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1.
V. L. Zemlyakov 《Measurement Techniques》2006,49(10):1064-1067
The possibility of measuring the piezoelectric modulus by exciting piezoelectric ceramic components with a radio pulse is
considered. It is shown that there is a relation between the piezoelectric modulus and the rate of change of the current envelope
at the beginning of the transient. Theoretical relations are derived.
__________
Translated from Izmeritel’naya Tekhnika, No. 10, pp. 71–72, October, 2006. 相似文献
2.
A new method of measuring the parameters of a piezoceramic element is proposed, the basis of which is the maximum values of
the amplitudes of the conductance and its derivative. The method only requires simple automated instruments. 相似文献
3.
介绍了过氯酰胺盐的一些性质,指出过氯酰胺盐是激光起爆阈值低的光敏炸药。用10%光学透明的聚合物分别50mg/cm^2的过氯酰胺钾和过氯酰胺钡制1cm^2的光敏炸药薄板并进行了实验。Ⅱ的起爆阈值经久0.1J/cm^2,Ⅳ的起爆阈值为5-7mJ/cm^2,皆低于压装的叠氮化铅药柱,全都实现了平面起爆。 相似文献
4.
5.
A new adaptation algorithm was proposed for reference model-based systems operating independently of the intensity and spectral
composition of the input actions. This fact enables one to make predictable the dynamic precision of the reference model-based
adaptive system which, by the authors’ opinion, is the stumbling block to wide practicalization of the systems of the class
under consideration. 相似文献
6.
7.
Approximate formulas are obtained for various parameters of a piezoelectric material in the form of a disk, which do not require the calculation of the least (first) root of the frequency equation. To calculate approximately the planar electromechanical coupling coefficient, one can simplify the measurement procedure because it is not necessary to measure the first overtone frequency and determine Poisson's ratio. 相似文献
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10.
V. I. Anisimkin É. Verona V. E. Zemlyakov R. G. Kryshtal’ A. V. Medved’ 《Technical Physics Letters》1998,24(8):640-642
A new device has been proposed and tested experimentally for the discrimination of gases in “electronic nose” systems. The
device consists of an array of surface-acoustic wave (SAW) sensors positioned on a single anisotropic substrate with a common
gas-sensitive coating for each sensor. The specificity of the sensors is provided entirely by the elastic anisotropy of the
single-crystal substrate: changes in the direction of propagation of the wave through the gas-sensitive film deposited on
the anisotropic substrate are accompanied by changes in the partial components of the mechanical displacement of the wave
and corresponding contributions to the resultant SAW “response.”
Pis’ma Zh. Tekh. Fiz. 24, 40–45 (August 26, 1998) 相似文献