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Licensed Unlicensed Requires Authentication Published by De Gruyter February 7, 2017

Static and dynamic tensile shear test of glued lap wooden joint with four different types of adhesives

  • Erik V. Bachtiar EMAIL logo , Gaspard Clerc , Andreas J. Brunner , Michael Kaliske and Peter Niemz
From the journal Holzforschung


Investigations of quasi-static and fatigue failure in glued wooden joints subjected to tensile shear loading are presented. Lap joints of beech wood (Fagus sylvatica L.) connected with four different types of adhesives, i.e. polyurethane (PUR), melamine urea formaldehyde (MUF), bone glue and fish glue, were experimentally tested until the specimens failed. The average shear strengths obtained from the quasi-static test ranged from 12.2 to 13.4 MPa. These results do not indicate any influence of the different adhesive types. The influence of the adhesives is only visible from the results of the fatigue tests, which were carried out under different stress excitation levels between 45% and 75% of the shear strength. Specimens bound with ductile adhesive (PUR) showed a slightly higher number of cycles to failure (Nf) at low-stress levels and lower Nf at high-stress levels in comparison to more brittle adhesives (MUF, fish glue). In general, the performances of animal glues and MUF were similar in both quasi-static and fatigue loading under dry conditions.


Special acknowledgement is attributed to Deutsche Forschungsgemeinschaft (DFG, project no. KA 1163/25) and Swiss National Science Foundation (SNF, project no. 14762) for the funding of this study.


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Received: 2016-9-16
Accepted: 2017-1-5
Published Online: 2017-2-7
Published in Print: 2017-5-1

©2017 Walter de Gruyter GmbH, Berlin/Boston

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