Enhancement of sensitivity of magnetostrictive foam in low magnetic fields for sensor applications
Magnetostrictive materials are usually used in sensor technology since they are sensitive to magnetization and strain. Unfortunately, to date, only a few magnetostrictive materials are being used, as the need for a strong magnetic field (1 T) and not sensitive at a low magnetic field. Thus, in this...
| Main Authors: | , , , , , |
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| Format: | Article |
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Elsevier Ltd
2020
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| _version_ | 1796865318517211136 |
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| author | Rizuan, Norhaniza Mazlan, Saiful Amri Ubaidillah, Ubaidillah Abdul Aziz, Siti Aishah Nazmi, Nurhazimah Yunus, Nurul Azhani |
| author_facet | Rizuan, Norhaniza Mazlan, Saiful Amri Ubaidillah, Ubaidillah Abdul Aziz, Siti Aishah Nazmi, Nurhazimah Yunus, Nurul Azhani |
| author_sort | Rizuan, Norhaniza |
| collection | ePrints |
| description | Magnetostrictive materials are usually used in sensor technology since they are sensitive to magnetization and strain. Unfortunately, to date, only a few magnetostrictive materials are being used, as the need for a strong magnetic field (1 T) and not sensitive at a low magnetic field. Thus, in this study, a new magneto-active (MA) polyurethane foam was fabricated to obtain a strain at a low magnetic field corresponding to below 1 T. The in-situ fabrication of the MA foam was carried out with various compositions of carbonyl iron particles (CIPs), particularly at 35, 45, 55, 65 and 75 wt%. An analysis of the magnetic properties revealed that all the MA foams showed high magnetic saturation with low remanence values. Furthermore, the MA foam of 75 wt% showed the highest magnetostrictive strain of 1.66% at 0.45 T. The sensitivity of the MA foam is 0.0146%/mT with 42% of improvement. Analyses show MA foam of 75 wt% had a low density, biggest pores and long struts that might have led to high flexibility for elongation to produce a high strain percentage within the practical magnetic field range. Hence, this MA foam can be further utilized for sensor applications. |
| first_indexed | 2024-03-05T20:55:10Z |
| format | Article |
| id | utm.eprints-91898 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T20:55:10Z |
| publishDate | 2020 |
| publisher | Elsevier Ltd |
| record_format | dspace |
| spelling | utm.eprints-918982021-08-09T08:45:48Z http://eprints.utm.my/91898/ Enhancement of sensitivity of magnetostrictive foam in low magnetic fields for sensor applications Rizuan, Norhaniza Mazlan, Saiful Amri Ubaidillah, Ubaidillah Abdul Aziz, Siti Aishah Nazmi, Nurhazimah Yunus, Nurul Azhani T Technology (General) Magnetostrictive materials are usually used in sensor technology since they are sensitive to magnetization and strain. Unfortunately, to date, only a few magnetostrictive materials are being used, as the need for a strong magnetic field (1 T) and not sensitive at a low magnetic field. Thus, in this study, a new magneto-active (MA) polyurethane foam was fabricated to obtain a strain at a low magnetic field corresponding to below 1 T. The in-situ fabrication of the MA foam was carried out with various compositions of carbonyl iron particles (CIPs), particularly at 35, 45, 55, 65 and 75 wt%. An analysis of the magnetic properties revealed that all the MA foams showed high magnetic saturation with low remanence values. Furthermore, the MA foam of 75 wt% showed the highest magnetostrictive strain of 1.66% at 0.45 T. The sensitivity of the MA foam is 0.0146%/mT with 42% of improvement. Analyses show MA foam of 75 wt% had a low density, biggest pores and long struts that might have led to high flexibility for elongation to produce a high strain percentage within the practical magnetic field range. Hence, this MA foam can be further utilized for sensor applications. Elsevier Ltd 2020-12 Article PeerReviewed Rizuan, Norhaniza and Mazlan, Saiful Amri and Ubaidillah, Ubaidillah and Abdul Aziz, Siti Aishah and Nazmi, Nurhazimah and Yunus, Nurul Azhani (2020) Enhancement of sensitivity of magnetostrictive foam in low magnetic fields for sensor applications. Polymer, 211 . p. 123083. ISSN 0032-3861 http://dx.doi.org/10.1016/j.polymer.2020.123083 |
| spellingShingle | T Technology (General) Rizuan, Norhaniza Mazlan, Saiful Amri Ubaidillah, Ubaidillah Abdul Aziz, Siti Aishah Nazmi, Nurhazimah Yunus, Nurul Azhani Enhancement of sensitivity of magnetostrictive foam in low magnetic fields for sensor applications |
| title | Enhancement of sensitivity of magnetostrictive foam in low magnetic fields for sensor applications |
| title_full | Enhancement of sensitivity of magnetostrictive foam in low magnetic fields for sensor applications |
| title_fullStr | Enhancement of sensitivity of magnetostrictive foam in low magnetic fields for sensor applications |
| title_full_unstemmed | Enhancement of sensitivity of magnetostrictive foam in low magnetic fields for sensor applications |
| title_short | Enhancement of sensitivity of magnetostrictive foam in low magnetic fields for sensor applications |
| title_sort | enhancement of sensitivity of magnetostrictive foam in low magnetic fields for sensor applications |
| topic | T Technology (General) |
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