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Experimental Determination of Young's Modulus of Rubber from Static and Dynamic Measurements

Bartko R., Valášek R., Malicková P., Vavro J., Fandáková M.

Machine Dynamics Problems

2006

Vol. 30, No. 3

36-42

One of the most fundamental relations governing the dynamic properties of materials is Hooke's law of elasticity. Hooke's law is a relationship between stress and strain. Hooke's law describes materials which have relatively low damping very accurately. Short theory needed for calculation of elastic modulus, shear modulus and Poison's ratio is presented in this paper. Static measurement stress-strain characteristics of rubber and dynamic tests were described. Calculation of elastic modulus, shear modulus and Poisson's ratio of rubber is shown. Then the influence of strain' velocity on elastic modulus was measured and calculated and complex elastic modulus was calculated from dynamic tests.

Static measurements of 16-bit digital to analog converters in automatic system based on HP-81200 system

Zaręba G.

Studia Informatica

2002

Vol. 23, nr 4

17-28

This article presents an application of HP 81200 platform for automatic testing of digital to analog converters. The HP 81200 platform and a HP-VEE application for static testing of 16-bits digital to analog converters are described. Data achieved by HP-VEE application is used to calculate INL and DNL errors and to estimate SFDR metric.

W artykule opisano zastosowanie platformy HP-81200 do automatycznego testowania 16-bitowych przetworników cyfrowo-analogowych (CA). Platforma HP-81200, kontrolowana przez aplikację HP-VEE, pozwala na przeprowadzenie serii pomiarów służących do wyznaczenia charakterystyki testowanego przetwornika CA. Dane zgromadzone podczas testów służą do wyznaczenia błędów INL, DNT oraz oszacowania wartości SFDR.