The tests were conducted using a universal testing machine. Two rollers placed either side of the shell reduce the diameter. The materials come in different pallets. The first pallets material gets formed correctly, except for the other three.
1) Yield Strength= 244 MPa
Ultimate tensile...
By material change I mean I checked the mechanical properties of the material and the young's modulus varies from 15000 MPa to 22000 MPa. All else remains same. I haven't checked the strain hardening of the material. I just want to confirm whether my hunch is right and whether I should contact...
Sorry guys if I wasn't too elaborative. The crimps you see in the picture are the abnormal deformation. I know there is something wrong with this material because I have changed machines and this same problem arises and when I change the material this problem goes away. There is no issue with...
This shell made by metal spinning keeps deforming and I do not know why. There is no problem in the tooling. It is an issue with the material. I do not which mechanical property is the root cause. % elongation 38.4%, maximum tensile strength 426 MPa and yield strength 266.9 MPa. All three...
