Tubing String Thread Sealing Surfaces Damage Evaluation Based on Acoustic Elasticity Theory

During the processing of tubing premium threaded made up, the degree of the thread sealing surface intactness will directly affect the sealing performance of the string. Nevertheless, there are some difficulties to detect the damage of the engaged sealing surface effectively. In the present study th...

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Bibliographic Details
Published inMaterials science forum Vol. 944; pp. 828 - 834
Main Authors Sun, Jian Hua, Yang, Shang Yu, Wang, Jian Jun, Lin, Kai, Feng, Yao Rong
Format Journal Article
LanguageEnglish
Published Pfaffikon Trans Tech Publications Ltd 01.01.2019
Subjects
Acoustic measurement
Acoustics
Contact stresses
Coupling
Damage assessment
Damage detection
Elasticity
Electronics
Repair & maintenance
Sealing
Surface properties
Surface roughness
Wave reflection
Wear
Frequency
Tubing
Acoustic Wave
Sealing Surface
Contact Pressure
Thread
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Summary:During the processing of tubing premium threaded made up, the degree of the thread sealing surface intactness will directly affect the sealing performance of the string. Nevertheless, there are some difficulties to detect the damage of the engaged sealing surface effectively. In the present study the sealing surface damage was judged by the sealing surface contact stress’s relative changes according to the acoustic elasticity theory,. At the same time, the wear defects generated at the tubing sealing surface, during the tubing made up, contrasted with the wear and unworn surface roughness of coupling ultrasonic detected about the sealing surface. The results showed that with the acoustic amplitude evaluated the sealing contact stress was susceptible to the influence of surface roughness of coupling. But the reflection wave with the center frequency on the sealing surface characterization of the contact stress could avoid this problem effectively.
Bibliography:Selected, peer reviewed papers from the Chinese Materials Conference 2018 (CMC 2018), July 12-16, 2018, Xiamen City, Fujian, China
ISSN:0255-5476
1662-9752
1662-9752
DOI:10.4028/www.scientific.net/MSF.944.828