## Several theories have been proposed for the failure of metals, as well as for the angle of crack propagation in mixed mode loading. In order to demonstrate the validity of these theories, the majority of tests have been carried out with an oblique crack placed in a uniaxial stress field. Better
Compact shear specimen for wood mode II fracture investigations
โ Scribed by Steven M. Cramer; Anton D. Pugel
- Publisher
- Springer Netherlands
- Year
- 1987
- Tongue
- English
- Weight
- 666 KB
- Volume
- 35
- Category
- Article
- ISSN
- 1573-2673
No coin nor oath required. For personal study only.
โฆ Synopsis
A mode II fracture specimen has been developed from experimental and numerical investigation for applications with wood. Development centered on the compact shear specimen and addressed the extreme orthotropy of both the elastic and strength properties of wood. Mode II fracture toughness was assessed from test data gathered for southern pine and Douglas-fir specimens combined with use of quarter-point singular finite elements. Evidence is provided that this specimen is suitable for investigators to employ in fracture studies with highly orthotropic materials.
๐ SIMILAR VOLUMES
New test specimens derivable from cores are proposed by the senior author. The specimen is semicircular in shape with an edge crack, subjected to three-point bending. For mode I fracture, the edge crack is cut perpendicular to the bottom edge. Kinematics of mode I specimen have been investigated. Fo
Using specimens of western hemlock with various depths, double cantilever beam and three-point bend end-notched flexure tests were conducted to obtain the mode I and mode II fracture toughness. To correct the deflection caused by shearing and crack tip deformation, four conventional data reduction m