Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: WIM32
  • Order by date
  1. WIM32

    Moving to the US

    Thanks all, for your interesting comments and advise. Looks like corporate interests are converging towards settling down in the Dallas, TX area.. Seems not like the best place to live, but there must be some nice communities there as well. By the way, is it common practice to rent furnished homes?
  2. WIM32

    Moving to the US

    Thanks guys for the helpful responses. FYI, our company provides products and services for the semiconductor industry, therefore TI, Freescale etc.-> Texas, IBM / Micron / Infineon -> east-coast, Intel etc.-> Oregon, Arizona. On the other hand, we'll be looking for engineering and manufacturing...
  3. WIM32

    Moving to the US

    Hi all, I've been asked by my current employer to start up a branch office in the US. Our (potential) customers are based all over the place, the East-coast (Virginia to NY), Texas, Arizona and Oregon. We still need to define where our HQ will be, and this will also affect my future living...
  4. WIM32

    Pre-tension rebar codes?

    Hi all, I have a question wrt a code combination that I've found on an old report (the company that wrote the report no longer exits) about a hollow slab (1.2x4.8x0.2 meters). It states the following codes which refer to a allowable moment: 0.4.0.0. 48.26 kNm 0.5.0.0. 54.43 kNm...
  5. WIM32

    Wind turbine towers

    I have a question regarding the height of wind turbine towers. As I understand, the bigger turbines (1-2.5MW) currently operate (in Europe) at around 70-100 meters. Now I've read somewhere that at a higher operating height, the wind speed, thus the operating power, is greater. The problem is to...
  6. WIM32

    Transporting measurement devices

    sms: We are operating out of the Netherlands. The airlines let us check the equipment, but at customs, they pick them out of the line to open the luggage and then they have to explain what is inside (sometimes, they even had to do an actual measurement of the office floor!). Most of the times...
  7. WIM32

    Transporting measurement devices

    Hello all, I have a non-technical question, but since there is much experience with measurement equipment available in the forum, maybe you can help me out. Our engineers travel around the world with measurement equipment (analyser, sensors and impact hammer). Since we do not have over-capacity...
  8. WIM32

    Modal analysis software

    Hi, I'm looking for a good software package, suitable for modal analysis. We currently use Iotech wavebooks (8 ch) and PCB ICP sensors. Signal analysis is done with Dasylab. Any advice? thanks Wim
  9. WIM32

    FEA - Ansys, can anyone help???

    The .dat file is a good start, but the material properties are in someway tuneable, i.e. you may have to try to fit your calculations with an experiment. I'm not familiar with the way the .dat file is set-up, we use a little bit different approach; also I must add that doing non-linear...
  10. WIM32

    FEA - Ansys, can anyone help???

    men0wjv: About applying the dynamic displacements part: If you apply dynamic forces, these would result in (dynamic) displacements and then could be used for plotting. Dynamic forces may be applied using harmic analysis type, which is a harmonic analysis. About the plotting part: Define a path...
  11. WIM32

    Creep question...

    The formula gives the strain as a function of the time, so the unit is correct. The Burger model indeed refers to Viscoelastic flow, but it seems to be quite accurate for epoxy like materials.
  12. WIM32

    Creep question...

    Maui, Thanks for your answer. It clears up a lot of things. In the mean time I've found some different formulas and models, for visco-elastic approach of creep (I believe it's called Burger's model) and is as follows: strain (t)= stress * (((sin (m*pi))/m*pi)/E0) * t exp m where m is a...
  13. WIM32

    Creep of concrete

    Has anybody here experience with creep of concrete? I'm investigating this behaviour in terms of microns. Any book or reference would also be helpful. thnx
  14. WIM32

    Creep question...

    This means that a material may rupture, although the applied constant stress is far below the allowable stress? Can you give me a web-page, or book/publication were I can find these curves? Has any material creep, concrete, steel etc.?
  15. WIM32

    Creep question...

    Assuming that the temperature and stress are constant, could the moment of fracture be calculated or predicted?
  16. WIM32

    Creep question...

    I'm investigating creep of epoxy and I've found some formulas and we're currently doing some tests. From the formulas (and also from the prelimenary test results) it seems that creep never ends... But it must end at some point I guess. Is there anybody with experience in this field?? Thnx Wim
  17. WIM32

    creep test of epoxy

    Does anybody here has experience with a creep test for epoxy type material, or maybe a source were values may be found? thnks Wim
  18. WIM32

    Damping properties of materials

    Hitting things is what we're doing now; we hit every product that leaves our plant. But it seems very difficult to believe that there it is not a material constant. Because if I make a beam of steel and the same beam, but now of concrete, there is a clear difference in damping, so damping IS...
  19. WIM32

    Damping properties of materials

    Tom, I also have a list of emperically attained damping ratio's of several structures, both steel and concrete. The problem is that these ratio's are depending on the construction, and they are not valid for a different structure. For example: a damping ratio of steel, obtained via measurements...
  20. WIM32

    Damping properties of materials

    I've been looking for documentation on damping properties of materials, non-dependend on the dimensions and construction. Until now it seems that damping ratio is not a material property or constant (like Youngsmodulus). Is there anybody who can shed some light on this subject??? There are many...

Part and Inventory Search

Back
Top