Date of download: 10/22/2017 Copyright © ASME. All rights reserved. From: Density Change of an Oxidized Nuclear Graphite by Acoustic Microscopy and Image Processing J. Eng. Gas Turbines Power. 2009;131(5):052904-052904-4. doi:10.1115/1.3098415 Figure Legend: Schematics of specimen preparation for AM and BM

Date of download: 10/22/2017 Copyright © ASME. All rights reserved. From: Density Change of an Oxidized Nuclear Graphite by Acoustic Microscopy and Image Processing J. Eng. Gas Turbines Power. 2009;131(5):052904-052904-4. doi:10.1115/1.3098415 Figure Legend: Schematic of scanning acoustic microscopy. Acoustic waves generated by the transducer pass through the sapphire rod. The curvature at the end of the rod focuses the plane waves to a point on or below the sample surface. Blue ray is incident at Rayleigh angle (θR) on the sample. These rays generate Rayleigh waves, which travel along the blue line to the transducer. The axial ray (green) is a normally reflected ray. These two rays together contribute to the impedance information. The AM microstructural image is produced from the interference patterns between normally reflected longitudinal waves and the Rayleigh waves .

Date of download: 10/22/2017 Copyright © ASME. All rights reserved. From: Density Change of an Oxidized Nuclear Graphite by Acoustic Microscopy and Image Processing J. Eng. Gas Turbines Power. 2009;131(5):052904-052904-4. doi:10.1115/1.3098415 Figure Legend: Schematics of the acoustic microscopy plan on the AM specimen cross section for density estimation

Date of download: 10/22/2017 Copyright © ASME. All rights reserved. From: Density Change of an Oxidized Nuclear Graphite by Acoustic Microscopy and Image Processing J. Eng. Gas Turbines Power. 2009;131(5):052904-052904-4. doi:10.1115/1.3098415 Figure Legend: Density gradient determined by BM and AM machining methods in the 10% burn-off NBG-10 nuclear graphite in air at 973 K

Date of download: 10/22/2017 Copyright © ASME. All rights reserved. From: Density Change of an Oxidized Nuclear Graphite by Acoustic Microscopy and Image Processing J. Eng. Gas Turbines Power. 2009;131(5):052904-052904-4. doi:10.1115/1.3098415 Figure Legend: (a) Acoustic microscope images obtained at 180 deg surface (W0) and (b) at the center of specimen in Fig. . Differences in the intensity are observed. It is seen that (b) of the center is brighter (higher intensity) than (a) of the surface.

Date of download: 10/22/2017 Copyright © ASME. All rights reserved. From: Density Change of an Oxidized Nuclear Graphite by Acoustic Microscopy and Image Processing J. Eng. Gas Turbines Power. 2009;131(5):052904-052904-4. doi:10.1115/1.3098415 Figure Legend: Reproduced Fig. with a large standard deviation for AM data