WO1999010731A8 - Microwave enhanced infrared thermography - Google Patents

Microwave enhanced infrared thermography

Info

Publication number
WO1999010731A8
WO1999010731A8 PCT/US1998/017762 US9817762W WO9910731A8 WO 1999010731 A8 WO1999010731 A8 WO 1999010731A8 US 9817762 W US9817762 W US 9817762W WO 9910731 A8 WO9910731 A8 WO 9910731A8
Authority
WO
WIPO (PCT)
Prior art keywords
contrast
underground
ground
respect
infrared thermography
Prior art date
Application number
PCT/US1998/017762
Other languages
French (fr)
Other versions
WO1999010731A1 (en
Inventor
Charles A Dimarzio
Carey M Rappaport
Original Assignee
Univ Northeastern
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Northeastern filed Critical Univ Northeastern
Publication of WO1999010731A1 publication Critical patent/WO1999010731A1/en
Publication of WO1999010731A8 publication Critical patent/WO1999010731A8/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00—Investigating or analyzing materials by the use of thermal means
    • G01N25/72—Investigating presence of flaws

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electromagnetism (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Radiation Pyrometers (AREA)

Abstract

A detection apparatus (10) incorporating microwave-enhanced infrared thermography for providing the detection, location and identification of underground devices. Microwave energy at a wavelength determined by the depth of the object (60) and the soil conditions is utilized to heat the underground target and the surrounding ground (80). The contrast in dielectric properties of the object with respect to the ground produces a contrast in absorbed energy of the underground device with respect to the surrounding soil. This contrast in absorbed energy as well as the contrast in thermal conductivity and specific heat of the underground object (60) with respect to the surrounding soil result in a concomitant contrast in the temperature at the surface of the ground (70). This contrast in temperature at the surface of the ground is detected and recorded by a device (40) such as an infrared camera from which the underground device can be precisely located and identified.
PCT/US1998/017762 1997-08-29 1998-08-27 Microwave enhanced infrared thermography WO1999010731A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5725397P 1997-08-29 1997-08-29
US60/057,253 1997-08-29

Publications (2)

Publication Number Publication Date
WO1999010731A1 WO1999010731A1 (en) 1999-03-04
WO1999010731A8 true WO1999010731A8 (en) 1999-04-08

Family

ID=22009461

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/017762 WO1999010731A1 (en) 1997-08-29 1998-08-27 Microwave enhanced infrared thermography

Country Status (1)

Country Link
WO (1) WO1999010731A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19933446C1 (en) * 1999-07-16 2001-03-22 Mtu Muenchen Gmbh Method and device for detecting defects in metallic components
CA2408399A1 (en) 2000-05-09 2001-11-15 Nitromed, Inc. Infrared thermography and methods of use
DE10053112A1 (en) * 2000-10-26 2002-05-16 Bosch Gmbh Robert Non-destructive thermographic testing device for detection of delamination, cracks or material defects in the surfaces of electrically conducting test pieces using a microwave source to provide inductive heating
FR2824149B1 (en) * 2001-04-26 2006-01-27 Midival DETECTOR OF BURIED OBJECTS IN THE SOIL
US6753529B2 (en) 2001-07-03 2004-06-22 Northeastern University Multiple wavelength microwave-enhanced infrared thermography
EP1455180A1 (en) * 2003-03-04 2004-09-08 Silvia Hofmann Method and device for thermographic testing on plastic materials of ship or boat hulls
DE102006040869B4 (en) * 2006-08-31 2013-07-04 Thermosensorik Gmbh Method and device for detecting a fault in a layered non-metallic specimen

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3261014A (en) * 1961-03-27 1966-07-12 Ibm Combined radar and infrared display system
SU1213407A1 (en) * 1984-08-10 1986-02-23 Научно-Исследовательский Институт Интроскопии Method of heat nondestructive testing
DE3601983A1 (en) * 1986-01-23 1987-07-30 Siemens Ag METHOD AND DEVICE FOR CONTACTLESS DETERMINATION OF TEMPERATURE DISTRIBUTION IN AN EXAMINATION OBJECT
JPS6418051A (en) * 1987-07-14 1989-01-20 Fukuo Ota Decision of neutralization for concrete
US4866276A (en) * 1987-12-29 1989-09-12 The Boeing Company Method and apparatus for nondestructive analysis of subsurface features of material

Also Published As

Publication number Publication date
WO1999010731A1 (en) 1999-03-04

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