On the Maximum Depth and Profile of Cut in Pulsed Nd: YAG Laser Machining

Jiang, Chenxi; Lau, W.S.; Yue, Tai Man; Chiang, L.-Y

doi:10.1016/s0007-8506(07)62430-5

Cited by 32 publications

(5 citation statements)

References 6 publications

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“…Jiang et al [10] proposed a theoretical model of the relationship between the laser beam intensity distribution and the interaction of the beam with the material. The laser beam intensity I(ρ, z) at the coordinate point (ρ, z) is given by…”

Section: Coaxial Intensity Measurement Mechanismmentioning

confidence: 99%

On-line depth measurement for laser-drilled holes based on the intensity of plasma emission

Ho¹,

Chiu²,

Chang³

et al. 2014

Meas. Sci. Technol.

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The direct time-resolved depth measurement of blind holes is extremely difficult due to the short time interval and the limited space inside the hole. This work presents a method that involves on-line plasma emission acquisition and analysis to obtain correlations between the machining processes and the optical signal output. Given that the depths of laser-machined holes can be estimated on-line using a coaxial photodiode, this was employed in our inspection system. Our experiments were conducted in air under normal atmospheric conditions without gas assist. The intensity of radiation emitted from the vaporized material was found to correlate with the depth of the hole. The results indicate that the estimated depths of the laser-drilled holes were inversely proportional to the maximum plasma light emission measured for a given laser pulse number.

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Section: Coaxial Intensity Measurement Mechanismmentioning

confidence: 99%

On-line depth measurement for laser-drilled holes based on the intensity of plasma emission

Ho¹,

Chiu²,

Chang³

et al. 2014

Meas. Sci. Technol.

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show abstract

“…Zhou et al [113] have developed a theoretical model for the estimation of depth of cut in terms of material properties and cutting speed for nonmetallic materials using low power CO 2 laser. Jiang et al [ 114] have developed a theoretical model for the prediction depth of machining in sheetmetal due to pulsed Nd:YAG laser. Berrie et al [115] have developed theoretical models for the determination of MRR during CO 2 laser cutting and drilling of perspex.…”

Section: Exact Solution Basedmentioning

confidence: 99%

Laser beam machining—A review

Dubey¹,

Yadava²

2008

International Journal of Machine Tools and Manufacture

732

230

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“…It was also observed that smaller kerf width and smoother surface is obtained by increasing cutting speed and frequency while decreasing the power and gas pressure. Jiang et al (1993) have suggested that the focal spot position should be 1-2 mm below the material surface for maximum depth of cut during their experimental investigation on 6 mm thick mild steel and aluminium sheets using air or argon assist gas in pulsed mode. Nd:YAG laser cutting of 6061 aluminium-alloy samples (0.5 mm thick) with compressed air assist gas was experimentally investigated (Wang et al, 2006).…”

Section: Cuttingmentioning

confidence: 99%