Community Research and Development Information Service - CORDIS

Abstract

Failure of structures is often due to propagation of service induced defects, or to fabrication defects which result in service induced defects. Failure prevention and product reliability of long life structures are thus often dependent on or correlated with the effectiveness of inspection of these structures, conducted as fabrication controls or in-service inspections. Fabrication controls often rely on radiographic techniques, but a high standard of effectiveness would rely on a combination of NDT techniques such as X-ray examination, ultrasonic testing, dye penetrant testing and eddy current testing when applicable. In-service inspection of these long life structures more often relies on ultrasonic testing, due to the transportability and adoptive character of the technique. Heat exchangers are generally controlled using eddy current techniques. Neither the effectiveness nor the reliability of the procedures for the application of NDT techniques has been correctly evaluated in many cases of industrial applications. There is often a large discrepancy between the capability of a technique (or combination of techniques) and the effective performance of the same procedure applied by human beings. The present paper reports on the effectiveness of NDT techniques as applied for industrial controls.

Additional information

Authors: CRUTZEN S, JRC Ispra (IT);JEHENSON P, JRC Ispra (IT);HERKENRATH H, JRC Ispra (IT)
Bibliographic Reference: Paper presented: International Conference on "Structural Failure, Product Liability and Technical Insurance", Wien (AT), July 10-12, 1989
Availability: Available from (1) as Paper EN 34925 ORA
Record Number: 199010015 / Last updated on: 1994-12-01
Category: PUBLICATION
Original language: en
Available languages: en