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Keywords: lasers
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eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1998
ISBN-10: 0-8031-2476-7
ISBN: 978-0-8031-2476-9
... in a small test machine with an air bearing to reduce friction in the moving grip. Strain was measured directly on the specimen with a laser-based interferometric technique that used two tiny reflective indentations as gage markers. The entire stress-strain curve was recorded. In addition, five...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1997
ISBN-10: 0-8031-2403-1
ISBN: 978-0-8031-2403-5
... The Interferometric Strain/Displacement Gage (ISDG) is an established laser-based technique that measures the relative displacement between two gage points on a specimen surface. The gage points are reflective markers illuminated with a low-power He-Ne laser to form interference patterns...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1992
ISBN-10: 0-8031-1469-9
ISBN: 978-0-8031-1469-2
... A procedure for real-time measurement of the opening displacement of small fatigue cracks is reviewed. The method employs a computerized, laser-based, interferometric strain/displacement gage (ISDG) to monitor the relative displacement between two tiny indentations placed across small surface...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1992
ISBN-10: 0-8031-1414-1
ISBN: 978-0-8031-1414-2
.... The effect of different mixing regimes prior to atomization was also investigated for Windfall and Nalcotrol. Droplet atomization lasers pumps adjuvants drift nozzles drop spectra Andrew C. Chapple I, Roger A. Downer, and Franklin R. Hall EFFECTS OF PUMP TYPE ON ATOMIZATION OF SPRAY...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1991
ISBN-10: 0-8031-1461-3
ISBN: 978-0-8031-1461-6
... The risk of an oxygen enriched airway fire during oropharyngeal surgery with a laser is supposedly minimized by the use of a laser-ignition-resistant endotraoheal tube such as those made by Bivona, Mallinckrodt, Baxter Norton, Sheridan, or Xomed; or Merocel, a tube wrap marketed as laser...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1990
ISBN-10: 0-8031-1455-9
ISBN: 978-0-8031-1455-5
... Applications of laser-excited fluorescence can be found in numerous areas of criminalistics, including document examination, fiber analysis, serology and latent fingerprint development. This paper focuses on the latter application. The present mature procedures for laser fingerprint detection...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1990
ISBN-10: 0-8031-1455-9
ISBN: 978-0-8031-1455-5
.... In this paper, recent results from our laboratory are presented for the successful implementation of the remaining dynamic and steady-state fluorimetric measurements in conjunction with fiber-optic sensing. lasers fiber-optic sensing lifetimes polarization rotational diffusion rates luminescence...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1989
ISBN-10: 0-8031-1288-2
ISBN: 978-0-8031-1288-9
...-enriched atmosphere phenomenon of surface fiber flame propagation on reusable surgical textiles. Recommendations are made for minimizing the risk of surgical fires, including special precautions for prevention of fires from surgical lasers. fire surgery medical devices surgical drapes oxygen...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1988
ISBN-10: 0-8031-4481-4
ISBN: 978-0-8031-4481-1
... circular (10μ) pits in the surface. These pits were also associated with macroscopic damage features due to threshold testing. optics lasers mass spectrometry Manuscript Received 12/16/87/sar A Chemical Precursor to Optical Damage? Studies by Laser Ionization Mass Spectrometry N. S. Nogar a n d...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1987
ISBN-10: 0-8031-0943-1
ISBN: 978-0-8031-0943-8
... A one-dimensional imaging probe was used to measure samples of the spray distribution produced by four different rotary atomizers operating at several different flow rates and rotary speeds using tap water and vegetable oil as carriers. The operating characteristics of the laser imaging probe...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1984
ISBN-10: 0-8031-0227-5
ISBN: 978-0-8031-0227-9
... An intelligent instrumentation system is being implemented to analyze images stored during pulsed laser illumination of fuel sprays. Images are stored on magnetic video disk during the experiment and later analyzed with a system consisting of a commercial image processor and a minicomputer...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1983
ISBN-10: 0-8031-0708-0
ISBN: 978-0-8031-0708-3
... The application of electrostatic techniques has been investigated as a repulsion system to keep dust off mirrors that might be used in high power laser systems. A demonstration unit for a 30 cm mirror was built and shipped to Kirtland Air Force Base, New Mexico as part of the program...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1980
ISBN-10: 0-8031-0604-1
ISBN: 978-0-8031-0604-8
... Laser techniques based on Raman scattering, absorption, and fluorescence have been used successfully in analyzing ambient air samples, as well as in probing plumes remotely. The sensitivity limits have ranged from 1 ppm to 0.02 ppb for air samples and down to 50 ppb for probing at a distance...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1977
ISBN-10: 0-8031-0196-1
ISBN: 978-0-8031-0196-8
... Laser surface inspection of continuous web materials is capable of more objective results than most human inspectors. This fact complicates the standardization and calibration of the laser system. Calibration methods are discussed, including the human operator himself, resolution grids...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1976
ISBN-10: 0-8031-0318-2
ISBN: 978-0-8031-0318-4
... A laser interferometry crack tip opening displacement measurement technique has been developed and is described here. This interferometric displacement gage was used to measure displacements near the crack tip in flawed specimens. Measured displacements were then converted to stress intensity...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1976
ISBN-10: 0-8031-0509-6
ISBN: 978-0-8031-0509-6
... A laser interferometry technique is described which is capable of resolving crack surface displacements to about 0.2 μm. The method provides continuous measurements of the free surface crack profile in metal specimens without being limited by rigid body displacements. Using the laser...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1975
ISBN-10: 0-8031-0786-2
ISBN: 978-0-8031-0786-1
... The objective was to investigate whether laser light depolarization can serve as a unique descriptor of pavement textural charcteristics. Measurements were made on 20 pavement samples. Test results were compared with skid numbers, British Pendulum Numbers, and data obtained by three other...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1975
ISBN-10: 0-8031-5526-3
ISBN: 978-0-8031-5526-8
... A variety of water quality parameters are accessible to measurement using the technique of fluorescence spectroscopy. These include such measurements as oil, chlorophyll, lignin sulfonate, and dye tracing. The availability of reliable lasers has opened up the possibility of using...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1975
ISBN-10: 0-8031-5526-3
ISBN: 978-0-8031-5526-8
... Recent advances in laser and electro-optics technology have greatly enhanced the feasibility of active optical probing techniques aimed at the remote sensing of water parameters. This paper describes a lidar (laser radar) that has been designed and constructed for underwater probing...
eBook Chapter
Series: ASTM Select Technical Papers
Publisher: ASTM International
Published: 1973
ISBN-10: 0-8031-0114-7
ISBN: 978-0-8031-0114-2
... community structure analysis using laser holography) have been developed to increase the speed of data collection and data analysis. water pollution lasers holography aquatic biology environmental surveys monitors John Cauns, Jr K. L. Dickson,^ and Guy Lanza ^ Rapid Biological Monitoring...