Izodn.

/ˈʌɪzɒd/

Etymology: < the name of E. G. Izod (fl. 1903), British engineer.

Used attributively with reference to a kind of impact test devised by E. G. Izod in which a notched specimen fixed at one end is broken by a blow from a pendulum hammer and the energy absorbed determined by the decrease in the swing of the pendulum.

ΘΚΠ

the world > matter > physics > mechanics > force > [noun] > instrument measuring > measuring force of impact

plegometer1839

Izod1904

1904 Inst. Mech. Engineers: Proc. iv. 1225 A single-blow test of the Izod type.

1922 R. Glazebrook Dict. Appl. Physics I. 206/1 The brittleness in steel resulting from a high percentage of sulphur and phosphorus is well marked by the Izod test.

1922 R. Glazebrook Dict. Appl. Physics I. 206/1 The form of notch selected, and sometimes called the Izod notch, is a 45° vee, 2 mm. deep, with a root radius of 0·25 mm.

1939 E. C. Rollason Metall. for Engineers i. 11 As a material with a low Izod figure offers a poor resistance to the development of a crack, a low Izod value indicates that in service there will be a greater chance of final failure before the crack is discovered.

1954 A. R. Bailey Text-bk. Metall. xiii. 457 The Izod test..is standard in Great Britain.

1968 D. R. Cliffe Techn. Metall. vii. 152 The Izod machine is a cantilever type with the knife-edge of the hammer striking the specimen at the horizontal at a point 22 mm above the plane of gripping.

This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2021).

单词	izod
释义	Izodn. /ˈʌɪzɒd/ Etymology: < the name of E. G. Izod (fl. 1903), British engineer. Used attributively with reference to a kind of impact test devised by E. G. Izod in which a notched specimen fixed at one end is broken by a blow from a pendulum hammer and the energy absorbed determined by the decrease in the swing of the pendulum. ΘΚΠ the world > matter > physics > mechanics > force > [noun] > instrument measuring > measuring force of impact plegometer1839 Izod1904 1904 Inst. Mech. Engineers: Proc. iv. 1225 A single-blow test of the Izod type. 1922 R. Glazebrook Dict. Appl. Physics I. 206/1 The brittleness in steel resulting from a high percentage of sulphur and phosphorus is well marked by the Izod test. 1922 R. Glazebrook Dict. Appl. Physics I. 206/1 The form of notch selected, and sometimes called the Izod notch, is a 45° vee, 2 mm. deep, with a root radius of 0·25 mm. 1939 E. C. Rollason Metall. for Engineers i. 11 As a material with a low Izod figure offers a poor resistance to the development of a crack, a low Izod value indicates that in service there will be a greater chance of final failure before the crack is discovered. 1954 A. R. Bailey Text-bk. Metall. xiii. 457 The Izod test..is standard in Great Britain. 1968 D. R. Cliffe Techn. Metall. vii. 152 The Izod machine is a cantilever type with the knife-edge of the hammer striking the specimen at the horizontal at a point 22 mm above the plane of gripping. This entry has not yet been fully updated (first published 1976; most recently modified version published online June 2021). < n.1904
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