Pipeline Tensile Strength
Pipeline Tensile Strength
(OP)
In ramber-osgood (nonlinear stress-strain) for pipeline modelling by FEA, to calculate the ramberg-osgood coefficients i need to get TENSILE STRAIN at tesile strength. How can i get TENSILE STRENGTH?, (this is at design stage and mill data is not available yet)
(NB, for ramberg osgood coefficient calculation, the required yield strain at yield strength is gotten 0.5% as per API 5L)
(NB, for ramberg osgood coefficient calculation, the required yield strain at yield strength is gotten 0.5% as per API 5L)





RE: Pipeline Tensile Strength
http://www.woodcousa.com/line_pipe_properties.htm
Note that these properties are for a maximum temperature of 120F. You should consult your design code for property reduction requirements at other temperatures.
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Pipeline Tensile Strength
In addition, for API grades anyway, the yield strength is defined by the Extension Under Load (EUL) Method, or the stress at a specified tensile strain. For the lower grades, a strain of 0.005 is used, but this might be increased if using grades with a yield strength above around 90 KSI. The end result is that if the grade you are using is defined with a yeild strength determined at 0.5%, then the "Tensile Strain at Tensile Strength" would be 0.005.
rp
RE: Pipeline Tensile Strength
Yes, in API5L for various materials, the tensile strength is specified, but tensile strain is not pointed out!, in case of any address please advise the reference. (it is in design stage and the pipe mill data is unavailable)
(0.5% strain is defined as yield strain in API5L, and i d like to know if there is such a definition for tensile strain too).
RE: Pipeline Tensile Strength
RE: Pipeline Tensile Strength
I had noted to App. D (API 5L, 2000, i do not have updated edition) it is Elongation Table.
Elongation value is the strain in which the sample (50.8mm prototype) will rupture. In Stress-Strain curve, tensile points and rupture points are different.
However, do you mean that tensile strain can be assumed the same as rupture strain (i.e. elongation)?