KR101670760B1 - Apparatus for Indentation Test - Google Patents
Apparatus for Indentation Test Download PDFInfo
- Publication number
- KR101670760B1 KR101670760B1 KR1020150046126A KR20150046126A KR101670760B1 KR 101670760 B1 KR101670760 B1 KR 101670760B1 KR 1020150046126 A KR1020150046126 A KR 1020150046126A KR 20150046126 A KR20150046126 A KR 20150046126A KR 101670760 B1 KR101670760 B1 KR 101670760B1
- Authority
- KR
- South Korea
- Prior art keywords
- coupled
- push rod
- sensor assembly
- sensor
- scale bar
- Prior art date
Links
Images
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
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/18—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring depth
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
- G01L5/0038—Force sensors associated with force applying means applying a pushing force
-
- 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
- G01N2203/0001—Type of application of the stress
- G01N2203/001—Impulsive
-
- 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
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
-
- 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
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0078—Hardness, compressibility or resistance to crushing using indentation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a sensor assembly comprising a sensor assembly main body, a pressure particle coupled to a lower end of a sensor assembly body, a lifting / lowering device coupled to an upper end of a sensor assembly main body, A push rod which is coupled to the sensor assembly body so as to measure a depth at which the indenter is press-fitted into the measurement specimen, a push rod which is slidably inserted and guided by the guide, the end of which is supported by the measurement specimen, And a displacement sensor coupled to the sensor assembly body and having a displacement sensor for sensing the position of the scale bar.
Description
The present invention relates to an indentation tester. More specifically, the present invention is applicable to a wide range of specimens ranging from a small area to a large structure such as a thin film or a micro device used in an indentation test while advantageously evaluating mechanical properties by reducing a displacement measurement error caused by vibration and resonance during an indentation test The present invention relates to an indentation tester capable of enabling a tester to perform an inspection.
In general, the method of evaluating material properties using an indentation tester is currently attracting considerable attention. The great advantage of the method using an indentation tester is that preparation of the test piece is very simple.
In the case of the standard test method for measuring the material properties, such as tensile test, it is very difficult to precisely measure the deformation amount of the specimen, to process the specimen, to mount it on the material testing machine, It is not easy to do.
On the other hand, the indentation tester is a method for evaluating the physical properties of a material by precisely measuring the load and displacement while infiltrating the indenter into the material, and it is frequently used for evaluation of material properties have.
In addition, the residual stress generated by a predetermined deformation or thermal stress of the material lowers the mechanical properties such as the fatigue strength and the fracture property of the material, and causes problems such as difficulty in post-processing. In particular, residual stresses generated at the interface between dissimilar materials have been reported to be important factors in mechanical properties of thin films, which have been rapidly used in recent years. The importance of residual stresses during welding is well known in bulk materials.
1 is a partial sectional view showing a conventional indentation tester.
The indentation tester of the Korean Patent No. 10-1117661 disclosed in FIG. 1 includes a
Such conventional indentation tester has a problem in that a complicated additional process such as a displacement error measurement error caused by the vibration transmitted to the displacement measuring instrument and resonance is large during the indentation test, and thus the error must be removed separately.
In addition, if the displacement measurement error is out of the range, the indentation tester will be damaged or error-prone, and in particular, the reliability of the indentation test result for a small area such as a thin film or a micro element can not be secured .
Accordingly, the present invention has been made in view of the background described above, and it is an object of the present invention to provide a method of measuring a displacement of a large structure from a small area such as a thin film or a micro device applied in an indentation test while advantageously evaluating mechanical properties by reducing a displacement measurement error caused by vibration and resonance during an indentation test To a wide range of specimens.
Further, the objects of the present invention are not limited thereto, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.
