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  • Users: stel8
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  1. stel8

    12.5% tolerance

    Could anyone explain why this tolerance value is applied to the pipe wall thickness or diameter? Does it apply to cast pipe, as well? Thank you.
  2. stel8

    B31 Coefficient y for Pipe Thickness Calculation

    I am also interested in Y value for ferritic cast iron pipe according to B31.1 and B31.3, latest version. Anyone, please with an answer!
  3. stel8

    Vibratory bowl feeders

    I am looking for formulas and recommendations for design of a Vibratory Bowl Feeder. Please indicate any literature on topic. Thank you very much.
  4. stel8

    Fine line of intellectual property

    Thank you all. Good info and advice.
  5. stel8

    Fine line of intellectual property

    An employee intends to quit and start his own business. He accumulated knowledge at work and has ideas that are not used by his employer. His new company will compete directly with his present employer, especially with new products based on these ideas. What is illegal and what is unethical in...
  6. stel8

    Eng. postgrad education - comparison

    I am trying to compare post grad education in engineering in different countries. I am familiar with the American/Canadian model of B.Eng (defined by ABET/CCPE and structured for large group of students) followed a M.Eng (specialized and individual). Is it an European or Japonez model? Any...
  7. stel8

    12L14 too hard

    The part is a ring and deformation is simply upsetting the ring to about half of its height. It's the ring test for lubricants.
  8. stel8

    12L14 too hard

    I have small parts made from 12L14 cold drawn with hardness about 90HRB. What can I do to soften the material which will be deformed to a lower height. Would heat treatment be influenced by the lead from the material? Thanks a lot for your help.
  9. stel8

    Fast threads

    I am looking for special threads used for quick opening of jars, bottles, etc. I am interested in standards and specifications, and also in calculations of forces, friction, etc, for different materials with such threads. Thanks for any ideas.
  10. stel8

    ring compression test for friction coefficient

    I was not clear enough. I am interested in compression test for metal forming operation. The test was developed by Avitzur and continued by Male and Cockcroft. Thx for info and sorry for confusion.
  11. stel8

    ring compression test for friction coefficient

    I am interested in more info, especially the formulas to draw the curves for friction coefficient. Thank you very much for your reply. sgc
  12. stel8

    International competition

    For more countries look at: http://rru.worldbank.org/DoingBusiness/FAQ.aspx The study is for sale but under "Comparative Data" it is possible to get some info.
  13. stel8

    Tension Testing "Sampling Plan"

    If you only need to compare those two or three treatments (untouched, after melt, and after diffusion) ANOVA seems like the best method to find out if there is any significant difference between treatments. The larger the number of tests (if you can afford it), the better. Once the experiment...
  14. stel8

    National PE License?

    Aside all the little problems (state vs feds), would it be nice to have a general licence that allows to practice where you go? Nothing can prevent local organizations to include specifics in the general practice (seismics, electrical, safety). After all we travel and practice on the entire...
  15. stel8

    Snap Closure Spec's

    This will make you happy: http://www.rpi.edu/dept/mane/deptweb/student/snapfit/index2.htm
  16. stel8

    Software to calculate snaps

    This will help: http://www.ets-corp.com/tools/development.htm
  17. stel8

    Snap Closure Spec's

    this will make you very happy: http://www.rpi.edu/dept/mane/deptweb/student/snapfit/index2.htm
  18. stel8

    Snap Closure Spec's

    google.com got this site: http://www.engineersedge.com/snap_fit_straight.htm It does not look like your application but it is a start.
  19. stel8

    Snap Closure Spec's

    Two books are probably the best in this field: 1. Tres Paul - Designing plastic parts for assembly, Hanser Publishing, ISBN 1569901996, 1995 2. Bonenberger Paul - The first snap-fit handdbook, Hanser Publishing, ISBN 1569902798, 2000 Both have examples and calculations for snap-fit closures...
  20. stel8

    Will online degrees ever reach high status in the US?

    CGR is correct. How would you compare a weak in-class program compared by a well-designed and delivered distance program?

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