Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms
A simple, economic, and accurate nondestructive measurement method has been developed to determine the quality of in-service wooden cross-arms. A wooden cross-arm is part of the pylon normally used to support high-power transmission line. The measurement system uses an ultrasonic pulse, 45kHz, to...
| Main Author: | |
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| Format: | Thesis |
| Language: | English English |
| Published: |
2002
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/9515/ http://psasir.upm.edu.my/id/eprint/9515/1/FSAS_2002_44.pdf |
| _version_ | 1848841166908293120 |
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| author | Lai, Sook Kean |
| author_facet | Lai, Sook Kean |
| author_sort | Lai, Sook Kean |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A simple, economic, and accurate nondestructive measurement method has been
developed to determine the quality of in-service wooden cross-arms. A wooden cross-arm
is part of the pylon normally used to support high-power transmission line. The
measurement system uses an ultrasonic pulse, 45kHz, to propagate from transmitter to
receiver. The transit time of the pulse is the basic parameter. Investigations show that the
transit time is dependent on the distance between two transducers and needs a continuum
medium. Other factors such as density, moisture content, fiber direction, continui1y of
the medium. and sample thickness also influence the propagation of ultrasound An
investigation has been done to find out the optimum condition for detection methods.
The optimum condition was determined through various experimental methods such as
C-Method, Upper Method, Direct Method, Indirect Method, and Semi-Direct Method. |
| first_indexed | 2025-11-15T07:38:55Z |
| format | Thesis |
| id | upm-9515 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:38:55Z |
| publishDate | 2002 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-95152024-03-06T07:30:28Z http://psasir.upm.edu.my/id/eprint/9515/ Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms Lai, Sook Kean A simple, economic, and accurate nondestructive measurement method has been developed to determine the quality of in-service wooden cross-arms. A wooden cross-arm is part of the pylon normally used to support high-power transmission line. The measurement system uses an ultrasonic pulse, 45kHz, to propagate from transmitter to receiver. The transit time of the pulse is the basic parameter. Investigations show that the transit time is dependent on the distance between two transducers and needs a continuum medium. Other factors such as density, moisture content, fiber direction, continui1y of the medium. and sample thickness also influence the propagation of ultrasound An investigation has been done to find out the optimum condition for detection methods. The optimum condition was determined through various experimental methods such as C-Method, Upper Method, Direct Method, Indirect Method, and Semi-Direct Method. 2002-05 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/9515/1/FSAS_2002_44.pdf Lai, Sook Kean (2002) Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms. Masters thesis, Universiti Putra Malaysia. Ultrasonic waves - Industrial applications Ultrasonic equipment English |
| spellingShingle | Ultrasonic waves - Industrial applications Ultrasonic equipment Lai, Sook Kean Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms |
| title | Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms |
| title_full | Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms |
| title_fullStr | Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms |
| title_full_unstemmed | Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms |
| title_short | Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms |
| title_sort | development of ultrasonic technique for detection of decay in wooden cross-arms |
| topic | Ultrasonic waves - Industrial applications Ultrasonic equipment |
| url | http://psasir.upm.edu.my/id/eprint/9515/ http://psasir.upm.edu.my/id/eprint/9515/1/FSAS_2002_44.pdf |