Progress of a Cross-Correlation Based Optical Strain Measurement Technique for Detecting Radial Growth on a Rotating DiskThe modern turbine engine operates in a harsh environment at high speeds and is repeatedly exposed to combined high mechanical and thermal loads. The cumulative effects of these external forces lead to high stresses and strains on the engine components, such as the rotating turbine disks, which may eventually lead to a catastrophic failure if left undetected. The operating environment makes it difficult to use conventional strain gauges, therefore, non-contact strain measurement techniques is of interest to NASA and the turbine engine community. This presentation describes one such approach; the use of cross correlation analysis to measure strain experienced by the engine turbine disk with the goal of assessing potential faults and damage.
Document ID
20150019660
Acquisition Source
Glenn Research Center
Document Type
Presentation
Authors
Clem, Michelle M. (NASA Glenn Research Center Cleveland, OH United States)
Abdul-Aziz, Ali (Cleveland State Univ. Cleveland, OH, United States)
Woike, Mark R. (NASA Glenn Research Center Cleveland, OH United States)
Fralick, Gustave C. (NASA Glenn Research Center Cleveland, OH United States)