Basic Principles

There are many wave patterns when ultrasonic wave propagates in medium, and the most commonly used ones are P-wave, S-wave, surface wave and plate wave. The defects such as inclusions, cracks, tubes, white spots and delamination in metal ingot, billet, medium and thick plate, large forgings and simple parts can be detected by P-wave. Transverse wave can be used to detect the circumferential and axial cracks, scratches, pores in the weld, slag inclusion, cracks, underpenetration and other defects in the pipe. Surface waves can be used to detect surface defects on castings with simple shapes. Defects in thin plates can be detected by plate waves.

Key Features

Superprobe is a kind of portable industrial nondestructive testing instrument, which can detect, locate, evaluate and diagnose various defects (cracks, inclusions, folds, pores, trachoma, etc.) in the workpiece quickly and conveniently, without damage and accurately.

It can be used either in the laboratory or in the engineering field. The instrument can be widely used in the manufacturing industry, iron and steel metallurgy industry, metal processing industry, chemical industry and other areas requiring defect detection and quality control, but also widely used in aerospace, railway traffic, boiler pressure vessels and other fields of in-service safety inspection and life assessment. It is a must in the nondestructive testing industry.

(1) When ultrasonic is propagated in the medium, it has the characteristic of reflection on the interface of different quality. If the defect is encountered, the size of the defect is equal to or greater than the ultrasonic wavelength, the ultrasonic wave is reflected back on the defect, and the flaw detector can display the reflected wave; If the size of the defect is even smaller than the wavelength, the sound wave will bypass the defect and cannot be reflected.

(2) The directivity of wave sound is good. The higher the frequency is, the better the directivity is. It radiates to the medium in a very narrow beam and is easy to determine the location of defects.

(3) The propagation energy of ultrasonic wave is large. For example, the propagation energy of ultrasonic wave with a frequency of 1MHZ (1 megahertz) is equivalent to one million times that of sound wave with the same amplitude and a frequency of 1000HZ (Hertz).