Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Principles of Emar for Spectral Response
Abstract An easy way to understand the EMAR principle is to consider the through-thickness resonances of bulk waves (thickness oscillations). Consider that a transducer is placed on the surface of a plate of thickness d and excites an ultrasonic plane wave of single cycle propagating in the thickness direction, whose wavelength and period are λ and T, respectively. The pulse wave undergoes the repeated reflections at both free surfaces and is received by the same transducer each time it reaches the incident surface. In the case of λ<<d, the received signals will be observed as shown in Fig. 4.1(a). The horizontal axis in Fig. 4.1 is the time measured from the excitation, and the vertical axis is the wave amplitude. T 0 denotes the round-trip time through the thickness. The amplitude decays as the propagation path increases, depending on attenuation of the material.
Principles of Emar for Spectral Response
Abstract An easy way to understand the EMAR principle is to consider the through-thickness resonances of bulk waves (thickness oscillations). Consider that a transducer is placed on the surface of a plate of thickness d and excites an ultrasonic plane wave of single cycle propagating in the thickness direction, whose wavelength and period are λ and T, respectively. The pulse wave undergoes the repeated reflections at both free surfaces and is received by the same transducer each time it reaches the incident surface. In the case of λ<<d, the received signals will be observed as shown in Fig. 4.1(a). The horizontal axis in Fig. 4.1 is the time measured from the excitation, and the vertical axis is the wave amplitude. T 0 denotes the round-trip time through the thickness. The amplitude decays as the propagation path increases, depending on attenuation of the material.
Principles of Emar for Spectral Response
Hirao, Masahiko (Autor:in) / Ogi, Hirotsugu (Autor:in)
EMATs for Science and Industry ; 83-92
01.01.2003
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Bibliografía de los estudios de Emar
| DataCite | 2011
Bibliografía de los estudios de Emar (2)
| DataCite | 2011
Bibliografía de los estudios de Emar (4)
| DataCite | 2013
Die Rolle der Stadt im spätbronzezeitlichen Emar
| DataCite | 2024
Emar. Eine syrische Stadt unter hethitischer Herrschaft
| DataCite | 2011