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Filtering by: Subject Internal friction -- Measurement

A method for rapid measurement of the rate of decay of free vibrations

Creator:

James, William L. and Forest Products Laboratory (U.S.)

Abstract:

Information reviewed and reaffirmed in 1965.,Information reviewed and reaffirmed 1965. Original report issued August 1959.

Resource Type:

Technical Report

Full Text:

friction itself. This report describes apparatus and techniques that permit rapid measurement of internal
Activation energies for impurities in vanadium from measurements of internal friction

Creator:

Pradhan, Shanker Prasad

Abstract:

The capacity of a vibrating solid to convert its mechanical energy of vibration into heat is called internal friction. Its most common manifestation is the damping effect which causes loss in vibration amplitude of a freely vibrating solid. The damping is a result of the anelastic behaviour of materials. This...

Resource Type:

Dissertation

Full Text:

determination of the amplitude independent internal friction. For temperatures of measurement above a
Temperature dependence of internal friction in silicon at low frequency

Creator:

Eliason, Jon Tate

Abstract:

This investigation represents a previously unreported method of measurement of internal friction in single crystals of silicon. The method consists of exciting a rectangular reed of silicon of uniform cross section into forced vibration at its resonant frequency. The end of the reed is silver plated and eddy currents induced...

Resource Type:

Masters Thesis

Full Text:

previously unreported method of measurement of internal friction in single crystals of silicon. The