Feasibility of Flaw Detection in Railroad Wheels Using Acoustic Signatures

Nagy K.; Finch, R. D.; John A. Volpe National Transportation Systems Center, (U.S.); University of Houston

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Feasibility of Flaw Detection in Railroad Wheels Using Acoustic Signatures

1976-10-01
By Nagy K. ; Finch, R. D.

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English

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Details:

Creators:

Nagy K. ; Finch, R. D.

Nagy K. ; Finch, R. D. Less -
Corporate Creators:

John A. Volpe National Transportation Systems Center, (U.S.) ; University of Houston

John A. Volpe National Transportation Systems Center, (U.S.) ; University of Houston Less -
Corporate Contributors:

United States. Federal Railroad Administration
Subject/TRT Terms:

[+]

Acoustic Signature Computer Printouts Cracking Defects Flaw Detection Inspection Nondestructive Tests Pattern Recognition Systems Railroad Cars Sonic Tests Ultrasonic Detectors Ultrasonic Tests Wheels
Publication/ Report Number:

DOT-TSC-FRA-76-6 ; FRA/ORD-76/290

DOT-TSC-FRA-76-6 ; FRA/ORD-76/290 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Railroad Administration
NTL Classification:

AGR-SAFETY AND SECURITY-SAFETY AND SECURITY;NTL-RAIL TRANSPORTATION-RAIL TRANSPORTATION;NTL-RAIL TRANSPORTATION-Rail Safety;NTL-SAFETY AND SECURITY-Rail Safety;NTL-SAFETY AND SECURITY-Vehicle Design;
Abstract:

The feasibility study on the use of acoustic signatures for detection of flaws in railway wheels was conducted with the ultimate objective of development of an intrack device for moving cars. Determinations of the natural modes of vibrating wheels under various conditions are reported. Differences in acoustic signatures are found between good and cracked wheels, including spectral changes and variations in the time decay of sound. Various sounds occurring in normal railroad practice, such as rolling noise on welded rail and over joints and retarder screech were investigated. It was concluded that special purpose impacters will have to be used for a servicable device. Pattern recognition techniques were used for selecting good and bad wheels with a computerized processing scheme. A laboratory demonstration system has been constructed and found to be 85% reliable when system malfunctions are discounted.
Format:

PDF
Funding:

DOT-FR-30002
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:dea21e7eaa1865dfc6b5eff2f4269ba2e28882e09c6f74c98f8b1c999a289a79
Download URL:

https://rosap.ntl.bts.gov/view/dot/10318/dot_10318_DS1.pdf
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Feasibility of Flaw Detection in Railroad Wheels Using Acoustic Signatures

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