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WIND BLADE PRE-ASSEMBLED SANDWICH CORE MATERIAL

IP.com Disclosure Number: IPCOM000236218D
Publication Date: 2014-Apr-12
Document File: 7 page(s) / 6M

Publishing Venue

The IP.com Prior Art Database

Abstract

The proposed invention combines small sections of the core material together into an assembly with a flexible backing material which acts as a hinge. Flexible backing material is a glass cloth or scrim which spans two or more core sections. The gloss cloth is used by the core material supplier to connect core material bricks to panels. The glass cloth is ironed onto the core material with heat activated glue. The flexible backing material is attached to top or bottom of the core surface with an adhesive such as thermally activated glue. Such attachment provides a flexible joint between the core sections. Such flexible joint allows the assembly to be rolled or stacked into a package for transport and handling.

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WIND BLADE PRE ASSEMBLED SANDWICH CORE MATERIAL

BRIEF ABSTRACT

The proposed invention combines small sections of the core material together into an assembly with a flexible backing material which acts as a hinge.  Flexible backing material is a glass cloth or scrim which spans two or more core sections.

The gloss cloth is used by the core material supplier to connect core material bricks to panels.  The glass cloth is ironed onto the core material with heat activated glue. The flexible backing material is attached to top or bottom of the core surface with an adhesive such as thermally activated glue. Such attachment provides a flexible joint between the core sections.  Such flexible joint allows the assembly to be rolled or stacked into a package for transport and handling.

KEYWORDS

Wind blade, core material, glass cloth, hinge, mold flow time, misplacement, shifted core material

DETAILED DESCRIPTION

            Core material is an important component of a wind blade structure.  Core material is received from a vendor in small section with have been machined to a desired shape and thickness. Sorting, positioning and layout of individual core material section are time consuming process during a shell fabrication. Misplacement or shifted core material results in waves and wrinkles to occur in a laminate. Such defects are not visible until after shell infusion which results in delays due to rework and reduced blade reliability.

 

Therefore, there is a need in the art for a technique to reduce rework and improve blade reliability.

            The proposed technique reduces mold flow time for a wind blade shell manufacturing.The proposed invention combines small sections of the core material together into an assembly with a flexible backing material which acts as a hinge. Flexible backing material is a glass cloth or scrim which spans two or more core sections. The gloss cloth is used by the core material supplier to connect core material bricks to panels. The glass cloth is ironed onto the core material with heat activated glue. The flexible backing material is attached to top or bottom of the core surface with an adhesive such as thermally activated glue. Such attachment provides a flexible joint between the core sections. Such flexible joint allows the assembly to be rolled or stacked into a package for transport and handling. Joining or assembly of the core material is done offline from a mold. When the core material is need in manufacturing the cor...