Thermographic detection of fatigue damage of pressure vessel steels at 1,000 Hz and 20 Hz
A thermographic infrared detection system has been used to measure the temperature profiles during fatigue testing of specimens of reactor pressure vessel steels at 1000 Hz and 20 Hz. Four stages of temperature profiles were observed during fatigue testing: an initial increase of the average specime...
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| Veröffentlicht in: | Scripta materialia 2000-01, Vol.42 (4), p.389-395 |
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| container_title | Scripta materialia |
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| creator | Liaw, P.K Wang, H Jiang, L Yang, B Huang, J.Y Kuo, R.C Huang, J.G |
| description | A thermographic infrared detection system has been used to measure the temperature profiles during fatigue testing of specimens of reactor pressure vessel steels at 1000 Hz and 20 Hz. Four stages of temperature profiles were observed during fatigue testing: an initial increase of the average specimen temperature, an equilibrium-temperature region, an abrupt increase of the temperature, and a drop of the temperature following specimen failure. Temperature oscillation was observed within each fatigue cycle. An image subtraction technique in the infrared detection system can be used to monitor crack initiation and propagation behavior. At 1000 Hz, the equilibrium temperature can reach > 95 deg C, depending on the applied maximum stress level, while at 20 Hz, it approachs only approx23-24 deg C. The much greater temperature generated at 1000 Hz than 20 Hz could contribute to the shorter fatigue life at 1000 Hz. |
| doi_str_mv | 10.1016/S1359-6462(99)00358-9 |
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Four stages of temperature profiles were observed during fatigue testing: an initial increase of the average specimen temperature, an equilibrium-temperature region, an abrupt increase of the temperature, and a drop of the temperature following specimen failure. Temperature oscillation was observed within each fatigue cycle. An image subtraction technique in the infrared detection system can be used to monitor crack initiation and propagation behavior. At 1000 Hz, the equilibrium temperature can reach > 95 deg C, depending on the applied maximum stress level, while at 20 Hz, it approachs only approx23-24 deg C. 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Four stages of temperature profiles were observed during fatigue testing: an initial increase of the average specimen temperature, an equilibrium-temperature region, an abrupt increase of the temperature, and a drop of the temperature following specimen failure. Temperature oscillation was observed within each fatigue cycle. An image subtraction technique in the infrared detection system can be used to monitor crack initiation and propagation behavior. At 1000 Hz, the equilibrium temperature can reach > 95 deg C, depending on the applied maximum stress level, while at 20 Hz, it approachs only approx23-24 deg C. The much greater temperature generated at 1000 Hz than 20 Hz could contribute to the shorter fatigue life at 1000 Hz.</description><subject>Applied sciences</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Exact sciences and technology</subject><subject>FATIGUE</subject><subject>FREQUENCY DEPENDENCE</subject><subject>Infrared (IR) spectroscopy</subject><subject>INFRARED RADIATION</subject><subject>MARTENSITE</subject><subject>MATERIALS SCIENCE</subject><subject>Materials testing</subject><subject>Metals. Metallurgy</subject><subject>Nondestructive evaluation</subject><subject>Nondestructive testing: electromagnetic testing, eddy-current testing</subject><subject>Physics</subject><subject>PRESSURE