Results 181 to 190 of about 58,340 (242)

Pulse phase infrared thermography

NDT & E International, 1996
An approach is proposed which combines simultaneously advantages both of pulse (PT) and modulated infrared thermography. In a nondestructive evaluation perspective, the specimen is pulse heated as in PT and the mix of frequencies of the thermal waves launched into the specimen is unscrambled by performing the Fourier transform of the temperature ...
X Maldague, S Marinetti
openaire   +3 more sources

Simulation-assisted AI for the evaluation of thermal barrier coatings using pulsed infrared thermography

Journal of Applied Physics, 2022
The development of predictive models for the accurate estimation of thermo-physical properties of the Thermal Barrier Coated (TBC) aero-engine components is critical in assessing component life and maintenance.
Sruthi Krishna K P, Nithin Puthiyaveettil, Srinivasa Chakravarthy V, K. Balasubramaniam   +3 more
semanticscholar   +1 more source

Numerical and Experimental investigations of pulsed infrared Thermography for damage detection in Honeycomb Sandwich Composites

Proceedings of the 2022 International Conference on Quantitative InfraRed Thermography, 2022
This paper investigates the inspection and testing of internal structural damages in Honeycomb Sandwich composites by means of pulsed thermography experiments.
S. Unnikrishnakurup, J. Zheng, C. Manzano, Cyril Ngo   +3 more
semanticscholar   +1 more source

Double pulse infrared thermography

NDT & E International, 2004
Abstract In this paper we propose a simple enhancing protocol for pulsed infrared thermography. The method is based on stimulating the specimen with two heating pulses separated by a short time interval delta. This approach was tested on several specimens of low and high thermal diffusivity and showed to provide higher thermal contrasts when an ...
X Maldague, A Ziadi, M Klein
openaire   +1 more source

Delamination defects detection for wind turbine blades based on pulsed infrared thermography

Nondestructive Testing and Evaluation
Chiwu Bu, Xin Huang, Peng Chen, Weiliang Bai, Qingju Tang   +4 more
openaire   +2 more sources

Heat-stimulus correction for pulsed-infrared thermography

SPIE Proceedings, 2009
The modified DAC version with thermal quadrupoles can be considered an interesting alternative to thermal contrast computations since it provides an automated tool for depth retrieval and eliminates the need of selecting a non-defective area. In practice it is important to have heat stimulus with complex shapes and long durations (several seconds ...
Hernán D. Benítez, Clemente Ibarra-Castanedo, AbdelHakim Bendada, Xavier Maldague   +3 more
openaire   +1 more source

Pulsed Infrared Thermography Failure Analysis of Low-emissivity Specimens Without Contaminations Caused by High-emissivity Coatings

International Workshop on Thermal Investigations of ICs and Systems, 2020
Pulsed Infrared Thermography (PIRT) is a very fast and non-destructive technique for testing various types of specimens. This makes PIRT interesting for inspections in industrial production lines.
D. Wargulski, D. May, J. Petrick, R. Schacht, B. Wunderle, M. Abo Ras   +5 more
semanticscholar   +1 more source

Modified Infrared Images Contrast for Pulsed Thermography

2011 Third International Conference on Measuring Technology and Mechatronics Automation, 2011
Infrared Thermography is an emerging technology for nondestructive testing. However, it is subject to blurring and degradation of the acquired signal, as the diffusive nature in the process. This make difficulties for qualitative and quantitative analysis, especially when deeper defects located within the substrate, as well as high thermal conductivity
null Ma Shuohan, null Ma Qishuang
openaire   +1 more source

Pulse shaping in infrared thermography for nondestructive evaluation

Review of Scientific Instruments, 2003
Infrared thermography is a common technique for nondestructive evaluation. In active infrared thermography privileged here, a thermal stimulation is required to generate relevant thermal contrasts on specimens. Among stimulation techniques, pulse heating is one of the most common along with lock-in thermography.
A. Ziadi, F. Galmiche, X. Maldague
openaire   +1 more source

Study on detecting CFRP composites using pulsed infrared thermography

SPIE Proceedings, 2011
Composite sandwich structure has been widely used in aerospace due to its lightweight, high stiffness and strength. The quality of the structure is crucial to durability and structural integrity of the rehabilitated the structure, Delaminations, debonding and water ingressing to honeycomb are typical defects in the structure.
Yan Huo, Hui-Juan Li, Yue-Jin Zhao, Cun-Lin Zhang   +3 more
openaire   +1 more source