Accession Number:

ADA063475

Title:

Vibrational Response Spectroscopy (VRS). Extension of Acoustic Emission Techniques to Combustion Diagnostic Use.

Descriptive Note:

Technical memo. 1 Oct-31 Dec 76,

Corporate Author:

NAVAL WEAPONS CENTER CHINA LAKE CALIF

Personal Author(s):

• Eisel,John L.

Report Date:

1977-04-01

Pagination or Media Count:

17.0

Abstract:

Vibrational response spectroscopy VRS is an attempt to adapt a relatively new technology to the study of the transition from deflagration to detonation DDT of high energy solid propellants. This technology is actually two technologies very similar in concept but differing greatly in their range and area of application. They are vibrational analysis the response of mechanical devices and structures to imposed mechanical vibrations, and acoustic emission AE analysis the recording and assessing of stress waves in solid structures. Vibrational analysis usually operates in the frequency range from DC to 10-30 kHz. In contrast AE is concerned with frequencies from hundreds of kilohertz to several megahertz. VRS was initially intended to span the range from 0-200 kHz, but a number of preliminary findings have led to a planned extension to higher frequencies.

Descriptors:

• *DETONATIONS
• *SOLID ROCKET PROPELLANTS
• *DEFLAGRATION
• SPECTROSCOPY
• TEST METHODS
• COMBUSTION
• STRUCTURAL RESPONSE
• TRANSITIONS
• ACOUSTIC EMISSIONS
• VIBRATIONAL SPECTRA

Subject Categories:

• Explosions
• Combustion and Ignition
• Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE