Newsgroup sci.engr.mech 28574

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Bob Doncom wrote:
> 
> Hey folks........
> 
> Do you girs really care that much??????
> 
> P.s.  Most of my colleagues just call me by my name.....and I can live
> with that!
____________________
Bob,
That is exactly my point!!!!!
No it doesn't matter.  And everyone should just get over it and go on.  Stop 
complaining about whether they are called MEN or whatever...
It has gotten totally out of hand.  
Although I do want to say that yesterday was the first time that I have ever 
responded to a newsgroup (I have been reading them, but I haven't been 
putting in my input) and when I responded I responded to the wrong person,  I 
was trying to get my point across to the woman who started all of this JUNK, 
not to Katarina.  So my apologies about that mistake.  I was just trying to 
get the portion of Katarina letter that stated the original concern and I 
didn't get all of her personal message erased like was intended.  Sorry for 
the confusion.
Toni

Jon Peltier wrote:
> 
> In article <55qaug$i5k@lore.sprynet.com>, koalmnr@m2.sprynet.com (M. C. (Mike) Albrecht) says:
> >
> >In article <327F82EA.32E4@mmm.com>, dfroell@mmm.com says...
> >>
> >>I am looking for a technique to quickly and easily identify hairline
> >>fractures and cracks in large steel and chrome cylinders.  The
> >>cylinders are stored on racks and weigh well over 500 lbs each.
> >>I would like to inspect them while they are stored on the racks.
> >>Can anyone help
> >
> >The simplest method is to use dye penetration method.  Were a colored
> >dye, uusally blue is sprayed on the metal, excess wiped off and the
> >surface checked for cracks.  Some dyes respond to ultraviolet light
> >making them more visible.
> >
> >A more time consuming method is to use a magnetic based fluid and
> >then scan for it.
> 
> A third technique would be an eddy current testing apparatus, but
> geometric constraints, the amount of surface to scan, and the ability
> to reach everywhere with the probe would limit its usefulness.  If you
> knew how & why the cracks formed, it would focus your search.
You could also use an ultrasound setup (not the expensive version used
to look at infants in the womb).  This is a popular method for tracking
the growth of cracks in high-pressure steam lines without disassembling
the pipes.  It is also used to detect improperly welded joints.
-- 
Jason Griggs                           main(){while(!fork())sleep(1);}
Department of Dental Biomaterials
University of Florida
http://biomat.dental.ufl.edu/~jason

M.E. Moore wrote:
> What will be the safety issues when electric cars hit the streets?
> Would there be electric shock hazards for rescue personnel when they're
> digging people out of a wrecked electric car?
> 
> --
> M.E. Moore
> Los Alamos, NM
The dangers lurking inside yet-to-be-released electric cars will not
come from electricity but from the flywheel.  Yes, the flywheel.  Latest
designs for electric cars use a massive flywheel to store energy.  What
do you think happens to those flywheels after a crash?  Well, I can see
it now... "Thousands of attorneys file suit after suffering injuries
while chasing flywheels looking for potential clients!"  It could
happen.
-- 
- Ed -            "I'm responsible for my words,
                   not your assumptions."

Hi,
I attended the following workshop in 1991:
Turbulence Modelling For Impinging Flows
UMIST (UK)
30 October 1991
(sponsors: ERCOFTAC UK North Pilot Centre, SERC CFD Community Club, EASE
Education and Awareness Programme)
Experimental data for two cases (Single jet impinging on a flat plate,
twin jets impinging on a flat plate) were made available on disk to the
CFD modellers.
I would like to know if the experimental data is still available.  If
anyone knows of a source of published results, website, etc., I would be
most grateful if you could let me know.
Thanks
Adrian
Adrian Gaylard
MIRA, UK
adrian.gaylard@mira.co.uk
apg@brraero.demon.co.uk