In order to accomplish the above object, the present invention provides a sensor assembly including a sensor assembly body, a pressure particle coupled to a lower end of the sensor assembly body, and a sensor assembly body coupled to an upper end of the sensor assembly body together with a slider moved by a ball screw and a screw nut A load sensor for measuring the load transmitted to the indentor's test specimen; a guide coupled to the sensor assembly body for measuring the depth to which the indenter is press-fit into the measurement specimen; A scale bar coupled to the push rod and sliding together, and a displacement sensor coupled to the sensor assembly body and sensing a position of the scale bar.
According to the present invention, there is provided a sensor assembly including a sensor assembly body, a pressure particle coupled to a lower end of the sensor assembly body, and a sensor assembly body coupled to an upper end of the sensor assembly body, A load sensor for measuring a load, and a displacement measuring device for measuring a depth at which the indentator is press-fitted into the measurement specimen. The displacement measuring device includes a displacement sensor main body through which the sensor assembly main body is coupled, a guide coupled to the displacement sensor main body, And a displacement sensor coupled to the displacement sensor body and sensing a position of the scale bar. The present invention also provides an indentation tester comprising: a push rod which is coupled to and slidably supported at an end of a measurement specimen;
According to the embodiment of the present invention, it is possible to reduce the displacement measurement error caused by the vibration and the resonance during the indentation test, which is advantageous in evaluating mechanical properties, but can be applied to a large range of microstructures So that the present invention can be applied to a wide range of specimens.
1 is a partial sectional view showing a conventional indentation tester;
2 is a partial sectional view showing an indentation tester according to an embodiment of the present invention;
3 is a perspective view showing a part of an indentation tester according to an embodiment of the present invention;
4 is an exploded perspective view showing a part of an indentation tester according to an embodiment of the present invention;
5 is a partial sectional view showing a part of an indentation tester according to an embodiment of the present invention;
6 is a sectional view showing a part of an indentation tester according to an embodiment of the present invention;
7 is a perspective view showing a part of an indentation tester according to another embodiment of the present invention;
8 is an exploded perspective view showing a part of an indentation tester according to another embodiment of the present invention;
9 and 10 are sectional views showing a part of an indentation tester according to another embodiment of the present invention.
Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.
In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected to or connected to the other component, It should be understood that an element may be "connected," "coupled," or "connected."
FIG. 3 is a perspective view showing a part of an indentation tester according to an embodiment of the present invention, and FIG. 4 is a perspective view showing an indentation tester according to an embodiment of the present invention. Fig. 5 is a partial cross-sectional view showing a part of an indentation tester according to an embodiment of the present invention, Fig. 6 is a sectional view showing a part of an indentation tester according to an embodiment of the present invention, Fig. FIG. 8 is an exploded perspective view showing a part of an indentation tester according to another embodiment of the present invention, FIGS. 9 and 10 are perspective views showing another indentation testing machine according to another embodiment of the present invention Sectional view showing a part of an indentation tester according to the present invention.
As shown in these drawings, the indentation tester according to an embodiment of the present invention includes a
The sensor assembly
The
Accordingly, when the
The
The
The
The
The
An
Here, the
The
In this embodiment of the present invention, the
This shows that the difference from the standard deviation (23.6 MPa) of the yield strength for the indentation tester of the present invention is significantly reduced to about 3 MPa as compared with the standard deviation (26.6 MPa) of the yield strength for the conventional indentation tester as shown in the following table have.
<Conventional Indentation Tester Test Result>
≪ Test result of indentation testing machine of the present invention &
Where YS is the yield strength, UTS is the ultimate strength, and MPa is the unit.
The indentation tester according to another embodiment of the present invention includes a sensor assembly
The
The
A through
The
The
The
The
The
A
An
Here, the sliding
The
An
The
The
The
As described above, according to the embodiment of the present invention, it is possible to reduce the displacement measurement error caused by vibration and resonance during the indentation test, thereby improving the evaluation of mechanical properties. However, The present invention can be applied to a wide range of specimens.
While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.
