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Ultrasonic Inspection (UI) (Physics of Ultrasound (Modes of Sound Wave…
Ultrasonic Inspection (UI)
Basic Principles
It uses:
high frequency sound energy
for flaw detection or evaluation
It very useful and versatile NDT method
Consists of pulser/receiver, transducer and display devices
Advantages & Limitations
Calbration Methods
Types of Calibration
Velocity
Zero
Reference
Physics of Ultrasound
Wave Propagation
4 Principles modes:
Longitudinal waves
Shear waves
Surface waves
Plate Waves (in thin material)
Modes of Sound Wave Propagation
Symmetrical
Asymmetrical
Properties of Acoustic Waves
Wavelength and Defect Detection
2 technique's to locate flaws:
sensitivity
resolution
Sound Propagation in Elastic Materials
Attenuation of Sound Waves
combination effect of scattering and absorption
Acoustic Impedance
Refraction and Snell's Law
Measurement Techniques
Normal Beam Inspection
Angle Beam Inspection
Inspection of Welded Joints
Crack Tip Diffraction
Applications
Rail Inspection
Weldments (Welded Joints)
Equipment & Transducers
Piezoelectric Transducers
Transducer Beam Spread
Transducer Types
Immersion Transducer
Paint Brush Transducer
Contact Transducers
Dual Element Transducers
Delay Line Transducers
Angle Beam Transducers
Normal Incidence Shear Wave
Transducer Testing
Frequency Response
Relative Pulse-Echo Sensitivty
Time Response
Complex Electrical Impedance
Sound Field Measurements
Couplant
Pulser/Receiver
Data Presentation
A-Scan
B-Scan
C-Scan
