Talk:Resilience (materials science)

message: Why is network resiliance being redirected to an external URL?
The external URL in question is to the wiki of an international research initiative on network resilience, which contains far more information relevant to this topic than can be placed on this page.
Justin P. Rohrer 14:23, 19 December 2006 (UTC)
thread_title:  Network Resilience 

message: I've removed the "Resiliency applied to the critical infrastructure" section (three, Jan 14 edits by Don O'Neill), because it appears to be a copyright violation of this material . --Ronz 16:39, 21 January 2007 (UTC)
thread_title: Copyvio

message: I agree with whoever put up the request to make a disambiguation page and split off the sections. --Selket Talk 06:14, 5 February 2007 (UTC)
replies: text: As of now, I'm splitting the page. I'm leaving the material science section here and moving other items to their own page. All can be found on the new Resilience (disambiguation) page, linked from all, which will address the concern raised by the anon IP above. --AndrewHowse (talk) 16:20, 14 March 2008 (UTC)
replies: text:  I think that the main page should be the disamb page and this page should go to one for material science. I am making the changes now. --Sirsurvivealot (talk) 19:59, 18 February 2015 (UTC)
thread_title:  Disambiguation 

message: It's well know that resilience can change a lot depending on the materials temperature, how adding something about this?  —Preceding unsigned comment added by 85.18.50.180 (talk) 21:18, 12 April 2011 (UTC)
thread_title:  Resilience and Temperature 

message: In the section of "Material Resilience" there is a section "Other uses of resilience" which is more appropriate for a different section. Consider moving it.  — Preceding unsigned comment added by Pphilbey (talk • contribs) 12:43, 16 August 2012 (UTC)
thread_title:  Material resilience, something out of place. 

message: I suggest to put the disambiguation page her (resilience), rather than the quite specific material-related resilience article. 92.225.187.221 (talk) 10:51, 7 July 2013 (UTC)
replies: text: Agreed doing it now. --Sirsurvivealot (talk) 20:00, 18 February 2015 (UTC)
thread_title:  Disambiguation 

message: It has been suggested that this article be merged with Toughness. (Discuss) Proposed since July 2015.
I can't find the discussion page that discusses the July 2015 proposal to merge the Resilience (materials science) page with the toughness page. I thought it would be here. I oppose the proposal. Here's why.
The resilience of a material is distinct from and not the same as the toughness of a material. Resilience is a measure of the energy absorbed, stored and released during elastic deformation. By contrast, toughness is a measure of the energy absorbed and stored (some of which may be released as thermal energy aka 'heat') during plastic deformation. The definitions of resilience and of toughness here on Wikipedia on their respective Wikipedia pages should suffice to make this clear, thus:
In material science, resilience is the ability of a material to absorb energy when it is deformed elastically, and release that energy upon unloading. Proof resilience is defined as the maximum energy that can be absorbed within the elastic limit, without creating a permanent distortion. The modulus of resilience is defined as the maximum energy that can be absorbed per unit volume without creating a permanent distortion. It can be calculated by integrating the stress-strain curve from zero to the elastic limit. In uniaxial tension,
: U_{r}= \frac{\sigma_{y}^2}{2E}
where Ur is the modulus of resilience, σy is the yield strength, and E is the [[Young's modulus
By contrast:
In materials science and metallurgy, toughness is the ability of a material to absorb energy and plastically deform without fracturing.[1] One definition of material toughness is the amount of energy per unit volume that a material can absorb before rupturing. It is also defined as a material's resistance to fracture when stressed.
Toughness can be determined by integrating the stress-strain curve.[1] It is the energy of mechanical deformation per unit volume prior to fracture. The explicit mathematical description is:
:  \tfrac{\mbox{energy}}{\mbox{volume}} = \int_{0}^{\epsilon_f} \sigma\, d\epsilon 
where
*  \epsilon_{}  is strain
*  \epsilon_f  is the strain upon failure
*  \sigma  is stress
Another definition is the ability to absorb mechanical energy up to the point of failure. The area under the stress-strain curve is called toughness.
If the upper limit of integration up to the yield point is restricted, the energy absorbed per unit volume is known as the modulus of resilience. Mathematically, the modulus of resilience can be expressed by the product of the square of the yield stress divided by two times the Young's modulus of elasticity. That is,
: Modulus of resilience = 
 
58.165.105.140 (talk) 04:58, 24 October 2015 (UTC)
replies: text: Closing, given the opposition and lack of support.  Klbrain (talk) 16:53, 25 October 2017 (UTC)
thread_title:  Resilience vs toughness