| 摘要 |
PCT No. PCT/SE96/01173 Sec. 371 Date Mar. 20, 1998 Sec. 102(e) Date Mar. 20, 1998 PCT Filed Sep. 23, 1996 PCT Pub. No. WO97/11343 PCT Pub. Date Mar. 27, 1997A method for determining the axial load on an elongate member by measuring the differences in time of flight for transversely and longitudinally ultrasonic waves introduced in the elongate member under a zero load condition and at a current temperature and the time of flight for both of these types of waves introduced into the elongate member under the actual load condition, and calculating from these differences in the time of flight the actual load on the elongate member taking into account the influence of any occurring difference in temperature of the elongate member between the zero load condition time of flight measurement and the actual load condition time of flight measurement.
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