Need help, people who know metals and resources - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Lounge For casual talk about things unrelated to General Motors. In other words, off-topic stuff. And anything else that does not fit Section Description.

Reply
 
 
 
Thread Tools Search this Thread
Old 12-19-2006, 10:11 AM   #11
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Quote:
Originally Posted by 95naSTA
Machine Theroy and Design.
The book written by a guy named Leroy?
willwren is offline   Reply With Quote
Old 12-19-2006, 10:12 AM   #12
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Thanks: 0
Thanked 0 Times in 0 Posts
corvettecrazy is on a distinguished road
Default

Quote:
Originally Posted by 95naSTA
Its strange it says data points with AA are not for design.
The type of text I got that out of is Machine Theroy and Design.
I think that is because the actual values will vary by the company that manufactures the metal. Where slightly different processes will yield different strengths
corvettecrazy is offline   Reply With Quote
Old 12-19-2006, 10:22 AM   #13
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

Quote:
Originally Posted by willwren
The book written by a guy named Leroy?
Nope. I did have the class with a guy named Leroy Alaways though.
The actual name of the book is Mechanical Engineering Design.

corevettecrazy,
What value did you get when you calculated it?
95naSTA is offline   Reply With Quote
Old 12-19-2006, 10:29 AM   #14
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Thanks: 0
Thanked 0 Times in 0 Posts
corvettecrazy is on a distinguished road
Default

the calculated value is 18.95424837 (copied right from excel)

also does this make sense.
We need to find the work deforming and rupturing the specimen. Since the machine does not measure the length per time or load, creating an integral is sort of a pita. But I have the Toughness modulus, which is equal to the area under the stress strain curve.
The area is equal to the strain engery density (u). The strain energy (U) is another name for the work done. So if I were to multiple u by the volume of our piece then I would get approximately the amount of strain engery(work done)

does that sound right?
corvettecrazy is offline   Reply With Quote
Old 12-19-2006, 10:36 AM   #15
Junior Member
 
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road
Default

Quote:
Originally Posted by My Father In Law
% Elongation in 2" of length is 19% for 1/2" Diameter 2020 T4 Aluminum.
Does that help?
vital49 is offline   Reply With Quote
Old 12-19-2006, 10:43 AM   #16
Senior Member
True Car Nut
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

Quote:
Originally Posted by corvettecrazy
the calculated value is 18.95424837 (copied right from excel)
Well in the table I scaned it said Fracture Strain is .18 and isn't % stain just strain x 100?
So 18%?
I'm not positive but it seems to beclose to your calculated value.

I'm not sure about your second question. I'd have to go diggin for that and I'm just getting over food poisoning.
95naSTA is offline   Reply With Quote
Old 12-19-2006, 10:44 AM   #17
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Thanks: 0
Thanked 0 Times in 0 Posts
corvettecrazy is on a distinguished road
Default

Quote:
Originally Posted by vital49
Quote:
Originally Posted by My Father In Law
% Elongation in 2" of length is 19% for 1/2" Diameter 2020 T4 Aluminum.
Does that help?
awsome...

because our origional length was 1.989" with a diameter of .503inches any chance you know where he got it from. Book name or website. I dont need exact info, just more than "bonneville club member'* father inlaw" lol
corvettecrazy is offline   Reply With Quote
Old 12-19-2006, 10:47 AM   #18
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Thanks: 0
Thanked 0 Times in 0 Posts
corvettecrazy is on a distinguished road
Default

Quote:
Originally Posted by 95naSTA
Quote:
Originally Posted by corvettecrazy
the calculated value is 18.95424837 (copied right from excel)
Well in the table I scaned it said Fracture Strain is .18 and isn't % stain just strain x 100?
So 18%?
I'm not positive but it seems to beclose to your calculated value.

I'm not sure about your second question. I'd have to go diggin for that and I'm just getting over food poisoning.
agreed, I guess I miss understood the table. I cant read the note at the bottom but it mentions something about 100. but that is all I can make out of it. Any chance its revilent?
corvettecrazy is offline   Reply With Quote
Old 12-19-2006, 11:09 AM   #19
Junior Member
 
Join Date: Mar 2003
Location: Purgatory
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
vital49 is on a distinguished road
Default

Quote:
Originally Posted by corvettecrazy
Quote:
Originally Posted by vital49
Quote:
Originally Posted by My Father In Law
% Elongation in 2" of length is 19% for 1/2" Diameter 2020 T4 Aluminum.
Does that help?
awsome...

because our origional length was 1.989" with a diameter of .503inches any chance you know where he got it from. Book name or website. I dont need exact info, just more than "bonneville club member'* father inlaw" lol
Quote:
Originally Posted by My Father In Law
"ASM Metals Reference Book", 2nd Edition, 8th Printing, American Society for Metals, 1983, page 299.
vital49 is offline   Reply With Quote
Old 12-19-2006, 11:25 AM   #20
Senior Member
True Car Nut
Thread Starter
 
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Thanks: 0
Thanked 0 Times in 0 Posts
corvettecrazy is on a distinguished road
Default

thanks to everyone who helped. 1/2 a letter grade higher now secured on this lab.
corvettecrazy is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Alkaline Metals + Water *video* niceguy Lounge 8 06-03-2011 10:05 AM
Wasted resources and solutions for the energy problem? GonneVille Lounge 6 04-16-2008 07:37 PM
the nerve of some people *stupid people rant* ga93sle Lounge 19 09-04-2006 03:30 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:48 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.