TWA 19
High Temperature Fracture of Brittle Materials
Many advanced materials proposed for critical applications at high temperatures in power plants, aerospace, and petrochemical applications are characterised by relatively poor ductility or creep brittleness under creep conditions. Engineers being asked to design with materials with a tendency to brittleness needed appropriate data and methodologies to describe crack initiation and growth to predict component life, and to extrapolate performance at high temperatures. There were no standards for test methods to measure critical engineering design data or for guidance on the use of these data in design and component life prediction.
The objectives of the TWA were to develop a test method for creep crack growth rate for brittle metals using ASTM E 1457:15 as the starting point, and to increase the understanding of fracture processes through the mechanics and micromechanisms of material behaviour.
More information
Contact the VAMAS Secretariat - select this link