Accession Number : AD0777014

Title :   Investigation of Techniques to Nondestructively Test Reinforced Plastic Composite Pipe.

Descriptive Note : Final rept. Sep 73-31 Mar 74,


Personal Author(s) : Golis,M. J. ; Meister,R. P. ; Crowe,J. L. ; Posakony,G. J.

Report Date : 31 MAR 1974

Pagination or Media Count : 93

Abstract : An in-depth study of ten nondestructive testing techniques has shown that ultrasonic methods are most suitable for in-specting reinforced plastic composite (RPC) pipe. Both liquid-coupled and air-coupled ultrasonic systems have been shown to be capable of detecting delaminations, inclusions, and uncured regions in 14 specially prepared sections of 3-inch- diameter fiberglass pipe. Plan view C-scans were recorded using both techniques. The liquid-coupled system showed higher resolu- tion and sensitivity to small-area reflections. Recommended inspection system specifications are listed based upon the per-formance of laboratory equipment used in the program. (Author-PL)

Descriptors :   *Pipes, *Nondestructive testing, *Ultrasonic tests, Composite materials, Reinforced plastics, Fiberglass, Defects(Materials), Detection

Subject Categories : Ceramics, Refractories and Glass
      Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE