Spiral Notch Torsion Fracture Toughness Test (SNTT) was developed recently to measure the intrinsic fracture toughness (KIC) of structural materials. The SNTT system operates by applying pure torsion to uniform cylindrical specimens with a notch line that spirals around the specimen at a 45° pitch. The KIC values are obtained with the aid of a three-dimensional finite-element computer code, TOR3D-KIC. The SNTT method is uniquely suitable for testing a wide variety of materials used extensively in pressure vessel and piping structural components and weldments, including others such as ceramics, their composites, graphite, concrete, and polymeric composites. The SNTT test results for some of these structural materials are demonstrated in this paper.
- Pressure Vessels and Piping Division
Spiral Notch Torsion Test Use for Determining Fracture Toughness of Structural Materials
- Views Icon Views
- Share Icon Share
- Search Site
Wang, JJ, Ren, F, & Tan, T. "Spiral Notch Torsion Test Use for Determining Fracture Toughness of Structural Materials." Proceedings of the ASME 2012 Pressure Vessels and Piping Conference. Volume 6: Materials and Fabrication, Parts A and B. Toronto, Ontario, Canada. July 15–19, 2012. pp. 119-124. ASME. https://doi.org/10.1115/PVP2012-78782
Download citation file: