Study on a Controlling Method for Crack Nucleation and Propagation Behavior in Laser Cutting of Glass
Laser cutting is one of methods for breaking a brittle material by using local thermal stress due to laser irradiation without melting and vaporization of the material. In this study, a method for controlling crack nucleation and propagation behavior was studied experimentally as well as numerically...
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| Veröffentlicht in: | Journal of Solid Mechanics and Materials Engineering 2008, Vol.2(12), pp.1555-1566 |
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| container_end_page | 1566 |
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| container_issue | 12 |
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| container_title | Journal of Solid Mechanics and Materials Engineering |
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| creator | MIYASHITA, Yukio MOGI, Masashi HASEGAWA, Hirotaka SUJATANOD, Supamard MUTOH, Yoshiharu |
| description | Laser cutting is one of methods for breaking a brittle material by using local thermal stress due to laser irradiation without melting and vaporization of the material. In this study, a method for controlling crack nucleation and propagation behavior was studied experimentally as well as numerically. In case of a specimen with a starter notch, crack propagated by following a laser spot. However, crack did not follow the laser spot trace when the laser scanning direction changed. It was found from the result of FEM analysis that crack propagation behavior was controlled by a stress intensity factor for the maximum tangential stress, Kθmax ahead of crack tip. Twin beam is considered as an effective method to control crack propagation direction for the laser cutting. Crack nucleation behavior was studied with a glass specimen without a starter notch. A crack could nucleate from an edge for staring of laser irradiation in case of the specimen with defects induced by polishing with abrasive papers. However, crack nucleation and propagation behavior was unstable in case of the specimen with mirror-like smooth surface. Effect of laser spot radius on crack nucleation behavior was also studied by FEM analysis. |
| doi_str_mv | 10.1299/jmmp.2.1555 |
| format | Article |
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In this study, a method for controlling crack nucleation and propagation behavior was studied experimentally as well as numerically. In case of a specimen with a starter notch, crack propagated by following a laser spot. However, crack did not follow the laser spot trace when the laser scanning direction changed. It was found from the result of FEM analysis that crack propagation behavior was controlled by a stress intensity factor for the maximum tangential stress, Kθmax ahead of crack tip. Twin beam is considered as an effective method to control crack propagation direction for the laser cutting. Crack nucleation behavior was studied with a glass specimen without a starter notch. A crack could nucleate from an edge for staring of laser irradiation in case of the specimen with defects induced by polishing with abrasive papers. However, crack nucleation and propagation behavior was unstable in case of the specimen with mirror-like smooth surface. 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Effect of laser spot radius on crack nucleation behavior was also studied by FEM analysis.</description><subject>Brittle Material</subject><subject>Crack initiation</subject><subject>Crack Nucleation</subject><subject>Crack Propagation</subject><subject>Cracks</subject><subject>FEM Analysis</subject><subject>Finite element method</subject><subject>Fracture Mechanics</subject><subject>Glass</subject><subject>Laser beam cutting</subject><subject>Laser Cutting</subject><subject>Lasers</subject><subject>Mathematical models</subject><subject>YAG