Method for determining crack lengths
A method is provided for measuring crack growth in a solid (10) comprising a sensor utilizing potential or voltage drop measurements across a preformed and propagating crack (20). Preferably the sensor is representative of a structural component and is exposed to an aggressive environment like that...
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| creator | SOLOMON, HARVEY DONALD CATLIN, WILLIAM RAMSAY |
| description | A method is provided for measuring crack growth in a solid (10) comprising a sensor utilizing potential or voltage drop measurements across a preformed and propagating crack (20). Preferably the sensor is representative of a structural component and is exposed to an aggressive environment like that in which the structural component operates. Measured voltage values are plotted versus a distance at which the voltages are measured by a plurality of pairs of probes (26,28,30), and intercept values are obtained and used in combination with previously measured crack lengths in calculating subsequent crack lengths of a propagating crack. |
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Preferably the sensor is representative of a structural component and is exposed to an aggressive environment like that in which the structural component operates. Measured voltage values are plotted versus a distance at which the voltages are measured by a plurality of pairs of probes (26,28,30), and intercept values are obtained and used in combination with previously measured crack lengths in calculating subsequent crack lengths of a propagating crack.</description><language>eng ; fre ; ger</language><subject>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES ; MEASURING ; MEASURING ANGLES ; MEASURING AREAS ; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS ; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS ; PHYSICS ; TESTING</subject><creationdate>1990</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19900816&DB=EPODOC&CC=EP&NR=0382532A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19900816&DB=EPODOC&CC=EP&NR=0382532A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SOLOMON, HARVEY DONALD</creatorcontrib><creatorcontrib>CATLIN, WILLIAM RAMSAY</creatorcontrib><title>Method for determining crack lengths</title><description>A method is provided for measuring crack growth in a solid (10) comprising a sensor utilizing potential or voltage drop measurements across a preformed and propagating crack (20). 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Measured voltage values are plotted versus a distance at which the voltages are measured by a plurality of pairs of probes (26,28,30), and intercept values are obtained and used in combination with previously measured crack lengths in calculating subsequent crack lengths of a propagating crack.</description><subject>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES</subject><subject>MEASURING</subject><subject>MEASURING ANGLES</subject><subject>MEASURING AREAS</subject><subject>MEASURING IRREGULARITIES OF SURFACES OR CONTOURS</subject><subject>MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS</subject><subject>PHYSICS</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1990</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFDxTS3JyE9RSMsvUkhJLUktys3My8xLV0guSkzOVshJzUsvySjmYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxrgEGxhZGpsZGjobGRCgBAMEEJlg</recordid><startdate>19900816</startdate><enddate>19900816</enddate><creator>SOLOMON, HARVEY DONALD</creator><creator>CATLIN, WILLIAM RAMSAY</creator><scope>EVB</scope></search><sort><creationdate>19900816</creationdate><title>Method for determining crack lengths</title><author>SOLOMON, HARVEY DONALD ; CATLIN, WILLIAM RAMSAY</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP0382532A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>1990</creationdate><topic>INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES</topic><topic>MEASURING</topic><topic>MEASURING ANGLES</topic><topic>MEASURING AREAS</topic><topic>MEASURING IRREGULARITIES OF SURFACES OR CONTOURS</topic><topic>MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS</topic><topic>PHYSICS</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>SOLOMON, HARVEY DONALD</creatorcontrib><creatorcontrib>CATLIN, WILLIAM RAMSAY</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SOLOMON, HARVEY DONALD</au><au>CATLIN, WILLIAM RAMSAY</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Method for determining crack lengths</title><date>1990-08-16</date><risdate>1990</risdate><abstract>A method is provided for measuring crack growth in a solid (10) comprising a sensor utilizing potential or voltage drop measurements across a preformed and propagating crack (20). Preferably the sensor is representative of a structural component and is exposed to an aggressive environment like that in which the structural component operates. Measured voltage values are plotted versus a distance at which the voltages are measured by a plurality of pairs of probes (26,28,30), and intercept values are obtained and used in combination with previously measured crack lengths in calculating subsequent crack lengths of a propagating crack.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TESTING |
| title | Method for determining crack lengths |
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