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Article: On the effects of an electric field on the fracture toughness of poled piezoelectric ceramics

TitleOn the effects of an electric field on the fracture toughness of poled piezoelectric ceramics
Authors
KeywordsElectric field
Fracture toughness
Piezoelectric ceramics
Issue Date2003
PublisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/msea
Citation
Materials Science And Engineering A, 2003, v. 360 n. 1-2, p. 306-314 How to Cite?
AbstractCentral crack specimens have been used to study the effects of an applied electric field on the fracture toughness of poled soft lead zirconate titanate ceramics (PZT-5). The ultrasonic lapping technique was used to machine the central crack of the specimens used. The present experimental study illustrated that changing the field from negative to positive reduced the fracture toughness of a specimen subjected to an applied electric field. These experimental results were in agreement with the observations made by Park and Sun (J. Am. Ceram. Soc. 78 (1995) 1475) and Heyer et al. (Acta Mater. 46 (1998) 6615). Finite element results were employed to compare with the experimental data. Four fracture criteria, i.e. total energy release rate, mechanical energy release rate, local energy release rate and strain energy release rate, were compared with the experimental results. It was found the local energy release rate, which was defined based on a strip electric saturation model, was in broad agreement with the experimental observations. Moreover, it was found that the strain energy density criterion was unable to describe the effect of electric field on fracture toughness when a large electric field was applied. © 2003 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/75502
ISSN
2015 Impact Factor: 2.647
2015 SCImago Journal Rankings: 1.803
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSoh, AKen_HK
dc.contributor.authorLee, KLen_HK
dc.contributor.authorFang, DNen_HK
dc.date.accessioned2010-09-06T07:11:47Z-
dc.date.available2010-09-06T07:11:47Z-
dc.date.issued2003en_HK
dc.identifier.citationMaterials Science And Engineering A, 2003, v. 360 n. 1-2, p. 306-314en_HK
dc.identifier.issn0921-5093en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75502-
dc.description.abstractCentral crack specimens have been used to study the effects of an applied electric field on the fracture toughness of poled soft lead zirconate titanate ceramics (PZT-5). The ultrasonic lapping technique was used to machine the central crack of the specimens used. The present experimental study illustrated that changing the field from negative to positive reduced the fracture toughness of a specimen subjected to an applied electric field. These experimental results were in agreement with the observations made by Park and Sun (J. Am. Ceram. Soc. 78 (1995) 1475) and Heyer et al. (Acta Mater. 46 (1998) 6615). Finite element results were employed to compare with the experimental data. Four fracture criteria, i.e. total energy release rate, mechanical energy release rate, local energy release rate and strain energy release rate, were compared with the experimental results. It was found the local energy release rate, which was defined based on a strip electric saturation model, was in broad agreement with the experimental observations. Moreover, it was found that the strain energy density criterion was unable to describe the effect of electric field on fracture toughness when a large electric field was applied. © 2003 Elsevier B.V. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier SA. The Journal's web site is located at http://www.elsevier.com/locate/mseaen_HK
dc.relation.ispartofMaterials Science and Engineering Aen_HK
dc.subjectElectric fielden_HK
dc.subjectFracture toughnessen_HK
dc.subjectPiezoelectric ceramicsen_HK
dc.titleOn the effects of an electric field on the fracture toughness of poled piezoelectric ceramicsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0921-5093&volume=360&issue=1-2&spage=306&epage=314&date=2003&atitle=On+the+effects+of+an+electric+field+on+the+fracture+toughness+of+poled+piezoelectric+ceramicsen_HK
dc.identifier.emailSoh, AK:aksoh@hkucc.hku.hken_HK
dc.identifier.authoritySoh, AK=rp00170en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0921-5093(03)00475-1en_HK
dc.identifier.scopuseid_2-s2.0-0141994511en_HK
dc.identifier.hkuros88990en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0141994511&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume360en_HK
dc.identifier.issue1-2en_HK
dc.identifier.spage306en_HK
dc.identifier.epage314en_HK
dc.identifier.isiWOS:000185793500040-
dc.publisher.placeSwitzerlanden_HK
dc.identifier.scopusauthoridSoh, AK=7006795203en_HK
dc.identifier.scopusauthoridLee, KL=7501505110en_HK
dc.identifier.scopusauthoridFang, DN=7202133612en_HK

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