Using Acoustic Bearing Detector - National Coal Transportation

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Using Acoustic Bearing Detector - National Coal Transportation
Railway Fleet
Management:
Using Acoustic
Bearing Detector
(ABD) Data
RB Wiley
Sr. Principal Investigator, TTCI
Association of American Railroads
15 June, 2016
Using Acoustic Bearing Detector Data
•
•
•
•
•
•
ABD (acoustic bearing detector)
Rule 36.A.4 Acoustic Bearing Detector Defect
Two ABD Brands
AAR EHMS Alerts
Bearing Defect Acoustic Signatures
Acoustic Bearing Data Variation
ABD
• Wayside railcar bearing noise
monitoring
• Mainline tangent track
• Normal speed ranges
• Locomotives
EHMS Performance Data:
ABD
N
Wayside Detectors
27 (15)
21 (19)
(reporting) 1000
0
1000
2000 Miles
InteRRIS® Wayside Detector Distribution
Detector sites as of: 05/26/2016
Based on USGS DLG; 1:20,000,000 Geographic Projection, DD.
2016 ©, Transportation Technology Center, Inc.
•Rule 36.A.4 Acoustic Bearing Detector Defect
• Verified vs. Validated
• Validated ABD site
• 45/50 bearings: Level-1 defects
• 5/50 bearings: defects found
• Verified detection (by failed hand roll)
• WM 96
• Non-Verified (by passing hand roll) or
Non-validated (teardown required)
• WM 91
Two ABD Brands in North America
TADS®
• Trackside Acoustic
Detection System
•
http://www.aar.com/pdfs/TADS_OnePager.pdf
RailBAM®
• Rail Bearing Acoustic
Monitor
•
http://www.trackiq.com.au/railbam.shtml
• TTCI (AAR subsidiary)
• TrackIQ (Wabtec subsidiary)
• AAR research project (SRI) • Vipac reorg’d as TrackIQ
originally
before acquisition in 2016
• Portable option
Two ABD Brands in North America (cont.)
TADS®
RailBAM®
Two ABD Brands in North America (cont.):
Defect Classification
•
•
•
•
•
•
TADS®
Cup
Cone
Roller
Multiple
Growler
Unknown
RailBAM®
RS#_p
RS#_n
RS#_r
RS#_m
RS#_e [=> ERS]
RS#
Two ABD Brands in North America (cont.):
Defect Severity Rank
• Severity
• • 1
• 2
• 3
• 4
• 5
TADS®
no defect
[least severe]
[most severe]
Severity
• 4
• RS#
• RS3_?
• RS2_?
• RS1_?
RailBAM®
No defect
[1-3: unknown]
[most severe]
AAR EHMS Alerts:
Today
• Condemnable ABD:
•
TADS® Growler 5
•
RailBAM® ERS1
PAGE 10
Now & almost Now
Soon
• Condemnable ABD:
• Multiple
• Roller
• Cone
• Cup
© ASSOCIATION OF AMERICAN RAILROADS
Bearing Defect Acoustic Signatures:
Normal
Realtime
8X Slower
Bearing Defect Acoustic Signatures:
Cup
Characteristics
• Frequency isolated to the
outer race
• Distinct sound: spall, brinell
• Not extended surface
Cup Signature
Bearing Defect Acoustic Signatures:
Cone
Characteristics
Cone Characteristic
• Frequency isolated to the
inner race
• Distinct sound: spall, brinell
• Not extended surface
Bearing Defect Acoustic Signatures:
Roller
Characteristics
• Frequency isolated to a
roller or rollers
• Distinct sound: spall, brinell
• Not extended surface
Roller Signature
Bearing Defect Acoustic Signatures:
Multiple
Characteristics
• More than one surface has
distinguishable defects
• Any combination
• Cup\Cone
• Cup\Roller
• Etc.
• Frequencies can be
segregated
Multiple Signature
Bearing Defect Acoustic Signatures:
ERS \ Growler
•
•
•
•
Characteristics
Large orange peel
Large area spalling
Non-distinct frequency
Coarse and changing
sounds
Growler signature
Acoustic Bearing Data Variation
• Factors Affecting Defect Identification
•
•
•
•
Speed
Load
Orientation
Chance
….EXIT PRESENTATION MODE…
Acoustic Bearing Data Variation (cont.)
Acoustic Bearing Data Variation (cont.)
Questions?
Thank You!, for your time and interest.
PAGE 20
© ASSOCIATION OF AMERICAN RAILROADS

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