SURFACE ROUGHNESS MEASUREMENT USING WHITE LIGHT SPECKLE

AN EXPERIMENTAL INVESTIGATION IS MADE OF A TECHNIQUE FOR MEASUREMENT OF SURFACE ROUGHNESS. A SPECKLE PATTERN IS FORMED NEAR THE IMAGE PLANE OF A LENS IN SPATIALLY COHERENT LIGHT HAVING A BROAD SPECTRAL BANDWIDTH. THE CONTRAST OF THE SPECKLE IS FOUND TO BE RELATED TO SURFACE ROUGHNESS WHEN THE ROUGHNESS AND THE COHERENCE LENGTH OF ILLUMINATION ARE COMPARABLE IN MAGNITUDE. IMPLEMENTATION TECHNIQUES ARE DISCUSSED AND RESULTS SHOWN THAT INDICATE GOOD CORRELATION WITH PROFILOMETER MEASUREMENTS FOR A WIDE RANGE OF ROUGHNESS VALUES PRODUCED WITH A VARIETY OF FINISHING PROCEDURES. /AUTHOR/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/1559128X
• Supplemental Notes:
  • 1 APP
• Authors:
  • Sprague, R A
• Publication Date: 1972-12

Media Info

• Features: Figures; Photos; References;
• Pagination: p. 2811-6
• Serial:
  • Applied Optics
  • Volume: 11
  • Issue Number: 12
  • Publisher: Optical Society of America, Incorporated
  • ISSN: 1559-128X
  • EISSN: 2155-3165
  • Serial URL: http://www.opticsinfobase.org/ao/home.cfm

Subject/Index Terms

• TRT Terms: Measuring instruments; Pavements; Profilometers; Roughness; Surface course (Pavements); Texture
• Old TRIS Terms: Surface dynamics profilometer
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00207503
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 2 1973 12:00AM