Further development of the sound intensity method of measuring tire noise performance of in-situ pavements.
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Help
Clear All

Query Builder

Query box

Help
Clear All

For additional assistance using the Custom Query please check out our Help Page

i

Further development of the sound intensity method of measuring tire noise performance of in-situ pavements.

Filetype[PDF-962.46 KB]


  • English
    • Details You May Also Like

    Details:

    • Corporate Creators:
      Illingworth and Rodkin
    • Subject/TRT Terms:
    • Resource Type:
      Tech Report
    • Geographical Coverage:
      California
    • Corporate Publisher:
      California. Department of Transportation
    • Abstract:
      Through analysis of earlier research and some recent on-road testing it is demonstrated that, with

      adequate precaution, accurate measurement of tire/pavement noise using on-board sound

      intensity (SI) can be accomplished with two intensity probes oriented vertically. As in the single

      probe method, SI is measured in the airflow alongside of a vehicle at locations opposite the

      leading and trailing edges of the tire contact patch. With the two-probe configuration, these data

      can be obtained simultaneously, reducing the number of test runs by a factor of two. It has also

      been found that with a slight risk of more wind induced noise contamination, the use of nose

      cones for the single probe configuration can be eliminated as long as a windscreen is used to

      protect the microphones. The use of a single microphone in exposed flow to measure

      tire/pavement noise sound pressure level (SPL) is not recommended even when fitted with a

      windscreen or nose cone. Although overall tire noise SPL measured in flow may show little

      effect of wind noise contamination when very little or no turbulence is present, individual 1/3

      octave band levels are very likely effected, particularly when only a windscreen is used. When

      turbulence is present due such things as the ambient wind conditions, the wake of the vehicle,

      etc., the background noise due to wind noise contamination increases dramatically. The presence

      and magnitude of this contamination is difficult to determine and could vary from one test to

      another.

    • Format:
      PDF
    • Collection(s):
    • Main Document Checksum:
    • Download URL:
    • File Type:

    Supporting Files

    • No Additional Files

    More +

    You May Also Like

    Checkout today's featured content at rosap.ntl.bts.gov

    Version 3.26