| Autor: |
Khaidir, Rahayu Emilia Mohamed, Nordin, Nur Azmah, Mazlan, Saiful Amri, Ubaidillah, Ubaidillah, Leong, Siti Asma' Nikmat, Rahman, Hamimah Abd, Marzuki, Ainaa Amirah |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2024, Vol. 3239 Issue 1, p1-7, 7p |
| Abstrakt: |
A novel type of magnetorheological (MR) foam that provides unique porous structure with embedded magnetic particles somehow could response to magnetic field stimuli continuously, actively and reversibly. Its low density and controllable properties have rendered MR foam to be a new potential smart material for advance applications such as smart actuators or sensors technology. Unfortunately, the rheological properties in terms of stiffness or known as storage modulus of MR foam is still rather limited, in the range of below than 1 MPa to withstand frequencies with high amplitude displacement during the operational system. Therefore, the aim of this research is to enhance the rheological properties of MR foam in terms of storage modulus by adding silica nanoparticles as an additive. In this study, MR foams were fabricated with different compositions of silica nano-particles in the range of 0 to 5 wt.%, with 1 wt.% increment. The rheological testing was carried out using modular compact rheometer (MCR) under different frequency inputs in the range of 1 to 10 Hz, with the absence and presence of magnetic field at 0 T and 0.8 T, respectively. The finding has revealed that the storage modulus of MR foam has significantly increased up to ∼273% during the off-state condition and further increased to ∼346% at the on-state condition, indicating higher stiffness of MR foam with silica nanoparticles as compared to non-additive MR foam. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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