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  1. Dan Codrut

    Thermal expansion coefficient input- user defined material

    Hello, How can one find the value that should be inserted in the temp input field to define the thermal behavior of a material (say 15128 steel, i.e. Cr-Mo-V, Czech norm CSN 415128-86), knowing the S.I. value of the thermal expansion coefficient (at 550 deg C - 14.85*10^6 1/K - norm value)...
  2. Dan Codrut

    SFRC factor for 250000 h - problem in finding the design stress

    I think that is what I'm going to do, since i couldn't find any other design code that could give any info on how one may verify/ design pipelines that worked/should work for that huge amount of time. US standards (ASME, API) only go as far as 100000h of lifetime. I think that says allot about...
  3. Dan Codrut

    SFRC factor for 250000 h - problem in finding the design stress

    Hello, How can i find the design stress in the creep range for a superheated steam pipeline that exceeded 200000h of operation? I have the mean value of creep rupture strength (SRTt)at 250000h operating time (given by the material norm), but EN 13480 gives no factor for finding the design...
  4. Dan Codrut

    operating case allowable stress

    Hmmm, Somebody said to me once that "0" is the best beginning... You are right,assuming responsibility for such an application in "my position" (no expertize whatsoever in the field of stress analysis), would be at least a proof of great suicidal courage. This pipe line that has been...
  5. Dan Codrut

    operating case allowable stress

    Thank you very much sir.
  6. Dan Codrut

    operating case allowable stress

    I am conducting a flexibility stress analysis on a superheated steam pipe designed at 525 deg C and 110 bar. The computations are done following the B31.1 code. I have encouterded some problems in finding the theory and formulas behind computations the software does in the operating case...
  7. Dan Codrut

    operating case in pipepak

    I am conducting a flexibility stress analysis using pipepak from algor on a superheated pipe designed at 525 deg C and 110 bar. The computations are done following the B31.1 code. I have encouterded some problems in finding the theory and formulas behind computations the software does in the...

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