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WO2024211307A8 - Compliant strain sensors - Google Patents

Compliant strain sensors Download PDF

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Publication number
WO2024211307A8
WO2024211307A8 PCT/US2024/022669 US2024022669W WO2024211307A8 WO 2024211307 A8 WO2024211307 A8 WO 2024211307A8 US 2024022669 W US2024022669 W US 2024022669W WO 2024211307 A8 WO2024211307 A8 WO 2024211307A8
Authority
WO
WIPO (PCT)
Prior art keywords
elements
strain sensors
conductive member
strain sensor
strain
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
PCT/US2024/022669
Other languages
French (fr)
Other versions
WO2024211307A1 (en
Inventor
Conor J. WALSH
Oluwaseun A. ARAROMI
Addison LIU
Robert J. Wood
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Harvard University
Original Assignee
Harvard University
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 Harvard University filed Critical Harvard University
Publication of WO2024211307A1 publication Critical patent/WO2024211307A1/en
Publication of WO2024211307A8 publication Critical patent/WO2024211307A8/en
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B1/00—Measuring instruments characterised by the selection of material therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
    • G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
    • G01L1/2287—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges constructional details of the strain gauges

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

A strain sensor comprising a conductive member having a plurality of elements arranged adjacent to one another, a non-viscoelastic elastomeric material encapsulating the conductive member, and a non-viscoelastic adhesive, wherein, in an unbiased state, compressive forces cause at least one of the plurality of elements to contact at least a portion of an adjacent element, and wherein, when a strain is applied, a resulting elastic deformation causes at least one of the plurality of elements to space apart from an adjacent element such that the contacted portion decreases or is eliminated. A method of fabricating said strain sensor is also described.
PCT/US2024/022669 2023-04-03 2024-04-02 Compliant strain sensors Pending WO2024211307A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202363456746P 2023-04-03 2023-04-03
US63/456,746 2023-04-03

Publications (2)

Publication Number Publication Date
WO2024211307A1 WO2024211307A1 (en) 2024-10-10
WO2024211307A8 true WO2024211307A8 (en) 2024-11-28

Family

ID=92972845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2024/022669 Pending WO2024211307A1 (en) 2023-04-03 2024-04-02 Compliant strain sensors

Country Status (1)

Country Link
WO (1) WO2024211307A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015143307A1 (en) * 2014-03-20 2015-09-24 The University Of Akron Flexible tactile sensors and method of making
WO2019226558A1 (en) * 2018-05-21 2019-11-28 President And Fellows Of Harvard College Ultra-sensitive compliant strain sensors
US12247847B2 (en) * 2020-07-29 2025-03-11 Bend Labs, Inc. Electrode and shielding systems and methods for compliant sensors

Also Published As

Publication number Publication date
WO2024211307A1 (en) 2024-10-10

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