An experimental investigation of the internal friction of small diameter quartz strands at low frequencies

The extension of the oscillating disk method of measuring the viscosity of gases to temperatures of the order of 1000° C necessitates the use of a suspension wire whose internal friction is considerably less than that found for platinum alloy wires by Kestin and Moszynski. This, together with considerations of creep, thermal expansion and chemical inertness, suggested quartz as a suitable material. This report describes tests which were carried out to determine the internal friction of small diameter quartz strands suited for use in an oscillating disk viscometer.