Special inspection problems

solved by

matched ultrasonic probe design

Roye, W. and Schlengermann, U.

Krautkrämer GmbH & Co., Hürth, Germany

Inspection of turbine blades

Requirements:

- detection of cracks in the root

- reliable

- fast

- “on the wings” crack

The “Whale Probe”

crack

“Whale probe”

Transducer

corner

A-Scans of the whale probe

Crack Echo

Corner Echo

with crack echowithout flaw

The “Whale Probe”