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Bücher Englische Bücher Wissen & Bildung Naturwissenschaft, Medizin, Informatik, Technik Technik Allg. & Lexika Rail Crack Monitoring Using Acoustic Emission Technique
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Rail Crack Monitoring Using Acoustic Emission Technique
Dan Li (Taschenbuch, Englisch)
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Beschreibung
This thesis provides an innovative strategy for rail crack monitoring using the acoustic emission (AE) technique. The field study presented is a significant improvement on laboratory studies in the literature in terms of complex rail profile and crack conditions as well as high operational noise. AE waves induced by crack propagation, crack closure, wheel-rail impact and operational noise were… obtained through a series of laboratory and field tests, and analyzed by wavelet transform (WT) and synchrosqueezed wavelet transform (SWT). A wavelet power-based index and the enhanced SWT scalogram were sequentially proposed to classify AE waves induced by different mechanisms according to their energy distributions in the time–frequency domain. A novel crack sizing method taking advantage of crack closure-induced AE waves was developed based on fatigue tests in the laboratory. The propagation characteristics of AE waves in the rail were investigated, and Tsallis synchrosqueezed wavelet entropy(TSWE) with time was finally brought forward to detect and locate rail cracks in the field. The proposed strategy for detection, location and sizing of rail cracks helps to ensure the safe and smooth operation of the railway system. This thesis is of interest to graduate students, researchers and practitioners in the area of structural health monitoring. 106,99 €
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Technische Daten
Erscheinungsdatum
10.01.2019
Sprache
Englisch
EAN
9789811341298
Herausgeber
Springer Singapore
Serien- oder Bandtitel
Springer Theses
Sonderedition
Nein
Autor
Dan Li
Seitenanzahl
136
Auflage
Softcover reprint of the original 1st edition 2018
Einbandart
Taschenbuch
Schlagwörter
Non-Destructive Testing (NDT), Structural Health Monitoring, Surface Cracks, Internal Cracks, Fatigue Crack Growth, Fracture Mechanics, Pencil Lead Break (PLB), Wavelet Transform Based Modal Analysis (WTMA), Tsallis Synchrosqueezed Wavelet Entropy (TSWE), Rail Defects
Thema-Inhalt
TTA - Akustik und Tontechnik
TGMT - Werkstoffprüfung
PHDS - Wellenmechanik (Vibration und Akustik)
Höhe
235 mm
Breite
15.5 cm
Hersteller: Springer, Europaplatz 3, Heidelberg, Deutschland, 69115, ProductSafety@springernature.com, Springer Nature Customer Service Center GmbH
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