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2 410 (0,178s) •

Project

Systems for acoustic emission characterization of mechanical properties and stability of thin film structures and functional surfaces (TA03010743)

on the generation of acoustic emission (AE ) during scratch - tests , laser excitation of surface acoustic waves and also by different types of current advanced technology and evaluation techniques for acoustic em...

BI - Akustika a kmity

  • 2013 - 2016
    • •
  • 21 520 tis. Kč
    • •
  • 13 980 tis. Kč
    • •
  • TA ČR
Project

Nonlinear Acoustics and Transport Processes in Porous Periodic Structures (GA21-16406S)

related to acoustic wave propagation in periodic porous structures. Besides mechanical of acoustic streaming influenced by temperature gradients and deforming solid scaffolds fluxes in response to acoustic

Applied mechanics

  • 2021 - 2023
    • •
  • 6 339 tis. Kč
    • •
  • 5 952 tis. Kč
    • •
  • GA ČR
Project

Non-linear ultrasonic defectoscopy of solids (GA205/03/0071)

by propagation of ultrasonic waves in solids. Present ultrasonic non-destructive testing methods of material are based on analysis of elastic waves reflection, absorption is effective tool to study total number of cracks a...

BI - Akustika a kmity

  • 2003 - 2005
    • •
  • 2 596 tis. Kč
    • •
  • 2 026 tis. Kč
    • •
  • GA ČR
Project

Acoustic wave propagation through nonlocal dispersion zones (GA15-23079S)

The proposed project deals with the problems associated with an acoustic wave of acoustic waves on nonlocal dispersion zones is connected with the. The objectives of nonlinear acoustic waves and f...

BI - Akustika a kmity

  • 2015 - 2017
    • •
  • 2 792 tis. Kč
    • •
  • 2 792 tis. Kč
    • •
  • GA ČR
Project

Two-phase flow measurement (GA102/99/1644)

of two-phase media, where the solid particles are carried by a carrying gas (air). The method exploits the fact, that the solid particles being carried by the flowing air impact aproperly formed obstacle and an acoustic

JB - Senzory, čidla, měření a regulace

  • 1999 - 2001
    • •
  • 2 860 tis. Kč
    • •
  • 2 860 tis. Kč
    • •
  • GA ČR
Project

New methods of generation and utilization of finite-amplitude standing acoustic waves (GAP101/12/1925)

standing acoustic waves. The standing waves will be driven in axisymmetric gas-filled shape in order to attain maximum acoustic pressure without formation of shock wave of acoustic resonator coup...

BI - Akustika a kmity

  • 2012 - 2014
    • •
  • 2 650 tis. Kč
    • •
  • 2 650 tis. Kč
    • •
  • GA ČR
Project

Advanced methods of sound and elastic wave field control acoustic black holes, metamaterials and functionally graded materials (GA22-33896S)

The project deals with the possibilities of using acoustic metamaterials, acoustic black holes (ABHs) and various inhomogeneous structures for advanced manipulation of acoustic and elastic waves. Concerning ABHs, a...

Acoustics

  • 2022 - 2024
    • •
  • 3 863 tis. Kč
    • •
  • 3 863 tis. Kč
    • •
  • GA ČR
Project

Wave effects in the ionosphere and the short-term ionospheric predictions (GA205/01/1071)

Short term variations of the ionosphere (from minutes to several hours) are associated with effects of acoustic gravity waves. Two main sources of acoustic gravity waves exist 1) Waves propagating from hig...

DG - Vědy o atmosféře, meteorologie

  • 2001 - 2003
    • •
  • 1 920 tis. Kč
    • •
  • 730 tis. Kč
    • •
  • GA ČR
Project

Adaptive control of nonlinear waves in circular resonators (GA202/98/P240)

Renewed interest in finite-amplitude acoustic waves in confined geometries has been stimulated by developments in acoustic compressors, thermoacoustic engines, thermoacoustic refrigerators, etc. These devices store energy i...

BI - Akustika a kmity

  • 1998 - 2001
    • •
  • 560 tis. Kč
    • •
  • 545 tis. Kč
    • •
  • GA ČR
Project

Physical acoustics of free surfaces from Green's functions to quasiballistic phonons (GA22-13462S)

for the surface-mediated acoustic waves and heat transfer will be explored.The project will focus on studying the interactions of free surfaces of anisotropic solids with pulse-like thermoacoustic sources, in particular k-...

Applied mechanics

  • 2022 - 2024
    • •
  • 4 434 tis. Kč
    • •
  • 4 434 tis. Kč
    • •
  • GA ČR
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