It is also to be understood that the terms such as " comprises, "" comprising," or "having ", as used herein, mean that a component can be implanted unless specifically stated to the contrary. But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.
The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.
105: driver 115: screw nut
130: ball screw 137: slider
201: sensor assembly main body 203: load sensor
205: pressure particle 210: displacement measuring instrument
211: push rod 215: displacement sensor
217: scale bar 219: elastic member
701: Sensor assembly body 703: Load sensor
705: pressure particle 710: displacement measuring instrument
711: push rod 715: displacement sensor
717: Scale bar
Claims (12)
A pressure particle coupled to a lower end of the sensor assembly main body;
A load sensor coupled to an upper end of the sensor assembly body and measuring a load transmitted to the test piece by the indenter;
A push rod which is slidably inserted into the guide and is supported by the measuring specimen, a slide member which is engaged with the push rod and slides together with the push rod, And a displacement sensor coupled to the sensor assembly body and having a displacement sensor for sensing a position of the scale bar,
Wherein the displacement sensor is coupled to the sensor assembly body by a pair of connecting members spaced apart from each other at a position facing the scale bar and supporting both side surfaces of the sensor assembly main body and both sides of the displacement sensor, And a through hole communicating with the through hole is formed at one side of the through hole and is fixed to the push rod via a fixing member in the communication hole, , And guide grooves are formed on both side surfaces of the scale bar and opposite inner side surfaces of the connecting member facing the both sides of the scale bar, and are slidably supported by sliding supporting members coupled to the guide grooves.
The guide may include a pair of guides which are disposed on one side and the other side of the push rod and are fixed to the sensor assembly body. Each of the guides has a through hole through which the push rod is slidably inserted, .
And an elastic member for elastically supporting the scale bar push rod is coupled between the upper end of the scale bar and the guide.
A pressure particle coupled to a lower end of the sensor assembly main body;
A load sensor coupled to an upper end of the sensor assembly body and measuring a load transmitted to the test piece by the indenter;
And a displacement measuring device for measuring the depth of the indentation being press-fitted into the measurement specimen,
The displacement measuring device includes a displacement sensor main body through which the sensor assembly main body is inserted, a guide coupled to the displacement sensor main body, a push rod slidably inserted into the guide and supported at the end of the measurement specimen, And a displacement sensor coupled to the displacement sensor body and sensing a position of the scale bar,
Wherein the displacement sensor is fixedly coupled to the sensor assembly body by a pair of connecting members spaced apart from each other at a position opposite to the scale bar and supporting both sides of the displacement sensor body and both sides of the displacement sensor, A rod engaging portion coupled to the push rod between the guides and having a through hole through which the push rod is coupled, and a plate spaced apart from the rod engaging portion and having opposite sides opposing the inner surface of the displacement sensor body And a connecting portion connecting the plate portion and the end portion of the rod coupling portion. The connecting portion is formed with a communication hole communicating with the through hole, and is fixed to the push rod via a fixing member in the communication hole, Guide grooves are formed on both side surfaces of the portion and opposite inner side surfaces of the connecting member facing the side surfaces, Wherein the guide rail is slidably supported by a sliding support member coupled to the guide groove, and a guide rail having an upper end opened is formed on one side surface of the displacement sensor body so that the connection portion can be vertically moved up and down together with the push rod, Wherein the connecting portion is supported by the guide rail to ascend and descend when ascending and descending of the guide rail.
The guide may include a pair of guides which are disposed on one side and the other side of the push rod and are fixed to the sensor assembly body. Each of the guides has a through hole through which the push rod is slidably inserted, .
