JPS57120840A - Test piece for destructive testing - Google Patents

Test piece for destructive testing

Info

Publication number
JPS57120840A
JPS57120840A JP645581A JP645581A JPS57120840A JP S57120840 A JPS57120840 A JP S57120840A JP 645581 A JP645581 A JP 645581A JP 645581 A JP645581 A JP 645581A JP S57120840 A JPS57120840 A JP S57120840A
Authority
JP
Japan
Prior art keywords
test piece
opening
cracking
axis direction
diameter
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
JP645581A
Other languages
Japanese (ja)
Inventor
Kenji Sakano
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP645581A priority Critical patent/JPS57120840A/en
Publication of JPS57120840A publication Critical patent/JPS57120840A/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
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

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 the stopping of the progression of a cracking during the course thereof possible in destructive testing by opening a through-hole of a circular shape in the central part of a rectangular test piece, providing a sharp notch on the extension of the diameter in the long side direction of said hole, and applying compressive load in the long side direction. CONSTITUTION:A rectangular test piece of which the length L in the y-axis direction is 2-5 times the width W in the x-axis direction is made and an opening 2 of a circular shape is penetrated in the central part. The diameter 2R of the opening 2 is set at 5-50mm., and the width W of the test piece at 2-15 times the 2R. In the end part of the diameter of the opening 2 in its y-axis direction, a sharp notch 3 of <=0.1mm. the radius of the leading end and the length about 0.2 times the 2R is worked on the y-axis. When compressive load sigma is loaded in the y-axis direction of this test piece, a cracking 5 is generated in the leading end part of the notch 3 and develops. At this time, the relations among the sigma, the cracking length (a), the coefft. K of stress expansion and the radius R are as shown in the figure, and if the a/R exceeds about 0.2, the K decreases with an increase in the (a). Hence, when constant load is applied, the progression speed of the cracking decreases gradually and stops on the way.
JP645581A 1981-01-21 1981-01-21 Test piece for destructive testing Pending JPS57120840A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP645581A JPS57120840A (en) 1981-01-21 1981-01-21 Test piece for destructive testing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP645581A JPS57120840A (en) 1981-01-21 1981-01-21 Test piece for destructive testing

Publications (1)

Publication Number Publication Date
JPS57120840A true JPS57120840A (en) 1982-07-28

Family

ID=11638900

Family Applications (1)

Application Number Title Priority Date Filing Date
JP645581A Pending JPS57120840A (en) 1981-01-21 1981-01-21 Test piece for destructive testing

Country Status (1)

Country Link
JP (1) JPS57120840A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015530570A (en) * 2012-09-04 2015-10-15 スネクマ A method for determining the non-propagation threshold of fatigue cracks at high frequencies.
CN110031328A (en) * 2019-04-23 2019-07-19 湖北汽车工业学院 A kind of in-situ compression sample for high-temperature laser Laser Scanning Confocal Microscope

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015530570A (en) * 2012-09-04 2015-10-15 スネクマ A method for determining the non-propagation threshold of fatigue cracks at high frequencies.
CN110031328A (en) * 2019-04-23 2019-07-19 湖北汽车工业学院 A kind of in-situ compression sample for high-temperature laser Laser Scanning Confocal Microscope
CN110031328B (en) * 2019-04-23 2023-11-28 湖北广奥减振器制造有限公司 In-situ compression sample for high-temperature laser confocal microscope

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