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

Ultrasonic study for flaw detectability in ferritic butt welds at high temperatures

Buy Article:

$22.00 + tax (Refund Policy)

This paper describes the problems encountered during ultrasonic testing of welds at high temperatures, the overall assessment of sound propagation at high temperatures and an innovative technique to circumvent the problems using the conventional probes. In the absence of high-temperature transducers an attempt has been made by the authors to examine welds in the high temperature zone up to 300°C by using contact angle beam probes (less than 4 MHz) and scanning from the region (beyond 5th Vee path) at room temperature. The experimental study involved the creation of natural defects such as cracks, incomplete penetration, porosity etc., in the ferritic butt weld (16 mm thickness) at predetermined locations. The comparative study was carried out between the responses obtained from the defects at ambient temperature and elevated temperatures. The analysis of the results have shown that the attenuation of ultrasound increases as the temperature at the weld zone increases. It can be seen from the results of the experiments that by making attenuation corrections it is possible to inspect the welds below 300°C without substantial performance loss at test frequencies less than 4 MHz.
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

Affiliations: 1: Department of Physics, Regional Engineering College, Tiruchirappalli-15, India 2: NDTL, Bharat Heavy Electricals Limited, Tiruchirappalli, Tamil Nadu, India

Publication date: January 1, 2003

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