Flexoelectric strain gradient detection using Ba0.64Sr 0.36TiO3 for sensing

Wenbin Huang; Xiang Yan; Seol Ryung Kwon; Shujun Zhang; Fuh Gwo Yuan; Xiaoning Jiang

doi:10.1063/1.4772803

Flexoelectric strain gradient detection using Ba_0.64Sr _0.36TiO₃ for sensing

Wenbin Huang, Xiang Yan, Seol Ryung Kwon, Shujun Zhang, Fuh Gwo Yuan, Xiaoning Jiang

Materials Research Institute (MRI)

Research output: Contribution to journal › Article › peer-review

66 Scopus citations

Abstract

Strain gradient sensing offers an alternative avenue for in-situ monitoring of onset and growth of cracks in structural health monitoring, where the strain gradient is the most sensitive measurand. In this study, flexoelectric strain gradient sensing structures using Ba_0.64Sr_0.36TiO ₃ (BST) were attached on the proximity of an open hole in an aluminum plate, to monitor strain gradient variations of the specimen under a uniaxial dynamic load. Charge outputs of the BST micro-bars showed good linearity with the average strain gradients, with a sensitivity of 88 pC m, which is in good agreement with the theoretical estimation by assuming a 30 μm bonding thickness.

Original language	English (US)
Article number	252903
Journal	Applied Physics Letters
Volume	101
Issue number	25
DOIs	https://doi.org/10.1063/1.4772803
State	Published - Dec 17 2012

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.4772803

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title = "Flexoelectric strain gradient detection using Ba0.64Sr 0.36TiO3 for sensing",

abstract = "Strain gradient sensing offers an alternative avenue for in-situ monitoring of onset and growth of cracks in structural health monitoring, where the strain gradient is the most sensitive measurand. In this study, flexoelectric strain gradient sensing structures using Ba0.64Sr0.36TiO 3 (BST) were attached on the proximity of an open hole in an aluminum plate, to monitor strain gradient variations of the specimen under a uniaxial dynamic load. Charge outputs of the BST micro-bars showed good linearity with the average strain gradients, with a sensitivity of 88 pC m, which is in good agreement with the theoretical estimation by assuming a 30 μm bonding thickness.",

author = "Wenbin Huang and Xiang Yan and Kwon, {Seol Ryung} and Shujun Zhang and Yuan, {Fuh Gwo} and Xiaoning Jiang",

note = "Funding Information: This material is based upon work supported by, or in part by, the U.S. Army Research Laboratory and the U. S. Army Research Office under Contract/Grant No. W911NF-11-1-0516; and in part by National Science Foundation under Grant No. CMMI-1068345.",

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AU - Huang, Wenbin

AU - Yan, Xiang

AU - Kwon, Seol Ryung

AU - Zhang, Shujun

AU - Yuan, Fuh Gwo

AU - Jiang, Xiaoning

N1 - Funding Information: This material is based upon work supported by, or in part by, the U.S. Army Research Laboratory and the U. S. Army Research Office under Contract/Grant No. W911NF-11-1-0516; and in part by National Science Foundation under Grant No. CMMI-1068345.

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N2 - Strain gradient sensing offers an alternative avenue for in-situ monitoring of onset and growth of cracks in structural health monitoring, where the strain gradient is the most sensitive measurand. In this study, flexoelectric strain gradient sensing structures using Ba0.64Sr0.36TiO 3 (BST) were attached on the proximity of an open hole in an aluminum plate, to monitor strain gradient variations of the specimen under a uniaxial dynamic load. Charge outputs of the BST micro-bars showed good linearity with the average strain gradients, with a sensitivity of 88 pC m, which is in good agreement with the theoretical estimation by assuming a 30 μm bonding thickness.

AB - Strain gradient sensing offers an alternative avenue for in-situ monitoring of onset and growth of cracks in structural health monitoring, where the strain gradient is the most sensitive measurand. In this study, flexoelectric strain gradient sensing structures using Ba0.64Sr0.36TiO 3 (BST) were attached on the proximity of an open hole in an aluminum plate, to monitor strain gradient variations of the specimen under a uniaxial dynamic load. Charge outputs of the BST micro-bars showed good linearity with the average strain gradients, with a sensitivity of 88 pC m, which is in good agreement with the theoretical estimation by assuming a 30 μm bonding thickness.

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Flexoelectric strain gradient detection using Ba_0.64Sr _0.36TiO₃ for sensing

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