Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop
The main objective of this project is to develop a microwave free-space measurement system in the frequency range of 8.0 to 12.5 GHz (X-Band) to measure reflection and transmission coefficients , Sn and S2i of planar samples such as Polyvinyl-Chloride (PVC), Polypropylene (PP), Nylon, Polyethylene (...
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| Format: | Thesis |
| Language: | English |
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1997
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| Online Access: | https://ir.uitm.edu.my/id/eprint/100737/1/100737.pdf |
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my-uitm-ir.1007372024-08-17T14:51:39Z Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop 1997 Mohamad Ali Yakop, Suhardi The main objective of this project is to develop a microwave free-space measurement system in the frequency range of 8.0 to 12.5 GHz (X-Band) to measure reflection and transmission coefficients , Sn and S2i of planar samples such as Polyvinyl-Chloride (PVC), Polypropylene (PP), Nylon, Polyethylene (PE), Polyurethane and Teflon. The complex electric permittivity (s *) and complex magnetic permeability (^i*) are calculated from the measured values Sn and S2] by using a C++ language program. The measurement system consist of transmit and receive horn lens antennas, Wiltron Vector Network Analyzer, mode transitions and a printer. Diffraction effects at the edges of the samples are minimized by using spot-focusing lens antennas. Error due to multiple reflections between antennas via the surface of the sample are corrected by using a free-space LRL (Line, Reflect, Line) calibration technique. 1997 Thesis https://ir.uitm.edu.my/id/eprint/100737/ https://ir.uitm.edu.my/id/eprint/100737/1/100737.pdf text en public degree Universiti Teknologi MARA (UiTM) Faculty of Electrical Engineering |
| institution |
Universiti Teknologi MARA |
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UiTM Institutional Repository |
| language |
English |
| description |
The main objective of this project is to develop a microwave free-space measurement system in the frequency range of 8.0 to 12.5 GHz (X-Band) to measure reflection and transmission coefficients , Sn and S2i of planar samples such as Polyvinyl-Chloride (PVC), Polypropylene (PP), Nylon, Polyethylene (PE), Polyurethane and Teflon. The complex electric permittivity (s *) and complex magnetic permeability (^i*) are calculated from the measured values Sn and S2] by using a C++ language program. The measurement system consist of transmit and receive horn lens antennas, Wiltron Vector Network Analyzer, mode transitions and a printer. Diffraction effects at the edges of the samples are minimized by using spot-focusing lens antennas. Error due to multiple reflections between antennas via the surface of the sample are corrected by using a free-space LRL (Line, Reflect, Line) calibration technique. |
| format |
Thesis |
| qualification_level |
Bachelor degree |
| author |
Mohamad Ali Yakop, Suhardi |
| spellingShingle |
Mohamad Ali Yakop, Suhardi Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop |
| author_facet |
Mohamad Ali Yakop, Suhardi |
| author_sort |
Mohamad Ali Yakop, Suhardi |
| title |
Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop |
| title_short |
Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop |
| title_full |
Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop |
| title_fullStr |
Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop |
| title_full_unstemmed |
Microwave nondestructive testing of composite materials using a free space technique / Suhardi Mohamad Ali Yakop |
| title_sort |
microwave nondestructive testing of composite materials using a free space technique / suhardi mohamad ali yakop |
| granting_institution |
Universiti Teknologi MARA (UiTM) |
| granting_department |
Faculty of Electrical Engineering |
| publishDate |
1997 |
| url |
https://ir.uitm.edu.my/id/eprint/100737/1/100737.pdf |
| _version_ |
1811769088989462528 |