WO2005081930A3 - Heath monitoring method and apparatus for composite materials - Google Patents

Heath monitoring method and apparatus for composite materials Download PDF

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Publication number
WO2005081930A3
WO2005081930A3 PCT/US2005/005604 US2005005604W WO2005081930A3 WO 2005081930 A3 WO2005081930 A3 WO 2005081930A3 US 2005005604 W US2005005604 W US 2005005604W WO 2005081930 A3 WO2005081930 A3 WO 2005081930A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
composite
composite materials
monitoring method
matrix
Prior art date
Application number
PCT/US2005/005604
Other languages
French (fr)
Other versions
WO2005081930A2 (en
Inventor
Kenneth S Watkins Jr
Shelby J Morris
Original Assignee
Polymer Aging Concepts Inc
Kenneth S Watkins Jr
Shelby J Morris
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Polymer Aging Concepts Inc, Kenneth S Watkins Jr, Shelby J Morris filed Critical Polymer Aging Concepts Inc
Priority to EP05723488A priority Critical patent/EP1725859A4/en
Publication of WO2005081930A2 publication Critical patent/WO2005081930A2/en
Publication of WO2005081930A3 publication Critical patent/WO2005081930A3/en
Priority to US11/510,875 priority patent/US7924031B2/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/44—Resins; Plastics; Rubber; Leather
    • G01N33/442—Resins; Plastics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

An in-situ method for monitoring the heath of a composite component (103) as depicted on Figure 1 utilizes a condition sensor (101) made of electrically conductive particles (109) dispersed in a polymeric matrix (111). 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 specimen allows indirect determination of mechanical properties and remaining age of the composite polymeric material.
PCT/US2005/005604 2004-02-24 2005-02-23 Heath monitoring method and apparatus for composite materials WO2005081930A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05723488A EP1725859A4 (en) 2004-02-24 2005-02-23 Heath monitoring method and apparatus for composite materials
US11/510,875 US7924031B2 (en) 2005-02-23 2006-08-23 Health monitoring method for composite materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54732704P 2004-02-24 2004-02-24
US60/547,327 2004-02-24

Publications (2)

Publication Number Publication Date
WO2005081930A2 WO2005081930A2 (en) 2005-09-09
WO2005081930A3 true WO2005081930A3 (en) 2006-03-09

Family

ID=34910886

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/005604 WO2005081930A2 (en) 2004-02-24 2005-02-23 Heath monitoring method and apparatus for composite materials

Country Status (2)

Country Link
EP (1) EP1725859A4 (en)
WO (1) WO2005081930A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7659728B1 (en) 2006-08-23 2010-02-09 Watkins Jr Kenneth S Method and apparatus for measuring degradation of insulation of electrical power system devices
US7612325B1 (en) 2007-08-22 2009-11-03 Watkins Jr Kenneth S Electrical sensor for monitoring degradation of products from environmental stressors
DE102011115812B4 (en) * 2011-10-13 2016-08-11 Bayern-Chemie Gesellschaft Für Flugchemische Antriebe Mbh Procedure for lifetime monitoring of rockets and accompanying sample to carry out the same
FR3038710B1 (en) * 2015-07-10 2021-05-28 Cpc Tech SENSOR WITH A PHYSICAL CHARACTERISTIC, PREFERABLY INCLUDING A MULTI-LAYER STRUCTURE
CN108473042B (en) 2015-12-07 2022-07-19 德纳重型车辆系统集团有限责任公司 Distributed powertrain architecture for commercial vehicles having hybrid powertrains and dual range disconnect axles
EP3436301B1 (en) 2016-03-28 2022-05-04 Dana Heavy Vehicle Systems Group, LLC Single electric motor drive axle with multiple ratios
IL247408B (en) 2016-08-21 2018-03-29 Elbit Systems Ltd System and method for detecting weakening of the adhesion strength between structural elements

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000356660A (en) * 1999-06-15 2000-12-26 Toshiba Corp Deteriorated state diagnosis method of insulator
WO2003076953A2 (en) * 2002-03-06 2003-09-18 Bpw, Inc. An electrical condition monitoring method for polymers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5111025A (en) * 1990-02-09 1992-05-05 Raychem Corporation Seat heater
US5554679A (en) * 1994-05-13 1996-09-10 Cheng; Tai C. PTC conductive polymer compositions containing high molecular weight polymer materials
JP3625348B2 (en) * 1996-12-10 2005-03-02 Ｔｄｋ株式会社 Moisture sensitive element
US6491849B1 (en) * 2001-01-22 2002-12-10 General Cable Technologies Corp. High performance power cable shield

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000356660A (en) * 1999-06-15 2000-12-26 Toshiba Corp Deteriorated state diagnosis method of insulator
WO2003076953A2 (en) * 2002-03-06 2003-09-18 Bpw, Inc. An electrical condition monitoring method for polymers

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
GROVE ET AL: "Assessment of cable aging using condition monitoring techniques", ICONE-8, PROCEED. INTERN. CONF. NUCL. ENG., 2 April 2000 (2000-04-02) - 6 April 2000 (2000-04-06), pages 1 - 11, XP002988568 *
MUKHOPADHYAY ET AL: "Use of thermistors as thermal aging monitors", INDIAN JOURNAL OF TECHNOLOGY, vol. 11, no. 11, 1971, pages 411 - 415, XP008083330 *
See also references of EP1725859A4 *
SUN ET AL: "Electrical and mechanical properties of carbon black filled ethylene propylene rubber during thermal oxidation aging", 53RD PROCEED.- ELECTRONIC COMPONENTS & TECHNOLOGY CONFERENCE, 2003, pages 1644 - 1647, XP010647983 *
SUN ET AL: "te electrical approach to monitor wire cable thermal oxidation aging condition based on carbon black filled conductive polymer composite", J. OF APPLIED POLYMER SCIENCE, vol. 93, no. 2, 15 July 2004 (2004-07-15), pages 513 - 520, XP002988567 *
WU ET AL: "A delay of perculation time in carbon-black-filled conductive polymer composites", J.APPL.PHYS., vol. 88, no. 3, 1 August 2000 (2000-08-01), pages 1480 - 1487, XP012051281 *

Also Published As

Publication number Publication date
EP1725859A2 (en) 2006-11-29
EP1725859A4 (en) 2007-10-17
WO2005081930A2 (en) 2005-09-09

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