RADAR IMAGE ANALYSIS FOR SUBSURFACE VOID DETECTION BY THE MICROWAVE POLARIZATION METHOD

Existence of voids under the pavements or tunnel linings results in the deterioration of pavements or tunnels. To effectively detect those voids by non-destructive tests, one method using radar is proposed. This research is devoted to quantitatively evaluate the efficiency of the non-destructive test by radar for detecting voids under pavements and behind tunnel linings. At the fundamental stage of this research, to acquire the directional information and to estimate the volume of three-dimensional voids by using three-dipole antenna, the investigation on microwave polarization methods is carried out by changing voids orientation and void geometry. As the result indicated, it was clarified that the response of microwave polarization mode varies with the change of void geometry and thus there is a possibility to identify the geometry and orientation of specific voids by the microwave polarization method. Besides, with the addition of supplement method for acquiring thickness of voids, the availability to estimate the volume of three-dimensional voids was investigated. For the covering abstract see ITRD E111699.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0947644320
• Corporate Authors:

  ENGINEERING TECHNICS PRESS

  46 CLUNY GARDENS
  EDINBURGH,   United Kingdom  EH10 6BN
• Authors:
  • PARK, S K
  • Uomoto, T
• Conference:
  • PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE ON STRUCTURAL FAULTS AND REPAIR, 8 JULY 1997. VOLUME 3: EXTENDING THE LIFE OF BUILDINGS AND CIVIL STRUCTURES
• Publication Date: 1997

Language

• English

Media Info

• Features: References;
• Pagination: p. 483-91
• Serial:
  • Volume: 3

Subject/Index Terms

• TRT Terms: Conferences; Detection and identification; Detectors; Image analysis; Image processing; Nondestructive tests; Pavements; Polarization; Radar; Tunnel lining; Void ratios; Waves
• Uncontrolled Terms: Micro; Voids
• ITRD Terms: 8525: Conference; 9115: Detection; 8633: Image processing; 9045: Micro; 6216: Non destructive testing; 2955: Pavement; 6796: Polarization; 5938: Porosity; 6738: Radar; 3385: Tunnel lining; 6767: Wave
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00922468
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 0-947644-32-0
• Files: ITRD
• Created Date: Apr 2 2002 12:00AM