| 摘要 |
Bushings (26,52,66,86) are provided that have a tubular portion that fits within an opening (38) in a work member (40) and a radial flange at each end of the tubular portion. All bushings (25,50,66,86) are installed in substantially the same way. A mandrel (M) is moved through the interior of the tubular portion of the bushing to radially and circumferentially expand the tubular portion of the bushing and move the flange sections against the opposite sidewalls of the work member (40). The tubular portion of the bushing is radially and circumferentially expanded an amount sufficient to introduce fatigue life enhancing compressive residual stresses in the work member (40) immediately around the opening (38) in the work member (40). <IMAGE> |
