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Title: Induction heating cells with cauls over mandrels methods of using thereof

Patent ·
OSTI ID:1823918

Disclosed herein are induction heating cells and methods of using these cells for processing. An induction heating cell may be used for processing (e.g., consolidating and/or curing a composite layup having a non-planar portion. The induction heating cell comprises a caul, configured to position over and conform to this non-planar portion. Furthermore, the cell comprises a mandrel, configured to position over the caul and force the caul again the surface of the feature. The CTE of the caul may be closer to the CTE of the composite layup than to the CTE of the mandrel. As such, the caul isolates the composite layup from the dimensional changes of the mandrel, driven by temperature fluctuations. At the same time, the caul may conform to the surface of the mandrel, which can be used to define the shape and transfer pressure to the non-planar portion.

Research Organization:
The Boeing Co., Chicago, IL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
EE0005780
Assignee:
The Boeing Company (Chicago, IL)
Patent Number(s):
10,994,450
Application Number:
16/843,596
OSTI ID:
1823918
Resource Relation:
Patent File Date: 04/08/2020
Country of Publication:
United States
Language:
English

References (8)

Metallic Bladders patent-application January 2015
Induction Heating Cells with Controllable Thermal Expansion of Bladders and Methods of Using Thereof patent-application June 2019
Consolidation of Complex Contoured Thermoplastic Structures patent-application May 2015
Induction heating cells with cauls over mandrels methods of using thereof patent May 2020
Induction Heating Cells with Cauls Over Mandrels Methods of Using Thereof patent-application June 2019
Ceramic die for induction heating work cells patent November 1997
Method and Apparatus for Forming Tooling and Associated Materials Therefrom patent-application February 2017
Multi-layer plies for improved composite performance patent-application December 2016