Results 21 to 30 of about 253,309 (213)

Research on geometric parameter quantification of rail rolling contact fatigue crack damage based on 2D optical image [PDF]

Scientific Reports
High-speed railway is a comprehensive carrier of high-technology. As an important infrastructure of high - speed rail tracks, rail breakage and derailment accidents caused by rail rolling contact fatigue crack damage are quite common.
Yu Wang, Bingrong Miao, Ying Zhang, Zhong Huang   +3 more
doaj   +2 more sources

Effective compression algorithms for pulsed thermography data

, 2022
S.201-218Two compression algorithms for the image sequences generated by pulsed-transient thermography for non-destructive testing were developed. The first algorithm allows to balance the quality of the original measurement data reproduction against a ...
Netzelmann, U., Lugin, S.
core   +2 more sources

Eddy current pulsed thermography for ballistic impact evaluation in basalt-carbon hybrid composite panels

, 2022
S.D74-D81In this paper, eddy current pulsed thermography was used to evaluate ballistic impact damages in basalt-carbon hybrid fiber-reinforced polymer composite laminates for the first time, to our knowledge.
Sfarra, Stefano, Sarasini, Fabrizio, Netzelmann, Udo, Maldague, Xavier P.V., Osman, Ahmad, Perilli, Stefano, Ibarra-Castanedo, Clemente, Zhang, Hai   +7 more
core   +2 more sources

Modelling and evaluation of pulsed and pulse phase thermography through application of composite and metallic case studies [PDF]

, 2014
A transient thermal finite element model has been created of the pulsed thermography (PT) and pulse phase thermography (PPT) experimental procedure.
Waugh, R., Quinn, S., Barton, J.M.
core   +1 more source

Improvement of the contrast-to-noise ratio in pulse-phase thermography by frequency dependent windowing

, 2022
Paper QIRT-2020-016, 10 S.Two modified algorithms for pulsed phase thermography were defined. The principle is to mask out parts of the thermal signal that only add noise but no significant information.
Netzelmann, Udo, Müller, David
core   +1 more source

Dynamic Line-Scan Thermography for the Inspection of Paper-Based Materials: A Case Study Focused on an Ancient Book Cover

Proceedings, 2019
This work is focused on the use of line-scan thermography (LST) method for the inspection of an ancient book cover. Three widely used image post-processing techniques (i.e., pulsed phase thermography, partial least square thermography and principal ...
Hai Zhang, Stefano Sfarra, Clemente Ibarra-Castanedo, Xavier P. V. Maldague   +3 more
doaj   +1 more source

Defect Shape Detection and Defect Reconstruction in Active Thermography by means of Two-Dimensional Convolutional Neural Network as well as Spatiotemporal Convolutional LSTM Network

, 2022
126144A neural network (NN) for semantic segmentation (U-Net) was used for the detection of crack-type defects from thermography sequences. For this task, data sequences of forged steel parts were acquired through induction thermography and the ...
Netzelmann, Udo, Valeske, Bernd, Müller, David   +2 more
core   +1 more source

A Novel Infrared Thermography Sensing Approach for Rapid, Quantitative Assessment of Damage in Aircraft Composites

Sensors, 2020
The current necessity of the scientific and industrial community, for reduction of aircraft maintenance cost and duration, prioritizes the need for development of innovative nondestructive techniques enabling fast and reliable defect detection on ...
Spyridoula Farmaki, Dimitrios A. Exarchos, Ilias K. Tragazikis, Theodore E. Matikas, Konstantinos G. Dassios   +4 more
doaj   +1 more source

Clinical Effect Analysis of Spinal Cord Electrical Stimulator Implantation for Diabetic Foot

Neuromodulation: Technology at the Neural Interface, EarlyView., 2021
Abstract Objective To investigate the clinical effect of spinal cord electrical stimulator implantation in the treatment of diabetic foot (DF). Materials and Methods We recruited 19 patients with DF who were admitted to Shengjing Hospital of China Medical University between January 2018 and May 2020.
Peng‐Bo Zhou, Min Bao
wiley   +1 more source

Spatial Structure Analysis for Subsurface Defect Detection in Materials Using Active Infrared Thermography and Adaptive Fixed-Rank Kriging

Engineering Proceedings, 2023
The study focuses on reducing noise and nonstationary backgrounds in data collected through active infrared thermography (AIRT) for defect detection in materials.
Chun-Han Chang, Stefano Sfarra, Nan-Jung Hsu, Yuan Yao   +3 more
doaj   +1 more source