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Plastic Point in Flexure

Test ID  

Cyclic tests are performed on a material, in which the material is flexed to incrementally increasing extensions and then unloaded in between.  Imposed and residual strains are recorded.  Up to thirty extensions are used.  A strain vs. residual strain curve is generated.  Plastic point is calculated from the intersection of the two asymtotes from the pre-yield and post-yield portions of the plots.    
An elastic limit defined and a stress v. plastic strain curve is provided. This data appears in Matereality as Flexural Properties.  
Replicates (# of times this test is repeated)  
5 - flex bars [details]


This test defines a non-linear elastic limit of plastics and the subsequent plasticity or hardening curve.