- #1
- 11
- 0
Ive been given a question which i'm stuck on and cannot answer. Ive only been able to calculate the maximum allowable working stress and other then that im stuck on how to answer the following question:
A specimen of the same material that was used in the above test (mild steel), had a cross section of 10.5mm x 12.5mm and a length of 0.9m (900mm). On testing this specimen it was found that the ultimate tensile stress was 420 N/mm^2. Calculate:
i) the maximum load that can be carried using a Factor of Safety of 2.5
ii) the extension under this load
So what i currently have worked out is the maximum allowable working stress which is 420/2.5=168 KN/m^2 (is this right?) and the cross section area which is presume is 10.5mm x12.5mm = 131.25mm^2 (is this right too?)
Thank you in advance
A specimen of the same material that was used in the above test (mild steel), had a cross section of 10.5mm x 12.5mm and a length of 0.9m (900mm). On testing this specimen it was found that the ultimate tensile stress was 420 N/mm^2. Calculate:
i) the maximum load that can be carried using a Factor of Safety of 2.5
ii) the extension under this load
So what i currently have worked out is the maximum allowable working stress which is 420/2.5=168 KN/m^2 (is this right?) and the cross section area which is presume is 10.5mm x12.5mm = 131.25mm^2 (is this right too?)
Thank you in advance