>>   MisterFixit  wrote:
>>>DC wrote:
>>>> 
>>>> Why doesn't a person electrocute himself when he turns on the
>>>> ignition in a car, since he is holding a metal key contacting metal
>>>> leads (to the battery) in the steering column, and moreover his body
>>>> is touching the car's ground (its frame)?
>>>> Thanks for clarifying this.
Is this thread some kind of a joke? You don't electrocute
yourself for the same reason that you don't electrocute yourself
when touching a metal stove, a toaster, a razor...whatever, because
the device is _i_n_s_u_l_a_t_e_d_ ! Sure the key is made of metal,
but it does _not_ make a connection with the electrical wiring, 
there's some sort of insulator in the actual ignition switch.
The debate about DC vs. AC, voltages etc is totally beside the point,
although it's true that you won't feel the 12V DC emitted by a car battery 
unless you've got wet skin, or a fleshwound. 12V AC across your fingers 
will be felt as a mild tingling sensation.
/Ricard
--
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email      : contact@bsecurity.se
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The Second Biennial European Coating Symposium
                            Euromech Symposium 367
                     Fluid Mechanics of Coating Processes
               22nd - 25th July 1997, Université Louis Pasteur,
                             Strasbourg, FRANCE.
                                  Background
          Interest in Coating Process Fundamentals and their
          Applications has risen sharply in recent years. Indeed
          fluid film coating is now an established as an
          interdisciplinary research areas incorporating
          analytical, computational and experimental methods.
          The organisers of the Second European Coating Symposium
          aim to continue the spirit of the ECS '95 by:
             * attracting a healthy balance of academics and
               industrialists;
             * providing a suitable forum for the presentation and
               discussion of recent work and the informal exchange
               of ideas;
             * including a varied programme of keynote
               presentations, papers, sponsored poster session,
               social events and a conference dinner.
          The Second European Coating Symposium will be held at
          the Université Louis Pasteur de Strasbourg (France), in
          July 1997.
          For more details check out http://icrg.leeds.ac.uk/ECS/
-- 
Dr. J.L.Summers, Department of Mechanical Engineering
University of Leeds, LEEDS LS2 9JT
Tel: +44 (0) 113 233 2151, Fax: +44 (0) 113 242 9925
email: j.l.summers@leeds.ac.uk

In article <84@da486f.win.net>, Charles E. Ely (ceely@da486f.win.net) writes:
>I have to predict the resonant frequency of a large passive,
>unpowered vibration indicator that can be seen from far away. 
>The indicator is comprised of a fairly stiff, tapered, hollow rod.
>One end is fixed in a bracket.  A mass is attached to the free end.
>The mass is between 4 and 10 times the mass of the rod.
>
>I thought I would adapt some basic spring equations but nothing
>from my library accounts for the weight distribution and taper of
>the rod. 
>
>Can somebody recommend a handbook that would make a good addition
>to my library? 
> 
>
>
Roark "Formulas for Stress and Strain" shows, in section
7.8, how to calculate the effective section modulus for
tapered beams. From there, it is not too hard to get to an
estimate of natural frequency (even with a lumped mass at
the end). A good reference that I like is "Fundamentals of
Mechanical Vibration" by Kelly, published by McGraw-Hill
in 1993.
Hope this helps. Try me via E-mail for further discussion.
John E. Hart                            jehart@ddl.win.net
Distribution Dynamics Labs,Inc.         612-941-9226 (office)
Suite 110                    		  612-496-3009 (home)
9675 West 76th Street
Eden Prairie,  MN  55344-3739		612-941-9318 (fax) 

