Results 151 to 160 of about 670 (184)
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Lock-in Thermography Investigation of Solar Modules
2011Lock-in thermography (LIT) can be used both for single solar cells and for modules consisting of a series connection of single cells. Until now LIT has been used nearly exclusively for single cells and only rarely for modules, which have been investigated only by standard (steady-state) thermography.
Breitenstein, O., Straube, H.
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Non-destructive evaluation of bonded structures with lock-in thermography
Journal of Adhesion Science and Technology, 2003Lock-in thermography is employed for non-destructive evaluation of several types of bonded structures, which are commonly encountered in industrial applications. Specimens were fabricated to simulate: adhesively bonded aluminium joints, which are commonly used in aeronautical and automotive fields; bonds between pipes of poly(vinyl chloride) (PVC ...
C. Meola +2 more
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Analysis of Defective Carbon-Epoxy by Means of Lock-in Thermography
Research in Nondestructive Evaluation, 2000The attention of the present work is focused on the analysis of defects in carbon-epoxy laminates. Different specimens are manufactured by varying the laminate orientation code, the weave type (preimpregnated or nonimpregnated), and the kind of defect. In particular, defects such as inclusions of spurious materials, delamination, and localized lack or ...
GIORLEO, GIUSEPPE +2 more
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Non-destructive evaluation of aerospace materials with lock-in thermography
Engineering Failure Analysis, 2006Abstract The attention of the present study was focused on the aid provided by lock-in thermography for non-destructive evaluation of aerospace materials and structures. The experimental analysis was performed by testing several specimens, which were made of different materials employed in the fabrication of aircraft (composites, hybrid composites ...
MEOLA, CAROSENA +3 more
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SPIE Proceedings, 2007
Inspection of aerospace components has always been a challenge. Infrared thermography has demonstrated to be a useful tool for this matter. In this paper, we offer a comparative study involving three active techniques: pulsed thermography, lock-in thermography and vibrothermography.
Clemente Ibarra-Castanedo +5 more
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Inspection of aerospace components has always been a challenge. Infrared thermography has demonstrated to be a useful tool for this matter. In this paper, we offer a comparative study involving three active techniques: pulsed thermography, lock-in thermography and vibrothermography.
Clemente Ibarra-Castanedo +5 more
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Lock-in thermography method for the NDT of composite materials
SPIE Proceedings, 2008In this paper, the non-destructive testing process of lock-in thermography to some typical defects cases, including the composite with holes or ribs on its back, or inside with multi layers, air holes or defect, is simulated on the basis of the finite element method by ANSYS software.
Yanguang Zhao +4 more
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Nondestructive Evaluation of Materials With Rear Heating Lock-In Thermography
IEEE Sensors Journal, 2007The detection of small and thin solid slag inclusions in a material is, in general, difficult and it may become a critical task when the component under inspection has complex geometry and/or small dimensions. The attention of this note is focused on the use of back-side heating lock-in thermography for nondestructive evaluation of components with thin
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