extensometern.

/ɛkstɛnˈsɒmɪtə/

Etymology: < Latin extensus, past participle of extendere to extend v. + -ometer comb. form.

An instrument for measuring the deformation of metal under stress, or an instrument in which such deformation is used to register the elastic strains borne by other materials (e.g. concrete); (see also quot. 1958).

ΘΚΠ

the world > space > shape > misshapenness > [noun] > action or fact of putting or being out of shape > as result of pressure or strain > instrument for measuring deformation

deflectometer1836

extensometer1887

deformeter1927

1887 Proc. Physical Soc. 8 183 Screw-Micrometer Extensometer.

1902 Encycl. Brit. XXXIII. 10/1 Extensometers, or apparatus for observing the small deformation which a test-piece in tension or compression undergoes before its limit of elasticity is reached.

1925 E. S. Andrews Strength of Materials (ed. 2) 371 Extensometers are instruments for measuring the elastic strains of materials in tension or compression.

1950 Engineering 25 Aug. 172/3 Twin extensometers were mounted in a manner similar to that employed in tests on reinforced-concrete beams using the Lamb extensometer.

1958 New Scientist 15 May 38/3 Earth strains in the Andes are to be studied by..seismologists working with ‘extensometers’... The extensometer or strain-seismograph measures the differential motion between two nearby points, those at the ends of the instrument. The change of length between the two ends—which may either stretch or squeeze—divided by the original length gives the change in strain.

1966 New Scientist 23 June 796/2 A hydraulic extensometer sensitive to dimensional changes in the order of one part in 10 000.

This entry has not yet been fully updated (first published 1933; most recently modified version published online March 2019).

单词	extensometer
释义	extensometern. /ɛkstɛnˈsɒmɪtə/ Etymology: < Latin extensus, past participle of extendere to extend v. + -ometer comb. form. An instrument for measuring the deformation of metal under stress, or an instrument in which such deformation is used to register the elastic strains borne by other materials (e.g. concrete); (see also quot. 1958). ΘΚΠ the world > space > shape > misshapenness > [noun] > action or fact of putting or being out of shape > as result of pressure or strain > instrument for measuring deformation deflectometer1836 extensometer1887 deformeter1927 1887 Proc. Physical Soc. 8 183 Screw-Micrometer Extensometer. 1902 Encycl. Brit. XXXIII. 10/1 Extensometers, or apparatus for observing the small deformation which a test-piece in tension or compression undergoes before its limit of elasticity is reached. 1925 E. S. Andrews Strength of Materials (ed. 2) 371 Extensometers are instruments for measuring the elastic strains of materials in tension or compression. 1950 Engineering 25 Aug. 172/3 Twin extensometers were mounted in a manner similar to that employed in tests on reinforced-concrete beams using the Lamb extensometer. 1958 New Scientist 15 May 38/3 Earth strains in the Andes are to be studied by..seismologists working with ‘extensometers’... The extensometer or strain-seismograph measures the differential motion between two nearby points, those at the ends of the instrument. The change of length between the two ends—which may either stretch or squeeze—divided by the original length gives the change in strain. 1966 New Scientist 23 June 796/2 A hydraulic extensometer sensitive to dimensional changes in the order of one part in 10 000. This entry has not yet been fully updated (first published 1933; most recently modified version published online March 2019). < n.1887
随便看	wheelengrave wheelengraved wheelengraver wheelengraving wheeler wheeler dog wheeler-dealer wheeler-dealing wheelerdealer wheelerdealing wheelerite wheelers wheelery wheelfarthingale wheelfire wheelflange wheelfooted wheelgoing wheelgrease wheelgreasing wheelguard wheelharrow wheelhead wheelhorse wheelhorses