HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 4/4
Charles Murray
User Rank
Blogger
Re: Steel vs. aluminum
Charles Murray   10/5/2012 5:46:10 PM
NO RATINGS
Dave, what are the differences between forged aluminum and steel, in terms of modulus of elasticity, compressive strength and whatever else might be relevant here?

Dave Palmer
User Rank
Platinum
Steel vs. aluminum
Dave Palmer   10/5/2012 2:52:32 PM
NO RATINGS
@Ann: Although steel is stronger than aluminum, it's not really too surprising that forged aluminum wheels are stronger than steel wheels made from sheet metal -- the designs and manufacturing processes are completely different.  A forged steel wheel would be much stronger than a forged aluminum wheel, but would also weigh a lot more. (Forged steel wheels make sense for railroad cars, but definitely not for on-road applications).

The lifecycle analysis is very interesting.  It is very comprehensive, and all of the assumptions seem to be reasonable.  It makes a convincing case.

Ann R. Thryft
User Rank
Blogger
Re: Lifecycle
Ann R. Thryft   10/5/2012 12:04:31 PM
NO RATINGS
Lou, you're certainly right about the recyclability of aluminum, and steel too to a somewhat lesser extent. But it's also true that LCA has to look at everything. In fact, the latest concept of the life cycle is "cradle-to-cradle", not "cradle-to-grave." CtoC includes that last link in the chain that closes the loop (to mix metaphors) of recycled material going back into the product.

naperlou
User Rank
Blogger
Lifecycle
naperlou   10/5/2012 11:44:20 AM
NO RATINGS
Ann, you mention end of life phases when talking about the life cycle cost analysis.  You mention recycling and disposal.  Steel and aluminum of this type will certainly be recycled.  It has been known for some time that aluminum recycling is extremely effecient.  I think it uses about 5% of the energy to recycle aluminum as it does to refine it from bauxite.  Steel is also effecient, although I am not sure of the ratio.  Steel mini-mills are the most effecient steel mills becuase they use scrap.  So, I assume in this case the wheels of both types will be recycled.

It is good, though to see such comprehensive analysis.  If you are looking at full lifecycle costs, then you really have to look at everything.

<<  <  Page 4/4


Partner Zone
Latest Analysis
Conventional wisdom holds that MIT, Cal Tech, and Stanford are three of the country’s best undergraduate engineering schools. Unfortunately, when conventional wisdom visits the topic of best engineering schools, it too often leaves out some of the most distinguished programs that don’t happen to offer PhD-level degrees.
Sherlock Ohms highlights stories told by engineers who have used their deductive reasoning and technical prowess to troubleshoot and solve the most perplexing engineering mysteries.
Airbus Defence and Space has 3D printed titanium brackets for communications satellites. The redesigned, one-piece 3D-printed brackets have better thermal resistance than conventionally manufactured parts, can be produced faster, cost 20% less, and save about 1 kg of weight per satellite.
A group of researchers at the Seoul National University have discovered a way to take material from cigarette butts and turn it into a carbon-based material that’s ideal for storing energy and creating a powerful supercapacitor.
Hacking has a long history in the movies, beginning with Tron and War Games and continuing through The Girl with the Dragon Tattoo.
More:Blogs|News
Design News Webinar Series
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
6/25/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Sep 22 - 26, MCU Software Development – A Step-by-Step Guide (Using a Real Eval Board)
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: September 30 - October 2
Sponsored by Altera
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service