Accession Number : AD0659489

Title :   HEATING OF SOLID RODS BY ULTRASOUND.

Descriptive Note : Research rept.,

Corporate Author : NAVAL WEAPONS CENTER CHINA LAKE CALIF

Personal Author(s) : Frandsen,W. ; Chen,E. ; Langenecker,B.

Report Date : SEP 1967

Pagination or Media Count : 19

Abstract : Heating of rod-shaped materials by high-intensity ultrasound at 20 kHz is described. Results are presented as time-sequenced temperature profiles along a line parallel to the axis of the rod. The heat absorbed by the rod is calculated from these profiles and leads to a measure of the coupling efficiency. Temperature measurements are accomplished by infrared means and range from 250C--600C for steel, 50C--350C for aluminum, and 25C--50C for plastic. Regions of sonic stress are observed in plastic by employment of the principle of photoelasticity and show the coincidence of maximum stress with maximum temperature. (Author)

Descriptors :   (*HEATING, ULTRASONIC RADIATION), RODS, SOLIDS, ACRYLIC RESINS, STRESSES, STEEL, ALUMINUM

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE