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Crystal (ut)
| Глоссарий терминов по технологиям неразрушающего контроля (NDT) |
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Transducer element, английский
- In an ultrasonic transducer, the piezoelectric crystal to be coupled to the test surface. also called the crystal. transducer, flat response: transducer whose frequency response has no resonance or characteristic response within its specified frequency band. the ratio between the upper and lower limits of the frequency band are typically not less than 500 khz. transducer, resonant: transducer that uses the mechanical amplification due to a resonant frequency (or several close resonant frequencies) to give high sensitivity in a narrow band, typically ±10 percent of the principal resonant frequency at the –3 db points. transducer, wide band: transducer whose response to surface displacements is relatively flat over a broad frequency range.
- In an ultrasonic transducer, the piezoelectric crystal to be coupled to the test surface. also called the crystal. transducer, flat response: transducer whose frequency response has no resonance or characteristic response within its specified frequency band.16
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(ut) videtur, латинский
Crystal, английский
- A solid with a regular array of atoms. sapphire (ruby laser) and yag (nd:yag laser) are two crystalline materials used as laser sources.
- A chemical formation of hard regular-shaped solids
- A type of inclusion. a crystal is a mineral deposit trapped inside the diamond.
- The regular solid geometric form assumed by a crystallized chemical element or compound, such as the dodecahedral, octahedral, cuboid, or other shapes assumed by a diamond.
- A clear, flawless diamond.
- Homogeneous solid chemical element or compound having a regular
- See transducer element. crystal, x cut: in ultrasonic testing, cut with face perpendicular to the x direction of the piezoelectric crystal. in a quartz slice so cut, a thickness mode of vibration occurs when the slice is electrically stimulated in the x direction. see also transducer element.15 crystal, y cut: in ultrasonic testing, piezoelectric crystal whose cut face is perpendicular to the y direction. in quartz, a transverse mode of vibration is obtained when the slice is electrically stimulated in the y direction. see also transducer element.15
- See transducer element. crystal, x-cut: cut with face perpendicular to the x-direction of the piezoelectric crystal.7 in a quartz slice so cut, a thickness mode of vibration occurs when the slice is electrically stimulated in the x direction.7,22 crystal, y-cut: piezoelectric crystal whose cut face is perpendicular to the y direction. in quartz, a transverse mode of vibration is obtained when the slice is electrically stimulated in the y direction.7,22
Crystal aggregate, английский
Crystal axes, английский
Crystal axis, английский
Crystal bar, английский
Crystal casts, английский
Crystal chemistry, английский
Crystal chromatic light, английский
Lamp unit which is white or clear when unlit, but which gives off amber or other colored light, dependent on type of filter, when lit.
Crystal class, английский
Crystal clock, английский
Кварцевый генератор тактовых импульсов crystal-controlled кварцованный c/s клиент/сервер
Crystal control, английский
Crystal defect, английский
Crystal defects, английский
Crystal diamagnetism, английский
Crystal diffraction, английский
Crystal face, английский
One of the several flat or plane exterior surfaces of a crystal. see crystal.
Crystal filter, английский
Кварцевый фильтр
Crystal flotation, английский
Crystal form, английский
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Transducer element, английский
- In an ultrasonic transducer, the piezoelectric crystal to be coupled to the test surface. also called the crystal. transducer, flat response: transducer whose frequency response has no resonance or characteristic response within its specified frequency band. the ratio between the upper and lower limits of the frequency band are typically not less than 500 khz. transducer, resonant: transducer that uses the mechanical amplification due to a resonant frequency (or several close resonant frequencies) to give high sensitivity in a narrow band, typically ±10 percent of the principal resonant frequency at the –3 db points. transducer, wide band: transducer whose response to surface displacements is relatively flat over a broad frequency range.
- In an ultrasonic transducer, the piezoelectric crystal to be coupled to the test surface. also called the crystal. transducer, flat response: transducer whose frequency response has no resonance or characteristic response within its specified frequency band.16
Cracks, heat treating, английский
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