AN ANALYSIS OF NONDESTRUCTIVE SENSING OF WATER CONTENT BY MICROWAVES

MICROWAVE INSTRUMENTATION IS USED FOR NONDESTRUCTIVE MEASUREMENT OF THE WATER CONTENT OF MATERIALS. THE BASIS OF ALL MICROWAVE MOISTURE SENSORS IS THAT THE DIELECTRIC CONSTANTS OF MATERIAL THAT CONTAINS WATER ARE A STRONG FUNCTION OF WATER CONTENT. THE MICROWAVE MOISTURE SENSORS BASED ON A REFLECTION OR TRANSMISSION PRINCIPLE ARE SHOWN TO HAVE THE DISADVANTAGE OF REQUIRING THAT A CALIBRATION BE MADE FOR EACH SAMPLE THICKNESS. SEVERAL ALTERNATIVE ROUTES FOR DEVELOPING RELIABLE MICROWAVE MOISTURE SENSORS ARE DISCUSSED. /AUTHOR/

• Supplemental Notes:
  • No 295, 17 PP, 10 FIG, 1 APP
• Authors:
  • Hoekstra, P
  • Cappillino, P
• Publication Date: 1971-7

Media Info

• Serial:
  • Crrel Research Reports, Army Dept /US/

Subject/Index Terms

• TRT Terms: Detection and identification; Detectors; Dielectric properties; Microwaves; Moisture content; Nondestructive tests
• Subject Areas: Highways; Maintenance and Preservation;

Filing Info

• Accession Number: 00218851
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 18 1971 12:00AM