permanent deformation
21Dipôle Permanent — En chimie, un dipôle permanent résulte d une asymétrie dans la distribution des charges électroniques au sein d une molécule. Dans le cas d une molécule linéaire, le dipôle permanent résulte de la différence d électronégativité entre les deux… …
22Dipôle permanent — En chimie, un dipôle permanent résulte d une asymétrie dans la distribution des charges électroniques au sein d une molécule. Dans le cas d une molécule linéaire, le dipôle permanent résulte de la différence d électronégativité entre les deux… …
23plastic deformation — noun A permanent change in the shape or size of an object without breaking it or putting it under excessive stress …
24plastic deformation — /plæstɪk ˌdifɔˈmeɪʃən/ (say plastik .deefaw mayshuhn) noun a permanent change in the shape of a piece of metal as a result of a mechanical stress …
25plastic deformation — A permanent change in the shape or size of a solid body without fracture resulting from the application of sustained stress beyond the elastic limit …
26rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …
27Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …
28solids, mechanics of — ▪ physics Introduction science concerned with the stressing (stress), deformation (deformation and flow), and failure of solid materials and structures. What, then, is a solid? Any material, fluid or solid, can support normal forces.… …
29Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
30Hardness — This article is about mechanical properties of materials. For other uses, see Hard. Hardness is the measure of how resistant solid matter is to various kinds of permanent shape change when a force is applied. Macroscopic hardness is generally… …
