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Title: Health monitoring method for composite materials

Abstract

An in-situ method for monitoring the health of a composite component utilizes a condition sensor made of electrically conductive particles dispersed in a polymeric matrix. The sensor is bonded or otherwise formed on the matrix surface of the composite material. Age-related shrinkage of the sensor matrix results in a decrease in the resistivity of the condition sensor. Correlation of measured sensor resistivity with data from aged specimens allows indirect determination of mechanical damage and remaining age of the composite component.

Inventors:
 [1];  [2]
  1. (Dahlonega, GA)
  2. Hampton, VA
Issue Date:
Research Org.:
US Department of Energy (USDOE), Washington DC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1018216
Patent Number(s):
7924031
Application Number:
11/510,875
Assignee:
Watkins, Jr., Kenneth S. (Dahlonega, GA); Morris, Shelby J. (Hampton, VA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Watkins, Jr., Kenneth S., and Morris, Shelby J. Health monitoring method for composite materials. United States: N. p., 2011. Web.
Watkins, Jr., Kenneth S., & Morris, Shelby J. Health monitoring method for composite materials. United States.
Watkins, Jr., Kenneth S., and Morris, Shelby J. Tue . "Health monitoring method for composite materials". United States. https://www.osti.gov/servlets/purl/1018216.
@article{osti_1018216,
title = {Health monitoring method for composite materials},
author = {Watkins, Jr., Kenneth S. and Morris, Shelby J},
abstractNote = {An in-situ method for monitoring the health of a composite component utilizes a condition sensor made of electrically conductive particles dispersed in a polymeric matrix. The sensor is bonded or otherwise formed on the matrix surface of the composite material. Age-related shrinkage of the sensor matrix results in a decrease in the resistivity of the condition sensor. Correlation of measured sensor resistivity with data from aged specimens allows indirect determination of mechanical damage and remaining age of the composite component.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {4}
}

Patent:

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