ultrasonic tomography - ορισμός. Τι είναι το ultrasonic tomography
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Τι (ποιος) είναι ultrasonic tomography - ορισμός

NON-DESTRUCTIVE MATERIAL TESTING USING ULTRASONIC WAVES
Ultrasonic inspection; Ultrasonic echo attenuation; Sonic tomography
  • engine]].<br />
''Step 1'': The UT probe is placed on the root of the [[blade]]s to be inspected with the help of a special [[borescope]] tool (video probe).<br />
''Step 2'': Instrument settings are input.<br />
''Step 3'': The probe is scanned over the blade root. In this case, an indication (peak in the data) through the red line (or gate) indicates a good blade; an indication to the left of that range indicates a crack.
  • spline]] cracking
  • phased array]] instrument. The scanner, which consists of a frame with magnetic wheels, holds the probe in contact with the pipe by a spring. The wet area is the ultrasonic couplant that allows the sound to pass into the pipe wall.

Ultrasonic nozzle         
  • High Temperature Ultrasonic Nozzle
Ultrasonic Nozzle
Ultrasonic nozzles are a type of spray nozzle that use high frequency vibrations produced by piezoelectric transducers acting upon the nozzle tip that create capillary waves in a liquid film. Once the amplitude of the capillary waves reaches a critical height (due to the power level supplied by the generator), they become too tall to support themselves and tiny droplets fall off the tip of each wave resulting in atomization.
Photoemission orbital tomography         
  • DFT]] orbital (bottom right).
  • A molecular orbital is transformed from real space to momentum space via a discrete Fourier transform. By taking a hemispherical cut, one obtains a so-called momentum map which corresponds to an intensity map of the photoelectron angular distribution
Draft:Photoemission Orbital Tomography; Photoemission Orbital Tomography; Photoemission tomography; Draft:Photoemission tomography
In physics and chemistry, photoemission orbital tomography (POT; sometimes called photoemission tomography) is a combined experimental / theoretical approach which reveals information about the spatial distribution of individual molecular orbitals. Experimentally, it uses angle-resolved photoemission spectroscopy (ARPES) to obtain constant binding energy photoemission angular distribution maps, so-called tomograms (also known as momentum maps or k-maps), to reveal information about the electron probability distribution in molecular orbitals.
Quantum tomography         
  • Figure 2: Many identical oscillators represented in the phase space by their momentum and position
  • Figure 3: Marginal Distribution
RECONSTRUCTION OF A QUANTUM STATE BASED ON MEASUREMENTS ON AN ENSEMBLE OF IDENTICAL QUANTUM STATES
Quantum state tomography; Quantum process tomography
Quantum tomography or quantum state tomography is the process by which a quantum state is reconstructed using measurements on an ensemble of identical quantum states.Quantum State Tomography.

Βικιπαίδεια

Ultrasonic testing

Ultrasonic testing (UT) is a family of non-destructive testing techniques based on the propagation of ultrasonic waves in the object or material tested. In most common UT applications, very short ultrasonic pulse-waves with center frequencies ranging from 0.1-15 MHz, and occasionally up to 50 MHz, are transmitted into materials to detect internal flaws or to characterize materials. A common example is ultrasonic thickness measurement, which tests the thickness of the test object, for example, to monitor pipework corrosion.

Ultrasonic testing is often performed on steel and other metals and alloys, though it can also be used on concrete, wood and composites, albeit with less resolution. It is used in many industries including steel and aluminium construction, metallurgy, manufacturing, aerospace, automotive and other transportation sectors.