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Title: Transition section for acoustic waveguides

Abstract

A means of facilitating the transmission of acoustic waves with minimal reflection between two regions having different specific acoustic impedances is described comprising a region exhibiting a constant product of cross-sectional area and specific acoustic impedance at each cross-sectional plane along the axis of the transition region. A variety of structures that exhibit this feature is disclosed, the preferred embodiment comprising a nested structure of doubly reentrant cones. This structure is useful for monitoring the operation of nuclear reactors in which random acoustic signals are generated in the course of operation.

Inventors:
Issue Date:
OSTI Identifier:
4054139
Patent Number(s):
3915018
Assignee:
to U.S. Energy Research and Development Administration
Patent Classifications (CPCs):
G - PHYSICS G10 - MUSICAL INSTRUMENTS G10K - SOUND-PRODUCING DEVICES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
NSA Number:
NSA-33-028187
Resource Type:
Patent
Resource Relation:
Patent File Date: 1974 Nov 21; Other Information: G01H3/10. Orig. Receipt Date: 30-JUN-76
Country of Publication:
United States
Language:
English
Subject:
N79200* -Reactors-Reactor Components & Accessories; 220200* -Nuclear Reactor Technology-Components & Accessories; *IN CORE INSTRUMENTS; *REACTOR OPERATION- ACOUSTIC MONITORING; *WAVEGUIDES- DESIGN; SOUND WAVES

Citation Formats

Karplus, H H.B. Transition section for acoustic waveguides. United States: N. p., 1975. Web.
Karplus, H H.B. Transition section for acoustic waveguides. United States.
Karplus, H H.B. Tue . "Transition section for acoustic waveguides". United States.
@article{osti_4054139,
title = {Transition section for acoustic waveguides},
author = {Karplus, H H.B.},
abstractNote = {A means of facilitating the transmission of acoustic waves with minimal reflection between two regions having different specific acoustic impedances is described comprising a region exhibiting a constant product of cross-sectional area and specific acoustic impedance at each cross-sectional plane along the axis of the transition region. A variety of structures that exhibit this feature is disclosed, the preferred embodiment comprising a nested structure of doubly reentrant cones. This structure is useful for monitoring the operation of nuclear reactors in which random acoustic signals are generated in the course of operation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1975},
month = {10}
}