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This study investigated the perforation time of polyamide 6.6 using fiber lasers at two different wavelengths: 1070 and 1943 nm. The novelty of this research lies in the comparison of perforation times at equivalent laser irradiances on the polymer sample with two different colors of polyamide 6.6: natural and black. The results revealed that, at c...
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Context 1
... increase of the hole size with laser power could be observed over all tested samples and laser wavelengths. Figure 3 shows some of the experimental results of transmitted power over time for different samples of naturalcolored PA 6.6. The left side (respectively the right side) shows the measurement performed at a laser wavelength of 1070 nm (respectively 1943 nm) with an irradiance on the sample of 0.68 kW/cm 2 (respectively 0.8 kW/cm 2 ). ...
Context 2
... power is observed. After approximately 10 s, the first perforation of the sample is observed. The behavior is similar to the irradiance with a 1070 nm fiber laser. Comparing the two perforation measurements, better uniformity of the measurement curves is found when irradiating with a 1943 nm fiber laser. The same measurements as those shown in Fig. 3 were performed in a second round, this time using black-colored PA 6.6. The experimental results of transmitted power over time for different samples are shown in Fig. 4 for an irradiance of 0.82 kW/cm 2 on the sample. The measurement curves follow a similar temporal evolution to the previous measurements with natural-colored PA 6.6. ...
