A Novel Piezo-Actuator-Sensor Micromachine for Mechanical Characterization of Micro-Specimens
Difficulties associated with testing and characterization of materials at microscale demands for new technologies and devices that are capable of measuring forces and strains at microscale. To address this issue, a novel electroactive-based micro-electro-mechanical machine is designed. The micromach...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2010-12-01
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| Series: | Micromachines |
| Subjects: | |
| Online Access: | http://www.mdpi.com/2072-666X/1/3/129/ |
| _version_ | 1818642890836934656 |
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| author | Leila Ladani Steven Nelson |
| author_facet | Leila Ladani Steven Nelson |
| author_sort | Leila Ladani |
| collection | DOAJ |
| description | Difficulties associated with testing and characterization of materials at microscale demands for new technologies and devices that are capable of measuring forces and strains at microscale. To address this issue, a novel electroactive-based micro-electro-mechanical machine is designed. The micromachine is comprised of two electroactive (piezoelectric) micro-elements mounted on a rigid frame. Electrical activation of one of the elements causes it to expand and induce a stress in the intervening micro-specimen. The response of the microspecimen to the stress is measured by the deformation and thereby voltage/resistance induced in the second electro-active element. The concept is theoretically proven using analytical modeling in conjunction with non-linear, three dimensional finite element analyses for the micromachine. Correlation of the output voltage to the specimen stiffness is shown. It is also demonstrated through finite element and analytical analysis that this technique is capable of detecting non-linear behavior of materials. A characteristic curve for an isotropic specimen exhibiting linear elastic behavior is developed. Application of the proposed device in measuring coefficient of thermal expansion is explored and analytical analysis is conducted. |
| first_indexed | 2024-12-16T23:50:15Z |
| format | Article |
| id | doaj.art-5dff6cb16df14d229bf8317a426508fe |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-12-16T23:50:15Z |
| publishDate | 2010-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-5dff6cb16df14d229bf8317a426508fe2022-12-21T22:11:22ZengMDPI AGMicromachines2072-666X2010-12-011312915210.3390/microm1030129A Novel Piezo-Actuator-Sensor Micromachine for Mechanical Characterization of Micro-SpecimensLeila LadaniSteven NelsonDifficulties associated with testing and characterization of materials at microscale demands for new technologies and devices that are capable of measuring forces and strains at microscale. To address this issue, a novel electroactive-based micro-electro-mechanical machine is designed. The micromachine is comprised of two electroactive (piezoelectric) micro-elements mounted on a rigid frame. Electrical activation of one of the elements causes it to expand and induce a stress in the intervening micro-specimen. The response of the microspecimen to the stress is measured by the deformation and thereby voltage/resistance induced in the second electro-active element. The concept is theoretically proven using analytical modeling in conjunction with non-linear, three dimensional finite element analyses for the micromachine. Correlation of the output voltage to the specimen stiffness is shown. It is also demonstrated through finite element and analytical analysis that this technique is capable of detecting non-linear behavior of materials. A characteristic curve for an isotropic specimen exhibiting linear elastic behavior is developed. Application of the proposed device in measuring coefficient of thermal expansion is explored and analytical analysis is conducted.http://www.mdpi.com/2072-666X/1/3/129/strainelectroactivepiezoelectricsmart materialsactuatorsensor |
| spellingShingle | Leila Ladani Steven Nelson A Novel Piezo-Actuator-Sensor Micromachine for Mechanical Characterization of Micro-Specimens Micromachines strain electroactive piezoelectric smart materials actuator sensor |
| title | A Novel Piezo-Actuator-Sensor Micromachine for Mechanical Characterization of Micro-Specimens |
| title_full | A Novel Piezo-Actuator-Sensor Micromachine for Mechanical Characterization of Micro-Specimens |
| title_fullStr | A Novel Piezo-Actuator-Sensor Micromachine for Mechanical Characterization of Micro-Specimens |
| title_full_unstemmed | A Novel Piezo-Actuator-Sensor Micromachine for Mechanical Characterization of Micro-Specimens |
| title_short | A Novel Piezo-Actuator-Sensor Micromachine for Mechanical Characterization of Micro-Specimens |
| title_sort | novel piezo actuator sensor micromachine for mechanical characterization of micro specimens |
| topic | strain electroactive piezoelectric smart materials actuator sensor |
| url | http://www.mdpi.com/2072-666X/1/3/129/ |
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