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Phase-field model for dielectric breakdown in solids
Using an analogy between dielectric breakdown and fracture of solids, this paper develops a phase field model for the electric damage initiation and propagation in dielectric solids during breakdown. Instead of explicitly tracing the growth of a conductive channel, the model introduces a continuous...
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Published in: | Journal of applied physics 2014-01, Vol.115 (4) |
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creator | Chaitanya Pitike, Krishna Hong, Wei |
description | Using an analogy between dielectric breakdown and fracture of solids, this paper develops a phase field model for the electric damage initiation and propagation in dielectric solids during breakdown. Instead of explicitly tracing the growth of a conductive channel, the model introduces a continuous phase field to characterize the degree of damage, and the conductive channel is represented by a localized region of fully damaged material. Similar as in the classic theory of fracture mechanics, an energetic criterion is taken: The conductive channel will grow only if the electrostatic energy released per unit length of the channel is greater than that dissipated through damage. Such an approach circumvents the detailed analysis on the complex microscopic processes near the tip of a conductive channel and provides a means of quantitatively predicting breakdown phenomena in materials, composites, and devices. This model is implemented into a finite-element code, and several numerical examples are solved. With randomly distributed defects, the model recovers the inverse power relation between breakdown strength and sample thickness. Finally, the effect of the layered structure in a breakdown-resistant laminate is demonstrated through a numerical example. |
doi_str_mv | 10.1063/1.4862929 |
format | article |
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Instead of explicitly tracing the growth of a conductive channel, the model introduces a continuous phase field to characterize the degree of damage, and the conductive channel is represented by a localized region of fully damaged material. Similar as in the classic theory of fracture mechanics, an energetic criterion is taken: The conductive channel will grow only if the electrostatic energy released per unit length of the channel is greater than that dissipated through damage. Such an approach circumvents the detailed analysis on the complex microscopic processes near the tip of a conductive channel and provides a means of quantitatively predicting breakdown phenomena in materials, composites, and devices. This model is implemented into a finite-element code, and several numerical examples are solved. With randomly distributed defects, the model recovers the inverse power relation between breakdown strength and sample thickness. Finally, the effect of the layered structure in a breakdown-resistant laminate is demonstrated through a numerical example.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/1.4862929</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Crack initiation ; Damage localization ; Dielectric breakdown ; Energy dissipation ; Finite element method ; Fracture mechanics ; Mathematical models ; Static electricity</subject><ispartof>Journal of applied physics, 2014-01, Vol.115 (4)</ispartof><rights>2014 AIP Publishing LLC.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c393t-8e20ece2a39eb2ae9fea0cbf719f4d0172c51fd88782924b49c027c961879bc73</citedby><cites>FETCH-LOGICAL-c393t-8e20ece2a39eb2ae9fea0cbf719f4d0172c51fd88782924b49c027c961879bc73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Chaitanya Pitike, Krishna</creatorcontrib><creatorcontrib>Hong, Wei</creatorcontrib><title>Phase-field model for dielectric breakdown in solids</title><title>Journal of applied physics</title><description>Using an analogy between dielectric breakdown and fracture of solids, this paper develops a phase field model for the electric damage initiation and propagation in dielectric solids during breakdown. Instead of explicitly tracing the growth of a conductive channel, the model introduces a continuous phase field to characterize the degree of damage, and the conductive channel is represented by a localized region of fully damaged material. Similar as in the classic theory of fracture mechanics, an energetic criterion is taken: The conductive channel will grow only if the electrostatic energy released per unit length of the channel is greater than that dissipated through damage. Such an approach circumvents the detailed analysis on the complex microscopic processes near the tip of a conductive channel and provides a means of quantitatively predicting breakdown phenomena in materials, composites, and devices. This model is implemented into a finite-element code, and several numerical examples are solved. With randomly distributed defects, the model recovers the inverse power relation between breakdown strength and sample thickness. Finally, the effect of the layered structure in a breakdown-resistant laminate is demonstrated through a numerical example.</description><subject>Applied physics</subject><subject>Crack initiation</subject><subject>Damage localization</subject><subject>Dielectric breakdown</subject><subject>Energy dissipation</subject><subject>Finite element method</subject><subject>Fracture mechanics</subject><subject>Mathematical models</subject><subject>Static electricity</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNotkE9LAzEUxIMoWKsHv8GCJw9b30t2m7yjFP9BQQ96DtnkBbdum5q0iN_elfY0DPyYGUaIa4QZwlzd4awxc0mSTsQEwVCt2xZOxQRAYm1I07m4KGUFgGgUTUTz9ukK17HnIVTrFHioYspVGD37Xe591WV2XyH9bKp-U5U09KFcirPohsJXR52Kj8eH98VzvXx9elncL2uvSO1qwxLYs3SKuJOOKbID30WNFJsAqKVvMQZjtBkXN11DHqT2NEejqfNaTcXNIXeb0_eey86u0j5vxkorUWrdNmRwpG4PlM-plMzRbnO_dvnXItj_Uyza4ynqD4ZEUmY</recordid><startdate>20140128</startdate><enddate>20140128</enddate><creator>Chaitanya Pitike, Krishna</creator><creator>Hong, Wei</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope></search><sort><creationdate>20140128</creationdate><title>Phase-field model for dielectric breakdown in solids</title><author>Chaitanya Pitike, Krishna ; Hong, Wei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c393t-8e20ece2a39eb2ae9fea0cbf719f4d0172c51fd88782924b49c027c961879bc73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied physics</topic><topic>Crack initiation</topic><topic>Damage localization</topic><topic>Dielectric breakdown</topic><topic>Energy dissipation</topic><topic>Finite element method</topic><topic>Fracture mechanics</topic><topic>Mathematical models</topic><topic>Static electricity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chaitanya Pitike, Krishna</creatorcontrib><creatorcontrib>Hong, Wei</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chaitanya Pitike, Krishna</au><au>Hong, Wei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Phase-field model for dielectric breakdown in solids</atitle><jtitle>Journal of applied physics</jtitle><date>2014-01-28</date><risdate>2014</risdate><volume>115</volume><issue>4</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><abstract>Using an analogy between dielectric breakdown and fracture of solids, this paper develops a phase field model for the electric damage initiation and propagation in dielectric solids during breakdown. Instead of explicitly tracing the growth of a conductive channel, the model introduces a continuous phase field to characterize the degree of damage, and the conductive channel is represented by a localized region of fully damaged material. Similar as in the classic theory of fracture mechanics, an energetic criterion is taken: The conductive channel will grow only if the electrostatic energy released per unit length of the channel is greater than that dissipated through damage. Such an approach circumvents the detailed analysis on the complex microscopic processes near the tip of a conductive channel and provides a means of quantitatively predicting breakdown phenomena in materials, composites, and devices. This model is implemented into a finite-element code, and several numerical examples are solved. With randomly distributed defects, the model recovers the inverse power relation between breakdown strength and sample thickness. Finally, the effect of the layered structure in a breakdown-resistant laminate is demonstrated through a numerical example.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4862929</doi></addata></record> |
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subjects | Applied physics Crack initiation Damage localization Dielectric breakdown Energy dissipation Finite element method Fracture mechanics Mathematical models Static electricity |
title | Phase-field model for dielectric breakdown in solids |
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