And an elastic member for elastically supporting the scale bar push rod is coupled between the upper end of the rod coupling part and the guide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150046126A KR101670760B1 (en) | 2015-04-01 | 2015-04-01 | Apparatus for Indentation Test |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020150046126A KR101670760B1 (en) | 2015-04-01 | 2015-04-01 | Apparatus for Indentation Test |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20160118427A KR20160118427A (en) | 2016-10-12 |
KR101670760B1 true KR101670760B1 (en) | 2016-11-01 |
Family
ID=57173921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150046126A KR101670760B1 (en) | 2015-04-01 | 2015-04-01 | Apparatus for Indentation Test |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR101670760B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107291050B (en) * | 2017-06-09 | 2019-04-12 | 南京理工大学 | A kind of straight line load TT&C system |
KR102031197B1 (en) * | 2019-02-18 | 2019-11-08 | (주)프론틱스 | Instrumented Indentation Tester |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007047068A (en) | 2005-08-11 | 2007-02-22 | Mitsutoyo Corp | Push-in testing machine, indentor shaft, and displacement measurement method |
JP2008180669A (en) | 2007-01-26 | 2008-08-07 | Mitsutoyo Corp | Hardness testing machine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100406154B1 (en) * | 2001-03-27 | 2003-11-15 | (주)프론틱스 | Apparatus for indentation test, method for measuring data of indentation test and mechanical properties using it, and record medium saving method for measuring mechanical properties |
KR101117661B1 (en) * | 2009-11-24 | 2012-03-07 | (주)프론틱스 | Apparatus for Indentation Test Involving Micom and Evaluating Method of Residual Stress using The Same |
-
2015
- 2015-04-01 KR KR1020150046126A patent/KR101670760B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007047068A (en) | 2005-08-11 | 2007-02-22 | Mitsutoyo Corp | Push-in testing machine, indentor shaft, and displacement measurement method |
JP2008180669A (en) | 2007-01-26 | 2008-08-07 | Mitsutoyo Corp | Hardness testing machine |
Also Published As
Publication number | Publication date |
---|---|
KR20160118427A (en) | 2016-10-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107179245B (en) | Tensile compression ring shear seepage tester and tensile compression ring shear seepage test system | |
US8132447B2 (en) | Universal testing machine | |
KR101117661B1 (en) | Apparatus for Indentation Test Involving Micom and Evaluating Method of Residual Stress using The Same | |
EP2363701B1 (en) | Improved clamping mechanism for shear testing apparatus | |
CN103308416B (en) | Apparatus for thermal analysis | |
KR101670760B1 (en) | Apparatus for Indentation Test | |
CN109342219A (en) | A kind of coating testing device for shear strength | |
CN108169036B (en) | Mechanical type sheet metal bidirectional shearing device | |
KR102099399B1 (en) | Apparatus for measuring an inside diameter | |
KR102039088B1 (en) | Apparatus for holding specimen | |
CN107167381B (en) | Tensile and compression ring shearing circumferential seepage tester and system thereof | |
CN107505213B (en) | Novel small punch test device and test method thereof | |
CN207423643U (en) | A kind of lower loading system of refractory material experiment | |
CN107576578B (en) | Loading device and refractory material test loading and unloading method based on loading device | |
KR101981275B1 (en) | Apparatus for Indentation Impact Test | |
RU2231041C2 (en) | Micro-hardometer | |
KR101865582B1 (en) | Apparatus for Measuring the Cross-section Area and Curvature Radius of Material Tensile Test Specimen | |
CN107101863B (en) | Ring shear test tooling machine and tooling machine operation method | |
US20050109124A1 (en) | Apparatus and methods for tension testing of curved specimens | |
CN220304718U (en) | Friction force measuring device of reciprocating friction testing machine | |
CN105987849B (en) | One bulb compression testing device | |
CN212674816U (en) | Multifunctional load-controllable and deformation-controllable stable-state-method flat-plate heat conduction instrument loading system | |
CN211783999U (en) | Deviation force detection pressure device and sensor deviation force detection system | |
CN217586736U (en) | Bending performance detection device for composite material | |
CN212621932U (en) | Compression-shear testing machine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20191024 Year of fee payment: 4 |