A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Using Spiral Notch Torsion Test to Evaluate Fracture Toughness of Polymeric Composites
Meeting the ASTM requirements, Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials (E399), is difficult and often impractical because structure systems materials to be investigated may be geometrically unsuitable and/or have insufficient volume for making the standard specimen. Therefore, use of small specimens for KIC measurement is essential for application to material safety surveillance as well as for advanced material development. Despite the international efforts on the development of small specimen testing techniques, no methods currently exist for direct measurement of KIC for small specimens without a concern for size effect. Spiral Notch Torsion 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 degrees pitch. The KIC values and the associated energy release rate are obtained with the aid of a three-dimensional finite-element evaluation.
Using Spiral Notch Torsion Test to Evaluate Fracture Toughness of Polymeric Composites
Meeting the ASTM requirements, Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials (E399), is difficult and often impractical because structure systems materials to be investigated may be geometrically unsuitable and/or have insufficient volume for making the standard specimen. Therefore, use of small specimens for KIC measurement is essential for application to material safety surveillance as well as for advanced material development. Despite the international efforts on the development of small specimen testing techniques, no methods currently exist for direct measurement of KIC for small specimens without a concern for size effect. Spiral Notch Torsion 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 degrees pitch. The KIC values and the associated energy release rate are obtained with the aid of a three-dimensional finite-element evaluation.
Using Spiral Notch Torsion Test to Evaluate Fracture Toughness of Polymeric Composites
J. A. Wang (author) / T. Tan (author) / H. Jiang (author)
2013
2 pages
Report
No indication
English
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