Accession Number:

AD0687919

Title:

SOUND ABSORPTION TESTS ON POLYURETHANE AND LIQUID SOAP FOAMS FOR ANECHOIC ENCLOSURES

Descriptive Note:

Test rept.

Corporate Author:

NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF MECHANICAL ENGINEERING

Personal Author(s):

• Krishnappa, G.
• Levy, G. G.
• Macaulay, G. A.

Report Date:

1969-02-01

Pagination or Media Count:

17.0

Abstract:

An investigation was made of the normal and random incidence absorption of samples of 2-in thick polyurethane foam selected for use in the construction of an anechoic enclosure for lifting-fan noise studies.

Descriptors:

• *ACOUSTIC INSULATION
• *ANECHOIC CHAMBERS
• *PROPELLER NOISE
• CANADA
• DUCTED FANS
• EXPANDED PLASTICS
• FOAM
• ISOCYANATES
• MEASUREMENT
• SOAPS
• TEST FACILITIES

Subject Categories:

• Test Facilities, Equipment and Methods
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE