Mode I fracture of beech-adhesive bondline at three different temperatures

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43410%2F23%3A43922264" target="_blank" >RIV/62156489:43410/23:43922264 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1080/17480272.2022.2135135" target="_blank" >https://doi.org/10.1080/17480272.2022.2135135</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/17480272.2022.2135135" target="_blank" >10.1080/17480272.2022.2135135</a>

Result language
angličtina
Original language name
Mode I fracture of beech-adhesive bondline at three different temperatures
Original language description
Single edge-notched three-point bending tests (SEN-TPB) for mode I were utilized to experimentally evaluate fracture properties of adhesive bondlines in European beech (Fagus Sylvatica L.). The bondline was examined at two anatomical planes with TR and RT orientation and at control and two elevated temperatures (70oC and 140oC). Among epoxy (EPI), melamine-urea formaldehyde (MUF), and polyurethane (PUR) adhesives, the highest average critical energy Gc with 0.80 N/mm and fracture energy Gf with 1079.4 N/mm were obtained for EPI in the TR plane and under standard climate conditions (20oC/65% relative humidity), followed by MUF (Gc = 0.50 N/mm and Gf = 620 N/mm) and PUR (Gc = 0.25 N/mm and Gf = 290.9 N/mm), respectively. PUR was least effected by elevated temperature, and no significant differences for Gc and Gf between TR and RT bondline orientations were found for MUF and PUR treated at 20oC/65% relative humidity while comparisons between other factors varied significantly. Treatment of specimens at elevated temperatures resulted in reduced fracture performance regardless of wood grain orientation or the adhesive system.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Project
<a href="/en/project/GA21-29389S" target="_blank" >GA21-29389S: Experimental and numerical assessment of the bearing capacity of notches in timber beams at arbitrary locations using LEFM</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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