Preprint Open Access

Direct measurements of Rayleigh wave acoustoelastic constants for shot-peened superalloys

Sergey Gartsev; Bernd Köhler

In this article, the experimental investigation of the dependency of surface wave (Rayleigh wave) acoustoelastic constants (AEC) on surface treatment parameters and plastic deformation is discussed. These constants are necessary for the monitoring of surface treatment intensity by means of ultrasonic testing. The indirect (mapping of bulk wave AEC to the surface wave AEC through the Grüneisen constants) method and the direct method are compared. Also the Rayleigh wave AEC have been directly measured for the different states of material (annealed, plastically deformed, or surface treated) for In718 and Ti6246 alloys. We show that surface AEC are very sensitive to any changes in material structure, up to changes in the sign of the effect, and for practical applications, the direct in-situ Rayleigh wave AEC measurement should be performed.

Files (583.5 kB)
Name Size
Manuscript_v1.pdf
md5:4f54e81d747db0114b1688be697f451f
583.5 kB Download
45
87
views
downloads
All versions This version
Views 4545
Downloads 8787
Data volume 50.8 MB50.8 MB
Unique views 4141
Unique downloads 8383

Share

Cite as