Results 31 to 40 of about 131 (106)
Blade Crack Diagnosis Based on Blade Tip Timing and Convolution Neural Networks
Applied Sciences, 2023 The diagnosis of blade crack faults is critical to ensuring the safety of turbomachinery. Blade tip timing (BTT) is a non-contact vibration displacement measurement technique, which has been extensively studied for blade vibration condition monitoring ...
Guangya Zhu +5 more
doaj +1 more source
IEEE Access, 2023 Blade tip-timing (BTT) signals are always seriously under sampled, so reconstruction is much needed for vibration analysis. Blade vibration responses are sparse in order domain and classical compressed sensing (CS) algorithms are difficult to reconstruct
Zhongsheng Chen +4 more
doaj +1 more source
Journal of KONBiN, 2018 Abstract An expert system aided method of the blade-tip signal decomposition to the turbine blade vibration sources identification is presented. The method utilises a multi-valued diagnostic model based on the discrete wavelet transform.
Henryk Borowczyk +2 more
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BTT & RFLB - THE OPTIMUM SET FOR STEAM TURBINE BLADES MONITORING
Acta Polytechnica CTU Proceedings, 2018 BTT, Blade Tip Timing system, is a commercially available system generating files of precise times of blade tips when passing sensors attached in a machine stator.
Miroslav Balda
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CALIBRATION OF BTT MEASUREMENT WITH RESPECT TO SENSOR POSITION OVER SHROUDED LSB
Acta Polytechnica CTU Proceedings, 2018 In order to increase efficiency and reliability of steam turbines, last stage blades are equipped with mid-span tie-boss and shroud. We can use Blade Tip-Timing method (BTT) to measure vibration of shrouded blades, but the measured level of vibration is ...
Tereza Dadáková, Zdeněk Kubín
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Advanced Materials Interfaces, Volume 5, Issue 1, January 9, 2018., 2018 Spiro‐MeOTAD is the most commonly used hole transport material for perovskite solar cells. In this article, various aspects of spiro‐MeOTAD including its properties, additives, stability, alternatives, its applications in perovskite solar cells as well as other applications are reviewed.
Zafer Hawash, Luis K. Ono, Yabing Qi
wiley +1 more source
International Journal of Aerospace Engineering, Volume 2018, Issue 1, 2018., 2018 The performance of airplane engines is influenced by the performance of their bladed disks. The loads those engines are under, both internal and external, are the origin of vibrations than can jeopardize their integrity. Traditionally, monitoring of those vibrations has been circumscribed to prototyping and quality tests of manufactured disks. However,
José Miguel Gil-García +3 more
wiley +1 more source
Integrin‐Mediated Cell‐Matrix Interaction in Physiological and Pathological Blood Vessel Formation
Journal of Oncology, Volume 2012, Issue 1, 2012., 2012 Physiological as well as pathological blood vessel formation are fundamentally dependent on cell‐matrix interaction. Integrins, a family of major cell adhesion receptors, play a pivotal role in development, maintenance, and remodeling of the vasculature.
Stephan Niland +2 more
wiley +1 more source
International Journal of Rotating Machinery, Volume 2007, Issue 1, 2007., 2007 Blade tip timing is a technique for the measurement of vibrations in rotating bladed assemblies. Although the fundamentals of the technique are simple, the analysis of data obtained in the presence of simultaneously occurring synchronous resonances is problematic.
J. Gallego-Garrido +3 more
wiley +1 more source
International Journal of Rotating Machinery, Volume 2007, Issue 1, 2007., 2007 Blade tip timing is a technique for the measurement of vibrations in rotating bladed assemblies. In Part I of this work a class of methods for the analysis of blade tip timing data from bladed assemblies undergoing two simultaneous synchronous resonances was developed.
J. Gallego-Garrido +4 more
wiley +1 more source