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JPS56104232A - Apparatus for previously introducing fatigue crack to cod test piece for fatigue tester - Google Patents

Apparatus for previously introducing fatigue crack to cod test piece for fatigue tester

Info

Publication number
JPS56104232A
JPS56104232A JP585180A JP585180A JPS56104232A JP S56104232 A JPS56104232 A JP S56104232A JP 585180 A JP585180 A JP 585180A JP 585180 A JP585180 A JP 585180A JP S56104232 A JPS56104232 A JP S56104232A
Authority
JP
Japan
Prior art keywords
test pieces
load
transverse rod
fatigue
head
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
JP585180A
Other languages
Japanese (ja)
Other versions
JPS5831537B2 (en
Inventor
Taku Shiina
Yoshiaki Kato
Tadao Nakamura
Sadanobu Fukamizu
Michio Kawagoe
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP585180A priority Critical patent/JPS5831537B2/en
Publication of JPS56104232A publication Critical patent/JPS56104232A/en
Publication of JPS5831537B2 publication Critical patent/JPS5831537B2/en
Expired 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
    • G01N3/02—Details
    • 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
    • G01N2203/0298—Manufacturing or preparing 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)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

PURPOSE:To make it possible to introduce precracks to two test pieces simultaneously and improve efficiency of COD testing operation by mounting a transverse rod and two test pieces horizontally and perpendicularly to each other between the upper load head and the lower horizontal table. CONSTITUTION:When a load head (b) is lowered by the descent of an elevating head, the pressing down force of the load head (b) is divided into two by a transverse rod (c), and two test pieces (d) are pressed down by second load rollers 3 and 3' of the transverse rod (c). The position where the second load rollers 3 and 3' press down the test pieces (d) is located in the exact middle of the interval (m) between supporting rollers 1 and 1' on blocks 2 and 2'. Therefore, the precrack introducing operation is performed on the two test pieces (d) under equal pressures and equal supporting conditions. When the precracks reach a crack gauge (f) a signal is outputted to stop the pressing down.
JP585180A 1980-01-23 1980-01-23 Device for introducing fatigue pre-crack into COD test piece in fatigue test equipment Expired JPS5831537B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP585180A JPS5831537B2 (en) 1980-01-23 1980-01-23 Device for introducing fatigue pre-crack into COD test piece in fatigue test equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP585180A JPS5831537B2 (en) 1980-01-23 1980-01-23 Device for introducing fatigue pre-crack into COD test piece in fatigue test equipment

Publications (2)

Publication Number Publication Date
JPS56104232A true JPS56104232A (en) 1981-08-19
JPS5831537B2 JPS5831537B2 (en) 1983-07-06

Family

ID=11622491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP585180A Expired JPS5831537B2 (en) 1980-01-23 1980-01-23 Device for introducing fatigue pre-crack into COD test piece in fatigue test equipment

Country Status (1)

Country Link
JP (1) JPS5831537B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8878631B2 (en) 2006-11-27 2014-11-04 Thomas Licensing Active low pass filter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01117633U (en) * 1988-02-04 1989-08-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8878631B2 (en) 2006-11-27 2014-11-04 Thomas Licensing Active low pass filter

Also Published As

Publication number Publication date
JPS5831537B2 (en) 1983-07-06

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