Accession Number : ADA322081

Title :   Vibration Isolator Test Facility.

Descriptive Note : Technical rept.,

Corporate Author : DEFENCE SCIENCE AND TECHNOLOGY ORGANIZATION CANBERRA (AUSTRALIA)

Personal Author(s) : Dickens, J. D. ; Norwood, C. J.

PDF Url : ADA322081

Report Date : JUN 1996

Pagination or Media Count : 37

Abstract : This report details the development of a vibration isolator test facility at the Aeronautical and Maritime Research Laboratory. The test facility was designed to investigate the acoustic transmission characteristics of resilient vibration isolating mounts for shipboard machinery. The characteristics of the isolators are described in terms of their four pole parameters. Features of the test facility include the capability to sense low level motion and the provision of a variable preload up to 60 kN. A modal analysis was conducted with the boundary conditions that are experienced in an actual test situation. This revealed details concerning the influence of structural modes on the test measurements, and led to location of the sensing accelerometers which permitted data to be obtained out to 1 kHz with confidence. This report also describes the testing of a typical ship machinery mount in the test facility by determining the four pole parameters of the vibration isolator.

Descriptors :   *VIBRATION ISOLATORS, *TEST FACILITIES, VIBRATION, ACCELEROMETERS, SHIP SIGNATURES, DAMPING, SOUND TRANSMISSION, SHIPBOARD, ACOUSTIC MEASUREMENT, MOUNTS, NOISE REDUCTION, ACOUSTIC SIGNATURES, AUSTRALIA, MACHINERY NOISE, SHIP AUXILIARY EQUIPMENT, RESILIENCE.

Subject Categories : Test Facilities, Equipment and Methods
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE