Note on Ultrasonic Absorption of Glass at Elevated Temperatures

Abstract

The ultrasonic transmission properties of sodalime glass at elevated temperatures were measured in the frequency range 0.25 to 1.0 mc. Single-crystal sapphire rods were used as transmission lines between the sample and barium titanate transducers. A small but uniform increase in absorption of energy was noted up to 800'F. From 800' to 15OO0F. there was a great increase in absorption of energy. At 1500' the energy passing through 1 cm. of sodalime glass was of the incident energy.