Project ARTEMIS High Power Acoustic Source
Abstract
U.S. Naval Research Laboratory Memorandum Reports 1205, 1214 and 1273 presented the results of initial tests with the ARTEMIS source. In those tests, it was learned that the permissible operating power level is severely restricted by abnormally large transducer deflections which can cause mechanical destruction of the transducer elements. This report describes two additional series of tests which were intended to evaluate the effectiveness of three techniques for reducing the effects of acoustic interaction on transducer element velocity distribution. These techniques included (1) element electrical connections, (2) tuning at each element, and (3) mechanical assembly of groups of elements to form larger elements. Evidence is presented which leads to the conclusion that the permissible operating power level can be substantially increased. Additional information is introduced concerning the manner in which nonrectilinear vibrational modes in the transducer element contribute to the power limitation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 12, 1963
- Accession Number
- ADA035002
Entities
People
- R. H. Ferris
Organizations
- United States Naval Research Laboratory