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IN-SITU PROCESS MONITORING OF AUTOCLAVE CONSOLIDATION THROUGH EMBEDDED FORCE POINT SENSORS

IP.com Disclosure Number: IPCOM000250276D
Publication Date: 2017-Jun-21
Document File: 2 page(s) / 28K

Publishing Venue

The IP.com Prior Art Database

Abstract

A technique for in-situ monitoring of autoclave consolidation through embedded force point sensors is disclosed. The technique allows tracking real-time contact load transferred between laminate plies and at multiple specific points of composite parts under typical autoclave processing conditions of heat, pressure and vacuum in a safe manner.

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IN-SITU PROCESS MONITORING OF AUTOCLAVE CONSOLIDATION THROUGH EMBEDDED FORCE POINT SENSORS

BACKGROUND

 

The present disclosure relates generally to autoclave consolidation of composite and more particularly to in-situ monitoring of autoclave consolidation through embedded force point sensors.

Currently, the autoclave consolidation of composite under heat and pressure provides zero direct visual and limited indirect access through thermocouple (TC), few pressure transducers and dielectric sensors to the part laminate during processing. The operator has access only to the before and after state of the material system, once the processing is completed.

It would be desirable to have an efficient technique for in-situ monitoring of autoclave consolidation through embedded force point sensors.

DETAILED DESCRIPTION

A technique for in-situ monitoring of autoclave consolidation through embedded force point sensors is disclosed. The technique allows tracking real-time contact load transferred between laminate plies and at multiple specific points of composite parts under typical autoclave processing conditions of heat, pressure and vacuum in a safe manner.

The technique uses embedded film-like force point sensors to track contact load within the laminates at multiple specific points of composite parts that are difficult to access. The force point sensors are thin, narrow and flexible and made up of kapton to withstand high temperature.

The sensors are hooked either directly to high temperature Teflon coated wires fed through an autoclave port or to high temperature ceramic terminal blocks within the autoclave. Then, the high temperature Teflon coated wires are fed through the autoclave port using a ...