In this paper,the effect for thickness of shell on measuring of charge density was studied in nondestructive testing and the relation of thickness of shell with scanning value was found.

The actual thickness calculation methods of the asphalt adding paving course are analyzed.

Weir Plate Thickness Calculation for Horizontal Vessels;

After having studied the new standard GB150-1998, the author stated and analyzed, in this paper, the main differences on the provisions of calculation pressure, design pressure,calculated thickness, practical shell thickness, pressure test and leakage test from the same provisions in GB150 - 89.

When the pressure vessel is designed without checking hole, the calculated thickness of the pressure vessel written on the drawing, sometimes, is not the same illustrated in GB150-89.

For the characteristics of the test motors multi-shell thickness,this paper seeks to find a more generic motors interface bonding and its signal processing technology to ultrasonic testing as a means, it does not affect from the shell thickness, and to provide a effective and feasible method to automatically detect ultrasound technology in the interfacial adhesion test motors engine testing.

This paper presents experimental detection programmers,in accordance with multi-shell thickness component automated testing requirements.