Results 191 to 200 of about 1,414,688 (255)
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IEEE International Conference on Electro/Information Technology, 2021
We introduce a Spatial Temporal Denoised Thermal Source Separation (STDTSS) unsupervised machine learning (ML) algorithm for detection of material flaws in additively manufactured (AM) metals using pulsed thermography (PT) images obtained with compact ...
Xin Zhang, J. Saniie, A. Heifetz
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We introduce a Spatial Temporal Denoised Thermal Source Separation (STDTSS) unsupervised machine learning (ML) algorithm for detection of material flaws in additively manufactured (AM) metals using pulsed thermography (PT) images obtained with compact ...
Xin Zhang, J. Saniie, A. Heifetz
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Advances in pulsed phase thermography
Infrared Physics & Technology, 2002In this paper, fundamental theory of the pulsed phase thermography (PPT) processing method is presented including notes on thermal waves, pulsed thermography and lockin thermography. Moreover, advances in signal inversion for PPT using wavelets are included along with discussions about pulse shaping and polynomial fitting for signal improvement ...
X Maldague, F Galmiche, A Ziadi
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Moran’s Index-Based Tensor Decomposition for Eddy Current Pulsed Thermography Sequence Processing
IEEE Transactions on Instrumentation and Measurement, 2021Eddy current pulsed thermography (ECPT) is widely used in the nondestructive testing (NDT) of metal surface defects. Because defect information is sometimes affected by the edge effect, it is necessary to segment the ECPT image sequence, that is ...
L. Bai +5 more
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Review of pulse phase thermography
SPIE Proceedings, 2015Pulsed phase thermography (PPT) was proposed in 1996 to enhance results from pulsed thermography experiments. PPT can be thought as the link between pulsed thermography (PT) and lock-in thermography (LT), since it provides phase delay (and amplitude) data (as in LT) from a PT configuration.
C. Ibarra-Castanedo, X. P. Maldague
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Defect Characterization Using Pulsed Thermography
Journal of Nondestructive Evaluation, 2012Infrared Thermography is one of the advanced NDE methods that is becoming attractive due to its ability to inspect non invasively large areas in short times and provide full field images in a non contact nature. While initially the method started as a qualitative technique for defect detection alone, with the advent of lock in and pulsed techniques ...
D. Sharath, M. Menaka, B. Venkatraman
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IEEE Transactions on Instrumentation and Measurement
Carbon fiber-reinforced polymer (CFRP) is widely used in various industrial applications. However, subsurface defects can compromise the performance and integrity of CFRP products.
Wei Hng Lim +3 more
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Carbon fiber-reinforced polymer (CFRP) is widely used in various industrial applications. However, subsurface defects can compromise the performance and integrity of CFRP products.
Wei Hng Lim +3 more
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AIP Conference Proceedings, 2002
A simple thermographic model has been developed that accurately describes the surface temperature response of a panel with flat bottom holes of different depths and diameters to a short heat pulse. This model assumes that a thin layer of material absorbs a radiant pulse of duration τ and that it subsequently cools off due to normal and lateral ...
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A simple thermographic model has been developed that accurately describes the surface temperature response of a panel with flat bottom holes of different depths and diameters to a short heat pulse. This model assumes that a thin layer of material absorbs a radiant pulse of duration τ and that it subsequently cools off due to normal and lateral ...
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Quantification of closed cracks in railway using eddy current pulsed thermography.
Applied Optics, 2021Rolling contact fatigue cracks are common defects in rail, and they are also the source of various rail defects. When such defects occur, crack closure is caused due to interaction forces between wheels and rails during train running. In this study, eddy
Hui Yin +5 more
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Pulsed Eddy Current Thermography and Applications
2011In this paper we report on the application of the pulsed eddy current thermography inspection technique to the detection and quantification of defects in a variety of materials. After introducing the appropriate modelling and simulation techniques an overview of a typical PEC thermography system setup is provided.
Tian, GY +5 more
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Potential of Eddy Current Pulsed Thermography as a Nondestructive Testing Method
IEEE Instrumentation & Measurement Magazine, 2022The parts of working machinery have always suffered from various working conditions in the process of use (e.g., high temperature, high humidity, and high pressure) that may generate flaws, pitting, thermal fatigue crack and other types of defects on the
Yiping Liang +4 more
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