Talk:Brittleness

message: what is the relation b\w brittleness and density?
 - None :
 Tungsten is heavy (19.25  g·cm−3) and can be brittle
 Lead is heavy (11.34  g·cm−3) and malleable (Lead glass on the other hand is brittle as well as heavy : 6  g·cm−3)
 Graphite is light (2.09–2.23 g/cm³) and brittle
 Aluminium is also rather light (2.70 g·cm−3) and malleable
"When used in materials science, it is generally applied to materials that fail in tension rather than shear"
I don't see why it should fail in tension more than shear. It might be true for bending where external fibers would break sooner than for a malleable material, but tension ?  —Preceding unsigned comment added by 84.12.218.218 (talk) 12:10, 20 November 2007 (UTC)
thread_title: Untitled

message: "A material is brittle if it is liable to fracture when subjected to stress."
This is a very unsatisfactory definition of "brittle", since all materials (including ductile ones) will fracture/fail when subjected to sufficient stress. The term brittle refers to those materials that fail under stress without significant (plastic) deformation/strain, i.e. prior to the onset of general yielding. I invite discussion as to whether or not to include the word 'plastic' in the definition; a rubber band, when stretched at room temperature, will fail without deforming plastically even though the(elastic) strain may be over 100%. This doesn't really fit the general perception of brittle behaviour. It may therefore be better to omit 'plastic', and talk simply in terms of failure without significant [elastic or plastic] deformation. --Amgreen (talk) 13:38, 13 October 2010 (UTC)
replies: text: Sounds good to me, feel free to fix it. Wizard191 (talk) 17:49, 13 October 2010 (UTC)
thread_title: Definition

message: Hello! I am a student editor currently taking an editing course, and will be working on this article as part of my coursework. I hope I will be able to contribute well in this article and am looking forward to collaborating and learning from both past and present editors who have worked and are working on this article as well! I am still new to editing in Wikipedia, and any input or advice that anyone can give me would be greatly appreciated!
In this article, I aim to focus on shortening the lead and redistributing the information in it to the body. I also want to try reorganising the article body and potentially adding some information about brittleness. I have a good source from a materials science class that I took, so I hope that information will prove to be useful. I’d also like to try finding more relevant sources for this article, since there are very few citations and references on it. --Honeylemongreen (talk) 05:17, 09 March 2021 (UTC)
thread_title: WikiEdu course project in editing

message: I don't entirely see the necessity of the crack growth section within this wikipedia page. I feel like it pertains more to a subsection of brittle fracture instead, and the Fracture page, which has a brittle fracture subsection and mentions supersonic fracture, has already been linked somewhere in the article. Maybe, to redirect people interested in brittle fracture specifically to the brittle fracture subsection of fracture, we can specifically link it? Honeylemongreen (talk) 19:59, 17 March 2021 (UTC)
thread_title: Necessity of crack growth section?