Accession Number : AD0446394

Title :   EFFECTS OF ULTRASOUND ON DEFORMATION CHARACTERISTICS OF STRUCTURAL METALS 1 JULY 1963-30 JUNE 1964. PART 1. APPLICATION OF PHOTOELASTICITY,

Corporate Author : NAVAL ORDNANCE TEST STATION CHINA LAKE CA

Personal Author(s) : Frandsen, W. H. ; Langenecker, J. A. M.

Report Date : AUG 1964

Pagination or Media Count : 10

Abstract : Intense ultrasound having power levels up to 100 w/sq cm at 20 kc is used in studies of mechanisms of metal deformation and treatment. To provide accurate quantitative information about the underlying experimental conditions, Part 1 of this progress report describes detailed investigations of modes of propagation of intense ultrasonic stress waves in rods and bars. Part 2 will be concerned with measurements of conversion of acoustic energy into heat and kinetic energy of lattice imperfections. Parts 3 and 4 will illustrate experiments in which high strain rate tensile tests, and intense pulsed ultrasound were applied. A discussion of ultrasonic metal deformation will be given in the final Part 5 along with a comparison of our observations with results and viewpoints from other reports on this subject. (Author)

Descriptors :   (*ULTRASONIC RADIATION, STRESSES), (*MECHANICAL WAVES, ULTRASONIC RADIATION), (*METALS, DEFORMATION), PROPAGATION, PHOTOELASTICITY, TRANSDUCERS, POLARISCOPES, RODS, ACRYLIC RESINS, ZONE MELTING, BERYLLIUM.

Distribution Statement : APPROVED FOR PUBLIC RELEASE