Soh, Shi Chuan and M. Z., Ibrahim and M. F., Abas and Norizam, Sulaiman and Mulvaney, D. J. (2019) Image fusion based multi resolution and frequency partition discrete cosine transform for palm vein recognition. In: 6th IEEE International Conference on Industrial Engineering and Applications, ICIEA 2019 , 12-15 April 2019 , Tokyo, Japan. pp. 367-371. (8715136). ISBN 9781728108513, 9781728108513 (online)
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Abstract
Over long service periods, pipelines are subjected to deterioration and damage, which can reduce their strength and structural integrity. Repair mechanisms have been developed for restoring the loading capacity of damaged pipelines; in this context, composite-repair systems have become popular over the past few years. The material properties of the repair system components (putty and composite wrap) are critical in designing the repair and understanding the behaviour of a composite-repaired pipe. In this study, the mechanical properties of steel pipe, putty, and composite wrap were investigated individually through laboratory tests. The behaviour of all the materials is discussed to understand their response under various loading conditions. The steel pipes showed the highest tensile strength and modulus. The composite wrap shows better performance during tensile testing than during compression testing. Meanwhile, the putty recorded superior compressive properties as compared to its tensile and flexural properties. The steel pipe shows ductile behaviour while the putty and composite wrap exhibit brittle behaviour. The study was then followed by full-scale pipeline burst tests and finite element analyses on a defective pipe and a composite-repaired pipe. The results show that the burst pressure of the composite-repaired pipe increased by 23% and it experienced significantly reduced strain in the defect region. Detailed information on the burst pressure and strain reading over the entire applied pressure range was recorded for all the components of the burst-test specimens and their behaviour is discussed to achieve a better understanding of composite-repaired pipes. These findings can be very useful in the optimising the existing composite repair design procedures.
| Item Type: | Conference or Workshop Item (Lecture) |
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| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Discrete cosine transforms; Veins; Image fusion; Feature extraction; Discrete wavelet transforms; Mathematical model; Image recognition |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Faculty/Division: | Faculty of Electrical & Electronic Engineering |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 03 Jul 2019 08:41 |
| Last Modified: | 03 Jul 2019 08:41 |
| URI: | http://umpir.ump.edu.my/id/eprint/25204 |
| Download Statistic: | View Download Statistics |
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