JPS57540A - Method for measurement of yield stress of pipe - Google Patents

Method for measurement of yield stress of pipe

Info

Publication number
JPS57540A
JPS57540A JP7415580A JP7415580A JPS57540A JP S57540 A JPS57540 A JP S57540A JP 7415580 A JP7415580 A JP 7415580A JP 7415580 A JP7415580 A JP 7415580A JP S57540 A JPS57540 A JP S57540A
Authority
JP
Japan
Prior art keywords
pipe
cone
yield stress
radial direction
strains
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
JP7415580A
Other languages
Japanese (ja)
Inventor
Morikazu Ikuta
Tetsumi Kondo
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP7415580A priority Critical patent/JPS57540A/en
Publication of JPS57540A publication Critical patent/JPS57540A/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
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0262—Shape of the specimen
    • G01N2203/0274—Tubular or ring-shaped specimens

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

PURPOSE:To measure the yield stress of a pipe without being affected by the fluctuations in the coefft. of friction of a cone sliding surface by measuring the compressive stresses in the radial direction of the pipe acting upon a working tool disposed between the cone and the pipe. CONSTITUTION:Plural dies 3 engaging to jaws 2 are disposed radially around the cone 1 inserted into a pipe P. When the cone 1 is pulled by a hydraulic cylinder via a rod 4, the plural dies 3 disposed radially are moved in the outside diameter direction of the pipe by being forcibly expanded by the slope 6 of the cone 1, thereby expanding the pipe. During this expanding work, the dies 3, jaw 2, and spacers receive compressive forces as the reaction of the pipe expanding force, and these generate strains in accordance with the compressive stresses that they receive. These strains are measured by the strain gages 7 affixed to the working tool in such a manner as to detect the strains in the radial direction of the pipe, whereby the compressive stresses in the radial direction of the pipe are determined. Thereby, the yield stress is measured accurately without being affected by the coefft. of friction of the working tool.
JP7415580A 1980-06-04 1980-06-04 Method for measurement of yield stress of pipe Pending JPS57540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7415580A JPS57540A (en) 1980-06-04 1980-06-04 Method for measurement of yield stress of pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7415580A JPS57540A (en) 1980-06-04 1980-06-04 Method for measurement of yield stress of pipe

Publications (1)

Publication Number Publication Date
JPS57540A true JPS57540A (en) 1982-01-05

Family

ID=13538979

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7415580A Pending JPS57540A (en) 1980-06-04 1980-06-04 Method for measurement of yield stress of pipe

Country Status (1)

Country Link
JP (1) JPS57540A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6083155A (en) * 1983-10-14 1985-05-11 Hitachi Ltd Disk controller with cache
EP0740145A1 (en) * 1995-04-26 1996-10-30 Yamaha Hatsudoki Kabushiki Kaisha Method of and device for testing the bonding strength of a semi-finished valve seat
US5768779A (en) * 1995-09-14 1998-06-23 Yamaha Hatsudoki Kabushiki Kaisha Method of manufacturing cylinder head for engine
US5778531A (en) * 1995-09-14 1998-07-14 Yamaha Hatsudoki Kabushiki Kaisha Method of manufacturing cylinder head for engine
JP2019124474A (en) * 2018-01-12 2019-07-25 日本製鉄株式会社 Expanded tube evaluation method and expanded tube evaluation metal mold
JP2019124475A (en) * 2018-01-12 2019-07-25 日本製鉄株式会社 Expanded tube evaluation method, expanded tube evaluation metal mold and expanded tube evaluation tube
CN112858018A (en) * 2021-01-08 2021-05-28 青岛海洋地质研究所 Device and method for testing lateral pressure creep of hydrate-containing sediment

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53129154A (en) * 1977-04-18 1978-11-10 Nippon Kokan Kk <Nkk> Manufacture of large diameter thick steel tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53129154A (en) * 1977-04-18 1978-11-10 Nippon Kokan Kk <Nkk> Manufacture of large diameter thick steel tube

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6083155A (en) * 1983-10-14 1985-05-11 Hitachi Ltd Disk controller with cache
EP0740145A1 (en) * 1995-04-26 1996-10-30 Yamaha Hatsudoki Kabushiki Kaisha Method of and device for testing the bonding strength of a semi-finished valve seat
US5768779A (en) * 1995-09-14 1998-06-23 Yamaha Hatsudoki Kabushiki Kaisha Method of manufacturing cylinder head for engine
US5778531A (en) * 1995-09-14 1998-07-14 Yamaha Hatsudoki Kabushiki Kaisha Method of manufacturing cylinder head for engine
JP2019124474A (en) * 2018-01-12 2019-07-25 日本製鉄株式会社 Expanded tube evaluation method and expanded tube evaluation metal mold
JP2019124475A (en) * 2018-01-12 2019-07-25 日本製鉄株式会社 Expanded tube evaluation method, expanded tube evaluation metal mold and expanded tube evaluation tube
CN112858018A (en) * 2021-01-08 2021-05-28 青岛海洋地质研究所 Device and method for testing lateral pressure creep of hydrate-containing sediment

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