Dual-band infrared imaging applications: Locating buried minefields, mapping sea ice, and inspecting aging aircraft

Conference · Tue Sep 01 04:00:00 EDT 1992

OSTI ID:10184656

Del Grande, N K; Durbin, P F; Perkins, D E

We discuss the use of dual-band infrared (DBIR) imaging for three quantitative NDE applications: location buried surrogate mines, mapping sea ice thicknesses and inspecting subsurface flaws in aging aircraft parts. Our system of DBIR imaging offers a unique combination of thermal resolution, detectability, and interpretability. Pioneered at Lawrence Livermore Laboratory, it resolves 0.2 {degrees}C differences in surface temperatures needed to identify buried mine sites and distinguish them from surface features. It produces both surface temperature and emissivity-ratio images of sea ice, needed to accurately map ice thicknesses (e.g., by first removing clutter due to snow and surface roughness effects). The DBIR imaging technique depicts subsurface flaws in composite patches and lap joints of aircraft, thus providing a needed tool for aging aircraft inspections.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: Department of Defense, Washington, DC (United States); Merentutkimuslaitos, Helsinki (Finland)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10184656
• Report Number(s): UCRL-JC--111214; CONF-9207155--1; ON: DE93000516
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500
440500
47 OTHER INSTRUMENTATION
AERIAL SURVEYING
AIRCRAFT
BOMBS
ICE CAPS
INFRARED RADIATION
INFRARED THERMOGRAPHY
MAPPING
MATERIALS TESTING
NONDESTRUCTIVE ANALYSIS
REMOTE SENSING
TEMPERATURE MEASUREMENT
THERMAL INSTRUMENTATION
UNDERGROUND