US 12,188,447 B2
Chamfered strip and beam for a spar cap of a wind turbine blade
Mogens Nielsen, Aalborg (DK); and Wei Sun, Gistrup (DK)
Assigned to Siemens Gamesa Renewable Energy A/S, Brande (DK)
Appl. No. 18/283,907
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Mar. 3, 2022, PCT No. PCT/EP2022/055367
§ 371(c)(1), (2) Date Sep. 25, 2023,
PCT Pub. No. WO2022/207225, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 21166192 (EP), filed on Mar. 31, 2021.
Prior Publication US 2024/0167451 A1, May 23, 2024
Int. Cl. F03D 1/06 (2006.01)
CPC F03D 1/0681 (2023.08) [F05B 2280/6003 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A strip for a spar cap of a wind turbine blade, wherein the strip is made from a composite material comprising a matrix and a reinforcement,
wherein the strip comprises a first end region and a second end region connected to one another in a longitudinal direction of the strip by an intermediate region, wherein the intermediate region comprises two mutually opposed longitudinally extending and parallelly disposed intermediate surfaces, wherein a thickness of the strip is determinable perpendicular to the two intermediate surfaces and a width of the strip is determinable perpendicular to the longitudinal direction of the strip and perpendicular to the thickness of the strip,
wherein the strip is chamfered in at least one of the first and the second end regions, wherein in the at least one chamfered end region the strip is simultaneously chamfered along the width and the thickness in the longitudinal direction,
wherein the at least one chamfered end region has a first edge at the intermediate region and a second edge at its free end, wherein the first edge and the second edge are substantially parallel to one another,
wherein a width chamfer angle is determinable between the first edge of the strip and the longitudinal direction D, and wherein the width chamfer angle is different from 90°.