Modulus of elasticity in scarf-jointed wooden beams: a case study with polyvinyl acetate and isocyanate adhesives
In the present study, elastic properties of scarf-jointed oak (Quercus castaneifolia) timbers with the application of two different types of adhesives (polyvinyl acetate and isocyanate) were evaluated using free flexural vibration of free–free beam method in different flexural directions of vibratio...
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| Veröffentlicht in: | Journal of wood science 2014-10, Vol.60 (5), p.321-326 |
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| creator | Roohnia, Mehran Hemmasi, Amirhooman Yavari, Ali Khademieslam, Habibolla Bazyar, Behzad |
| description | In the present study, elastic properties of scarf-jointed oak (Quercus castaneifolia) timbers with the application of two different types of adhesives (polyvinyl acetate and isocyanate) were evaluated using free flexural vibration of free–free beam method in different flexural directions of vibration, i.e., tangential and redial directions. Samples were taken from trees of Hyrcanian forests in Iran with nominal dimensions of 20 × 20 × 360 mm³. Comparing the results of elastic properties of clear oak wood beams with scarf-jointed samples wood showed that scarf joints with the bonding angles of 70° and 75°, covered by polyvinyl acetate adhesive, did not demonstrate any significant effect on modules of elasticity. Scarf-jointed beams with smaller joint angles (60° and 65°) were considerably weaker or totally unreliable in their moduli of elasticity. It is also shown that the magnitude of effect gets worst by using isocyanate rather than polyvinyl acetate adhesive. |
| doi_str_mv | 10.1007/s10086-014-1413-3 |
| format | Article |
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Samples were taken from trees of Hyrcanian forests in Iran with nominal dimensions of 20 × 20 × 360 mm³. Comparing the results of elastic properties of clear oak wood beams with scarf-jointed samples wood showed that scarf joints with the bonding angles of 70° and 75°, covered by polyvinyl acetate adhesive, did not demonstrate any significant effect on modules of elasticity. Scarf-jointed beams with smaller joint angles (60° and 65°) were considerably weaker or totally unreliable in their moduli of elasticity. It is also shown that the magnitude of effect gets worst by using isocyanate rather than polyvinyl acetate adhesive.</description><identifier>ISSN: 1435-0211</identifier><identifier>EISSN: 1611-4663</identifier><identifier>DOI: 10.1007/s10086-014-1413-3</identifier><language>eng</language><publisher>Tokyo: Springer-Verlag</publisher><subject>acetates ; Adhesion tests ; Adhesive joints ; Adhesives ; Biomedical and Life Sciences ; Bonded joints ; case studies ; Characterization and Evaluation of Materials ; Elastic properties ; Elasticity ; forests ; Isocyanates ; Life Sciences ; Materials Science ; Modulus of elasticity ; Original Article ; Polyvinyl acetates ; Quercus ; Scarf joints ; trees ; Vibration ; Wood ; wood beams ; Wood Science & Technology</subject><ispartof>Journal of wood science, 2014-10, Vol.60 (5), p.321-326</ispartof><rights>The Japan Wood Research Society 2014</rights><rights>Journal of Wood Science is a copyright of Springer, (2014). 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Samples were taken from trees of Hyrcanian forests in Iran with nominal dimensions of 20 × 20 × 360 mm³. Comparing the results of elastic properties of clear oak wood beams with scarf-jointed samples wood showed that scarf joints with the bonding angles of 70° and 75°, covered by polyvinyl acetate adhesive, did not demonstrate any significant effect on modules of elasticity. Scarf-jointed beams with smaller joint angles (60° and 65°) were considerably weaker or totally unreliable in their moduli of elasticity. It is also shown that the magnitude of effect gets worst by using isocyanate rather than polyvinyl acetate adhesive.</description><subject>acetates</subject><subject>Adhesion tests</subject><subject>Adhesive joints</subject><subject>Adhesives</subject><subject>Biomedical and Life Sciences</subject><subject>Bonded joints</subject><subject>case studies</subject><subject>Characterization and Evaluation of Materials</subject><subject>Elastic properties</subject><subject>Elasticity</subject><subject>forests</subject><subject>Isocyanates</subject><subject>Life Sciences</subject><subject>Materials Science</subject><subject>Modulus of elasticity</subject><subject>Original Article</subject><subject>Polyvinyl acetates</subject><subject>Quercus</subject><subject>Scarf joints</subject><subject>trees</subject><subject>Vibration</subject><subject>Wood</subject><subject>wood beams</subject><subject>Wood Science & Technology</subject><issn>1435-0211</issn><issn>1611-4663</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp9kMtO3jAQhaMKpALlAbqqJdamnti5dYdQWyqBWBTW1sSZgH-F-MfjgPL2mKZSd93MRTrnzOgris-gzkGp5ivn2tZSgZFgQEv9oTiCGkCautYHeTa6kqoE-FgcM-9UHk2jj4rnmzAs08IijIIm5OSdT6vws2CHcZS74OdEg3gNYaBZ9IRP_E2gcMgkOC3DKl59ehT7MK0vfl4ngY4SJhI4D8JzcCvOf9bhkdi_EH8qDkecmE7_9pPi_sf3u8sreX3789flxbV0RlVJ9k6NRncd9miMaU3XtVhWqulHIiRT9UNZgmoa7DusgCoEhQ0Zp7RGrQanT4qzLXcfw_NCnOwuLHHOJ21ZVp2GplVtVsGmcjEwRxrtPvonjKsFZd_J2o2szWTtO1mrs6fcPJy18wPFf8n_M33ZTCMGiw_Rs73_XWaBUtDWkB96A5fMhhM</recordid><startdate>20141001</startdate><enddate>20141001</enddate><creator>Roohnia, Mehran</creator><creator>Hemmasi, Amirhooman</creator><creator>Yavari, Ali</creator><creator>Khademieslam, Habibolla</creator><creator>Bazyar, Behzad</creator><general>Springer-Verlag</general><general>Springer Japan</general><general>Springer Nature B.V</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>L6V</scope><scope>M7S</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope></search><sort><creationdate>20141001</creationdate><title>Modulus of elasticity in scarf-jointed wooden beams: a case study with polyvinyl acetate and isocyanate adhesives</title><author>Roohnia, Mehran ; 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Samples were taken from trees of Hyrcanian forests in Iran with nominal dimensions of 20 × 20 × 360 mm³. Comparing the results of elastic properties of clear oak wood beams with scarf-jointed samples wood showed that scarf joints with the bonding angles of 70° and 75°, covered by polyvinyl acetate adhesive, did not demonstrate any significant effect on modules of elasticity. Scarf-jointed beams with smaller joint angles (60° and 65°) were considerably weaker or totally unreliable in their moduli of elasticity. It is also shown that the magnitude of effect gets worst by using isocyanate rather than polyvinyl acetate adhesive.</abstract><cop>Tokyo</cop><pub>Springer-Verlag</pub><doi>10.1007/s10086-014-1413-3</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | acetates Adhesion tests Adhesive joints Adhesives Biomedical and Life Sciences Bonded joints case studies Characterization and Evaluation of Materials Elastic properties Elasticity forests Isocyanates Life Sciences Materials Science Modulus of elasticity Original Article Polyvinyl acetates Quercus Scarf joints trees Vibration Wood wood beams Wood Science & Technology |
| title | Modulus of elasticity in scarf-jointed wooden beams: a case study with polyvinyl acetate and isocyanate adhesives |
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