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Chapter 1 Introduction
1.1 Main content of testing technology
1.2 The role of testing technology in mechanical engineering
1.2.1 The role in mechanical vibration and structural design
1.2.2 The role in automated production
1.2.3 The role in product quality and automatic control
1.2.4 The role in mechanical monitoring and fault diagnosis
1.3 The component of test system
1.4 The development of testing technology
1.4.1 Sensors are developing towards novel, miniaturized and intelligent
1.4.2 Testing instruments are developing towards high precision and multi-function
1.4.3 The test and signal processing are developing towards automation
1.5 Learning objectives for this course
Questions
Chapter 2 Working Principle of Common Sensors
2.1 Classification of sensors
2.2 Sensors based on energy control
2.2.1 Resistive sensor
2.2.2 Inductive sensor
2.2.3 Capacitive sensor
2.3 Sensors based on energy conversion
2.3.1 Piezoelectric sensor
2.3.2 Magneto-electric sensor
2.3.3 Photoelectric sensor
2.4 Select the appropriate sensor
Questions
Chapter 3 Basic Characteristics of Test System
3.1 Linear system and its basic properties
3.2 Static characteristics of test system
3.2.1 Sensitivity
3.2.2 Nonlinearity
3.2.3 Return error
3.3 Dynamic characteristics of test system
3.3.1 Theoretical basis of dynamic characteristics
3.3.2 Dynamic analysis of first-order and second-order systems
3.3.3 Test conditions for non-distortion testing
Questions
Chapter 4 Signal Description Method
4.1 Signal classification
4.1.1 Deterministic signal and random signal
4.1.2 Continuous signal and discrete signal
4.1.3 Energy signal and power signal
4.2 Time domain description of the signal
4.2.1 Time domain signal synthesis and decomposition
4.2.2 Statistical characteristic parameters of the signal
4.2.3 Application of statistical characteristic parameters
4.3 Frequency-domain description of the signal
4.3.1 Description of periodic signal
4.3.2 Description of aperiodic signal
4.3.3 Frequency spectrum of typical signal
4.4 Description of random signal
4.4.1 Probability density function
4.4.2 Probability density function of typical signal
Questions
Chapter 5 Signal Conditioning Method
5.1 Bridge circuit
5.1.1 Direct current bridge circuit
5.1.2 Alternating current bridge
5.2 Signal filtering
5.2.1 Ideal analog filter
5.2.2 Actual analog filter and its basic parameters
5.3 Signal modulation and demodulation
5.3.1 Amplitude modulation
5.3.2 Frequency modulation
Questions
Chapter 6 Signal Analysis and Processing
6.1 Signal processing method in time domain
6.1.1 Statistical parameters in time-domain
6.1.2 Correlation analysis
6.2 Signal processing method in frequency domain
6.2.1 Self power spectral density function
6.2.2 Cross-spectral density function
6.2.3 Coherence function
6.3 Digital signal processing
6.3.1 Signal sampling and sampling theorems
6.3.2 Signal quantization and quantization error
6.3.3 Signal truncation, signal energy leakage and window functions
Questions
Chapter 7 The Application of Mechanical Testing Technology
7.1 Stress-strain test and its application
7.1.1 Stress-strain test
7.1.2 Stress monitoring of large structures
7.2 Mechanical vibration test and its application
7.2.1 Vibration type and its characterization parameter
7.2.2 Forced vibration of freedom system with single degree
7.2.3 Select the appropriate vibration sensor
7.2.4 Vibration test system
7.2.5 Vibration test in mechanical condition monitoring and diagnosis
7.3 Mechanical displacement test and its application
7.3.1 Common displacement sensor
7.3