Abstract
Analysis of fracture toughness of modified timber This paper presents results of fracture toughness tests on DCB specimens made of natural and modified pine wood. The energy release coefficients Ga were calculated for both the materials under TL and RL crack propagation modes and the 1st mode of loading. Relations between the energy release coeffcients GaI and the stress intensity factors KaI have been determined. The obtained test results are presented in the form of tables and diagrams.
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