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Angle
Beam Ultrasonic Testing |
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Course
Outline |
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Module
1. Angle Beam Ultrasonic Testing Principle |
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1.1
Ultrasonic Wave Propagation |
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1.1.1
General |
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1.1.2
Near Field |
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1.1.3
Far Field |
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1.2
Refraction and Mode Conversion |
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1.2.1
General |
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1.2.2
Snell's Law |
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1.2.3
Critical Angle of Refraction |
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1.3
Acoustical Impedance |
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1.3.1
General |
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1.3.2
Acoustical Impedance |
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1.3.3
Transmission Coefficient |
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Module
2. Ultrasonic Testing Equipment |
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2.1
Ultrasonic Flaw Detector |
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2.2
Transducer |
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2.3
Couplant |
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2.4
Calibration Block |
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Module
3. Angle Beam Ultrasonic Testing Procedure |
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3.1
Measurement of Base Material Thickness |
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3.2
Selection of Frequency |
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3.2.1
Selection of Frequency |
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3.2.2
Selection of Transducer Dimension |
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3.2.3
Selection of Angle of Refraction |
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3.3
Selection of Test Surface and Method of Flaw Detection |
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3.4
Measurement of Probe Index and Angle of Refraction |
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3.4.1
Measurement of Probe Index |
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3.4.2
Measurement of Angle of Refraction |
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3.5
Setting of Measuring Range |
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3.6
Establishment of Curves for Dividing Echo Heights and Regional Division |
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3.6.1
Preparation of the Distance-amplitude Characteristic (DAC) Curve |
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3.6.2
Establishment of Curves for Dividing Echo Heights and Regional Division |
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3.7
Setting of Working Sensitivity |
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3.8
Preparation of Test Objects |
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3.8.1
Preparation of Test Surface |
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3.8.2
Line Scribing on Test Surface |
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3.9
Preliminary Flaw Detection |
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3.9.1
Adjustment of Sensitivity |
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3.9.2
Scanning |
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3.9.3
Flaw Detection |
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3.9.4
Confirmation of Flaws |
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3.10
Specified Flaw Detection Test |
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3.11
Classification of Flaws |
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