DATA 512 – Fundamentals of Automotive Dynamic Instrumentation
Overview for management and participants
- Why might data be needed? Who might need it? What data?
- Force, Motion (vibration and shock), Pressure, Temperature, Strain
- Approximate scheduling so managers can audit special topics
Quiz for evaluation of attendee prior knowledge
Sensor principles
- Passive sensors, i.e. Wheatstone bridge
- Self-generating sensors, i.e. piezoelectric (crystal)
- “Smart” sensors
Classical sinusoidal quantities never observed in service, but a useful concept
- Sinusoidal signal terminology
- Displacement vs. velocity vs. acceleration vs. jerk
- Sinusoidal measurements under ideal conditions: units, sensors, readouts, errors
- Force; load cells
- Motion (vibration and crash/shock); emphasis on accelerometers
- Pressure; strain, temperature
Ideal conditions seldom found; what to do?
- Structural resonant behavior of vehicle
- Structural resonant behavior of attachment bracket
- Structural resonant behavior of test article
- Sensor resonant behavior
- Selecting best transducer
- Upward trend in frequency
- Electrical and mechanical interference
- Attachment difficulties
- Environmental limitations: temperature, corrosives, fungi, sand and dust, salt spray
Analyzing non-sinusoidal/complex/random signals
- Frequency domain - introduction to spectrum analysis
- Time domain - introduction to probability density
Calibrating sensors and systems; traceability to NIST
Data acquisition systems
Virtual instrumentation
Movies; videotapes
Infra-red measurements
Course summary
Optional final examination
Award of certificates
