Ultrasonic inspection of polyethylene butt-fussion joints

Journal Article · Fri Jan 01 04:00:00 EST 1982 · Am. Gas Assoc., Oper. Sect., Proc.; (United States)

OSTI ID:6169202

House, L J; Day, R A

Researchers investigated nondestructive pulse-echo, pitch-catch, and spectroscopic ultrasonic methods for determining voids and inclusions, lack of bond, and inadequate fusion in heat-fused polyethylene butt joints in 4-in. gas distribution pipe. The pulse-echo method, using a 2.25-MHz, cylindrically focused transducer, provided the best sensitivity to the joint defects, detecting flaws as small as 0.014 in. in diameter. No correlation was established between the ultrasonic spectroscopy results and the cohesive strength of incompletely fused joints in the 1.2-3.2 MHz frequency range.

• Research Organization: Battelle Columbus Lab., OH
• OSTI ID: 6169202
• Journal Information: Am. Gas Assoc., Oper. Sect., Proc.; (United States), Journal Name: Am. Gas Assoc., Oper. Sect., Proc.; (United States); ISSN POAGA
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
ACOUSTIC TESTING
DEFECTS
ENERGY SYSTEMS
INCLUSIONS
JOINTS
MATERIALS TESTING
NATURAL GAS DISTRIBUTION SYSTEMS
NONDESTRUCTIVE TESTING
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PIPES
POLYETHYLENES
POLYMERS
POLYOLEFINS
TESTING
ULTRASONIC TESTING
VOIDS