Abstract: A vibration test jig includes: a base installed on a vibration table, including a mounting surface on which the end of a test body is mounted; a top plate placed on the base with a gap therebetween, including a slot and a groove, the slot having an inner surface that presses the end of the test body toward the mounting surface, and the groove located in an extending direction of the slot and communicating with the slot; a wedge that is fit into the groove; and pressing members arranged along the slot and configured to press the top plate toward the base. An inner surface of the groove includes a bottom surface and holding surfaces located on both sides in a width direction of the groove and facing the bottom surface; and the wedge is in surface contact with the bottom surface and the pair of holding surfaces.

Abstract: A vibration test jig includes: a base installed on a vibration table, including a mounting surface on which the end of the test body is mounted; a top plate placed on the base with a gap therebetween, including a slot having an inner surface that presses the end of the test body toward the mounting surface; a reinforcing portion placed along the slot; and pressing members arranged along the slot and configured to press the reinforcing portion toward the base. A thickness of the reinforcing portion varies along the slot in accordance with a magnitude of a fluctuating load generated in the top plate during vibration thereof.

Abstract: Provided is a jig for a vibration test of a stator vane, for use in the vibration test for evaluating high cycle fatigue characteristics of the stator vane, and the jig is provided with a base plate that is fixed onto an excitation table of a shaker, a first fixed wall that is fixed onto the base plate in a state where a vane root end portion of a guide vane is fixed, a movable wall that is slidably placed on the base plate in a state where a vane tip portion of the guide vane is fixed, a second fixed wall that is fixed onto the base plate, and a hydraulic jack that is disposed between the movable wall and the second fixed wall, to apply a load in the span direction to the guide vane. Consequently, in the vibration test for evaluating the high cycle fatigue characteristics of the stator vane, the test simulating an actual operation state can be carried out, and an assumed deformed state can be exhibited in the stator vane to be subjected to the test.

Abstract: Provided is a jig for a vibration test of a rotor blade, for use in the vibration test for evaluating high cycle fatigue characteristics of the rotor blade for an aircraft engine, and the jig is provided with a jig body holding a dovetail portion of a fan blade and fixed onto an excitation table of a shaker, and a hydraulic jack that applies a load in a blade span direction to the fan blade to fix the fan blade to the jig body. Consequently, in the vibration test for evaluating the high cycle fatigue characteristics of the rotor blade, a test simulating an actual operation state can be carried out, the rotor blade can be efficiently excited to reach a large deformation region, and high cycle fatigue failure can occur without any increase in test cost.

Abstract: Provided is a jig for a vibration test of a rotor blade, for use in the vibration test for evaluating high cycle fatigue characteristics of the rotor blade for an aircraft engine, and the jig is provided with a jig body holding a dovetail portion of a fan blade and fixed onto an excitation table of a shaker, and a hydraulic jack that applies a load in a blade span direction to the fan blade to fix the fan blade to the jig body. Consequently, in the vibration test for evaluating the high cycle fatigue characteristics of the rotor blade, a test simulating an actual operation state can be carried out, the rotor blade can be efficiently excited to reach a large deformation region, and high cycle fatigue failure can occur without any increase in test cost.

Abstract: Provided is a jig for a vibration test of a stator vane, for use in the vibration test for evaluating high cycle fatigue characteristics of the stator vane, and the jig is provided with a base plate that is fixed onto an excitation table of a shaker, a first fixed wall that is fixed onto the base plate in a state where a vane root end portion of a guide vane is fixed, a movable wall that is slidably placed on the base plate in a state where a vane tip portion of the guide vane is fixed, a second fixed wall that is fixed onto the base plate, and a hydraulic jack that is disposed between the movable wall and the second fixed wall, to apply a load in the span direction to the guide vane. Consequently, in the vibration test for evaluating the high cycle fatigue characteristics of the stator vane, the test simulating an actual operation state can be carried out, and an assumed deformed state can be exhibited in the stator vane to be subjected to the test.