JPS5752857A - Monitoring method for brittleness of zirconium alloy material - Google Patents

Monitoring method for brittleness of zirconium alloy material

Info

Publication number
JPS5752857A
JPS5752857A JP55127267A JP12726780A JPS5752857A JP S5752857 A JPS5752857 A JP S5752857A JP 55127267 A JP55127267 A JP 55127267A JP 12726780 A JP12726780 A JP 12726780A JP S5752857 A JPS5752857 A JP S5752857A
Authority
JP
Japan
Prior art keywords
wave
pressure tube
false
zirconium alloy
velocity
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
JP55127267A
Other languages
Japanese (ja)
Inventor
Tsutomu Masumoto
Mamoru Takeuchi
Tasuku Shimizu
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55127267A priority Critical patent/JPS5752857A/en
Priority to CA000385901A priority patent/CA1173569A/en
Publication of JPS5752857A publication Critical patent/JPS5752857A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • G01N29/07—Analysing solids by measuring propagation velocity or propagation time of acoustic 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
    • G01N2291/26—Scanned objects
    • G01N2291/269—Various geometry objects
    • G01N2291/2695—Bottles, containers

Abstract

PURPOSE:To measure the degree of brittleness of a zirconium alloy material with high accuracy in a short period of time, by detecting the velocity of a false AE wave transmitting through a pressure tube made of a zirconium alloy. CONSTITUTION:A sensor 14 for transmission equipped with a pressure tube 12 made of a zirconium alloy receives a pulse signal of 10-100Hz from a pulse generator 16 and make the pressure tube 12 generates a false AE wave. The false AE wave is received by sensors 18, 20 for reception being attached separated by a prescribed distance, and is inputted via preamplifiers 22, 24 through main amplifiers 26, 28 to a time difference measuring device 30 respectively. Using the time difference measuring device 30, an arrival time difference DELTAt of the AE wave to the receiving sensors 18, 20 is measured, and thereby the velocity of propagation of the false AE wave in pressure tube 12 is obtained. A ratio V/V0 between the velocity of propagation V0 of the dummy AE wave in the initial state of the pressure tube 12 and that of the false AE wave after operation is obtained and the amount of orientation of a hydride is obtained, allowing the degree of the weakening of the pressure tube 12 to be evaluated.
JP55127267A 1980-09-16 1980-09-16 Monitoring method for brittleness of zirconium alloy material Pending JPS5752857A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP55127267A JPS5752857A (en) 1980-09-16 1980-09-16 Monitoring method for brittleness of zirconium alloy material
CA000385901A CA1173569A (en) 1980-09-16 1981-09-15 Method of detecting hydrogen embrittlement of zirconium alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55127267A JPS5752857A (en) 1980-09-16 1980-09-16 Monitoring method for brittleness of zirconium alloy material

Publications (1)

Publication Number Publication Date
JPS5752857A true JPS5752857A (en) 1982-03-29

Family

ID=14955780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55127267A Pending JPS5752857A (en) 1980-09-16 1980-09-16 Monitoring method for brittleness of zirconium alloy material

Country Status (2)

Country Link
JP (1) JPS5752857A (en)
CA (1) CA1173569A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7563022B2 (en) 2003-11-28 2009-07-21 Ontario Power Generation Inc. Methods and apparatus for inspecting reactor pressure tubes

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53120585A (en) * 1977-03-30 1978-10-21 Toshiba Corp Remaining life measuring method of metal materials

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53120585A (en) * 1977-03-30 1978-10-21 Toshiba Corp Remaining life measuring method of metal materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7563022B2 (en) 2003-11-28 2009-07-21 Ontario Power Generation Inc. Methods and apparatus for inspecting reactor pressure tubes

Also Published As

Publication number Publication date
CA1173569A (en) 1984-08-28

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