Abstract
This paper deals with a local laser heating technique using photochromic-dye. He-Cd laser was used as excitation light source to actively control the radiation absorption coefficient of the dye added polymer material, and Ar^+ laser was used as heating light source. Both experimental and numerical simulation studies were carried out to elucidate the characteristics of the present technique. The results showed that the radiation absorption coefficient distribution in the sample thickness direction and the color attenuation effect of the dye during the heating had large effect on the temperature increase. According to the obtained knowledge, laser transmitting welding process for transparent polymer material was successfully realized.
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