FR2262295A1 - Ball indentation test - uses different radii of curvature to determine elastic limit changes in depth - Google Patents

Ball indentation test - uses different radii of curvature to determine elastic limit changes in depth

Info

Publication number
FR2262295A1
FR2262295A1 FR7405884A FR7405884A FR2262295A1 FR 2262295 A1 FR2262295 A1 FR 2262295A1 FR 7405884 A FR7405884 A FR 7405884A FR 7405884 A FR7405884 A FR 7405884A FR 2262295 A1 FR2262295 A1 FR 2262295A1
Authority
FR
France
Prior art keywords
curvature
depth
elastic limit
different radii
uses different
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
FR7405884A
Other languages
French (fr)
Other versions
FR2262295B1 (en
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.)
SKF Compagnie dApplications Mecaniques SA
Original Assignee
SKF Compagnie dApplications Mecaniques 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 SKF Compagnie dApplications Mecaniques SA filed Critical SKF Compagnie dApplications Mecaniques SA
Priority to FR7405884A priority Critical patent/FR2262295A1/en
Priority to GB2800374A priority patent/GB1476180A/en
Priority to DD179416A priority patent/DD114459A5/xx
Priority to DE2430272A priority patent/DE2430272C2/en
Priority to JP49072704A priority patent/JPS50116085A/ja
Priority to US05/483,022 priority patent/US3969928A/en
Publication of FR2262295A1 publication Critical patent/FR2262295A1/en
Priority to SU762372396A priority patent/SU897122A3/en
Application granted granted Critical
Publication of FR2262295B1 publication Critical patent/FR2262295B1/fr
Granted 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
    • G01N3/40—Investigating hardness or rebound hardness
    • G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
    • 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
    • G01N2203/0098—Tests specified by its name, e.g. Charpy, Brinnel, Mullen

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

Internal stresses and changes of the elastic limit of workpieces as functions of the depth under the surface can be determined without having to destroy any part of the workpiece. A ram with a hemispherical contact face of a specific radius of curvature is pressed against the workpiece surface with successively increased force until the plastic limit is reached. The surface deformation is measured and the principal stresses are calculated and recorded. The same test is repeated with different radii of curvature (60mm, 150mm, 200mm). The envelope of the curves of the principal stresses versus the penetration indicates the elastic limit as a function of the depth.
FR7405884A 1973-06-26 1974-02-21 Ball indentation test - uses different radii of curvature to determine elastic limit changes in depth Granted FR2262295A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7405884A FR2262295A1 (en) 1974-02-21 1974-02-21 Ball indentation test - uses different radii of curvature to determine elastic limit changes in depth
GB2800374A GB1476180A (en) 1973-06-26 1974-06-24 Determination of mechanical properties at each position on a member and the field of residual or elastic stresses occuring there
DD179416A DD114459A5 (en) 1973-06-26 1974-06-24
DE2430272A DE2430272C2 (en) 1973-06-26 1974-06-24 Procedure for non-destructive testing and determination of the residual stresses, the elastic stresses or the elastic limit
JP49072704A JPS50116085A (en) 1973-06-26 1974-06-25
US05/483,022 US3969928A (en) 1973-06-26 1974-06-25 Non-destructive testing method for determining a body's mechanical properties and stresses
SU762372396A SU897122A3 (en) 1973-06-26 1976-06-24 Method of determining mechanical stress in metallic part

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7405884A FR2262295A1 (en) 1974-02-21 1974-02-21 Ball indentation test - uses different radii of curvature to determine elastic limit changes in depth

Publications (2)

Publication Number Publication Date
FR2262295A1 true FR2262295A1 (en) 1975-09-19
FR2262295B1 FR2262295B1 (en) 1976-06-25

Family

ID=9135242

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7405884A Granted FR2262295A1 (en) 1973-06-26 1974-02-21 Ball indentation test - uses different radii of curvature to determine elastic limit changes in depth

Country Status (1)

Country Link
FR (1) FR2262295A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999061883A1 (en) * 1998-05-26 1999-12-02 Inventium Llc Method and apparatus for determining preexisting stresses based on indentation or other mechanical probing of the material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999061883A1 (en) * 1998-05-26 1999-12-02 Inventium Llc Method and apparatus for determining preexisting stresses based on indentation or other mechanical probing of the material
US6155104A (en) * 1998-05-26 2000-12-05 Subra Suresh Method and apparatus for determining preexisting stresses based on indentation or other mechanical probing of a material
US6311135B1 (en) 1998-05-26 2001-10-30 Inventium Llc Method and apparatus for determining preexisting stresses based on indentation or other mechanical probing of the material

Also Published As

Publication number Publication date
FR2262295B1 (en) 1976-06-25

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Legal Events

Date Code Title Description
ST Notification of lapse