Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Demonstration of dual-band infrared thermal imaging at Grass Valley Creek bridges
We demonstrated dual-band infrared (DBIR) thermal imaging at the Grass Valley Creek Bridges near Redding CA. DBIR thermal imaging is an enabling technology for rapid, reliable, bridge deck inspections while minimizing lane closures. bridge-deck inspections were conducted from a mobile DBIR bridge inspection laboratory during November 2-3, 1995. We drove this self-contained unit at limited highway speeds over 0.4 lane miles of bridge deck. Using two thermal IR bands, we distinguished delaminations from clutter. Clutter, or unwanted thermal detail, occurs from foreign materials or uneven shade on the bridge deck surface. By mapping the DBIR spectral-response differences at 3-5 micrometers and 8-12 micrometers, we removed foreign material clutter. By mapping the deck diurnal thermal inertia variations, we removed clutter from uneven shade. Thermal inertia is a bulk deck property, the square root of thermal conductivity x density x heat capacity.
Demonstration of dual-band infrared thermal imaging at Grass Valley Creek bridges
We demonstrated dual-band infrared (DBIR) thermal imaging at the Grass Valley Creek Bridges near Redding CA. DBIR thermal imaging is an enabling technology for rapid, reliable, bridge deck inspections while minimizing lane closures. bridge-deck inspections were conducted from a mobile DBIR bridge inspection laboratory during November 2-3, 1995. We drove this self-contained unit at limited highway speeds over 0.4 lane miles of bridge deck. Using two thermal IR bands, we distinguished delaminations from clutter. Clutter, or unwanted thermal detail, occurs from foreign materials or uneven shade on the bridge deck surface. By mapping the DBIR spectral-response differences at 3-5 micrometers and 8-12 micrometers, we removed foreign material clutter. By mapping the deck diurnal thermal inertia variations, we removed clutter from uneven shade. Thermal inertia is a bulk deck property, the square root of thermal conductivity x density x heat capacity.
Demonstration of dual-band infrared thermal imaging at Grass Valley Creek bridges
N. Del Grande (Autor:in) / P. F. Durbin (Autor:in) / C. M. Logan (Autor:in) / D. E. Perkins (Autor:in) / P. C. Schich (Autor:in)
1996
15 pages
Report
Keine Angabe
Englisch
Demonstration of dual-band infrared thermal imaging at Grass Valley Creek bridges [2946-20]
| British Library Conference Proceedings | 1996
Online Contents | 1999
Online Contents | 1999