| 摘要 |
PCT No. PCT/CA94/00302 Sec. 371 Date Dec. 1, 1995 Sec. 102(e) Date Dec. 1, 1995 PCT Filed Jun. 3, 1994 PCT Pub. No. WO94/29669 PCT Pub. Date Dec. 22, 1994A method and apparatus for non-destructive testing of the load bearing characteristics of a structure are disclosed. An interferometer is supported by a beam which is supported away from the surface of the structure to be tested. The interferometer is used to measure a quantity which varies with the distance between the interferometer and a reflecting means supported on the location to be tested. The reflecting means is supported in such a manner as to move responsively with deformations to the said location, and is typically attached to a probe which is urged against the said location. Preferably a force is applied or varied near the location to be tested and comparisons are made over time or as the said force varies. Such a system does not damage the structure, and does not require complicated equipment or processing. |
