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Ultrasonic detection of contact point corrosion / Saat Osman and Hamirun Osman

Contact point corrosion is a type of corrosion caused by the contact of two or more metals or structures with different chemical potential. It always occurs in the pipelines for transferring oil and gas especially on the pipe support. The corrosion can be detected by ultrasonic testing. In this proj...

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書誌詳細
主要な著者: Osman, Saat, Osman, Hamirun
フォーマット: Student Project
言語:English
出版事項: 2002
主題:
Elastic waves
Surface effects and tests
オンライン･アクセス:https://ir.uitm.edu.my/id/eprint/73141/1/73141.pdf
https://ir.uitm.edu.my/id/eprint/73141/
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spelling my.uitm.ir.731412023-03-27T08:38:34Z https://ir.uitm.edu.my/id/eprint/73141/ Ultrasonic detection of contact point corrosion / Saat Osman and Hamirun Osman Osman, Saat Osman, Hamirun Elastic waves Surface effects and tests Contact point corrosion is a type of corrosion caused by the contact of two or more metals or structures with different chemical potential. It always occurs in the pipelines for transferring oil and gas especially on the pipe support. The corrosion can be detected by ultrasonic testing. In this project, the method used to detect the contact point corrosion was Long Range Ultrasonic Shell Transmission (LRUT). Objectives of this project were to find the relation of transmissions and wall losses due to the contact point corrosion, to measure the effect of wall losses on the pipe's surface and to make a research on a new technique that is save time and cost in detecting the contact point corrosion. Later the new technique will be proposed to industry. In LRUT, two probes with frequency of 200 KHz were used and separated at constant distances of 200mm and 300mm. The probes were glued on the probe shoes that were made from Perspex. Angles of probes were made depend on the refraction angles of 33.10°, 45°, 60°, 70° and 90°on the probe shoes. The curvature of the probe shoes at the contact side should follow the pipe's curvature. On the pipe's surface, artificial defects of 10%, 20%, 30%, 40%, 50%, 60% and 70% depths were made from the pipe's thickness. The transmit times of the ultrasonic waves were recorded and the transmission coefficients can be found by using the relation of ultrasonic transmission. The results shown that the transmissions will reduce at higher wall losses. 2002 Student Project NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/73141/1/73141.pdf Ultrasonic detection of contact point corrosion / Saat Osman and Hamirun Osman. (2002) [Student Project] (Unpublished)
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Elastic waves
Surface effects and tests
spellingShingle Elastic waves
Surface effects and tests
Osman, Saat
Osman, Hamirun
Ultrasonic detection of contact point corrosion / Saat Osman and Hamirun Osman
description Contact point corrosion is a type of corrosion caused by the contact of two or more metals or structures with different chemical potential. It always occurs in the pipelines for transferring oil and gas especially on the pipe support. The corrosion can be detected by ultrasonic testing. In this project, the method used to detect the contact point corrosion was Long Range Ultrasonic Shell Transmission (LRUT). Objectives of this project were to find the relation of transmissions and wall losses due to the contact point corrosion, to measure the effect of wall losses on the pipe's surface and to make a research on a new technique that is save time and cost in detecting the contact point corrosion. Later the new technique will be proposed to industry. In LRUT, two probes with frequency of 200 KHz were used and separated at constant distances of 200mm and 300mm. The probes were glued on the probe shoes that were made from Perspex. Angles of probes were made depend on the refraction angles of 33.10°, 45°, 60°, 70° and 90°on the probe shoes. The curvature of the probe shoes at the contact side should follow the pipe's curvature. On the pipe's surface, artificial defects of 10%, 20%, 30%, 40%, 50%, 60% and 70% depths were made from the pipe's thickness. The transmit times of the ultrasonic waves were recorded and the transmission coefficients can be found by using the relation of ultrasonic transmission. The results shown that the transmissions will reduce at higher wall losses.
format Student Project
author Osman, Saat
Osman, Hamirun
author_facet Osman, Saat
Osman, Hamirun
author_sort Osman, Saat
title Ultrasonic detection of contact point corrosion / Saat Osman and Hamirun Osman
title_short Ultrasonic detection of contact point corrosion / Saat Osman and Hamirun Osman
title_full Ultrasonic detection of contact point corrosion / Saat Osman and Hamirun Osman
title_fullStr Ultrasonic detection of contact point corrosion / Saat Osman and Hamirun Osman
title_full_unstemmed Ultrasonic detection of contact point corrosion / Saat Osman and Hamirun Osman
title_sort ultrasonic detection of contact point corrosion / saat osman and hamirun osman
publishDate 2002
url https://ir.uitm.edu.my/id/eprint/73141/1/73141.pdf
https://ir.uitm.edu.my/id/eprint/73141/
_version_ 1761622472408432640
score 13.251813

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