SG10201903121TA - Strain Sensitive Surfaces for Aircraft Structural Analysis and Health Monitoring - Google Patents

Strain Sensitive Surfaces for Aircraft Structural Analysis and Health Monitoring

Info

Publication number
SG10201903121TA
SG10201903121TA SG10201903121TA SG10201903121TA SG 10201903121T A SG10201903121T A SG 10201903121TA SG 10201903121T A SG10201903121T A SG 10201903121TA SG 10201903121T A SG10201903121T A SG 10201903121TA
Authority
SG
Singapore
Prior art keywords
grooves
geometric pattern
light
wavelength
health monitoring
Prior art date
Application number
Inventor
Gary Georgeson
Kenneth Griess
Russell Keller
Original Assignee
Boeing Co
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 Boeing Co filed Critical Boeing Co
Publication of SG10201903121TA publication Critical patent/SG10201903121TA/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
    • 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
    • G01L1/18—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
    • G01L1/183—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material by measuring variations of frequency of vibrating piezo-resistive material
    • 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
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • 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
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
    • G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0016—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of aircraft wings or blades
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
    • G01M5/0091—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by using electromagnetic excitation or detection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/55—Specular reflectivity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N2021/4735—Solid samples, e.g. paper, glass

Abstract

Strain Sensitive Surfaces for Aircraft Structural Analysis and Health Monitoring of the Disclosure A system comprising a geometric pattern of grooves on a structural component having a first set of grooves having a first groove width, a first illumination source projecting a first light at a first wavelength corresponding to the first groove width to create diffraction when the first light hits the geometric pattern of grooves and corresponding changes in wavelength of the light reflected from the geometric pattern of grooves indicating changes in the first groove width due to strain caused when the structural component is exposed to environmental conditions, a detector detecting the wavelength of the light reflected from the geometric pattern of grooves as the first illumination source illuminates the geometric pattern of grooves, and a processor connected to the detector for receiving the detected wavelength of the light from the detector and correlating the detected wavelength of the light from the geometric pattern of grooves to the strain. FIG. 5
SG10201903121T 2018-04-09 2019-04-08 Strain Sensitive Surfaces for Aircraft Structural Analysis and Health Monitoring SG10201903121TA (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15/948,582 US10801833B2 (en) 2018-04-09 2018-04-09 Strain sensitive surfaces for aircraft structural analysis and health monitoring

Publications (1)

Publication Number Publication Date
SG10201903121TA true SG10201903121TA (en) 2019-11-28

Family

ID=65493851

Family Applications (1)

Application Number Title Priority Date Filing Date
SG10201903121T SG10201903121TA (en) 2018-04-09 2019-04-08 Strain Sensitive Surfaces for Aircraft Structural Analysis and Health Monitoring

Country Status (6)

Country Link
US (1) US10801833B2 (en)
EP (1) EP3553464B1 (en)
JP (2) JP2019184579A (en)
KR (1) KR20190118110A (en)
CN (1) CN110360943B (en)
SG (1) SG10201903121TA (en)

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US11486697B1 (en) * 2017-12-29 2022-11-01 II John Tyson Optical structural health monitoring
US20200340802A1 (en) * 2017-12-29 2020-10-29 II John Tyson Optical structural health monitoring
US11243071B2 (en) * 2020-02-03 2022-02-08 The Boeing Company Sub-surface patterning for diffraction-based strain measurement and damage detection in structures
DE102020131668B4 (en) * 2020-11-30 2023-09-07 Audi Aktiengesellschaft Monitoring device for detecting a predetermined local deformation of a surface of a component and device with such a monitoring device
FR3124590B1 (en) * 2021-06-23 2024-01-26 Centre Nat Rech Scient Process for characterizing a mechanical part

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Also Published As

Publication number Publication date
JP2023165747A (en) 2023-11-17
US20190310076A1 (en) 2019-10-10
CN110360943A (en) 2019-10-22
EP3553464B1 (en) 2023-08-09
KR20190118110A (en) 2019-10-17
US10801833B2 (en) 2020-10-13
EP3553464A1 (en) 2019-10-16
CN110360943B (en) 2022-10-11
JP2019184579A (en) 2019-10-24

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