STP1030

    An Acoustic Technique for Evaluation of Thermal Insulation

    Published: Jan 1990


      Format Pages Price  
    PDF Version (452K) 24 $25   ADD TO CART
    Complete Source PDF (14M) 24 $104   ADD TO CART


    Abstract

    A laboratory apparatus has been constructed that enables rapid measurement of the sound insertion loss of a sample of insulation as a function of frequency. An extensive series of measurements of the sound insertion losses associated with blown samples of fiberglass, rockwool, and cellulose has been completed; the results of these acoustic measurements are highly correlated with coverage (mass per unit area) and thermal resistance (R-value). An investigation is planned to extend the acoustic techniques used in the laboratory apparatus to in situ determination of the sound transmission loss through thermal insulation installed in attics. Two possible approaches to such field measurements are described.

    Keywords:

    acoustics, attic insulation, heat flow, heat transfer, insulation, non-destructive evaluation, non-destructive testing, sound attenuation, sound propagation, thermal conductivity, thermal insulation, thermal resistance


    Author Information:

    Flynn, DR
    Supervisory Physicist, Mechanical Engineer, and Physicist, National Institute of Standards and Technology, Gaithersburg, MD

    Evans, DJ
    Supervisory Physicist, Mechanical Engineer, and Physicist, National Institute of Standards and Technology, Gaithersburg, MD

    Bartel, TW
    Supervisory Physicist, Mechanical Engineer, and Physicist, National Institute of Standards and Technology, Gaithersburg, MD


    Paper ID: STP23316S

    Committee/Subcommittee: C16.16

    DOI: 10.1520/STP23316S


    CrossRef ASTM International is a member of CrossRef.