SACL

Stanford University Structures and Composites Laboratory

Stretchable Network Integration in Composite Structures

Raphaël NARDARI

Structures and Composites Laboratory (SACL) Department of Aeronautics and Astronautics

Stanford University

SACL

Stanford University Structures and Composites Laboratory

“Find a way to integrate in large-scale structures a sensor network with wires thinner than human hair”

Introduction

Nano/micro scale

Stretching to macro

Bio inspired sensor network

Multi-scale fabrication process

UAV

?INTEGRATION

SACL

Stanford University Structures and Composites Laboratory

“Develop an integration process for expandable sensor networks to add intelligence into composite structures”

Problem Statement

A350 composite fuselage

4” silicon wafer with a stretchable network

sensor network stretched

micro to macro scale

SACL

Stanford University Structures and Composites Laboratory

Method of Approach

Structural design - Definition of the geometry - Analytical study and FEM simulation - Material choice and layup optimization

Sensor network design - Definition of desired functionality - Sensor localization definition and

optimization

Smart structure manufacturing - Network integration in the layup - Utilization of insulation patch with some sensors/networks/carbon material

combination

SACL

Stanford University Structures and Composites Laboratory

•  Integration of the sensor network in a composite panel to validate the process

•  Monitoring of the composite curing process within an oven to check network survivability and response

Conclusion

Future works: Manufacture a smart UAV wing using the embedding technics developed.

This work is supported by : U.S. Air Force Office of Research (AFOSR) MURI program