Location：Home > APPLICATION
CTS-PA322T real-time 3D fully focused bolt dedicated detector
Release time：2023-09-26
Many defects in heat treated products cannot be observed with the naked eye, so we need to use ultrasonic testing as a detection method, which is also necessary for us heat treaters to learn this article.
Flaw detection refers to the detection of cracks or defects inside metal materials or components. Generally, magnetic, radiographic, ultrasonic and other instruments and devices are used.
The commonly used inspection methods include X-ray inspection, ultrasonic inspection, magnetic particle inspection, penetration inspection, eddy current inspection γ Radiographic testing and other methods.
1、 Fundamentals of Acoustics
1. Longitudinal wave
2.transverse wave
3.surface wave
4.surface wave
5.Vertical incidence interface
6.Oblique incidence interface
二、Generation and reception of ultrasound
三、Straight probe structure
四、超声场
五、Contact method inspection
六、Straight probe with delay block
七、Double crystal probe
八、斜探头
九、Principles of Flaw Detection
1. Penetration method
1. Penetration method
2.Reflection method
Reflection of different defects
3.Tandem inspection
十、Principles of Flaw Detection
Digital flaw detector
Display method
A-scan image
B-scan image
C-scan image
11、 Flaw detection method
1. Irregular cracks
1. Irregular cracks
2. Selection of incident direction
3. Dynamic waveform
4.检测频率的影响
5. Baseline adjustment
6. AVG curve
7. DAC curve
8. Defect size
12、 Factors affecting wave height
1. Scattering
1. Scattering
2. Absorption
3. Repeated echoes
4. Variant wave
5. Additional wave
13、 Flaw detection application
1. Thickness measurement
1. Thickness measurement
2. Weld inspection
Longitudinal defect detection of welds
Probe movement range
Transverse defect detection of welds
