The asymmetrical four-point bend (AFPB) method, which provides a pure shear stress state in the middle of the test specimen, was utilized to measure the shear strength of the joints between Nicalon-fibre-reinforced SiC composites. The small test specimens were prepared as butt-joints with uniform depth. It was shown experimentally that the position of loading points is critical to induce shear fracture at the joint without the failure of base material. This test method is economical and involves small test specimens with simple geometry, and can be used at high temperatures.
Origin
Ames Laboratory, Iowa, Usa
Journal Title
J Am Ceram Soc 80 5 1997 1281-1284
Sector
Glass Ceramics
Class
GC 273