单词 | thermomechanical |
释义 | thermomechanicaladj. a. Physics. Designating or referring to an effect observed in helium II in which the liquid tends to flow from a region of lower to one of higher temperature. ΘΚΠ the world > matter > physics > electromagnetic radiation > heat > [adjective] > flowing higher thermomechanical1939 1939 H. London in Proc. Royal Soc. A. 171 484 By maintaining a temperature gradient along the capillary, it is thus possible to produce a flow of helium against a pressure gradient... The phenomenon which we shall call the ‘thermomechanical effect’ reveals a new mechanism by which heat can be transformed into mechanical work. 1959 K. R. Atkins Liquid Helium i. 11 The thermo~mechanical pressure difference Δp arising from a temperature difference ΔT is given by Δp/ΔT = Q*/TV, where Q* is the heat transfer associated with the transfer of unit mass..and V is the volume of unit mass. 1964 New Scientist 24 Sept. 773/1 Shortly after the discovery of this ‘thermo-mechanical’ effect the complementary ‘mechano-caloric’ phenomenon was observed. 1974 D. R. Tilley & J. Tilley Superfluidity & Superconductivity i. 9 These manifestations of the thermomechanical effect show clearly that heat transfer and mass transfer in the II are inseparable. b. gen. Both thermal and mechanical; spec. in Metallurgy, involving simultaneous thermal and mechanical treatment to achieve results not obtained when they are applied separately. ΘΚΠ society > occupation and work > industry > working with specific materials > working with metal > [adjective] > other metalworking processes brass-finishing1879 basic1880 Mannesmann1920 thermomechanical1974 1974 Sci. Amer. June 34/3 The less energetic ions (thermal deuterons and tritons)..are capable of producing sharp thermomechanical stresses in a thin skin of the first wall. 1975 Nature 7 Aug. 455/3 The uncertainty in geochemical characteristics, especially of the radiogenic isotopes, leaves many degrees of freedom in predicting the present thermo-mechanical state of the interior [of Mercury]. 1976 Nature 22 July p. iii. (advt.) The journal will welcome papers concerned with the relevant areas of materials technology and metallurgy, e.g. thermomechanical treatments. This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2019). < adj.1939 |
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