Proposed mixed-mode dynamic fracture toughness testing method using a new specimen
- Daido Institute of Technology, Nagoya (Japan)
- Oregon State Univ., Corvallis, OR (United States)
To find a simple and highly accurate testing method for determining the mixed-mode dynamic fracture toughness in a wide range of ratio of opening and sliding modes, the authors applied a combination technique using an electrical resistance strain gage method and a dynamic finite element method (FEM) to determine the mixed-mode dynamic fracture toughness. They used measuring and recording devices associated with an impact fracture apparatus based on an air gun. The impact fracture test was conducted to assess the mixed-mode dynamic fracture toughness testing method under single-point bending for three specimens of polymethyl methacrylate (PMMA). The ratio of the opening mode deformation to the sliding mode can be changed by adjusting the hitting point. To measure a dynamic stress intensity factors (SIF) K{sub 1}(t) and a crack initiation time, a single axis strain gage was mounted in the vicinity of the crack tip.
- OSTI ID:
- 563624
- Report Number(s):
- CONF-9606176--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Impact elastic-plastic fracture toughness of mild steel
Dynamic fracture toughness of ceramic composites