Photoacoustic microscopy of ceramic engine hardware

Journal Article · Mon Dec 01 00:00:00 EST 1980 · J. Nondestr. Eval.; (United States)

DOI:https://doi.org/10.1007/BF00571809· OSTI ID:5587397

Inglehart, L J ^[1]; Thomas, R L

---

1. Wayne State University, Detroit, MI

Experiments have been conducted to investigate the suitability of scanning photoacoustic microscopy for nondestructive evaluation of reaction-bonded silicon-nitride turbine hardware. Results for complex-shaped turbine stator vanes indicate that surface-crack detection of the order of tens of microns is possible. The technique shows potential as a variable-depth probe for subsurface defects as well as a high-resolution surface-defect probe.

• OSTI ID: 5587397
• Journal Information: J. Nondestr. Eval.; (United States), Vol. 1
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
GAS TURBINE ENGINES
ACOUSTIC TESTING
SILICON NITRIDES
TURBINE BLADES
CRACKS
FEASIBILITY STUDIES
HOT PRESSING
MICROSCOPES
NONDESTRUCTIVE TESTING
STATORS
SURFACES
VANES
ENGINES
FABRICATION
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MATERIALS TESTING
MATERIALS WORKING
NITRIDES
NITROGEN COMPOUNDS
PNICTIDES
PRESSING
SILICON COMPOUNDS
TESTING
420500* - Engineering- Materials Testing