Appareil automatique pour la mesure du frottement intérieur et du défaut de module en pendule de torsion inverse
Abstract
An electronic system has been developed for measuring the internal friction and modular fault of an inverse-torsion pendulum in a mode of operation of free damping. The quantities are measured as a function of temperature, in the 0.1-10 Hz frequency range. The system employs measurements of transit time between point photocells, which allows the use of logic systems for the electronics.
- Publication:
-
Zeitschrift Angewandte Mathematik und Physik
- Pub Date:
- March 1977
- DOI:
- Bibcode:
- 1977ZaMP...28..368G
- Keywords:
-
- Automatic Test Equipment;
- Failure Analysis;
- Internal Friction;
- Measuring Instruments;
- Pendulums;
- Torsion;
- Electronic Equipment;
- Laser Applications;
- Logic Circuits;
- Photoelectric Cells;
- Transit Time;
- Instrumentation and Photography