Construcción de un péndulo de torsión para la medida de la fricción interna a bajas temperaturas

J. M. San Juan; I. Gallego; M. L. Nó

doi:10.3989/revmetalm.2001.v37.i2.467

Design and assembly of a torsion pendulum for the measurement of internal friction at low temperatures

Authors

J. M. San Juan Departamento de Física de la Materia Condensada. Faculta de Ciencias. Universidad del País Vasco
I. Gallego Departamento de Física Aplicada II. Facultad de Ciencias. Universidad del País Vasco (UPV/EHU).
M. L. Nó Departamento de Física Aplicada II. Facultad de Ciencias. Universidad del País Vasco (UPV/EHU).

DOI:

https://doi.org/10.3989/revmetalm.2001.v37.i2.467

Keywords:

Internal friction, Torsion pendulum, Dynamic modulus, Low temperature,

Abstract

In this work we describe the assembly, operation and specifications of an inverted torsion pendulum designed to measure internal friction at low temperatures (from 4.2 K to 500 K). The high precision mechanics allow us to obtain internal friction spectra with low levels of noise from amplitudes as small as 2x10^-7. The inertia components of the pendulum have been built with specific materials, so that the resonance frequency of the pendulum can be changed within two orders of magnitude (0.1-10 Hz). In addition, the sample can be in situ deformed at any temperature and can be inserted into the pendulum at liquid nitrogen temperature. The operation of the pendulum, all the control processes and data acquisition are completely automated.

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Published

2001-04-30

How to Cite

San Juan, J. M., Gallego, I., & Nó, M. L. (2001). Design and assembly of a torsion pendulum for the measurement of internal friction at low temperatures. Revista De Metalurgia, 37(2), 209–214. https://doi.org/10.3989/revmetalm.2001.v37.i2.467

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Issue

Vol. 37 No. 2 (2001)

Section

Articles

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