TRANSDUCER POWER OUTPUT OBTAINED FROM NEAR-FIELD PRESSURE AMPLITUDE AND PHASE MEASUREMENTS

Abstract

The calculation of acoustic power from near-field measurements of piston-type transducers is described, and the results are compared with those calculated from far-field measurements under the same conditions. The near- field measurements, which are required when transducers are calibrated in small- volume pressure tanks, are of two types: axial-pressure measurements, and radial-pressure measurements in a plane near the active face. It is shown that the axial pressure method is superior for reasons of simplicity in measurement and calculation.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1963
Accession Number
AD0295634

Entities

People

  • F. B. Stumpf

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Far Field
  • Measurement
  • Measuring Instruments
  • Military Research
  • Munitions
  • Naval Operations
  • Navy
  • Near Field
  • New York
  • Ordnance Laboratories
  • Phase Measurement
  • Physics Laboratories
  • Plane Waves
  • Pressure Distribution
  • Pressure Measurement
  • Test And Evaluation
  • Test Facilities

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Neurodegenerative Parkinson's Disease and Rickettsial Disease handbook, including the data level of dopamine, BC, neurons, and PD.
  • Systems Analysis and Design