Ed Lavoie wrote:
> 
> M.E. Moore wrote:
> 
> > What will be the safety issues when electric cars hit the streets?
> > Would there be electric shock hazards for rescue personnel when they're
> > digging people out of a wrecked electric car?
> >
> > --
> > M.E. Moore
> > Los Alamos, NM
> 
> The dangers lurking inside yet-to-be-released electric cars will not
> come from electricity but from the flywheel.  Yes, the flywheel.  Latest
> designs for electric cars use a massive flywheel to store energy.  What
> do you think happens to those flywheels after a crash?  
The flywheels designed for cars are anything but "massive"  They use
extremely high speeds to store the energy, rather than large diameter
and/or mass.  (Actually, the case containing the flywheel will have two
flywheels, rotating in opposite directions, with a net angular momentum
of zero.)  The flywheels are made out of exotic modern materials to
withstand the forces involved in high speed rotation.  Also, they are
designed so that their mode of failure is such that if they do exceed
their maximum speed they won't fly apart, but rather turn into something
of the consistency of cotton candy.  I don't know how this would react
to sudden impact (as in an automotive accident), but I suspect it won't
result in shards of flywheel flying everywhere.  However, in the event
of an accident where the flywheel case is undamaged, the fireman using
the 'Jaws of Life' to extricate a victim should use cauton not to
puncture the flywheel case, as that could cause unpredictable results...
As an aside (relating to electric cars)...
While electric vehicles have the potential to reduce vehicle emissions
and smog in our cities, there is one potential drawback that isn't
mentioned much.  Joe Q. Driver gets home from work at 5:30, parks his
electric vehicle in his garage and plugs it in to charge up for the next
day.  What he and all the other drivers are doing is adding to the peak
electrical loads which already occur around the dinner hours.  This
causes older, less efficient generating stations to be brought on-line,
possibly adding more pollution to the envrionment than if Joe had driven
a gas-powered vehicle to work.  Remember that most power stations cannot
produce power on a moment's notice, so if the evening peak loads are
increased in general, the older stations will have to operate all the
time so that they will be able to provide the power for Joe Driver to
charge his car.  However, if Joe and the other Drivers set their
chargers on a timer, so that their cars charge after the evening peak
loads, the electrical demands will be less uneven than they are now,
enhancing the efficiency of the overall generating system.
My $0.02
-Paul

In <01bbd2a8$6ff0a080$8ad623c7@stef> "S. Yoder" 
writes: 
>
>
>
>Tom_Austin  wrote in article
><328B9F7F.31DF@optilink.dsccc.com>...
>> > 
>> > I personally never gave a flip. Yet I don't like "draftswoman",
but I
>do
>> > take it as a sign of politeness when a guy goes out of his way to
>> > say "drafter". "Draftsperson" doesn't cut it either. Makes me
think of
>> > an old Far Side cartoon ;)
>> 
>> 
>> Maybe it's a generational/geographical thing.  I'm 35, and in all my
>> time in the workplaces, and all the places I've worked, Drafter and
>> Designer are the standard terms, even by the Old Guard guys, who are
>> traditionally sexist in every other way.
>> 
>> I'm in California.  Maybe that's it.
>Eh, could be. I'm in the "bible-belt" and graduated from a high school
>that, only 6 years ago, still strongly discouraged females from taking
>the drafting/machine shop class. But then that makes me younger than
>you by about 10 years.
>
>I'll cast my vote for attitude, though.
>Enjoy,
>Stef
I'm sixty years old, am M.E. with a four-page close spaced resume, and 
am a northeast-corridor big-city dirty old man sexist pig of the First
Magnitude. It's been Drafter and Designer since when I rode my dinosaur
to work before I got my '47 Plymouth. A designer is a drafter with more
time on the board and more catalogs on the shelf. Or these days, more
time on the mouse and more vendor CAD files on the hard drive.
And I'll tell ya what: There comes a point in life when the last thing
you worry about is silly things like job titles . . or whether the 
designer/drafter wears a skirt. (Yes, Viginia . . women USED to wear
things called skirts . . before they were "liberated" and became
"regular guys" . . ).
Ta-ta.
cbk      

....so sue me.
Jim Weir wrote:
> 
> Gary Lynn Kerr  shared these priceless pearls of
> wisdom:
> ->To whom ever wrote that the term draftsMEN was not correct.
> 
> Well, as the person that started this little side thread, let me do a short
> reply:
> 
> For whatever little cosmic joke, She made the male of the species
> physically dominant, speaking from a statisitical point of view.  In the
> days of the hunter-gatherer, that made the male the food supplier.  If the
> female didn't please the male, she didn't eat.  Ain't THAT a fancy reward
> system?  Sure as little green apples weeds out the uppity ones in a jolly
> quick hurry.
a grain of truth here, but look at the phrase:  hunter-gatherer.  The
males did the hunting, the females did the gathering.  My guess is that
hunting was a far less consistent source of food than gathering, So if
the male didn't please the female, guess what?
no nuts and berries tonight, hon!
Now what does THAT remind  me of?
(*to paraphrase Dennis Leary*)
OH, I'm going to hell for that one....and so are you, if you laughed.
>

I would like to know if someone has experienced the FRVO .
Plese let me know how it works and the address of the company that
produces it.
Thank you very much for every kind of answer.
Riccardo "Mussel"  Cozza