Evaluation of internal properties of agarwood tree using ultrasonic velocity measurement / Fakhuruzi Mohammad

Mohammad, Fakhuruzi (2010) Evaluation of internal properties of agarwood tree using ultrasonic velocity measurement / Fakhuruzi Mohammad. [Student Project] (Unpublished)

Abstract

This study presents the application of ultrasonic velocity in agarwood trees (Aquilaria crassna) with the purpose of evaluating the relationship of the ultrasonic velocity to the variations of internal properties of trees. In this study, three circular cross-sectional discs from the freshly cut fallen trees were selected as samples. First sample with a big hole (decay) in the middle, second sample with internal resinous and the last one is the sample with no defects. The through transmission ultrasonic testing method was carried out using Tico ultrasonic pulse velocity tester which is from Switzerland. Two-dimensional image of internal properties evaluation by an ultrasonic investigation was obtained using Matlab. The results showed that the ultrasonic wave cannot pass through the internal decay or resinous so that the wave went round it and thus ultrasonic wave velocity significantly decreased by increasing the hole or resinous. The difference in colour of the image generated by Matlab software based on variation of ultrasonic velocity between the internal decay area and its surrounding area was obvious. Therefore, the properties of internal properties of the tree could be detected by ultrasonic line imaging technique. Besides, the results also showed that ultrasonic velocity is sensitive to changes in moisture content. The ultrasonic velocity measured increased with decreasing moisture content.

Metadata

Item Type: Student Project
Creators:
Creators
Email / ID Num.
Mohammad, Fakhuruzi
UNSPECIFIED
Contributors:
Contribution
Name
Email / ID Num.
Thesis advisor
Syed Yahaya, Syed Yusainee (Dr)
UNSPECIFIED
Subjects: Q Science > QC Physics > Geophysics. Cosmic physics
Q Science > QC Physics > Weights and measures
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Applied Sciences
Programme: Bachelor of Science (Hons.) Physics
Date: 2010
URI: https://ir.uitm.edu.my/id/eprint/46699
Edit Item
Edit Item

Download

[thumbnail of 46699.pdf] Text
46699.pdf

Download (140kB)

Digital Copy

Digital (fulltext) is available at:

Physical Copy

Physical status and holdings:
Item Status:
Processing

ID Number

46699

Indexing

Statistic

Statistic details