When we use ultrasonic thickness gauges to measure the thickness of materials, we often encounter pipes with small diameters. Materials include metals, glass, plastics, etc., as well as samples with curvature, such as rounded corners, which are typically represented by stamped parts. Of the global steel material, 60-70% is plate, most of which is stamped finished product. Automobile bodies, chassis, fuel tanks, radiators, boiler drums, container housings, electric motors, and silicon steel sheets for electric cores are all stamped and finished.
Test Cases
With the YUSHI PM5 Gen2 Ultrasonic Thickness Gauge, the A-scan waveform is adjusted in real time to provide the measurement information needed to ensure that the correct bottom echo is selected. To make measurements even easier and faster, functions such as high-speed measurement, auto freeze, or directional capture can also be used to make measurements fast and stable.
YUSHI offers a wide range of ultrasonic thickness measurement probes of various types and sizes. Selecting the right probe is a crucial first step in the measurement process. Many factors need to be considered to properly select a probe, including the thickness, material, and geometry of the part being measured.
Probe & Accessory Selection
Due to the typical shape and small thickness of stamped parts, we usually use a small diameter delay line probe to accomplish the measurement. In general, the probe should be selected based on the specific part shape. The most common contacts we recommend are Φ2, Φ3 and Φ6 probes. However, for typical small diameter pipes or rounded surfaces with small R-angles, in order to effectively couple the acoustic energy to the small diameter part being measured, we must focus the acoustic beam to a very small point.
The measuring surface of the workpiece is too small because of the curved surface. and the pointed and narrow end of the delay head makes it difficult for the probe to remain perpendicular to the measuring surface, which results in reduced signal amplitude or even complete loss of signal, which is very inconvenient during the measurement process, and the user needs to keep moving the probe to find the optimal measuring angle. The probe holder is spring loaded and has a V-shaped notch at the front end to keep the probe in a stable vertical position during the inspection.
Ultrasonic thickness gauges can be used to measure all common metal, glass, plastic and ceramic products, including bottles, containers, pipes, plates and more. For workpieces with small diameters and edges, if you have the same measurement application or encounter any problems, please feel free to contact us and we will provide you with the best solution.