Search results for: PIEZOCERAMIC CIRCULAR DISC TRANSDUCER

• Chladni and circular saw disc vibrations visualisation

  Publication

  • L. Javorek
  • K. Orłowski

  - Year 2011

  In this paper are described some methods for saw disc vibration monitoring in march of time (chronology). Ernst Chaldni, the father of sound visualisation and his patternsis are mentioned. In the last partof article are introduced results received with authors measuring systems.

• RADIATION OF HIGH INTENSITY SOUND BY CIRCULAR DISC BY MEANS OF THE NUMERICAL METHOD

  Publication

  • G. Grelowska
  • E. Kozaczka

  - HYDROACOUSTICS - Year 2014

  The main goal of this paper is to find sound pressure distribution radiated by the circular piezoelectric disc that vibrates with the finite amplitude. There has been presented the pressure distribution close to the radiating surface. Also it is shown the sound pressure distribution in the 3D form. The mathematic modeling was carried out on the base of the nonlinear acoustic equation with the proper boundary condition. The axial...

  Full text available to download

• A spice equivalent circuit for modeling the performance of dual frequency echo-sounder

  Publication

  • M. Moszyński
  • W. Lis

  - HYDROACOUSTICS - Year 2011

  The paper presents novel network equivalent circuit of piezoceramic circular disc transducers that takes into account thickness and radial mode of vibrations. The starting point of the analysis is 4-port description of circular disc element representing the solution of wave equation set in radial and thickness directions. The approximate solution for harmonic case is represented in the form of 4x4 matrix, which is synthesised and...

  Full text available to download

• disP

  Journals

  ISSN: 0251-3625 , eISSN: 2166-8604

• A LUMPED-CIRCUIT MODEL OF CIRCULAR PISTON TRANSDUCER FOR MODELING ITS PERFORMANCE IN DUAL FREQUENCY OPERATING MODES

  Publication

  • M. Moszyński

  - Year 2014

  The paper presents novel network equivalent circuit of piezoceramic circular disc transducer that takes into account thickness and ra dial mode of vibrations. The starting point of the analysis is 4-port description of circular disc element representing the solution of wave equation set in radial and thickness directions. Th e approximate solution for harmonic case is represented in the form of 4x4 matrix, which is syn thesized...

  Full text to download in external service

• Circular Farmaceutica

  Journals

  ISSN: 0009-7314

• Corrosion damage identification based on the symmetry of propagating wavefield measured by a circular array of piezoelectric transducers: Theoretical, experimental and numerical studies

  Publication

  • B. Zima
  • J. Moll

  - MECHANICAL SYSTEMS AND SIGNAL PROCESSING - Year 2024

  The article investigates the results obtained from numerical simulations and experimental tests concerning the propagation of guided waves in corroded steel plates. Developing innovative methodologies for assessing corrosion-induced degradation is crucial for accurately diagnosing offshore and ship structures exposed to harsh environmental conditions. The main aim of the research is to analyze how surface irregularities affect...

  Full text available to download

• Noise spectral density computation based on finite element model of piezoceramic sensor

  Publication

  • P. Sedlak
  • J. Majzner
  • L. Grmela
  • L. Hasse

  - Year 2006

  The high sensitivity with wide bandwidth is required for sensor applications in non-destructive testing (NDT). The sensitivity of piezoceramic sensors demands to minimize their noise especially thermal noise, polarisation noise and low frequency 1/f noise,which are the main sources of voltage or current fluctuation in this sort of sensors. For simplicity, only the piezoceramic part of sensor was under study. the theoretical and...

• An experimental study on transducer for the dds technology demonstrator

  Publication

  • A. Elminowicz
  • W. Lis
  • W. Męciński

  - HYDROACOUSTICS - Year 2009

  Przedmiotem artykułu jest cylindryczny wieloelementowy przetwornik ultradźwiękowy wykonany w technologii DDS - demonstratora. Opisane zostały własności szerokopasmowego promieniowania przetwornika którego elementy zostały wykonane z piezokompozytowego materiału. W artykule zamieszczono wyniki badań wycinka próbnego - wykonanego z trzech elementów piezokompozytowych.

  Full text available to download

• Measuring the impedance of ultrasonic transducers.

  Publication

  • W. Lis
  • J. Schmidt

  - Year 2004

  W przypadku przetworników ultradźwiękowych charakteryzujących się zazwyczaj bardzo zmienną w funkcji częstotliwości impedancją jej pomiar stwarza szereg trudności. Nie nadają się do tego celu tanie, łatwo dostępne, przyrządy. Znane są drogie systemy badawcze stosowane do tego celu. Zazwyczaj przystosowane są one do takich pomiarów w szerokim paśmie częstotliwości, od pasma akustycznego aż do zakresu mikrofalowego. Natomiast,...