Applications of excimer lasers for machining of fiber-reinforced plastics

摘要

Abstract: Machining characteristics of Fiber Reinforced Plastics(FRPs) using excimer laser have been examined at threewavelengths 193 (ArF), 248 (KrF), and 308 (XeCl) nm inthe fluence ranges up to 80 J/cm$+2$/. At 308 nm, amaximum removal rate was measured to be as high as 15$mu@m/pulse for the plastics with glass fiber and epoxymatrix (glass/epoxy). Irrespective of fibers and matrixmaterials, removal rates increased with applying alonger laser wavelength. Complementary studies werealso conducted on glass/epoxy at 308 nm to examine theeffect of purge gases (He, N$-2$/, Ar) to theirradiated area. It was found that Ar and N$- 2$/ wereeffective for improvement of the kerf quality andreduction of sooty debris around the irradiated area.!6