Fracture Toughness Testing
Fracture Toughness Testing
(OP)
I am looking to undertake some fracture toughness testing of aluminium metal matrix composites (SiC particulate reinforcement). There are a number of test standards, ie. ASTM E399, ASTM E1820, BS 7448 etc.
Have anyone undertaken these tests and are able to advise on the pro and con of each test method and on the different specimen designs.
Thanks for your assistance.
Have anyone undertaken these tests and are able to advise on the pro and con of each test method and on the different specimen designs.
Thanks for your assistance.





RE: Fracture Toughness Testing
RE: Fracture Toughness Testing
RE: Fracture Toughness Testing
As only a comparsion is required, would simple charpy testing be a viable alternative?
RE: Fracture Toughness Testing
If they will have very low impact toughness then maybe you could use unnotched bars, of go to a bending test like they do with ceramics (4 point bending).
You don't want to prep CVN bars and have them only absorb 5 lb-ft on impact.
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube
RE: Fracture Toughness Testing
If you had a clean sheet to start, what would be the recommended test to carry out, which would require reasonable amounts of material (some of the material I have will likely require 100mm3 samples to obtain plane-strain fracture toughness).
RE: Fracture Toughness Testing
= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube
RE: Fracture Toughness Testing
RE: Fracture Toughness Testing