| 摘要 |
A component such as a casing of a gas turbine engine has an array of holes 2, 4 distributed around a flange. The casing may distort when unsupported, but nevertheless the position accuracy of the holes 2, 4 may be checked by manipulating measured hole positions to lie with known deviations from a best-fit circle 10. The maximum load and stress required to bring the hole array into conformity with the best-fir circle 10 is calculated and compared with a predetermined maximum. The deviation of the hole positions 2C, 4C associated with the best-fit circle 10 from nominal positions can also be calculated. |
