| View previous topic :: View next topic |
| Author |
Message |
server
Guest
|
 Posted: Tue Jul 22, 2008 5:35 am Post subject: Young>s Modulus / Steel / Abnormal values |
 |
|
| message unavailable |
|
| |
|
 Back to top |
Dan Timberlake
Guest
|
| Posted: Tue Jul 22, 2008 5:35 am Post subject: Re: Young>s Modulus / Steel / Abnormal values |
|
|
On Fri, 21 Jan 2005 06:56:50 +0100, "Michel PIETTE"
<Michel.PIETTE@wanadoo.fr> wrote:
[quote]Good morning,
Our laboratory makes tensile testing on steels. We often observe Young>s
Modulus (initial slope of the tensile curve) very different of the expected
value of 207 GPa (we observe 140 GPa to 230 GPa) on Carbon Steel materials
in different metallurgical states (Q, QT, N, ...).
This seems to occur since years (I have asked former workers), independently
of tensile testing machines, operator, sample geometry.
We have also asked INSTRON, the supplier of our testing machine, and they
have no ideas.
To live with the problem, it was decided to make an hysteresis loop after 2%
deformation and use that slope as Young>s modulus. The value so obtained is
only slightly less dispersed, but a recent experiment with multiple
hysteresis loops (after 1% 2%, 3%, ...) shows that doing so, the Young>s
Modulus seems to decrease with the deformation performed before the
hysteresis.
Do you have any ideas or references about :
- why the initial slope and the hysteresis slope differ so much from 207 GPa
- why Young>s Modulus seems to decrease as the inital deformation increases.
I have done search on the Web with google and Copernic, but got no helpful
answer.
Thank you very much for your help,
Michel
[/quote]
There are stories here of a crusher shaft that(1) bent in service or
(2) had a low natural frequency. The steel reportedly test OK
chemically, but demonstrated low modulus during some physical tests.
I>m trying to find out more, but in my mind I>m clutching to the
Bauschinger effect as a >>possible<< explanation. Is it possible if
the test sample was cut from a peculiarly yielded piece of the shaft
an odd, low modulus might be measured?
thanks,
Dan T |
|
| |
|
| Back to top |
Geoff B
Guest
|
| Posted: Mon Oct 06, 2008 9:52 pm Post subject: Re: A Quick Introduction to Islam |
|
|
"Paul O" wondered...
[quote]When do we get to the part about stoning adulterers and beheading
infidels...
[/quote]
Probably at about the same stage you would if reading the bible . . . .
Anyone who needs a religion to get between themselves and 'God' really needs
to think about themselves and their lives . . . . |
|
| |
|
| Back to top |
Guest
|
| Posted: Mon Oct 13, 2008 9:39 am Post subject: Gold Recovery @ Various Prices (Was: The Flight to Gold) |
|
|
[quote]So how high will gold go?
To about $2,000 an ounce.
[/quote]
When does it become cost effective to separate gold from sea water or
other ultra low concentration sources? The local mine is already
going after [previously spent] tailings.
Bret Cahill |
|
| |
|
| Back to top |
Rick
Guest
|
| Posted: Mon Oct 13, 2008 7:37 pm Post subject: Re: Gold Recovery @ Various Prices (Was: The Flight to Gold) |
|
|
On Oct 13, 10:39 am, BretCah...@peoplepc.com wrote:
[quote]So how high will gold go?
To about $2,000 an ounce.
When does it become cost effective to separate gold from sea water or
other ultra low concentration sources? The local mine is already
going after [previously spent] tailings.
Bret Cahill
[/quote]
Well I don>t understand the whole gold fix principle.
First of all the price of gold on the markets is just a declaration,
by a small group of people. Like a pontifical command, twice daily,
the phone rings in London, and someone says, the price of gold is now
and then they give the price.
If people thought that the fact that the FED is a private company and
not a governmental body was alarming, I wonder what they might think
about how the price of gold was set every day would scare them?
If the price if gold is at 2000 or at 800 it isn>t because of market
forces directly, it is merely there because the gold pool (those who
fix the price) have said today, that is the price.
If they don>t want you to buy gold today, they could say, today the
price of gold is 3000 per ounce.
If they want you to buy gold, they say today, the price of gold is 400
per ounce.
So you see why the price of gold is 800 per ounce today, is because
they know, that when the shinola hits the fan like it did last week,
people will seek shelter in gold, and so anticipating that, they have
raised the price of gold to make it look unattractive, to protect the
banks.
Seeing as how they are bankers who fix that price.
And so then after fixing the price of gold, they then go on to trade
your currency against other currencies, to raise or lower your dollar
making your imports cheaper or more expensive.
And then that is how they control the world>s economy.
However, we shafted those fuckers like you would not believe this
year. lol
We sucked them right in good with a real estate bubble by insisting on
low rates, offering them user fees at banks to compensate, so they
went for it, hook line and sinker, sunk their fortunes into real
estate, and they we flattened it, and wiped out, 25 trillion of their
dollars.
Why would we do that?
Because they are pricks!
We don>t like them. They are evil. |
|
| |
|
| Back to top |
Rick
Guest
|
| Posted: Mon Oct 13, 2008 8:01 pm Post subject: Re: Gold Recovery @ Various Prices (Was: The Flight to Gold) |
|
|
Are we finished slamming them yet?
Not by a long shot. We are going to keep pulverizing them until they
submit.
We want to build a new community in the Gulf Islands, for the UN and
NATO and form an alliance of the Americas, with teh American military
playing a dominant role, because we want to preserve the strength of
the American military, because only with a strong superpower can we
prevent global disaster. Which might take the form of contagious
disease, you know the Andromeda strain type of thing or if Ebola went
airborne, you need that might to contain your losses.
And then you have the threat of nuclear war which is reduced by having
one strong superpower.
And then also you have a global economy, which requires a strong
military and at present, they are not being used effectively because
we don>t have a central governing body that works.
You have too many groups vying for economic control and in competition
with each other. The UN is useless in its present form.
For instance, the UN weapons inspectors, went into Iraq and searched
for weapons, destroyed their scud missiles, and then as soon as it was
finished, the US and Britain and Australia and I forget who else
initially invaded Iraq and began to steal their wealth, their
artifacts from their museums and then their oil.
So the UN was just a puppet of Imperialism and so that made it into a
charitable organization to help poor countries because it died as a
political organization that day.
And NATO was not strong enough to go against America and so Britain
seeing its oil claims threatened, was forced to join in the
plundering.
Then the rest followed.
So essentially that was fun, and now if we can, we will kill you all.
But until then, we will hurt you worse by taking all your money.
And then when you are finished jumping off buildings and shooting your
children, you WILL make that new governance center, or you will just
fade away into poverty and chaos and confusion and rioting in the
streets and anarchy. |
|
| |
|
| Back to top |
Rick
Guest
|
| Posted: Mon Oct 13, 2008 8:12 pm Post subject: Re: Gold Recovery @ Various Prices (Was: The Flight to Gold) |
|
|
They like to pretend they can>t hear me, unless it is convenient for
them. They have selective hearing.
HHO is going to really take the steam out of oil and natural gas and
local utilities because you can make a space heater, using a small
brown>s gas torch, that heats up a ceramic brick, that will heat a
room, for a penny a day.
http://www.youtube.com/watch?v=_zMNg3slO1U |
|
| |
|
| Back to top |
|
