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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/GA21-29389S" target="_blank" >GA21-29389S: Experimentální a numerický odhad únosnosti zářezu v nosnících z konstrukčního dřeva v obecném místě pomocí LEFM</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Wood Material Science and Engineering

ISSN

1748-0272

e-ISSN

1748-0280

Svazek periodika

18

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

1349-1359

Kód UT WoS článku

000879991300001

EID výsledku v databázi Scopus

2-s2.0-85141608215