Titlebook: Lock-in Thermography; Basics and Use for E Otwin Breitenstein,Martin Langenkamp Book 20031st edition Springer-Verlag Berlin Heidelberg 2003

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Book 20031st edition impractica- ble for general use, since it worked in a mechanical contacting mode, and its measurement time was necessarily many hours. With the availability of highly sensitive focal plane array thermocameras at the end of the 1990s, the way was opened to construct highly sensitive IR-based lock-in

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Physical and Technical Basics,graphy. In Sect. 2.2, the principles of the lock-in technique itself and of its digital realization are described. In Sect. 2.3, the two principal variants of lock-in thermography, which are serially measuring systems and camera-based systems, are introduced and compared. Section 2.4 discusses the i

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Experimental Technique,dy-state, showing the large variety of thermography measurement possibilities. Many of these systems are not called thermography but rather thermo-AFM, or photothermal or thermo-elastic investigations. But, in principle, they are all designed to measure lateral surface temperature distributions, and

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