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Ultrasonic Inspections

Advances in ultrasonic testing have led to the widespread application of ultrasonic scans to detect shrinkage, porosity, cracks, and other defects deep within castings. In the simplest type of ultrasonic inspection ultrasonic waves are initiated at the surface by a high frequency transducer, they reflect from defects or from the rear surface of the casting and are picked up by the transducer. A plot of the amplified reflected waves on a CRT shows the presence of defects within the casting. More sophisticated ultrasonic testing techniques involve immersion of the casting in a water bath enhancing the pickup of the ultrasonic waves to provide a two dimensional map of the defects present. These techniques are applied to a wide variety of castings, ingots, and forgings. Ultrasonic testing is covered in ASTM specifications:

  • ASTM E11411
  • ASTM E 214
  • ASTM E 587
  • ASTM E 1001

Source: Investment casting Institute Handbook 1997 Edition

Associations

  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry
  • Stainless Foundry | Steel Castings | Investment Sand Foundry