves, wherein τ2≥τ1 and τ2≤τ4−6τ2;
• and
• (6) performing laser shock peening/processing (LSP) with the laser shock waves from a start point and meanwhile, moving the workpiece along a set LSP path to an end point at a speed of V=D*f2*(1−p %);
• turning off the laser when the LSP at the end point is completed;
• and turning off an electrical pulse generator so that the LSP process is finished, wherein D is a diameter of an LSP round spot or a side length of an LSP square spot, and p % is an overlapping rate of the spot.