Ultrasonic C-Scan Testing of Mk 38 Missile Warhead Weldments

摘要

The nondestructive determination of weld fusion for Mk 38 Sparrow missile warhead casing weldments is discussed. The use of an ultrasonic C-scan technique is described, and the results are compared with destructive testing. Limitations imposed by geometric and dimensional tolerance considerations are also presented. The C-scan technique provides an accurate mapping of lack of fusion within the forward weld root and the aft weld sidewalls. The task is part of a larger effort to correlate weld geometry with weld strength to determine minimum weld requirements. (Author)