GB1481698A – Methods of and apparatus for measuring properties of materials
– Google Patents
GB1481698A – Methods of and apparatus for measuring properties of materials
– Google Patents
Methods of and apparatus for measuring properties of materials
Info
Publication number
GB1481698A
GB1481698A
GB17846/74A
GB1784674A
GB1481698A
GB 1481698 A
GB1481698 A
GB 1481698A
GB 17846/74 A
GB17846/74 A
GB 17846/74A
GB 1784674 A
GB1784674 A
GB 1784674A
GB 1481698 A
GB1481698 A
GB 1481698A
Authority
GB
United Kingdom
Prior art keywords
transducer
counter
signal
frequency
store
Prior art date
1973-11-15
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
Application number
GB17846/74A
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.)
Krautkraemer GmbH and Co
Krautkraemer GmbH
Original Assignee
Krautkraemer GmbH and Co
Krautkraemer GmbH
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.)
1973-11-15
Filing date
1974-10-24
Publication date
1977-08-03
1974-10-24
Application filed by Krautkraemer GmbH and Co, Krautkraemer GmbH
filed
Critical
Krautkraemer GmbH and Co
1977-08-03
Publication of GB1481698A
publication
Critical
patent/GB1481698A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G01—MEASURING; TESTING
G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
G01N29/04—Analysing solids
G01N29/12—Analysing solids by measuring frequency or resonance of acoustic waves
G—PHYSICS
G01—MEASURING; TESTING
G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
G01H13/00—Measuring resonant frequency
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
G01N3/405—Investigating hardness or rebound hardness by determining the vibration frequency of a sensing element in contact with the specimen
G—PHYSICS
G01—MEASURING; TESTING
G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
G01N2291/00—Indexing codes associated with group G01N29/00
G01N2291/02—Indexing codes associated with the analysed material
G01N2291/028—Material parameters
G01N2291/02827—Elastic parameters, strength or force
Abstract
1481698 Measuring hardness KRAUTKRAMER GmbH 24 Oct 1974 [15 Nov 1973] 17846/74 Heading G1G A contact impedance method of measuring physical properties of materials e.g. modulus of elasticity, Poisson’s Ratio and hardness using an ultrasonic transducer excitable at its resonant frequency is described. Magnetostrictive transducer 1 is energized by an exciter circuit 2 which, by means of coils 3, 4, causes the transducer to vibrate at its resonant frequency. A mechanical switch 6 determines whether or not the transducer indenting tip 5, of e.g. diamond, is in contact with specimen 9. Control unit 8 receives a signal 7 indicating whether the former or latter condition obtains. When transducer 1 is not in contact with the specimen 9, up/down counter 11 is gated by variable gater 13 to measure the transducer frequency. The count at the end of the gate signal is proportional to the frequency. A scale adjustment is provided by unit 14. Control unit 8 controls; by signal 15, the gate signal repitition frequency; by signal 16 the counting direction of up/down counter 11; signal 17, erasure of the counter contents; signals 18, 21, the data flow between counter 11 and store 19. At the end of each count store 19 stores the counter 11 output. Before the hardness measurement, counter 11 counts the frequency of the freely oscillating transducer, counting in the down direction, and repetitively, under the control of the gating signal, the measured value constantly up dating store 19. To perform the hardness measurement, the indenter 5 is brought into contact with specimen 9 by constant test load 27. Counter 11 is pre-set to the last zero measurement counted as stored in store 19 and counts upward at the new resonant frequency of transducer 1. The difference count remaining in counter 11 is used to address ROM 23 which provides a preprogrammed output signal to indicator 25, and may employ different hardness scales e.g. Rockwell or Vickers.
GB17846/74A
1973-11-15
1974-10-24
Methods of and apparatus for measuring properties of materials
Expired
GB1481698A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE2357033A
DE2357033C2
(en)
1973-11-15
1973-11-15
Device for measuring material properties, in particular hardness, according to a contact impedance method
Publications (1)
Publication Number
Publication Date
GB1481698A
true
GB1481698A
(en)
1977-08-03
Family
ID=5898178
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB17846/74A
Expired
GB1481698A
(en)
1973-11-15
1974-10-24
Methods of and apparatus for measuring properties of materials
Country Status (7)
Country
Link
US
(1)
US3955404A
(en)
JP
(1)
JPS5751608B2
(en)
DE
(1)
DE2357033C2
(en)
ES
(1)
ES421626A1
(en)
FR
(1)
FR2251822B1
(en)
GB
(1)
GB1481698A
(en)
IT
(1)
IT1015762B
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0867708A1
(en)
*
1997-02-26
1998-09-30
Massachusetts Institute Of Technology
Method and apparatus for determination of mechanical properties of functionally-graded materials
US6641893B1
(en)
1997-03-14
2003-11-04
Massachusetts Institute Of Technology
Functionally-graded materials and the engineering of tribological resistance at surfaces
Families Citing this family (19)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB1506164A
(en)
*
1974-07-09
1978-04-05
Mullard Ltd
Ultrasonic bonding apparatus
CH628137A5
(en)
*
1977-09-27
1982-02-15
Meseltron Sa
MEASURING METHOD USING A MEASURING HEAD OF A MEASURING MACHINE AND MEASURING HEAD FOR CARRYING OUT THIS METHOD.
