By Gerald C. Holst
Copublished with JCD Publishing. Thorough clarification of warmth move, with suggestions supported through thermograms. meant for all who paintings with thermal imaging platforms: researchers, process designers, try engineers, revenues employees, and armed forces and civilian finish users.Contents - advent - warmth - Blackbody radiation - Emissivity - Atmospheric transmittance - digital camera layout - functionality parameters - digital camera choice - Observer education - creation to purposes - objective Signatures - Temperature measurements - construction envelope inspections - Roof inspections - energy distribution - Electrical/Mechanical Inspection - Buried items - Surveillance - Nondestructive trying out - procedure/ qc - Inspection approaches - Appendix A: Temperature conversion - Appendix B: Emissivity - Appendix C: Thermal Sensing and Imaging - Index
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Extra resources for Common Sense Approach to Thermal Imaging (SPIE Press Monograph Vol. PM86)
Therefore, heat must be supplied to the object by an external source. THERMAL WAVE NONDESTRUCTIVE TESTING Nondestructive testing where heat is applied in a periodic fashion. Since 1976, SPIE has hosted the internationally acclaimed conference Thermosense. This conference concentrates on the civil and industrial applications. Selected papers appeal-l in Thermal Sensing and Imaging and its Table of Contents are provided in Appendix C. Papers on other topics appear in Infrared Technology5 and Infrared Imaging Systems: Design, Analysis, Modeling, and T e ~ t i n g .
DISSIPATION OF ELECTRICAL ENERGY Since all electrical circuits, transformers, and components have resistance, they dissipate power: where I i s the current flowing through the resistance R. Using the mechanical equivalence of heat (one watt equals 2 . 3 9 ~ 1 0kcalls) -~ with Equation 2-2, provides the temperature rise after one second: Heat 43 By knowing the heat capacity, mass, resistance, and current, the temperature increase can be calculated. This approach neglects all heat losses. The actual temperature will be much lower due to conduction, convection and radiation.
Introduction 19 NONDESTRUCTIVE TESTING Material inspection by monitoring heat flux disturbances caused by defects. Generally, the object is at ambient temperature. Therefore, heat must be supplied to the object by an external source. THERMAL WAVE NONDESTRUCTIVE TESTING Nondestructive testing where heat is applied in a periodic fashion. Since 1976, SPIE has hosted the internationally acclaimed conference Thermosense. This conference concentrates on the civil and industrial applications. Selected papers appeal-l in Thermal Sensing and Imaging and its Table of Contents are provided in Appendix C.
Common Sense Approach to Thermal Imaging (SPIE Press Monograph Vol. PM86) by Gerald C. Holst