Abstract
Mode I and Mode III loading experiments were performed on side grooved CT specimens of two types of Laminated Veneer Lumber (LVL). Steady state crack propagation was maintained in order to detect complete load displacement diagrams. Fracture behaviour and influence of fiber orientation were studied and all important fracture mechanical values (stiffness/compliance, microstructural damage, crack initiation energy, specific fracture energy etc) were determined. Much higher crack initiation energies and specific fracture energies resulted in mode III loading than in mode I loading for both material types. Under external mode III loading, crack initiation occurs in mode III and crack propagation however takes place under mode I owing to crack surface interference. The influence of fiber orientation on fracture mechanical properties of LVL was discussed.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received 15 September 1999
Rights and permissions
About this article
Cite this article
Frühmann, K., Tschegg, E., Dai, C. et al. Fracture behaviour of laminated veneer lumber under Mode I and III loading. Wood Science and Technology 36, 319–334 (2002). https://doi.org/10.1007/s00226-002-0142-8
Issue Date:
DOI: https://doi.org/10.1007/s00226-002-0142-8