US4294121A
(en)
*
1978-06-06
1981-10-13
Inoue-Japax Research Incorporated
Position measuring system
FR2435029A1
(en)
*
1978-08-31
1980-03-28
Oreal
METHOD FOR MEASURING AT LEAST ONE MECHANICAL CHARACTERISTIC OF AN ELASTIC MATERIAL AND APPARATUS THEREOF
US4455863A
(en)
*
1982-03-29
1984-06-26
Consolidated Natural Gas Service Company
Sonic detection of gas leaks in underground pipes
DE3329690C1
(en)
*
1983-08-17
1985-04-11
Krautkrämer GmbH, 5000 Köln
Method and circuit device for hardness measurement according to the contact impedance method
JPS6078320U
(en)
*
1983-11-04
1985-05-31
アジナ技研株式会社
Sphere alignment moving device
EP0181131A3
(en)
*
1984-11-01
1987-05-20
Kent Scientific and Industrial Projects Limited
Apparatus for detecting the resonant frequency of a bone
DE3504535C1
(en)
*
1985-02-11
1986-07-10
Krautkrämer GmbH, 5000 Köln
Procedure for determining the hardness of solid bodies
US4702110A
(en)
*
1985-06-20
1987-10-27
J. A. Green Company
Method and apparatus for measuring metal hardness utilizing longitudinal and transverse ultrasonic wave time-of-flight
DE3720625A1
(en)
*
1987-06-23
1989-01-05
Krautkraemer Gmbh
HARDNESS TEST DEVICE FOR HARDNESS TESTING UNDER LOAD
DE3843588C2
(en)
*
1988-12-23
1998-04-09
Krautkraemer Gmbh
Hardness tester for hardness testing under load and method for adjusting such a hardness tester
DE3934578C2
(en)
*
1989-10-17
2000-02-10
Krautkraemer Gmbh
Method for hardness testing of series parts with low mechanical reactance
CH680094A5
(en)
*
1990-04-06
1992-06-15
Fischer Ag Georg
US5205173A
(en)
*
1991-06-21
1993-04-27
Palmer Environmental Services
Method and apparatus for detecting leaks in pipelines using cross-correlation techniques
US5359879A
(en)
*
1992-11-04
1994-11-01
Martin Marietta Energy Systems, Inc.
Scanning micro-sclerometer
SG86332A1
(en)
*
1998-09-19
2002-02-19
Univ Singapore
In-situ non destructive elastic recovery tester
DE102012100958A1
(en)
*
2012-02-06
2013-08-08
Herrmann Ultraschalltechnik Gmbh & Co. Kg
Test method for determining parameter for ultrasonic processing of plastic material, involves providing test specimen, ultrasonic horn and penetrating tip, where penetrating tip is moved in direction of test specimen
DE102013109504B4
(en)
*
2013-08-30
2016-07-14
Technische Universität Wien
Mechanical test method for components of electronics
Family Cites Families (8)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3153338A
(en)
*
1961-11-22
1964-10-20
Kleesattel Claus
Resonant sensing devices
US3307393A
(en)
*
1963-12-23
1967-03-07
Ingersoll Rand Co
Stress measuring device
US3308476A
(en)
*
1964-01-21
1967-03-07
Kleesattel Claus
Resonant sensing devices
US3302454A
(en)
*
1964-10-08
1967-02-07
Kleesattel Claus
Resonant sensing devices
US3323352A
(en)
*
1965-01-04
1967-06-06
Branson Instr
Control circuit for resonant sensing device
US3365937A
(en)
*
1965-01-26
1968-01-30
Branson Instr
Resonant sensing device
US3472063A
(en)
*
1967-04-17
1969-10-14
Branson Instr
Resonant sensing device
US3595069A
(en)
*
1969-02-14
1971-07-27
Panametrics
Ultrasonic sensing system
1973
1973-11-15
DE
DE2357033A
patent/DE2357033C2/en
not_active
Expired
1973-12-19
ES
ES421626A
patent/ES421626A1/en
not_active
Expired
1974
1974-04-08
JP
JP49038940A
patent/JPS5751608B2/ja
not_active
Expired
1974-04-23
FR
FR7414074A
patent/FR2251822B1/fr
not_active
Expired
1974-07-09
IT
IT24932/74A
patent/IT1015762B/en
active
1974-10-15
US
US05/514,704
patent/US3955404A/en
not_active
Expired – Lifetime
1974-10-24
GB
GB17846/74A
patent/GB1481698A/en
not_active
Expired
Cited By (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0867708A1
(en)
*
1997-02-26
1998-09-30
Massachusetts Institute Of Technology
Method and apparatus for determination of mechanical properties of functionally-graded materials
US5999887A
(en)
*
1997-02-26
1999-12-07
Massachusetts Institute Of Technology
Method and apparatus for determination of mechanical properties of functionally-graded materials
US6641893B1
(en)
1997-03-14
2003-11-04
Massachusetts Institute Of Technology
Functionally-graded materials and the engineering of tribological resistance at surfaces
Also Published As
Publication number
Publication date
JPS5081382A
(en)
1975-07-02
US3955404A
(en)
1976-05-11
FR2251822A1
(en)
1975-06-13
DE2357033C2
(en)
1982-05-13
IT1015762B
(en)
1977-05-20
JPS5751608B2
(en)
1982-11-02
ES421626A1
(en)
1976-07-01
DE2357033A1
(en)
1975-05-22
FR2251822B1
(en)
1977-10-21
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Legal Events
Date
Code
Title
Description
1977-12-14
PS
Patent sealed [section 19, patents act 1949]
1989-06-14
PCNP
Patent ceased through non-payment of renewal fee
