公开(公告)号：WO2022073967A1

公开(公告)日：2022-04-14

申请号：PCT/EP2021/077373

申请日：2021-10-05

Applicant: LM WIND POWER A/S ,  BLADE DYNAMICS LIMITED

Inventor： JØRGENSEN, Jeppe, Bjørn ,  NIELSEN, Ole ,  RAZEGHI, Rama

IPC: B29C70/86 ,  B29C70/54 ,  B29C70/44 ,  B29C70/52 ,  B29D99/00

Abstract: A precured fibrous composite strip (40) for a load-carrying structure, such as a spar cap, for a wind turbine blade (10) is described. The strip has a first longitudinal end (51) and a second longitudinal end (52), a first side (53) and a second side (54) with a width defined as the distance between the first side and the second side, and an upper surface (55) and a lower surface (56) with a thickness defined as the distance between the upper surface and the lower surface. The strip comprises a taper region (60) with a taper length at the first longitudinal end, wherein the taper region tapers in thickness towards the first longitudinal end and comprises: a first taper section (61) proximal to the first longitudinal end and having a first average taper angle, a third taper section (63) distal to the first longitudinal end and having a third average taper angle, and a second taper section (62) between the first taper section and the third taper section and having a second average taper angle, wherein the second average taper angle is larger than both the first average taper angle and the third average taper angle.

公开(公告)号：WO2022180159A1

公开(公告)日：2022-09-01

申请号：PCT/EP2022/054638

申请日：2022-02-24

Applicant: LM WIND POWER A/S

Inventor： JØRGENSEN, Jeppe, Bjørn ,  NIELSEN, Ole

IPC: B29C70/20 ,  B29C70/44 ,  B29C70/54 ,  B29D99/00 ,  F03D1/06 ,  B29L31/08

Abstract: The present invention relates to a pre-impregnated fibre sheet (20a, 20b) extending in a longitudinal direction and in a transverse direction and comprising a first fibre layer (21) forming part of an upper surface of the pre-impregnated fibre sheet and a second fibre layer (22) forming part of a lower surface of the pre-impregnated fibre sheet, wherein the first fibre layer is pre-impregnated with an adhesion promotor. The present invention further relates to methods of manufacturing a blade shell member or wind turbine blade comprising a pre-manufactured spar cap (100) and a number of pre- impregnated fibre sheets (20a, 20b) arranged to obtain an improved adherence between the blade shell (80) and pre-manufactured spar cap, particularly when the pre-manufactured spar cap is resin infused with vinyl ester or epoxy resin and the blade mould is resin infused with polyester.

公开(公告)号：WO2022112445A1

公开(公告)日：2022-06-02

申请号：PCT/EP2021/083048

申请日：2021-11-25

Applicant: LM WIND POWER A/S

Inventor： JØRGENSEN, Jeppe ,  JESPERSEN, Klavs ,  NIELSEN, Ole

IPC: B29C70/54 ,  B29C70/44 ,  B29D99/00 ,  B29C70/88

Abstract: The present disclosure relates to a flow-enhancing fabric (1) extending in a longitudinal direction (6) and in a transverse direction (8), the fabric comprising a plurality of fibre layers (10, 20) including a first fibre layer (10) and a second fibre layer (20) arranged upon each other, the first fibre layer (10) comprising a first plurality of fibre bundles oriented in parallel in a first fibre direction (16) and comprising a plurality of first glass fibre bundles (14) and a number of first carbon fibre bundles (13), and the second fibre layer comprising a second plurality of fibre bundles oriented in parallel in a second fibre direction (26) different from the first direction (16) and comprising a plurality of second glass fibre bundles (24) and a number of second carbon fibre bundles (23), so that at least a number of first carbon fibre bundles (13) intersect and contact a number of second carbon (23) fibre bundles, and the fabric further comprises a plurality of monofilaments (30) arranged between the first and second fibre layer along the transverse direction of the fabric, the plurality of monofilaments (30) each having a mutual spacing (31) between them.