JLA Vol:4 Iss:3 (Probing Plume Protection Problems in the Health Care Environment)
Authors:
John M. Kokosa
Marcus D. Benedetto
GMI Engineering & Management Institute, Flint, MI 48504, Ophthalmic Research, P.O. Box 560933, Orlando, FL 32856This paper presents pragmatic particulars pertaining to plume protection problems with special emphasis on the health care environment. Practical approaches to optimizing protection are discussed with an eye toward facilitating the safety of personnel and the general health care environment from particulates, parasites, viruses and other undesirable entities, elements and compounds.
$25.00
JLA Vol:4 Iss:3 (Proposed Z136.1 Revision Nears ANSI Approval)
Authors:
Ami Kestenbaum
Secretary Z136 Accredited Standards Committee$25.00
JLA Vol:4 Iss:3 (Recommendations for Safe and Appropriate Use of Lasers in Dentistry in Face of Rising Concerns)
Authors:
Leo J. Miserendino
Elliot Abt
David Harris
Harvey Wigdor
The Chicago Dental Laser Institute$25.00
JLA Vol:4 Iss:3 (Technical Training Approach — Safe operations, maintenance and service of lasers in manufacturing)
Authors:
Phillip Hoffman
General Motors Corporation$25.00
JLA Vol:4 Iss:3 (Using the Proposed ANSI Z136.1‐1992 Standard)
Authors:
R. James Rockwell
Rockwell Laser Industries$25.00
JLA Vol:4 Iss:3 (Where We Are Today: International Update)
Authors:
Jerry Glen
Union, Kentucky$25.00
JLA Vol:5 Iss:1 (Determining the Spot Size and Gaussian Distribution Coefficient of Pulsed Laser Beams Using KAPTON Films)
Authors:
Z. Y. Wang
J. T. Liu
D. M. Hirak
D. C. Weckman
H. W. Kerr
Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1 CanadaThe laser beam spot size at the focal point of a pulsed laser is a critical parameter in laser materials processing, but accurate determination of the spot size is very difficult, particularly for high power pulsed lasers. In this study, effective methods were developed for such determination, by interpretation of measured hole diameters produced in Kapton film using pulsed laser beams with multimode or Gaussian‐like mode structures. Analysis of the hole‐makin...
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JLA Vol:5 Iss:1 (Heat Flow in Laser Die Blank Welding)
Authors:
Y.‐S. Yang
C. R. Hsu
C. E. Albright
Y. KurodaLaser welded die blanks are finding increased usage in many industrial applications. This investigation was undertaken to establish a simplified means of calculating thermal cycles experienced in the fusion and heat affected zones on laser welds typically used in die blank welding. A planar solution domain perpendicular to the direction of travel was selected to simplify the finite element calculations. The resulting calculation technique provided reasonably accurate prediction of the thermal cycles measured by Moon and Metzbower, and the size of fusion zones and heat affected zones o...
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JLA Vol:5 Iss:1 (Intercomparison between a C‐Series Reference Calorimeter and Two Commercially Available Laser Power/Energy Meters)
Authors:
Kirsti Leszczynski
Finnish Centre for Radiation and Nuclear Safety, SF‐00101 Helsinki, Finland
Robert W. Faaland
Center for Devices and Radiological Health, Rockville, Maryland 20857An intercomparison between a C‐series reference calorimeter and two commercially available laser power/energy meters has been undertaken. The intercomparison has been performed at three visible laser wavelengths (488.0 nm, 514.5 nm, and 632.8 nm) and one near infrared laser wavelength (1064.0 nm). Power and energy levels presented to the instruments ranged from approximately 0.1 mW to 20 W and from 0.9 mJ to 16 J. One of the power/energy meters has a volume ab...
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JLA Vol:5 Iss:1 (LASER CUTTING OF STEELS: A physical and chemical analysis of the particles ejected during cutting. Part II)
Authors:
J. Powell
A. Ivarson
C. MagnussonThis paper is a continuation of work published in an earlier edition of this journal[1]. Both papers deal with the results of a detailed analysis of the particles ejected from the cut zone during laser cutting of mild and stainless steels. Reference 1 presented the thermochemical data and discussion generated by the experimental investigation. This paper concentrates on the physical characteristics and metallography of the particles. Analysis techniques used included: Scanning Electron Microscopy, optical microscopy, metallography and particle sizing. The results from this extensive analysis have enabled the authors...
$25.00