NDTnet 1998 Aug, Vol.3 No.8

Abstract

A new X-ray TV introscope of higher sensitivity for nondestructive express-control of material quality and welded joints has been developed. It allows to detect internal defects such as pores cavities, poor penetration foreign inclusions with high resolution. Introscope sensitivity exceeds that of film radiography, and testing efficiency is increased by more than 10 times.

Fig. 1

The inroscope (Fig. 1) consists of:

1 - X-radiation source,
2 - object,
3 - automatic positioning device,
4 - X-ray TV unit,
5 - specialized computer.


X-ray image of a tested object is converted into a complete video-signal and the mostinformative TV-frame is recorded by computer. Visual inspection, analysis and processing ofimages are performed with the use of a specially developed program directly on a file and, if necessary, on a paper or magnet carrier. Computer is used to control operation of every introscope unit and to form a data base of tested object video-images. As converters both series and experimental X-ray vidicons with Be input window can be used [1].

TECHNICAL CHARACTERISTICS:

energy range, KeV	7-250
thickness range), mm for steel for Al for Be (polyethylene)	up to 40 up to 80 up to 150
testing sensitivity, %	0,5-2,0
resolution, line pairs per mm	20 and 8
testing field diameter, mm	18 and 90
consumed power, KVA	up to 1,0

The X-ray TV introscope can find wide application in engineering, atomic, chemical, heat power, oil and gas industries.

Example of Reference:
1. Svirjakin D.I., Fifishov N.Ja., Zabavin AW, Ivanov A.A., Saveliev Ju.B. The method of X- vidicon fabrication. Russian patent No. 2034354, 12.08.91.

Abstract Source:
Book of Abstracts, 7th European Conference on Non-Destructive Testing, 26-29 May 1998, ISBN: 87-986898-0-00

Full-Text Source:
Proceedings of the 7th European Conference on Non-Destructive Testing, 26-29 May 1998, ISBN:

Publication Contact:
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