Abstract
This paper presents the optimal conditions for the ultraviolet laser percussion drilling of alumina materials intended for use in heat sinks. The Taguchi method and grey relational analysis, along with the consideration of multiple quality characteristics, were applied for determining the optimal parameters. The entrance diameter and taper angle of the drilled hole were affected by the material processing parameters, including laser power, pulse duration, focal plane position, and number of pulses. The Taguchi method and grey relational analysis were used for assessing the effects of the operational parameters on multiple performance characteristics. Nine experiments based on an orthogonal array were performed. According to the results, the optimal process parameters were as follows: laser energy density, 3.82 J/cm2; focal plane position, 0.1 mm; number of pulses, 20 shots; and single pulse duration, 3 ms. Analysis of the grey relational grade revealed that the focal plane position was the most dominant parameter.
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The authors thank the Ministry of Science and Technology of Taiwan for financially supporting this research under Contract No. MOST 103-2221-E-018-004-MY2.
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Chen, MF., Hsiao, WT., Wang, MC. et al. Multi-performance characterization analysis of diameter and taper angle on alumina ceramic via using pulsed ultraviolet laser percussion drilling method. Opt Quant Electron 49, 383 (2017). https://doi.org/10.1007/s11082-017-1222-1
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DOI: https://doi.org/10.1007/s11082-017-1222-1