FR2750498B1 - METHOD FOR ULTRASONIC MEASUREMENT OF THE RESIDUAL VOLTAGE OF A METAL PRE-STRESS BAR - Google Patents

METHOD FOR ULTRASONIC MEASUREMENT OF THE RESIDUAL VOLTAGE OF A METAL PRE-STRESS BAR

Info

Publication number
FR2750498B1
FR2750498B1 FR9608170A FR9608170A FR2750498B1 FR 2750498 B1 FR2750498 B1 FR 2750498B1 FR 9608170 A FR9608170 A FR 9608170A FR 9608170 A FR9608170 A FR 9608170A FR 2750498 B1 FR2750498 B1 FR 2750498B1
Authority
FR
France
Prior art keywords
residual voltage
ultrasonic measurement
metal pre
stress bar
stress
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.)
Expired - Lifetime
Application number
FR9608170A
Other languages
French (fr)
Other versions
FR2750498A1 (en
Inventor
Bruno Lancia
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.)
Freyssinet International STUP SA
Original Assignee
Freyssinet International STUP SA
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 Freyssinet International STUP SA filed Critical Freyssinet International STUP SA
Priority to FR9608170A priority Critical patent/FR2750498B1/en
Publication of FR2750498A1 publication Critical patent/FR2750498A1/en
Application granted granted Critical
Publication of FR2750498B1 publication Critical patent/FR2750498B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
FR9608170A 1996-07-01 1996-07-01 METHOD FOR ULTRASONIC MEASUREMENT OF THE RESIDUAL VOLTAGE OF A METAL PRE-STRESS BAR Expired - Lifetime FR2750498B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9608170A FR2750498B1 (en) 1996-07-01 1996-07-01 METHOD FOR ULTRASONIC MEASUREMENT OF THE RESIDUAL VOLTAGE OF A METAL PRE-STRESS BAR

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9608170A FR2750498B1 (en) 1996-07-01 1996-07-01 METHOD FOR ULTRASONIC MEASUREMENT OF THE RESIDUAL VOLTAGE OF A METAL PRE-STRESS BAR

Publications (2)

Publication Number Publication Date
FR2750498A1 FR2750498A1 (en) 1998-01-02
FR2750498B1 true FR2750498B1 (en) 1998-09-04

Family

ID=9493595

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9608170A Expired - Lifetime FR2750498B1 (en) 1996-07-01 1996-07-01 METHOD FOR ULTRASONIC MEASUREMENT OF THE RESIDUAL VOLTAGE OF A METAL PRE-STRESS BAR

Country Status (1)

Country Link
FR (1) FR2750498B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2801670B1 (en) 1999-11-29 2002-02-01 Freyssinet Intertional Stup METHOD FOR ULTRASONIC MEASUREMENT OF THE RESIDUAL VOLTAGE OF A PRE-STRESS BAR
GB0815038D0 (en) * 2008-08-18 2008-09-24 Seaman Peter Improvements in or relating to analysing structual memebers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4333351A (en) * 1980-02-25 1982-06-08 Raymond Engineering Inc. Method and apparatus for measuring the residual tension in a stud or a bolt
US4292835A (en) * 1980-02-25 1981-10-06 Raymond Engineering, Inc. Calibration apparatus and method for strain measuring instruments
FR2507232A1 (en) * 1981-06-09 1982-12-10 Freyssinet Int Stup Threaded concrete prestress member fastener - has fixed unit braced against all round movable spherically ended roller cage
LU84553A1 (en) * 1982-12-24 1984-10-22 Benoit De Halleux METHOD OF MEASURING CONSTRAINT IN A MEDIUM AND ELEMENT AND ASSEMBLY FOR IMPLEMENTING THE METHOD
PL152940B1 (en) * 1986-04-18 1991-02-28 Method of measuring internal steresses in material of an object under test
JP2944004B2 (en) * 1991-04-30 1999-08-30 日立建機株式会社 Ultrasonic bolt axial force measuring device

Also Published As

Publication number Publication date
FR2750498A1 (en) 1998-01-02

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