US 11,815,425 B2
Jig for vibration test of rotor blade
Kensuke Shiomi, Tokyo (JP); Kosuke Iwamoto, Tokyo (JP); Teruyoshi Otoyo, Tokyo (JP); Takashi Mori, Tokyo (JP); and Takaomi Inada, Tokyo (JP)
Assigned to IHI CORPORATION, Tokyo (JP)
Filed by IHI CORPORATION, Tokyo (JP)
Filed on Oct. 11, 2021, as Appl. No. 17/450,475.
Application 17/450,475 is a continuation of application No. PCT/JP2020/004942, filed on Feb. 7, 2020.
Claims priority of application No. 2019-076436 (JP), filed on Apr. 12, 2019.
Prior Publication US 2022/0026310 A1, Jan. 27, 2022
Int. Cl. G01M 15/14 (2006.01); F01D 5/26 (2006.01); F01D 5/30 (2006.01); G01M 7/02 (2006.01)
CPC G01M 15/14 (2013.01) [F01D 5/26 (2013.01); F01D 5/30 (2013.01); G01M 7/027 (2013.01)] 9 Claims
OG exemplary drawing
 
1. 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, comprising:
a jig body holding a dovetail portion of the rotor blade and fixed onto an excitation table of a shaker, and
a force applying section that applies a load in a span direction to the dovetail portion of the rotor blade to fix the rotor blade to the jig body, wherein
the force applying section includes a top plate and a plurality of bolts;
in the top plate, a holding groove is formed into which the dovetail portion of the rotor blade with a blade tip up is fitted from below; and
the plurality of bolts are arranged on opposite sides of the rotor blade on the jig body and screw portions of the plurality of bolts extend through the top plate and are screwed into screw holes of the jig body.