Measurement of Opening Displacement near Rapidly Propagating Crack Tip in PMMA
Pulsed holographic microscopy was applied to take an instantaneous microscopic photograph of a rapidly propagating crack in PMMA. The crack was in the opening mode and its speed was at several hundred m/s. The crack and craze opening displacement, which are both called COD, were measured as a functi...
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| Veröffentlicht in: | Journal of the Society of Materials Science, Japan Japan, 1990/08/15, Vol.39(443), pp.1157-1161 |
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| container_issue | 443 |
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| container_title | Journal of the Society of Materials Science, Japan |
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| creator | SUZUKI, Shinichi KAWACHI, Masahiro KATO, Munehisa NAKAJIMA, Takurou |
| description | Pulsed holographic microscopy was applied to take an instantaneous microscopic photograph of a rapidly propagating crack in PMMA. The crack was in the opening mode and its speed was at several hundred m/s. The crack and craze opening displacement, which are both called COD, were measured as a function of distance r from the craze tip within the region of r up to 8mm. The crack opening displacement was nearly proportional to √r, while the craze opening displacement deviated from the curve of √r. The crack tip opening displacement (CTOD) was determined from the measured COD data, and the dynamic stress intensity factor KI(v) was also obtained. Furthermore, the value of J-integral was calculated by assuming small scale yielding. It happens that cracks which have the same KI(v) value and crack speed show different COD profile in the craze layer. |
| doi_str_mv | 10.2472/jsms.39.1157 |
| format | Article |
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The crack was in the opening mode and its speed was at several hundred m/s. The crack and craze opening displacement, which are both called COD, were measured as a function of distance r from the craze tip within the region of r up to 8mm. The crack opening displacement was nearly proportional to √r, while the craze opening displacement deviated from the curve of √r. The crack tip opening displacement (CTOD) was determined from the measured COD data, and the dynamic stress intensity factor KI(v) was also obtained. Furthermore, the value of J-integral was calculated by assuming small scale yielding. It happens that cracks which have the same KI(v) value and crack speed show different COD profile in the craze layer.</description><identifier>ISSN: 0514-5163</identifier><identifier>EISSN: 1880-7488</identifier><identifier>DOI: 10.2472/jsms.39.1157</identifier><language>jpn</language><publisher>The Society of Materials Science, Japan</publisher><subject>COD ; Craze ; Fast propagating crack ; Fracture ; Holography ; Measurement ; Optical engineering ; PMMA</subject><ispartof>Journal of the Society of Materials Science, Japan, 1990/08/15, Vol.39(443), pp.1157-1161</ispartof><rights>by The Society of Materials Science, Japan</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1883,27924,27925</link.rule.ids></links><search><creatorcontrib>SUZUKI, Shinichi</creatorcontrib><creatorcontrib>KAWACHI, Masahiro</creatorcontrib><creatorcontrib>KATO, Munehisa</creatorcontrib><creatorcontrib>NAKAJIMA, Takurou</creatorcontrib><title>Measurement of Opening Displacement near Rapidly Propagating Crack Tip in PMMA</title><title>Journal of the Society of Materials Science, Japan</title><addtitle>J. Soc. Mat. Sci., Japan</addtitle><description>Pulsed holographic microscopy was applied to take an instantaneous microscopic photograph of a rapidly propagating crack in PMMA. The crack was in the opening mode and its speed was at several hundred m/s. The crack and craze opening displacement, which are both called COD, were measured as a function of distance r from the craze tip within the region of r up to 8mm. The crack opening displacement was nearly proportional to √r, while the craze opening displacement deviated from the curve of √r. The crack tip opening displacement (CTOD) was determined from the measured COD data, and the dynamic stress intensity factor KI(v) was also obtained. Furthermore, the value of J-integral was calculated by assuming small scale yielding. It happens that cracks which have the same KI(v) value and crack speed show different COD profile in the craze layer.