Laser Material Processing

Steen, W. M.

doi:10.1007/978-1-4471-3609-5

Cited by 372 publications

(70 citation statements)

References 476 publications

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“…Considering the center of the groove (y = 0), the angle of inclination was zero (φ = 0). According to [1], the angle of the cutting front to the vertical axis is about 14 • . By integrating Eq.…”

Section: Formulationsmentioning

confidence: 99%

“…Laser machining is one of the most popular applications of laser material processing [1]. Techniques such as laser grooving have been developed for the new demands in the machining markets.…”

Section: Introductionmentioning

confidence: 99%

“…The investigations include the machining mechanisms of composite materials [3], acoustic sensing of grooving depth [4,5] and the heat transfer due to cutting fluids with a compound jet of air/water in laser grooving [6]. Laser grooving with a strong swirling flow has been reported and this characteristic provides an efficient removal momentum according to [1,8]. Therefore, an off-axial gas jet as illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

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An investigation of the surface contours in laser grooving

Chuan

Lin

2005

Int J Adv Manuf Technol

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The surface contours generated in laser grooving by a compound jet nozzle on mild steels have been characterized experimentally and theoretically in this study. A side-jet grooving nozzle was designed with various attacking angles to achieve the optimum conditions on the material removal rate and surface roughness for this technique. The grooving depth was estimated through the formulation of the energy equations with the consideration of exothermic heat and the grooving contours were measured by the laser displacement sensor. The results show a close agreement between the theoretical prediction and experimental testing. The process characteristics and the parametric analysis were also discussed.

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Section: Formulationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An investigation of the surface contours in laser grooving

Chuan

Lin

2005

Int J Adv Manuf Technol

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“…However, incomplete removal and badly roughened surface were found after the process. Tarpey et al used 10.57 and 10.63 µm continuous CO 2 to strip the polyimide fiber but also failed. They found that many fibers were not properly stripped instead of charred, and some of fibers were even seen with occasional "pinholes" in the glass [9].…”

Section: Introductionmentioning

confidence: 95%

Laser stripping of fiber Bragg grating polymer coating using pulsed 10.6 μm TEA CO2 laser

Zhu

Lei

Dai

et al. 2010

Front. Optoelectron. China

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Stripping the polymer coating is the first step for the fabrication of fiber Bragg grating (FBG). The conventional stripping approaches are labor intensive and time consuming. Because of high precision and throughput, as well as non-contacting, laser stripping obtained more and more attention in recent years. This paper reports the primary experiments on laser stripping of polymer coating from FBG using pulsed transverse electric atmospheric (TEA) CO 2 laser with wavelength of 10.6 μm and pulse width of 2 μs. Using cylindrical lenses, the coating can be removed thoroughly at one time. The theoretical analysis and experimental investigations were carried out. The influence of laser fluence and pulse number on stripping quality has been investigated. Scanning electron microscopy (SEM), optical microscope, and electrical balance were employed to detect the quality removal. The result shows that excellent quality removal is possible by using pulsed 10.6 μm TEA CO 2 laser.

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“…These lasers have short wavelengths of 1.06 mm, which may outperform CO 2 lasers for metallic materials that absorb much better at short wavelength. Nd: YAG lasers are favourable for sintering carbide ceramics owing to lower reflectivity and higher surface adsorption [7,8]. The feasibility study of SLS by Vaucher et al [9] investigated the Nd:YAG laser sintering of metal and ceramic composites including aluminium alloy/silicon carbide, titanium/silicon carbide, and titanium/graphite and single layers and multilayers of metal/ceramic composites were successfully produced.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of CO₂ and Nd:YAG Lasers for the Selective Laser Sintering of HAPEX®

Savalani

Hao

Harris

2006

Proceedings of the Institution of Mechanical Engineers, Part B:

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• This is an article from the journal, Proceedings of the IMechE, DOI: 10.1243/095440505X32986Abstract: This paper evaluates and compares the performance of a CO 2 and Nd:YAG laser for the selective laser sintering (SLS) of a commercial hydroxyapatite reinforced polyethylene (HA-HDPE) bioactive ceramic polymer composite material. Single-line and layer specimens were produced to compare the effects of different lasers on the material sintering. It was found that the processing window was much larger for the CO 2 laser as compared to the Nd:YAG laser. Furthermore, the Nd:YAG processing window was highly dependent on the pulse width and pulse repetition rate parameter settings. Furthermore, the processing windows for both the laser systems were affected by the particle size of the HA-HDPE powders. The degree and mechanism of particle fusion existing in the composites layers were greatly influenced by the laser source and particle size. The results presented in this work clearly indicate that the CO 2 laser would present a better performance than the Nd:YAG laser for the SLS of HAPEX Ò in terms of operation range, speed, processing efficiency, and, subsequently, greater potential as an SLS processing method for bioactive implant products.

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Laser Material Processing

Abstract: Library ofCongress Cataloging-in-Publication Data Steen, W.M.Laser material processing / William M. Steen. --2nd ed.p. COL Includes bibliographical references.

Cited by 372 publications

References 476 publications

An investigation of the surface contours in laser grooving

An investigation of the surface contours in laser grooving

Laser stripping of fiber Bragg grating polymer coating using pulsed 10.6 μm TEA CO2 laser

Evaluation of CO₂ and Nd:YAG Lasers for the Selective Laser Sintering of HAPEX®

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Laser Material Processing

Abstract: Library ofCongress Cataloging-in-Publication Data Steen, W.M.Laser material processing / William M. Steen. --2nd ed.p. COL Includes bibliographical references.

Cited by 372 publications

References 476 publications

An investigation of the surface contours in laser grooving

An investigation of the surface contours in laser grooving

Laser stripping of fiber Bragg grating polymer coating using pulsed 10.6 μm TEA CO2 laser

Evaluation of CO2 and Nd:YAG Lasers for the Selective Laser Sintering of HAPEX®

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Product

Resources

About

Evaluation of CO₂ and Nd:YAG Lasers for the Selective Laser Sintering of HAPEX®