RESONANCE GENERATING APPARATUS WITH REDUCED SIDE LOADS FOR A BLADE'S FATIGUE TESTING

摘要

A resonance generating apparatus for testing blade fatigue with reduced side load includes a mounting portion comprising a saddle including a groove corresponding to an external surface of a blade, and an assembling portion positioned on an external side of the saddle and joined by tightening members so that the saddle presses against the blade, a resonance generator including an actuator to generate a linear movement, a coupler(s) to maintain phase of a blade motion the same as an actuator rod, and a linear guide to guide a direction of linear reciprocating motion of an actuator body, and weights mounted on opposite faces of the actuator body to move in association therewith, and varied in a lengthwise direction of the blade so a center of gravity of moving masses of the actuator body in linear reciprocation and the additional weights is positioned on an axis of the actuator rod.

主权项

1. A resonance generating apparatus with reduced side loads for a blade's fatigue testing, comprising:
a mounting portion comprising a saddle, the saddle comprising a groove corresponding in form to an external surface of a blade, and an assembling portion positioned on an external side of the saddle and joined by tightening members so that the saddle presses against the blade; a resonance generator comprising an actuator configured to generate a linear movement, at least one coupler configured to maintain phase of a blade motion as the same as that of an actuator rod, and a linear guide configured to guide a direction of linear reciprocating motion of an actuator body; and additional weights mounted on two opposite faces of the actuator body to move in association therewith, and one of added or reduced in a lengthwise direction of the blade so that a center of gravity of moving masses in linear reciprocation including the actuator body and the additional weights is positioned on an axis of the actuator rod.