</description><subject>COD</subject><subject>Craze</subject><subject>Fast propagating crack</subject><subject>Fracture</subject><subject>Holography</subject><subject>Measurement</subject><subject>Optical engineering</subject><subject>PMMA</subject><issn>0514-5163</issn><issn>1880-7488</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1990</creationdate><recordtype>article</recordtype><recordid>eNo9kD1vwjAURa2qlYooW3-Ap26htp_j2COiX0hQUEVnyzEv1DQJqR0G_n2LqJiOdHXuHS4h95yNhSzE4y41aQxmzHleXJEB15plhdT6mgxYzmWWcwW3ZJRSKBkTQoCWZkDeF-jSIWKDbU_3FV122IZ2S59C6mrnz3mLLtIP14VNfaSruO_c1vUnaxqd_6br0NHQ0tViMbkjN5WrE47-OSSfL8_r6Vs2X77OppN5tuO55FmlYIOKaa8NCs0Kr4wRFSitJPAKDFOl9iIvQLJKgNgwlNKXYLRC48pcw5A8nHe7uP85YOptE5LHunYt7g_J_nVzYJL_ibOzuEu926LtYmhcPFoX--BrtKfXuFFgwVgpLzideHH8l4sWW_gFkGFp_g</recordid><startdate>19900815</startdate><enddate>19900815</enddate><creator>SUZUKI, Shinichi</creator><creator>KAWACHI, Masahiro</creator><creator>KATO, Munehisa</creator><creator>NAKAJIMA, Takurou</creator><general>The Society of Materials Science, Japan</general><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>19900815</creationdate><title>Measurement of Opening Displacement near Rapidly Propagating Crack Tip in PMMA</title><author>SUZUKI, Shinichi ; KAWACHI, Masahiro ; KATO, Munehisa ; NAKAJIMA, Takurou</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-j1541-f63de608c89e2807c6992f3686431f3906b8c257340f232d0e44cb3986e9ab583</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>jpn</language><creationdate>1990</creationdate><topic>COD</topic><topic>Craze</topic><topic>Fast propagating crack</topic><topic>Fracture</topic><topic>Holography</topic><topic>Measurement</topic><topic>Optical engineering</topic><topic>PMMA</topic><toplevel>online_resources</toplevel><creatorcontrib>SUZUKI, Shinichi</creatorcontrib><creatorcontrib>KAWACHI, Masahiro</creatorcontrib><creatorcontrib>KATO, Munehisa</creatorcontrib><creatorcontrib>NAKAJIMA, Takurou</creatorcontrib><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Journal of the Society of Materials Science, Japan</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>SUZUKI, Shinichi</au><au>KAWACHI, Masahiro</au><au>KATO, Munehisa</au><au>NAKAJIMA, Takurou</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Measurement of Opening Displacement near Rapidly Propagating Crack Tip in PMMA</atitle><jtitle>Journal of the Society of Materials Science, Japan</jtitle><addtitle>J. Soc. Mat. Sci., Japan</addtitle><date>1990-08-15</date><risdate>1990</risdate><volume>39</volume><issue>443</issue><spage>1157</spage><epage>1161</epage><pages>1157-1161</pages><issn>0514-5163</issn><eissn>1880-7488</eissn><abstract>Pulsed holographic microscopy was applied to take an instantaneous microscopic photograph of a rapidly propagating crack in PMMA. The crack was in the opening mode and its speed was at several hundred m/s. The crack and craze opening displacement, which are both called COD, were measured as a function of distance r from the craze tip within the region of r up to 8mm. The crack opening displacement was nearly proportional to √r, while the craze opening displacement deviated from the curve of √r. The crack tip opening displacement (CTOD) was determined from the measured COD data, and the dynamic stress intensity factor KI(v) was also obtained. Furthermore, the value of J-integral was calculated by assuming small scale yielding. It happens that cracks which have the same KI(v) value and crack speed show different COD profile in the craze layer.</abstract><pub>The Society of Materials Science, Japan</pub><doi>10.2472/jsms.39.1157</doi><tpages>5</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Journal of the Society of Materials Science, Japan, 1990/08/15, Vol.39(443), pp.1157-1161 |
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| subjects | COD Craze Fast propagating crack Fracture Holography Measurement Optical engineering PMMA |
| title | Measurement of Opening Displacement near Rapidly Propagating Crack Tip in PMMA |
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