| 释义 |
Izod|ˈaɪzɒd|
The name of E. G. Izod (fl. 1903), British engineer, used attrib. with reference to a kind of impact test devised by him 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.
1904Proc. Inst. Mech. Engin. iv. 1225 A single-blow test of the Izod type. 1922Glazebrook Dict. Applied Physics I. 206/1 The brittleness in steel resulting from a high percentage of sulphur and phosphorus is well marked by the Izod test. Ibid., 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. 1939E. 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. 1954A. R. Bailey Text-bk. Metall. xiii. 457 The Izod test..is standard in Great Britain. 1968D. R. Cliffe Technical Metallurgy 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. |