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WorksheetsVibration Quiz 1
Total questions: 15
Worksheet time: 10mins
Which of these maintenance strategies can ensure the highest original equipment effectiveness (OEE) and uptime
Reactive Maintenance to fix when broken
Planned Maintenance by following the schedule
Proactive Maintenance to eliminate defect
Predictive Maintenance with advance analytics
Which of the following is NOT a technology used in Predictive Maintenance 4.0?
Drone and Robotics inspection
Machine Learning failure detection
Manual human-oriented monitoring with wired sensor
Augmented Reality for smart monitoring
Why is vibration monitoring considered a crucial tool in Structural Health Monitoring (SHM) and Predictive Maintenance (PdM 4.0)?
It reflects machinery condition without disturbing operation (non-destructive)
It always requires shutting down the machine for inspection
It provides a more objective basis for diagnostics and troubleshooting
It is unrelated to machinery performance
Which of the following are benefits of using vibration data in machinery maintenance under PdM 4.0?
Effective scheduling of repair time prior to breakdown
Identification of defective components before failure
Prolonging machine life and increasing availability
Avoiding catastrophic failure and improving safety
Reducing machine reliability
What are the three (3) inherent dynamic characteristics extracted from Experimental Modal Analysis (EMA)
Natural frequencies
Material properties
Damping
Mode shapes
What is a key advantage of Impact-Synchronous Modal Analysis (ISMA) over Experimental Modal Analysis (EMA) in damage identification?
ISMA requires less accurate sensors than EMA
ISMA allows real-time acquisition during operation without shutdown
ISMA relies only on video-based motion tracking
ISMA eliminates the need for FRF measurements
What are the common applications of Modal Analysis
Material properties identifications
Damage identification
Structural health monitoring
Structural dynamic modification
Modal-based SHM directly relates damages to the changes in the system properties. What are the common parameters used for this purpose?
natural frequency
mode shape
frequency response function
vibration amplitude
What are the advantages of using Impact-Synchronous Modal Analysis (ISMA) in modal-based damage identification?
Requires continuous operation shutdown
Allows real-time acquisition without disturbing operation
Provides noise-robust and clean Frequency Response Function (FRF)
Generates highly distorted FRF data
What is the advantage of using PCA-FRF (Principal Component Analysis – Frequency Response Function) in damage identification?
Increases model complexity
Reduces the size and maintains important dynamic characteristics – resonance peaks
Automatically repairs structural faults
Eliminates the need for vibration testing
What is the highest level of damage identification?
Damage presence detection
Damage location identification
Damage severity determination
Remaining useful life (RUL) prediction
What the two (2) common Machine Learning (ML) strategies used for damage detection and identification?
Reinforced Welding Method
Supervised ML
Unsupervised ML
Deterministic Rule-Based Modeling
Hybrid Digital Twin is a combination of which two (2) digital twin models?
Spreadsheet simulation
CAD visualization
Data-driven (Machine Learning/AI-based) model
Physics-based model
Below are the problems of a Machine Learning Digital Twin Model, except:
Direct access to physical system parameters
Require plenty training data
Questionable performance for unseen events
Limited extrapolation capability
Below are the problems of a Physics-based Digital Twin Model, except:
Complicated structure, high-fidelity model
Computationally exhaustive
Easy integration with limited data
Long processing time
