The fracture toughness of wood in compact specimens (CT specimens) tested for off-center tension
- Moscow State Civil Engineering Univ. (Russian Federation)
The application of fracture mechanics methods in the design of building construction requires reliable knowledge of material crack resistance characteristics. At present, no standard test techniques for crack resistance in wood materials have been developed. In testing wood for crack resistance, it has been recommended that single-notched beam specimens (of the SENB type) subjected to three-point bending be used. The recommended method is rather simple; however, it has disadvantages that impair its accuracy. In particular, errors may arise from not directly accounting for the proper mass of a specimen. To evaluate these errors and to lend support to our previous results obtained on beam specimens, we tested compact specimens for off-center tension. Methods for determining the crack resistance characteristics (G{sub Ic,}, G{sub IF}, K{sub Ic}) of compact wood specimens (CT-specimens), tested for off-center tension, are described. The behavior of the fracture energy G{sub IF} during crack propagation is discussed.
- OSTI ID:
- 146900
- Journal Information:
- Industrial Laboratory, Vol. 61, Issue 1; Other Information: PBD: Jul 1995; TN: Translated from Zavodskaya Laboratoriya; 61: No. 1, 33-38(Jan 1995)
- Country of Publication:
- United States
- Language:
- English
Similar Records
SUBCRITICAL CRACK PROPAGATION STUDIES IN HI-NICALON AND HI-NICALON TYPE-S FIBER SiC/SiC COMPOSITES USING COMPACT TENSION SPECIMENS
Evaluation of fracture toughness (J/sub IC/) using single specimen fracture test augmented by finite element analysis