Testing of Piezoresistive Polyurethane-Fe3O4Composites
| Autor: | S.M. Pilgrim, W. B. Carlson, S. F. Bartkowski, Walter A. Schulze |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Orders of magnitude (temperature) Composite number Epoxy Condensed Matter Physics Piezoresistive effect Electronic Optical and Magnetic Materials law.invention Compressive strength Electrical resistance and conductance Electrical resistivity and conductivity law visual_art visual_art.visual_art_medium Composite material Hydrostatic equilibrium |
| Zdroj: | Ferroelectrics. 331:83-88 |
| ISSN: | 1563-5112 0015-0193 |
| DOI: | 10.1080/00150190600735234 |
| Popis: | The piezoresistance of Fe 3 O 4 particles encapsulated in polyurethane forming a composite material were studied for hydrostatic and uniaxial response. Electrical and mechanical properties were examined in composite disks with volume percents of Fe 3 O 4 loading between 35 and 54%. Uniaxial and hydrostatic loading tests were conducted for electrical resistance under mechanical stress. Data obtained for the uniaxially loaded samples indicate that resistance changes of 5 to 6 orders of magnitude can be tailored in polyurethane composites. Under hydrostatic loading testing indicates that resistance changes of 2 orders of magnitude can be obtained. Mounting the piezoresistors in a rigid epoxy improves the hydrostatic response of the samples allowing resistance change of up to 3 orders of magnitude. Further tests indicate a change of almost 5 orders of magnitude are possible when highly compliant lateral air gaps are incorporated into the sample. |
| Databáze: | OpenAIRE |
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