Damage tolerance cover sheet for prefabricated spar cap

• Main Authors: JORGENSEN JOHN B, NIELSEN OLE
• Format: Patent
• Language: Chinese; English
• Published: 19.07.2024
• Subjects: BLASTING; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

The present invention relates to a prefabricated spar cap for a wind turbine blade, comprising a spar cap structure comprising a plurality of fiber reinforced composite elements arranged in stacked rows and separated by interlayers; and a first damage tolerance cover sheet and/or a second damage tolerance cover sheet. The first damage-tolerant cover sheet and/or the second damage-tolerant cover sheet each includes a first damage-tolerant fibrous layer and a second damage-tolerant fibrous layer attached to each other in attachment regions, wherein the attachment regions are spaced from each other by a distance between 1-5 cm. Further, the spar cap structure and the first damage tolerance cover sheet and/or the second damage tolerance cover sheet are embedded in the first cured resin. The invention also relates to such a damage tolerance covering sheet, and to a wind turbine comprising a first damage tolerance covering sheet and/or a second damage tolerance covering sheet. Furthermore, the invention relates to