GB1451807A - Infinitesimal hardness value measuring - Google Patents
Infinitesimal hardness value measuringInfo
- Publication number
- GB1451807A GB1451807A GB5552773A GB5552773A GB1451807A GB 1451807 A GB1451807 A GB 1451807A GB 5552773 A GB5552773 A GB 5552773A GB 5552773 A GB5552773 A GB 5552773A GB 1451807 A GB1451807 A GB 1451807A
- Authority
- GB
- United Kingdom
- Prior art keywords
- indenter
- infinitesimal
- value
- intersection
- ihv
- 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
- 238000012360 testing method Methods 0.000 abstract 4
- 239000002253 acid Substances 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000001143 conditioned effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 238000007542 hardness measurement Methods 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000007373 indentation Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
-
- 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
- G01N2203/0286—Miniature specimen; Testing on microregions of a specimen
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
1451807 Hardness testing K M OESTERLE 29 Nov 1973 [4 Dec 1972] 55527/73 Heading G1S The infinitesimal hardness value (IHV) of plastics, coating and ductile materials has previously been determined using normal microhardness testers and by repeatedly moving and pressing a Vickers pyramid under varying loads on to the test piece for constant periods and recording the indentation depth y with reference to the corresponding load F, Fig. 1. The quotient F/y is then plotted against F and extrapolated to the limiting value F#O, the intersection between the extrapolated curve and the F/y ordinate axis then giving the IHV value. The method of the invention has the indenter penetrating under a varying load and employs an apparatus, Fig. 3, in which an indenter 2 controlled by electrical or mechanical means 3, 4 has its depth recorded by means 5. Signals representing the loads and the depths are amplified at 6, 8 and recorded at 9, which readings are used by a computer to find the point of intersection of the curve with the F/y axis. Tests may be performed in an air conditioned chamber into which test pieces are moved on a conveyer, or the test piece may be stressed mechanically or by heating or cooling, or subjection to acid or solvent vapours or corrosive gases. Further stresses may be applied electrically or magnetically or by many forms of radiation. The indenter may be a rotatable sphere, a knife-edged wheel or a star-shaped wheel.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1770772A CH559363A5 (en) | 1972-12-04 | 1972-12-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1451807A true GB1451807A (en) | 1976-10-06 |
Family
ID=4427467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5552773A Expired GB1451807A (en) | 1972-12-04 | 1973-11-29 | Infinitesimal hardness value measuring |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH559363A5 (en) |
| DE (1) | DE2357755C3 (en) |
| FR (1) | FR2209103B1 (en) |
| GB (1) | GB1451807A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2159962A (en) * | 1984-03-01 | 1985-12-11 | Page Wilson Corp | Digital materials hardness tester |
| CN110411868A (en) * | 2019-08-07 | 2019-11-05 | 河南省锅炉压力容器安全检测研究院 | A kind of mechanical strength testing device |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4312220A (en) * | 1979-10-17 | 1982-01-26 | King Tester Corporation | Portable hardness tester |
| CH657704A5 (en) * | 1982-01-25 | 1986-09-15 | Kurt Martin Oesterle Dr Ing | MEASURING HEAD FOR CARRYING OUT MICROMECHANICAL MEASUREMENTS ON THE SURFACES OF TEST OBJECTS. |
| DE3408554C2 (en) * | 1984-03-08 | 1994-02-17 | Helmut Fischer Gmbh & Co | Device for measuring the penetration behavior of a test specimen in a non-destructive substance to be tested |
| US4945490A (en) * | 1988-04-11 | 1990-07-31 | Biddle Jr Ernest L | Brinell hardness indicator with digital readout |
| DE3926676C2 (en) * | 1988-08-17 | 1995-10-19 | Gerhard Dipl Phys Dr Schmirler | Method for measuring the material properties of a body with regard to abrasion, wear resistance or hardness, and application of the method |
| DE3830816C2 (en) * | 1988-09-09 | 1997-04-30 | Instron Corp | Method and device for measuring the hardness of a test specimen |
| DE4232982C2 (en) * | 1992-10-01 | 1994-08-25 | Weinhold Wolfgang P M Sc Dipl | Method for determining the deformability of the surface of a measuring object |
| US8590367B2 (en) | 2011-08-31 | 2013-11-26 | King Tester Corporation | Portable Brinell hardness tester |
| US9568406B2 (en) | 2011-08-31 | 2017-02-14 | King Tester Corporation | Portable brinell hardness tester with stented through bore pumping chamber |
| USD729613S1 (en) | 2012-08-28 | 2015-05-19 | King Tester Corporation | Stroke limiter bracket |
-
1972
- 1972-12-04 CH CH1770772A patent/CH559363A5/xx not_active IP Right Cessation
-
1973
- 1973-11-20 DE DE19732357755 patent/DE2357755C3/en not_active Expired
- 1973-11-29 GB GB5552773A patent/GB1451807A/en not_active Expired
- 1973-12-03 FR FR7342998A patent/FR2209103B1/fr not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2159962A (en) * | 1984-03-01 | 1985-12-11 | Page Wilson Corp | Digital materials hardness tester |
| CN110411868A (en) * | 2019-08-07 | 2019-11-05 | 河南省锅炉压力容器安全检测研究院 | A kind of mechanical strength testing device |
| CN110411868B (en) * | 2019-08-07 | 2022-03-04 | 河南省锅炉压力容器安全检测研究院 | Mechanical strength testing device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2209103B1 (en) | 1975-03-21 |
| DE2357755C3 (en) | 1979-04-12 |
| DE2357755A1 (en) | 1974-06-27 |
| FR2209103A1 (en) | 1974-06-28 |
| DE2357755B2 (en) | 1978-08-03 |
| CH559363A5 (en) | 1975-02-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |