Nondestructive testing thermography

These techniques include (1) vibration monitoring (2) thermography, (3) tribology, (4) process parameters, (5) visual inspection and (5) other nondestructive testing techniques. This chapter will provide a description of each of the techniques that should be included in a full capabilities predictive maintenance program for typical plants. 

Liquid crystals (LCs) are widely used In Informationprocessing devices, for optical visualization of physical Influences (heat, IR, high-frequency radiation, pressure, etc.), for nondestructive testing, and for thermography. 

Nondestructive Testing of Adhesive Joints. Many commercially available adhesives are based on polymers. NDT of adhesive joints (180) poses challenges because of (2) the small size of possibly deleterious defects (eg, porosity), (2) the thinness of the adhesive layers, and (3) sometimes, the size, shape, and material of the adherends. Acousto-ultrasonics (181) and various types of ultrasonics (182,183) are applicable to adhesive joints. Ultrasonics can be combined with noncontact optical methods (184) and pulsed thermography (185). However, the assessment of the quality or of the quantitative strength of the adhesive bond based on the NDT data often proves difficult. 

The application of liquid crystals to thermography is widespread, and covers areas as diverse as infant bath and feed temperature indicators, medical screening and diagnostics, nondestructive testing, thermometers for fish tanks and refrigerators, battery testing, jewellery, advertising, aerodynamics research and art. Some specific applica-... 

Chapter 9 Materials Evaluation—Infrared Nondestructive Testing Chapter 10 Process Monitoring and Control Chapter 11 Night Vision, Security, and Surveillance Chapter 12 Life Sciences Thermography... 

Pulsed thermography - A term used to descrihe an active technique for infrared nondestructive material testing, in which the sample is stimulated with pulses of thermal energy, and where the time-hased returned thermal images are processed to determine flaw depth and severity also called pulse-stimulated imaging and thermal wave imaging. ... 

Chatterjee K, Tuli S, Pickering SO, Almond DP (2011) A comparison of the pulsed, lock-in and frequency modulated thermography nondestructive evaluation techniques. NDT E Int 44(7) 655-667 Clark MR, McCann DM, Forde MC (2003) Application of infrared thermography to the non-destructive testing of concrete and masonry bridges. NDT E International 36(4) 265-275... 

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