Method and apparatus for the diagnosis of a in use strained component

摘要

Process for diagnosing a component (4) comprises inserting a test bore (11) into the component and analyzing the component for a condition parameter based on the composition of drilling residues (14) removed by the test bore. An independent claim is also included for a device for carrying out the above process. Preferred Features: The condition parameter is the thickness of a material or component layer which characterizes the component. The test bore is 100-500 mu m wide. The test bore is produced using a laser beam, electron beam or by sputtering.