VESSELS</subject><subject>STEELS</subject><subject>THERMOGRAPHY</subject><issn>1359-6462</issn><issn>1872-8456</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><recordid>eNqFkE9LxDAQxYsoqKsfQQgoomA1k7RpcxIR_4Hgwb14Cmky3Y10mzXpCvrpTV3Fo6cZht_Me_Oy7ADoOVAQF8_AS5mLQrATKU8p5WWdy41sB-qK5XVRis3U_yLb2W6Mr5RSAQx2spfpHMPCz4Jezp0hFgc0g_M98S1p9eBmKyRWL_QMx8kyYIyrgOQ9VexIHBC7SPRA4CydJPefRPeWsLHby7Za3UXc_6mTbHp7M72-zx-f7h6urx5zUwgY8lo0bcMlUKYtA1pxYZvCNrwByQE0Y5ILIWULBasYao28bCpraANNbWnJJ9nh-qyPg1PRuPTA3Pi-T38oRimUDEbqeE0tg39bYRzUwkWDXad79KuoWFXVICuZwHINmuBjDNiqZXALHT4UUDWmrb7TVmOUSkr1nbYa945-BHQ0umuD7o2Lf8usTgo0YZdrLMWG7w7D6Bh7g9aF0bD17h-hL_l3kRE</recordid><startdate>20000131</startdate><enddate>20000131</enddate><creator>Liaw, P.K</creator><creator>Wang, H</creator><creator>Jiang, L</creator><creator>Yang, B</creator><creator>Huang, J.Y</creator><creator>Kuo, R.C</creator><creator>Huang, J.G</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>OTOTI</scope></search><sort><creationdate>20000131</creationdate><title>Thermographic detection of fatigue damage of pressure vessel steels at 1,000 Hz and 20 Hz</title><author>Liaw, P.K ; Wang, H ; Jiang, L ; Yang, B ; Huang, J.Y ; Kuo, R.C ; Huang, J.G</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c461t-86bfb39102ad210736db4db3b19311a22936699f14272eaae35b7dc0b1b8d053</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Applied sciences</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Exact sciences and technology</topic><topic>FATIGUE</topic><topic>FREQUENCY DEPENDENCE</topic><topic>Infrared (IR) spectroscopy</topic><topic>INFRARED RADIATION</topic><topic>MARTENSITE</topic><topic>MATERIALS SCIENCE</topic><topic>Materials testing</topic><topic>Metals. Metallurgy</topic><topic>Nondestructive evaluation</topic><topic>Nondestructive testing: electromagnetic testing, eddy-current testing</topic><topic>Physics</topic><topic>PRESSURE VESSELS</topic><topic>STEELS</topic><topic>THERMOGRAPHY</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liaw, P.K</creatorcontrib><creatorcontrib>Wang, H</creatorcontrib><creatorcontrib>Jiang, L</creatorcontrib><creatorcontrib>Yang, B</creatorcontrib><creatorcontrib>Huang, J.Y</creatorcontrib><creatorcontrib>Kuo, R.C</creatorcontrib><creatorcontrib>Huang, J.G</creatorcontrib><creatorcontrib>Univ. of Tennessee, Knoxville, TN (US)</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>OSTI.GOV</collection><jtitle>Scripta materialia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liaw, P.K</au><au>Wang, H</au><au>Jiang, L</au><au>Yang, B</au><au>Huang, J.Y</au><au>Kuo, R.C</au><au>Huang, J.G</au><aucorp>Univ. of Tennessee, Knoxville, TN (US)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Thermographic detection of fatigue damage of pressure vessel steels at 1,000 Hz and 20 Hz</atitle><jtitle>Scripta materialia</jtitle><date>2000-01-31</date><risdate>2000</risdate><volume>42</volume><issue>4</issue><spage>389</spage><epage>395</epage><pages>389-395</pages><issn>1359-6462</issn><eissn>1872-8456</eissn><abstract>A thermographic infrared detection system has been used to measure the temperature profiles during fatigue testing of specimens of reactor pressure vessel steels at 1000 Hz and 20 Hz. Four stages of temperature profiles were observed during fatigue testing: an initial increase of the average specimen temperature, an equilibrium-temperature region, an abrupt increase of the temperature, and a drop of the temperature following specimen failure. Temperature oscillation was observed within each fatigue cycle. An image subtraction technique in the infrared detection system can be used to monitor crack initiation and propagation behavior. At 1000 Hz, the equilibrium temperature can reach > 95 deg C, depending on the applied maximum stress level, while at 20 Hz, it approachs only approx23-24 deg C. The much greater temperature generated at 1000 Hz than 20 Hz could contribute to the shorter fatigue life at 1000 Hz.</abstract><cop>New York, NY</cop><pub>Elsevier Ltd</pub><doi>10.1016/S1359-6462(99)00358-9</doi><tpages>7</tpages></addata></record> |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Applied sciences Cross-disciplinary physics: materials science rheology Exact sciences and technology FATIGUE FREQUENCY DEPENDENCE Infrared (IR) spectroscopy INFRARED RADIATION MARTENSITE MATERIALS SCIENCE Materials testing Metals. Metallurgy Nondestructive evaluation Nondestructive testing: electromagnetic testing, eddy-current testing Physics PRESSURE VESSELS STEELS THERMOGRAPHY |
| title | Thermographic detection of fatigue damage of pressure vessel steels at 1,000 Hz and 20 Hz |
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