Results 31 to 40 of about 253,309 (213)

Detection and Characterization of Artificial Porosity and Impact Damage in Aerospace Carbon Fiber Composites by Pulsed and Line Scan Thermography

open access: yesApplied Sciences, 2023
Nondestructive testing (NDT) of composite materials is of paramount importance to the aerospace industry. Several NDT methods have been adopted for the inspection of components during production and all through the aircraft service life, with infrared ...
Clemente Ibarra-Castanedo   +6 more
doaj   +1 more source

Dual-band active thermography on infrared transparent materials

open access: yes, 2022
S.189-200Infrared semi-transparent materials, like zirconia thermal barrier coatings on steel, CFRP, wood and human skin were investigated by flash excited pulsed and laser excited lock-in thermography.
Abuhamad, M., Netzelmann, U.
core   +2 more sources

Applications of Pulse Phase Thermography

open access: yes, 1997
Recently, a novel approach was proposed which combines advantages of both pulse (PT) and modulated (MT) thermography. In a nondestructive evaluation (NDE) perspective, the specimen is pulse-heated as in PT and the mix of frequencies of the thermal waves launched into the specimen are unscrambled by performing the Fourier transform of the temperature ...
X Maldague, S Marinetti, J P Couturier
openaire   +5 more sources

A local defect resonance for linear and nonlinear ultrasonic thermography [PDF]

open access: yes, 2014
An efficient wave-defect interaction is the key to a high thermal response of flaws in ultrasonic thermography. To selectively enhance defect vibrations a concept of local defect resonance is developed and applied to ultrasonic activation of defects ...
Solodov, I., Rahammer, M., Busse, G.
core   +1 more source

Non-Contact Degradation Evaluation for IGBT Modules Using Eddy Current Pulsed Thermography Approach

open access: yesEnergies, 2020
In this paper, a non-contact degradation evaluation method for insulated gate bipolar transistor (IGBT) modules is proposed based on eddy current pulsed thermography approach.
Xingliang Liu   +5 more
doaj   +1 more source

Feasibility of Pulsed Thermography for Moisture Estimation

open access: yesJournal of Applied Research and Technology, 2022
The dehydration of farm products provides farmers an opportunity to preserve their products longer and simultaneously earn more profit from them. Nevertheless, traditionally the quality of the dehydrated products has been determined by the use of invasive methods, for example, through manual measurements with a Vernier caliper and a micrometer, has its
Jehiely Belem Hernández-Castillo   +6 more
openaire   +1 more source

Active thermography to look beneath the surface of a historic German aircraft

open access: yesResearch and Review Journal of Nondestructive Testing, 2023
Thermography is a well-established non-destructive testing technique in materials research and defect detection. In addition, it is used on cultural heritage in the form of buildings and paintings.
Julia Frisch   +4 more
doaj   +1 more source

Numerical simulation of subsurface defect identification by pulsed thermography and improvement of this technique for noisy data

open access: yesFracture and Structural Integrity, 2019
Pulsed thermography is an active non-destructive technique which uses optical excitation source to stimulate heating of the object under investigation.
Oleg Plekhov   +2 more
doaj   +3 more sources

Active Infrared Thermography for Seal Contamination Detection in Heat-Sealed Food Packaging

open access: yesJournal of Imaging, 2016
Packaging protects food products from environmental influences, assuring quality and safety throughout shelf life if properly performed. Packaging quality depends on the quality of the packaging material and of the closure or seal.
Karlien D’huys   +2 more
doaj   +1 more source

Compression of Pulsed Infrared Thermography Data With Unsupervised Learning for Nondestructive Evaluation of Additively Manufactured Metals

open access: yesIEEE Access, 2022
Additive manufacturing (AM) of high-strength metals, which is typically based on laser powder bed fusion (LPBF), can introduce microscopic pores in the AM metal.
Xin Zhang   +3 more
doaj   +1 more source

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