Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms

Lai, Sook Kean (2002) Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms. Masters thesis, Universiti Putra Malaysia.

[img] PDF
2150Kb

Abstract

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.

Item Type:Thesis (Masters)
Subject:Ultrasonic waves - Industrial applications
Subject:Ultrasonic equipment
Chairman Supervisor:Professor Dr. Kaida bin Khalid
Call Number:FSAS 2002 44
Faculty or Institute:Faculty of Science and Environmental Studies
ID Code:9515
Deposited By: Muizzudin Kaspol
Deposited On:11 Feb 2011 09:32
Last Modified:01 Oct 2013 03:22

Repository Staff Only: Edit item detail

Document Download Statistics

This item has been downloaded for since 11 Feb 2011 09:32.

View statistics for "Development of Ultrasonic Technique for Detection of Decay in Wooden Cross-Arms"


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.