|Aug16-06, 07:31 AM||#1|
ductile or brittle
i force-elongation diagram, how can we know whether the material is ductile or brittle??any formula to calculate it??
|Aug16-06, 07:39 AM||#2|
They can be identify quite easily as the following:
If there is a very long section after yielding point, which we call the plastic deformation section, existing in the curve then it is ductile.
If the curve is basically just a short section of straigth line obeying Hooke's law followed by a small, short curve indicating the breaking point or UTS, then it is brittle.
|Aug16-06, 09:49 AM||#3|
Just keep in mind that the actual micromechanism of fracture is not always that straightforward to identify from a force-displacement curve, in a case where several coexist (for example brittle failure can result after quite extensive plasticity). Typical formula would be those typically related to stress-strain curves or then fracture mechanical ones (usually the former, but don't know the "level" of your problem).
|Similar Threads for: ductile or brittle|
|Heat Treating of Ductile Irons||Materials & Chemical Engineering||3|
|Question about a brittle material with a flaw||Engineering, Comp Sci, & Technology Homework||1|
|Is perfect crystal brittle?||Introductory Physics Homework||15|