THE INTERFACE OF CONDITION MONITORING &...
Transcript of THE INTERFACE OF CONDITION MONITORING &...
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IOT: THE INTERFACE OF CONDITION
MONITORING & RELIABILITY
N A G I G E B R A E E LA S S O C I AT E P R O F E S S O RI N D U S T R I A L A N D S Y S T E M S E N G I N E E R I N G
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BACKGROUND
• The advent of inexpensive sensor technologies and wireless communications have enabled numerous industrial IoT applications.
• Asset Monitoring and Management is one of the fastest growing industrial applications of IoT.
• Some key challenges that need to be addressed• How to combine asset monitoring data with existing reliability programs?
• How to effectively analyze and visualize asset monitoring?
• How to use these analytics to enable an efficient decision making process (maintenance/operational/logistical)?
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RELIABILITY AND CONDITION MONITORING
• Difference between Reliability and Condition Monitoring
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BACKGROUND
• What do we typically do in Reliability Analysis?
Cumulative Operating Time
Num
ber o
f Fai
lure
s
Cumulative Opt. Time
Pro
babi
lity
of F
ailu
re
Range of failure uncertainty
Likely failure timeMTTF or MTBF
Replaced Prematurely
Unexpected Failures
Maintenance Records
Step 1Collect/Organize
Maintenance Records
Step 2Visualize and Analyze
Failure Events
Step 3Reliability Risk Profile
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BACKGROUND
• What do we typically do in Condition Monitoring?
Step 1Identify & Collect
Data Sources
Step 2Visualize & Define Baseline Patterns
Step 3Classification & Detection
Equipment ID Baselines & Standards
Historical Sensor Data
Real-time Sensor Data
Step 4Early Warning &
Severity Classification
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WHAT’S THE PROBLEM?
• What is achievable using Reliability Analysis cannot be accomplished by Condition Monitoring.
• Quantifying Failure Uncertainty
• Managing and Monetizing risk
• Strategic Planning and Decision Making (PMs)
• What is achievable using Condition Monitoring cannot be accomplished using Reliability analysis.
• Visibility into the asset health
• Fault Detection and Diagnostics
Cumulative Opt. Time
Prob
abilit
y of
Fai
lure
Range of failure uncertainty
Likely failure timeMTTF or MTBF
Replaced Prematurely
Unexpected Failures
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INTEGRATING RELIABILITY & CONDITION MONITORING
Condition Monitoring
Reliability
Decision Making
(Monetization)
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SYSTEM INPUTS: LET’S START WITH RELIABILITY INFO.
Cost of Unexpected Failure
Cost of SparePart Stockout
Lead Time (Supplier to Warehouse)
Storage/carrying Cost (per day)
Preventive Maintenance
Reliability Risk Profile
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STRETCHING RELIABILITY DATA TO ITS LIMITS
Reliability Risk Profile
Probability Distribution
Repair/Replacement Cost Function
MTTF
Optimal Repair or Replacement Time
(2.7 mons.)
Spare Part Inventory Cost FunctionOptimal Spare Part
Ordering Time(1.5 mons)
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0200
400600
8001000
0
50
1000
0.02
0.04
0.06
0.08
Frequency (Hz)% of Life Accomplished (mins)
Am
plitu
de (V
rms)
EXAMPLE OF CONDITION MONITORING DATA
Ampl
itude
/Sev
erity
Lev
el
• Vibration signatures acquiredas the asset/equipmentprogresses over its lifecycle
• The figure shows post-processed vibration dataat different life percentiles of the equipment.
• Fault-specific features extracted in real-time (red dots) and modeledover time.
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UPDATING RELIABILITY USING REAL-TIME CONDITION MONITORING DATA
Real-time Condition Monitoring Data
UpdatedRisk Profile
(Remaining Life)
Updated Probability Distribution
Updated Replace. Cost Function
Optimal Repair or Replacement Time
(1.3 mons.)
Optimal SpareOrdering Time
(1 week)
Updated Spare Part Inventory Cost
Function
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DEMO
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EXAMPLE OF DEPLOYMENT INTERFACE
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Fleet Health Management System
Fleet Detections Prognostics & RUL Replacements Service Logistics
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Fleet Health Management System
Fleet Detections Prognostics & RUL Replacements Service Logistics
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Fleet Health Management System
Fleet Detections Prognostics & RUL Replacements Service Logistics
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THANK YOU