flaw detection
6.In this paper, regarding nondestructive testing of surface defects (for example, grinding-cracks of solid carbide cutting tools etc), we emphatically analyze post emulsification fluorescence penetrant flaw detection method and application in the field of quantity controlling for solid carbide cutting tools, and we put forward procedure process and procedure parameter of fluorescence penetrant flaw detection for cutting tools.
7.Abstract: The attention has focused on quantifying the capability of nondestructive testing (NDT) system for guaranteeing structural safety through damage tolerance analysis.A method of reliability assessment for engine blades NDT is presented,which can determine exactly the probability of flaw detection（POD）and assess the probability of flaws missed（POM）in the engine blades,as well as control the largest size of the flaws missed at inspections with high probability of flaw detection and confidence level.This method also raises the flaw detection probability and prevents the flight accidents caused by the missed flaws in engine blades.
10.Aiming at the on-site welding,installation and maintenance of small tube in boiler heating surface in thermal power plant,the process and the problems needing attention in ultrasonic flaw detection of small tube are described in order to improve the inspection accuracy and to prevent undetection,misjudgment and misdiagnosis.Therefore,it can control the quality of butt-welded seam of small tube effectively.
