Skip to main content
padlock icon - secure page this page is secure

Ultrasonic inspection of rough surface aluminium die castings

Buy Article:

$22.00 + tax (Refund Policy)

Most ultrasonic techniques developed in the die casting industry were to inspect castings with simple geometries and machined surfaces. A technique could not be described as non-destructive if it required alteration of a surface prior to inspection. This paper describes an investigation into the possibility of using an ultrasonic sensing-based nondestructive testing system to detect defects in aluminium die casting parts with rough surfaces. As the signal-to-noise ratio is very important in quantifying sub-surface defects, the major factors relating to noise creation in the ultrasonic signal during ultrasonic immersion testing were identified and addressed. The application of ultrasonic testing to inspect rough surface aluminium die castings with side-drilled holes to simulate porosity type defects is described in detail. Investigations indicate that the scattering from the rough surface of the castings masks the defect signal when the defect was close to the front surface. The results obtained from ultrasonic immersion testing indicated that focused ultrasonic probes operating at frequencies between 5 MHz and 10 MHz were best suited for the inspection of castings with surface roughness Ra values varying between 50 m and 100 m.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: March 1, 2007

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more