Temperature dependence of hydrothermal ageing of CSM-laminate during water immersion
Random glass fibre reinforced polyester resin specimens were exposed to hot water at different temperatures. Effects of the environmental history on strength characteristics of the composite were investigated using the three-point bend tests. The study shows that reduction of the strength of random-...
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| Veröffentlicht in: | Composites science and technology 1987, Vol.29 (2), p.79-87 |
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| container_title | Composites science and technology |
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| creator | Phani, K.K. Bose, N.R. |
| description | Random glass fibre reinforced polyester resin specimens were exposed to hot water at different temperatures. Effects of the environmental history on strength characteristics of the composite were investigated using the three-point bend tests. The study shows that reduction of the strength of random-fibre composites due to hydrothermal effects is a rate process for which the temperature influences only the rate constant. The rate constant follows the Arrhenius equation
1/τ = 1/τ
0 exp [−E/RT], where 1/τ
is the rate constant, E and R are activation energy and gas constant respectively;
τ
0
is a constant and T is absolute temperature. The time/temperature superposition principle is applicable for the degradation process and a master curve for strength can be obtained by shifting the data along the logarithmic time scale by a shift distance, ln a
D. This allows the estimation of strength at any temperture from experiments conducted only at one temperature. |
| doi_str_mv | 10.1016/0266-3538(87)90050-9 |
| format | Article |
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1/τ = 1/τ
0 exp [−E/RT], where 1/τ
is the rate constant, E and R are activation energy and gas constant respectively;
τ
0
is a constant and T is absolute temperature. The time/temperature superposition principle is applicable for the degradation process and a master curve for strength can be obtained by shifting the data along the logarithmic time scale by a shift distance, ln a
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1/τ = 1/τ
0 exp [−E/RT], where 1/τ
is the rate constant, E and R are activation energy and gas constant respectively;
τ
0
is a constant and T is absolute temperature. The time/temperature superposition principle is applicable for the degradation process and a master curve for strength can be obtained by shifting the data along the logarithmic time scale by a shift distance, ln a
D. This allows the estimation of strength at any temperture from experiments conducted only at one temperature.</description><subject>Applied sciences</subject><subject>Exact sciences and technology</subject><subject>Forms of application and semi-finished materials</subject><subject>Polymer industry, paints, wood</subject><subject>Reinforced plastics</subject><subject>Technology of polymers</subject><issn>0266-3538</issn><issn>1879-1050</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1987</creationdate><recordtype>article</recordtype><recordid>eNp9kD1PwzAQhi0EEqXwDxgyIARDwE6cOF6QUMWXVMRAma2rfWmN8oWdgPrvcWjVEXmwfXreO91DyDmjN4yy_JYmeR6nWVpcFeJaUprRWB6QCSuEjFn4HZLJHjkmJ95_UkpFJpMJWSyw7tBBPziMDHbYGGw0Rm0ZrTfGtf0aXQ1VBCu0zWosz95f4wpq20AfEoMbyz_h7SJb1-i8bZtTclRC5fFsd0_Jx-PDYvYcz9-eXmb381inOe_jzEAmSmmgyIzMZal5wZJU5nTJdSISqZcZF1znwJlgDCgYxmRqkGaAS8qLdEout307134N6HtVW6-xqqDBdvAq4WFJTlkA-RbUrvXeYak6Z2twG8WoGhWq0Y8a_ahCqD-FSobYxa4_eA1V6aDR1u-zIhV5OAG722IYdv226JTXdrRorEPdK9Pa_-f8AtimhPs</recordid><startdate>1987</startdate><enddate>1987</enddate><creator>Phani, K.K.</creator><creator>Bose, N.R.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>1987</creationdate><title>Temperature dependence of hydrothermal ageing of CSM-laminate during water immersion</title><author>Phani, K.K. ; Bose, N.R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c364t-5da57f9da85d969fc48123960b4c2729cb5474c6a41711a0ad1193de05aeb0483</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1987</creationdate><topic>Applied sciences</topic><topic>Exact sciences and technology</topic><topic>Forms of application and semi-finished materials</topic><topic>Polymer industry, paints, wood</topic><topic>Reinforced plastics</topic><topic>Technology of polymers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Phani, K.K.</creatorcontrib><creatorcontrib>Bose, N.R.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Composites science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Phani, K.K.</au><au>Bose, N.R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Temperature dependence of hydrothermal ageing of CSM-laminate during water immersion</atitle><jtitle>Composites science and technology</jtitle><date>1987</date><risdate>1987</risdate><volume>29</volume><issue>2</issue><spage>79</spage><epage>87</epage><pages>79-87</pages><issn>0266-3538</issn><eissn>1879-1050</eissn><coden>CSTCEH</coden><abstract>Random glass fibre reinforced polyester resin specimens were exposed to hot water at different temperatures. Effects of the environmental history on strength characteristics of the composite were investigated using the three-point bend tests. The study shows that reduction of the strength of random-fibre composites due to hydrothermal effects is a rate process for which the temperature influences only the rate constant. The rate constant follows the Arrhenius equation
1/τ = 1/τ
0 exp [−E/RT], where 1/τ
is the rate constant, E and R are activation energy and gas constant respectively;
τ
0
is a constant and T is absolute temperature. The time/temperature superposition principle is applicable for the degradation process and a master curve for strength can be obtained by shifting the data along the logarithmic time scale by a shift distance, ln a
D. This allows the estimation of strength at any temperture from experiments conducted only at one temperature.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/0266-3538(87)90050-9</doi><tpages>9</tpages></addata></record> |
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| ispartof | Composites science and technology, 1987, Vol.29 (2), p.79-87 |
| issn | 0266-3538 1879-1050 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_24759401 |
| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Exact sciences and technology Forms of application and semi-finished materials Polymer industry, paints, wood Reinforced plastics Technology of polymers |
| title | Temperature dependence of hydrothermal ageing of CSM-laminate during water immersion |
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