Laser</subject><issn>1880-9871</issn><issn>1880-9871</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNpNkMtOwzAQRS0EEqWw4ge8Y4FS7CRO7CVEUJDKQwLW1tSx25QkDraD1L8nUVDFZh6aM3dxELqkZEFjIW52TdMt4gVljB2hGeWcRILn9PjffIrOvN8Rkgki2Azp99CXe2xbDLiwbXC2rqt2g5912NoSG-tw4UB94Zde1RpCNZJtid-c7WAz7Xd6Cz_VQFYtXoHXw0sfwphiDV7W4P05OjFQe33x1-fo8-H-o3iMVq_Lp-J2Fakkj1kk0jJTlCVEpbnS3OQJNwpiIgTXqShzs2bcpExDZmiWmjUAT9YpI8ASxspMJ3N0NeV2zn732gfZVF7puoZW295LnlGWE5qzgbyeSOWs904b2bmqAbeXlMjRpRxdyliOLgf6dqJ3PsBGH1hwoRq0HNh4KuPP4aa24KRuk1-PgH_n</recordid><startdate>2008</startdate><enddate>2008</enddate><creator>MIYASHITA, Yukio</creator><creator>MOGI, Masashi</creator><creator>HASEGAWA, Hirotaka</creator><creator>SUJATANOD, Supamard</creator><creator>MUTOH, Yoshiharu</creator><general>The Japan Society of Mechanical Engineers</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>2008</creationdate><title>Study on a Controlling Method for Crack Nucleation and Propagation Behavior in Laser Cutting of Glass</title><author>MIYASHITA, Yukio ; MOGI, Masashi ; HASEGAWA, Hirotaka ; SUJATANOD, Supamard ; MUTOH, Yoshiharu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3725-94d6c1530c47ce8f738fca20998e49d7fb58f45ea6f164fbaa83b450a5355d6e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Brittle Material</topic><topic>Crack initiation</topic><topic>Crack Nucleation</topic><topic>Crack Propagation</topic><topic>Cracks</topic><topic>FEM Analysis</topic><topic>Finite element method</topic><topic>Fracture Mechanics</topic><topic>Glass</topic><topic>Laser beam cutting</topic><topic>Laser Cutting</topic><topic>Lasers</topic><topic>Mathematical models</topic><topic>YAG Laser</topic><toplevel>online_resources</toplevel><creatorcontrib>MIYASHITA, Yukio</creatorcontrib><creatorcontrib>MOGI, Masashi</creatorcontrib><creatorcontrib>HASEGAWA, Hirotaka</creatorcontrib><creatorcontrib>SUJATANOD, Supamard</creatorcontrib><creatorcontrib>MUTOH, Yoshiharu</creatorcontrib><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of Solid Mechanics and Materials Engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>MIYASHITA, Yukio</au><au>MOGI, Masashi</au><au>HASEGAWA, Hirotaka</au><au>SUJATANOD, Supamard</au><au>MUTOH, Yoshiharu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study on a Controlling Method for Crack Nucleation and Propagation Behavior in Laser Cutting of Glass</atitle><jtitle>Journal of Solid Mechanics and Materials Engineering</jtitle><addtitle>JSMME</addtitle><date>2008</date><risdate>2008</risdate><volume>2</volume><issue>12</issue><spage>1555</spage><epage>1566</epage><pages>1555-1566</pages><issn>1880-9871</issn><eissn>1880-9871</eissn><abstract>Laser cutting is one of methods for breaking a brittle material by using local thermal stress due to laser irradiation without melting and vaporization of the material. In this study, a method for controlling crack nucleation and propagation behavior was studied experimentally as well as numerically. In case of a specimen with a starter notch, crack propagated by following a laser spot. However, crack did not follow the laser spot trace when the laser scanning direction changed. It was found from the result of FEM analysis that crack propagation behavior was controlled by a stress intensity factor for the maximum tangential stress, Kθmax ahead of crack tip. Twin beam is considered as an effective method to control crack propagation direction for the laser cutting. Crack nucleation behavior was studied with a glass specimen without a starter notch. A crack could nucleate from an edge for staring of laser irradiation in case of the specimen with defects induced by polishing with abrasive papers. However, crack nucleation and propagation behavior was unstable in case of the specimen with mirror-like smooth surface. 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| ispartof | Journal of Solid Mechanics and Materials Engineering, 2008, Vol.2(12), pp.1555-1566 |
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| language | eng |
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| source | EZB Electronic Journals Library; J-STAGE |
| subjects | Brittle Material Crack initiation Crack Nucleation Crack Propagation Cracks FEM Analysis Finite element method Fracture Mechanics Glass Laser beam cutting Laser Cutting Lasers Mathematical models YAG Laser |
| title | Study on a Controlling Method for Crack Nucleation and Propagation Behavior in Laser Cutting of Glass |
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