Crack imaging by scanning laser-line thermography and laser-spot thermography
نویسندگان
چکیده
منابع مشابه
Image Processing for Laser Spot Thermography
In this paper an algorithm for the analysis of raw thermal infrared images obtained by using the nondestructive evaluation method of the laser spot thermography is proposed. A 2 laser was used to scan a test specimen through the generation of single pulses. The temperature distribution produced by this thermoelastic source was measured by an infrared camera and processed with a two-stage algori...
متن کاملMulti-spot Laser Scanning Thermography for Delamination Inspection GFRP Structure in CFRP/GFRP Structure
In this study, a multi-spot laser scanning thermography (MLST) system is developed for automated, rapid and long-range inspection of delamination in composite structures. First, thermal waves are generated by scanning a multi-spot laser beam over a target composite structure, and the corresponding thermal waves are measured by using an infrared (IR) camera. Then a thermal image processing algor...
متن کاملBlood Perfusion in a Full-Thickness Eyelid Flap, Investigated by Laser Doppler Velocimetry, Laser Speckle Contrast Imaging, and Thermography
Purpose: The eyelid is commonly dissected and divided in the process of, for example, blepharotomy, entropion repair, or when preparing a full-thickness eyelid flap to reconstruct a tumor defect. No study has yet been conducted to examine how perfusion in an eyelid is affected by dissection, using modern imaging techniques. Methods: The eyelid was divided with a 10-mm vertical incision, 5 mm fr...
متن کاملFlying Laser Spot Thermography for the Fast Detection of Surface Breaking Cracks
We report on recent developments in the detection of surface breaking cracks using flying laser spot thermography. Application of an infrared camera for mapping the thermal radiation after excitation with a diode laser equipped with an optical scanner allows us to examine a surface containing cracks in an entirely non-destructive, contactless and fast way, without even moving the camera. We dev...
متن کاملCombined Use of Terrestrial Laser Scanning and IR Thermography Applied to a Historical Building
The conservation of architectural heritage usually requires a multidisciplinary approach involving a variety of specialist expertise and techniques. Nevertheless, destructive techniques should be avoided, wherever possible, in order to preserve the integrity of the historical buildings, therefore the development of non-destructive and non-contact techniques is extremely important. In this frame...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Measurement Science and Technology
سال: 2011
ISSN: 0957-0233,1361-6501
DOI: 10.1088/0957-0233/22/3/035701