Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2005-06-20
2008-09-30
Williams, Hezron E. (Department: 2856)
Measuring and testing
Vibration
By mechanical waves
C073S625000, C073S628000, C073S602000
Reexamination Certificate
active
07428842
ABSTRACT:
A phased array ultrasonic testing system is for examining turbine disc bores and blade attachments for discontinuities, such as stress corrosion cracking. The system is particularly suited to perform an accurate and efficient inspection of components despite their having a relatively complex geometry, such as axial entry blade attachments and bores of associated discs. The system includes a control system with a computer and a controller for programming, emitting, and steering an ultrasonic beam via at least one two-dimensional phased array probe, thereby precisely inspecting the area of interest while simultaneously accommodating the aforementioned complex geometry of the disc or blade attachment. Computer control of the beam permits the number of inspection locations and the number of different probe wedges to be reduced providing for an efficient, timely inspection. Methods of profiling and examining turbine components of known and unknown geometries, are also disclosed.
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Abbasi Waheed A.
Fair Michael
Matulewicz Walter
Metala Michael J.
Miller Rose M
Siemens Power Generation, Inc.
Williams Hezron E.
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