I would like to find the appropriate failure criterion for polymer materials. Von Mises is typically the accepted criterion for ductile metals, but for plastics I have read in many cases it is not accurate. The polymers I am most interested in are : ABS, Acrylic, SAS, HDPE, LDPE, and PC. Would...
What is your experience and position on referral fees by an unlicensed design consultant from a PE exempt industry ? The Professional Engineering ethics standards seem pretty clear and prohibit such fees to be received or given by the PE unless they are from a sales or marketing company...
Thanks for the input everyone. I would think I need to look into the Error & Omissions (Professional Liability) insurance and General Liability to cover other aspect of the business as well.
If you work as a direct employee for an non-exempt industry, such as an Engineering Services...
I have PE license and considering doing contract design work in exempt industries. Do I have additional liability concerns as a contractor vs a direct employee in an exempt industry? Does not stamping drawings or documents eliminate the liability as PE?
Some of the product designs will be use...
"You may get a different (better/worse) throttle reponse, but no changes to the TV damper will affect power."
Yes, true enough - part of mfrs marketing I guess. I would think the lighter pulley "indicates" a power increase on an inertia dynamometer, so they feel they can make the claim. I...
Thanks for the input Greg. From what I researched, it is fairly involved and specialized test equipment is needed to accurately measure the performance of TV damper. But, is it possible to get a qualitative comparison between the two dampers by marking the position of the inner and outer hub...
I am considering a replacement of the OEM Harmonic Crankshaft Damper with a aftermarket damper because of the lower cost. The aftermarket company claims to meet OEM specs, but the aftermarket design is different. The center hub that attaches to the crank has less about 0.5 Kg less mass and a 5...
I thought of another fastening method in case internal threads are not possible, so I'll just add it here for comment. A bracket with the internal threads for the rod can be attached to the boss, if an undercut recess or hole can be added to the cylinder boss in a secondary operation.
Hello All,
I am new to designing with glass and I would like to get some input on attachment methods for mass production of a assembly for a consumer product. The preliminary design is a 1/4 metal rod threaded into the center of a 3 inch diameter x 1 inch high glass cylinder. There is a...
I am looking for some info and any pointers on upgrading to Win XP Pro SP2 to SP3 with WF3. I plan to back up all data and follow MS instructions of course, but just wondering if there is anything special I need to do for WF3.
I am looking for some info and any pointers on upgrading to Win XP Pro SP2 to SP3 with SW2008 and up. I plan to back up all data and follow MS instructions of course, but just wondering if there is anything special I need to do for SW.
I need to bring up an old assembly and drawing files done in SW2003 into SW2008. Is there any procedure I should do to prevent problems or corrupting the file?
I have a part with two configurations that I cannot get to activate in
the assembly. Both the default and the new configurations show in
part mode, but only the default part configuration shows in the
assembly tree. If I right click in the feature tree on the part to
access the properties...
Existing width on the road is 15 ft. Turns out the strip between the curb and walk is 45" and there is 24" available behind the walk by way of an easement. This is a suburban zoning. Using the 24" behind the walk probably won't be popular with the homeowners, but these are the choices. I also...
"You don't mention how fast people drive on this street. At higher speeds, trees over 4" in diameter are hazards, should a driver run his vehicle off the road and hit one."
There is a 25 MPH limit on the street which is suburban residential zoned. So I would think speed should not be an issue...
