Vibration Measurement (116)
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Chapter Outline
Chapter 9 - Vibration Measurement (Fundamentals of Vibration for Test Applications)
- Characteristics of an Ideal Transducer
- Velocity Sensing
- Measuring Displacement
- Optical Wedge—Estimating Displacement due to Vibration
- Displacement Sensor
- Strain Measurement
- Problems with Strain Gages
- Wheatstone Bridge
- Four Sensing Resistors in a Wheatstone Bridge
- Strain Gage Compensation
- Silicon Semiconductor Transducers
- Compound Two-stage Transducer
- Variable Capacitance Sensors
- Measuring Vibration Displacement or Velocity
- Velocity Sensors (Pickups)
- Accelerometers
- Wire Strain Gage Accelerometer
- Piezoresistive (PR) Accelerometers
- Piezoelectric Transduction
- Glue Mounting Method
- Mounting Variations
- Cable Noise
- Signal Conditioning Approaches
- Voltage Measurement: Charge Mode Sensors
- “Charge” Amplifiers
- T-Insert Calibration
- Internal Electronic Systems
- Calibration
- Selecting a Measurement System
Video Outline
Vibration Measurement, Part 1
Characteristics of an Ideal Transducer • Velocity Sensing • Optical Wedge—Estimating Displacement due to Vibration • Displacement Sensor • Strain Measurement • Problems with Strain Gages • Wheatstone Bridge • Four Sensing Resistors in a Wheatstone Bridge • Strain Gage Compensation • Silicon Semiconductor Transducers • Compound Two-stage Transducer • Variable Capacitance Sensors • Measuring Vibration Displacement or Velocity • Velocity Sensors (Pickups) • Accelerometers • Wire Strain Gage Accelerometer • Piezoresistive (PR) Accelerometers • Piezoelectric Transduction • Glue Mounting Method • Mounting Variations • Cable Noise • Signal Conditioning Approaches • Voltage Measurement: Charge Mode Sensors • “Charge” Amplifiers • T-Insert Calibration • Internal Electronic Systems • Calibration • Selecting a Measurement System
Vibration Measurement, Part 2
Characteristics of an Ideal Transducer • Velocity Sensing • Optical Wedge—Estimating Displacement due
to Vibration • Displacement Sensor • Strain Measurement • Problems with Strain Gages • Wheatstone
Bridge • Four Sensing Resistors in a Wheatstone Bridge • Strain Gage Compensation • Silicon
Semiconductor Transducers • Compound Two-stage Transducer • Variable Capacitance Sensors •
Measuring Vibration Displacement or Velocity • Velocity Sensors (Pickups) • Accelerometers • Wire
Strain Gage Accelerometer • Piezoresistive (PR) Accelerometers • Piezoelectric Transduction • Glue
Mounting Method • Mounting Variations • Cable Noise • Signal Conditioning Approaches • Voltage
Measurement: Charge Mode Sensors • “Charge” Amplifiers • T-Insert Calibration • Internal Electronic
Systems • Calibration • Selecting a Measurement System