FR2235625A5 - 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 depthInfo
- Publication number
- FR2235625A5 FR2235625A5 FR7323319A FR7323319A FR2235625A5 FR 2235625 A5 FR2235625 A5 FR 2235625A5 FR 7323319 A FR7323319 A FR 7323319A FR 7323319 A FR7323319 A FR 7323319A FR 2235625 A5 FR2235625 A5 FR 2235625A5
- 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.)
- Expired
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.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7323319A FR2235625A5 (en) | 1973-06-26 | 1973-06-26 | Ball indentation test - uses different radii of curvature to determine elastic limit changes in depth |
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 |
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 | |
US05/483,022 US3969928A (en) | 1973-06-26 | 1974-06-25 | Non-destructive testing method for determining a body's mechanical properties and stresses |
JP49072704A JPS50116085A (en) | 1973-06-26 | 1974-06-25 | |
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 |
---|---|---|---|
FR7323319A FR2235625A5 (en) | 1973-06-26 | 1973-06-26 | Ball indentation test - uses different radii of curvature to determine elastic limit changes in depth |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2235625A5 true FR2235625A5 (en) | 1975-01-24 |
Family
ID=9121583
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7323319A Expired FR2235625A5 (en) | 1973-06-26 | 1973-06-26 | Ball indentation test - uses different radii of curvature to determine elastic limit changes in depth |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2235625A5 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2391695A1 (en) * | 1977-05-26 | 1978-12-22 | Boyer Edmond | Durometer for medical use - has air operated piston with pressure indicator and cone penetrator providing reading on dial gauge |
-
1973
- 1973-06-26 FR FR7323319A patent/FR2235625A5/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2391695A1 (en) * | 1977-05-26 | 1978-12-22 | Boyer Edmond | Durometer for medical use - has air operated piston with pressure indicator and cone penetrator providing reading on dial gauge |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |