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Surface Waves at Ultrasonic Frequencies by E G Cook and H E VanValkenburg
Correlation of Gamma Radiography and Magnaflux Indications in the Inspection of Large Cast
Flash XRay Studies of Fuie Performance by E L Criscuolo and D T OConnor
16 tank 20 tank 39 tank A-in Address all communica Allis-Chalmers aluminum ASTM Headquarters beam search betatron bore castings cent circular seam Correlation crystal defects found defects shown destructive test diameter elastic fects Figure firing pin flash fluoros fluoroscope forging ingots forging procedure fusion defect fuze gamma graph grains H-in ingot J-in juncture lack of fusion lack of penetration lack-of-fusion defect lj-in longitudinal velocity Magnaflux main seam welds material metal methods Naval Ordnance Laboratory non-destructive test NOTE.—DISCUSSION O'Connor obtained operation PAPER IS INVITED Particle Displacement plate segregation plugs were taken Poisson's ratio Race St radio radiographic inspection radiographs reflecto Reflectogram reflectoscope data reflectoscope indications reflectoscope inspection repair scope indication Seam 23B Seam 56TL search unit shaft showing slag inclusion shown in Fig solid sonic test Sperry spheres spot indication steel surface waves technique tions to ASTM trepan plugs tube ultrasonic reflectoscope ultrasonic testing velocity ratios vertical seam