NDTnet 1998 Aug, Vol.3 No.8

Abstract

There is an increasing need for drilling of film cooling holes in gasturbine components. Holes may be drilled by EDIVI, ECD or Laser.

Radiographic examination of the drilled components is part of the inspection procedure. Traditional X-Ray film technique has been used.

In 1994 a Real Time X-Ray system was introduced. The main reason for replacement of X-ray film equipment was the cost of film and space needed to store film for quality evaluation afterwards. Data has to be archived during 10 to 20 years.

Based on tests performed by potential suppliers, a system was defined which should meet the resolution criteria and is easy to use in the production environment.

The system consists of:

• 2 X-Ray tubes (160 kV and 320 kV)
  
• a 4-axis CNC manipulator
  
• computer for data collection, inspection and archiving
  

After installation of the Real Time X-Ray system, it turned out that X-Ray inspection is also frequently used to solve quality problems during production process development. Since the inspection of standard production is computer controlled the quality assurance is improved.

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:
7th ECNDT, Park Alle 345, DK-2605 Broendby, Denmark, Fax: +45 46 26 70 11, Email: 101373.3414@compuserve.com