CA2196256A1 - Fastener Characterization with an Electromagnetic Acoustic Transducer - Google Patents

Fastener Characterization with an Electromagnetic Acoustic Transducer

Info

Publication number
CA2196256A1
CA2196256A1 CA2196256A CA2196256A CA2196256A1 CA 2196256 A1 CA2196256 A1 CA 2196256A1 CA 2196256 A CA2196256 A CA 2196256A CA 2196256 A CA2196256 A CA 2196256A CA 2196256 A1 CA2196256 A1 CA 2196256A1
Authority
CA
Canada
Prior art keywords
bolt
acoustic transducer
electromagnetic acoustic
characterization
fastener
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.)
Granted
Application number
CA2196256A
Other languages
French (fr)
Other versions
CA2196256C (en
Inventor
Daniel T. Maclauchlan
Wayne M. Latham
Steven P. Clark
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.)
Babcock and Wilcox Co
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2196256A1 publication Critical patent/CA2196256A1/en
Application granted granted Critical
Publication of CA2196256C publication Critical patent/CA2196256C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
    • G01L5/246—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed using acoustic waves
    • 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
    • G01L1/25—Measuring force or stress, in general using wave or particle radiation, e.g. X-rays, microwaves, neutrons
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B2031/022—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load using an ultrasonic transducer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/011—Velocity or travel time
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/01—Indexing codes associated with the measuring variable
    • G01N2291/015—Attenuation, scattering
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/02—Indexing codes associated with the analysed material
    • G01N2291/028—Material parameters
    • G01N2291/02827—Elastic parameters, strength or force
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/042—Wave modes
    • G01N2291/0423—Surface waves, e.g. Rayleigh waves, Love waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/10—Number of transducers
    • G01N2291/101—Number of transducers one transducer
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/269—Various geometry objects
    • G01N2291/2691—Bolts, screws, heads
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/269—Various geometry objects
    • G01N2291/2695—Bottles, containers

Abstract

A device for measuring a load on a part and for monitoring the integrity of the part such as a bolt, comprises a socket having walls defining an interior space wherein the socket engages the bolt for transmitting a load to the bolt.
An electromagnetic acoustic transducer comprising a magnet and a coil is located in the interior space of the socket near the bolt. The coil provides a current while the magnet provides a magnetic field such that the magnet and the coil generate an ultrasonic signal within the bolt. A detector is used to detect and measure a change in the ultrasonic signal at the bolt for measuring the load on the bolt and for detecting any flaws in the bolt.
CA002196256A 1996-01-30 1997-01-29 Fastener characterization with an electromagnetic acoustic transducer Expired - Fee Related CA2196256C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/594,051 1996-01-30
US08/594,051 US5675087A (en) 1994-02-15 1996-01-30 Fastener characterization with an electromagnetic acoustic transducer

Publications (2)

Publication Number Publication Date
CA2196256A1 true CA2196256A1 (en) 1997-07-31
CA2196256C CA2196256C (en) 2000-01-04

Family

ID=24377301

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002196256A Expired - Fee Related CA2196256C (en) 1996-01-30 1997-01-29 Fastener characterization with an electromagnetic acoustic transducer

Country Status (5)

Country Link
US (1) US5675087A (en)
EP (1) EP0787980B1 (en)
JP (1) JPH102884A (en)
CA (1) CA2196256C (en)
DE (1) DE69728310T2 (en)

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US20050208452A1 (en) * 2002-03-04 2005-09-22 Lang Brien R Method and apparatus for determining the preload for screws for dental implant systems
US6358051B2 (en) * 1999-12-07 2002-03-19 Brien R. Lang Method and apparatus for determining the preload for screws for dental implant systems
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DE10056859A1 (en) * 2000-11-16 2002-05-23 Emhart Inc Method for non-destructive testing of the quality of a joint between two or more plate type components, made using a cold jointing method, such as riveting, by monitoring of the sound generated during the jointing process
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US20090107260A1 (en) * 2007-10-24 2009-04-30 Thaddeus Schroeder Magnetostrictive strain sensor with single piece sensor cavity
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RU2589491C1 (en) * 2012-12-20 2016-07-10 Ниппон Стил Энд Сумитомо Метал Корпорейшн Method of analysing defects and device for investigation of defects
JP6128432B2 (en) * 2013-04-09 2017-05-17 三井造船株式会社 Anchor soundness inspection device and anchor soundness inspection method
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US9915574B2 (en) * 2014-03-11 2018-03-13 The Boeing Company Method and apparatus for measuring a preload of a fastener
US10175127B2 (en) 2014-05-05 2019-01-08 Covidien Lp End-effector force measurement drive circuit
US11428591B2 (en) 2014-05-05 2022-08-30 Covidien Lp End-effector force measurement drive circuit
US10345173B2 (en) * 2016-06-15 2019-07-09 Optech Ventures, Llc System, device and method for measurement of fastener loading
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CN109341912B (en) * 2018-11-13 2019-11-01 西南交通大学 A kind of ultrasonic wave plane voussoir is used for the residual stress measuring method of curve surface work pieces
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CN110824390B (en) * 2019-10-25 2021-04-27 成都航大新材料有限公司 Ferromagnetic material local stress distribution nondestructive testing device based on MDL
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Also Published As

Publication number Publication date
EP0787980B1 (en) 2004-03-31
CA2196256C (en) 2000-01-04
US5675087A (en) 1997-10-07
JPH102884A (en) 1998-01-06
DE69728310T2 (en) 2005-02-17
EP0787980A2 (en) 1997-08-06
EP0787980A3 (en) 1998-05-20
DE69728310D1 (en) 2004-05-06

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Legal Events

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