Ultrasonic Flaw Detector and Ultrasonic Thickness Gauge Working Principle
First of all, ultrasonic flaw detector is ultrasonic propagation in the detected material, the acoustic properties of the material and the internal organisation of the changes in the propagation of ultrasound to produce a certain effect on the propagation of ultrasound, through the ultrasonic affected by the degree of detection of the condition of the material properties and structural changes in the technology known as ultrasonic testing. Ultrasonic flaw detector is an instrument specially set up for industrial non-destructive flaw detection, which can quickly, easily, non-destructively and accurately detect, locate, evaluate and diagnose a wide range of defects (cracks, looseness, porosity, inclusions, etc.) inside the workpiece. It can be used both in the laboratory and on the engineering site. Although you can use ultrasonic flaw detector for thickness measurement, the software interface is all for flaw determination.
Ultrasonic thickness gauge is based on the principle of ultrasonic pulse reflection for thickness measurement, when the probe emitted ultrasonic pulses through the object under test to reach the material sub-interface, the pulse is reflected back to the probe through the Jingjing certificate to measure the ultrasonic propagation time in the material to determine the thickness of the material under test. Ultrasonic thickness gauge is the use of the latest high-performance, low-power microprocessor technology, based on the principle of ultrasonic measurement, you can accurately and quickly measure the thickness of metal and a variety of other materials, and can be the speed of sound of the material to be measured; but also on the production equipment of a variety of pipelines and pressure vessels for the measurement of the thickness of the monitoring of the extent of their corrosion and thinning after the use of the process, but also a variety of sheet metal and a variety of Processed parts for accurate measurement.
Factors affecting the ultrasonic flaw detector and ultrasonic thickness gauge measurement results
For ultrasonic flaw detector, the measurement of the workpiece material, ambient temperature, surface roughness, as well as attached substances, magnetic field are factors that affect the accuracy of the measurement data. All ultrasonic flaw detectors detect defects locating is based on the measurement of the ultrasonic echo signal. Whether the speed of sound in the detection object is constant is an important factor affecting the accuracy of the detection results, so to achieve high detection accuracy, the need for relatively constant ultrasonic propagation speed in the detection object.
The accuracy of the ultrasonic thickness gauge measurement results with the environment has little to do with the measurement of the surface roughness of the workpiece, the workpiece curvature radius is too small and other factors.
