KR101800554B1 - Indenter guide apparatus of indentation tester - Google Patents

Indenter guide apparatus of indentation tester Download PDF

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KR101800554B1
KR101800554B1 KR1020160137361A KR20160137361A KR101800554B1 KR 101800554 B1 KR101800554 B1 KR 101800554B1 KR 1020160137361 A KR1020160137361 A KR 1020160137361A KR 20160137361 A KR20160137361 A KR 20160137361A KR 101800554 B1 KR101800554 B1 KR 101800554B1
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indenter
indentation
indentation tester
tester
measured
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Korean (ko)
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박상규
김만원
정선미
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한국수력원자력 주식회사
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    • 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
    • G01N3/44—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid the indentors being put under a minor load and a subsequent major load, i.e. Rockwell system
    • 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
    • G01B21/16—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 distance of clearance between spaced objects
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G06T7/001—Industrial image inspection using an image reference approach
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
    • G06T7/74—Determining position or orientation of objects or cameras using feature-based methods involving reference images or patches

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Health & Medical Sciences (AREA)
  • Quality & Reliability (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (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 an indenter guiding device for an indentation tester, which measures properties of a material and, more specifically, to an indenter guiding device for an indentation tester, which can prevent damage to an indenter when the indenter touches an object to be measured and can shorten time of measuring work and improve the accuracy of the work because the measuring work is automatically performed. The indenter guiding device for an indentation tester includes a driving unit (3), a load sensor (4), a displacement sensor (5), and an indenter (6) in order to be connected with a computer (9) where a control program and a material properties analyzing program are mounted and to measure the load and an indentation depth of an object (2) to be measured. In addition, a vision camera (7) for photographing images of the moving state of the indenter (6) in real time is integrated with a main body (1a) of an indentation tester by using a camera support (8). The images photographed by the vision camera (7) in respect to a distance from the indenter (6) to the object (2) to be measured go through image processing in a calculation control unit (10) in the computer (9). Therefore, the indenter guiding device for an indentation tester can automatically implement indentation measurement of the indenter (6) while calculating the distance from the indenter (6) to the object (2) to be measured.

Description

압입시험기의 압입자 안내장치{Indenter guide apparatus of indentation tester}Technical Field [0001] The present invention relates to an indenter guide apparatus for indentation tester,

본 발명은 재료의 물성을 측정하는 압입시험기의 압입자 안내장치에 관한 것으로, 더욱 상세하게는 압입자를 측정 대상물에 접촉시킬 때 압입자의 손상을 방지하면서 측정작업이 자동으로 수행되어 측정 작업시간의 단축과 정확성이 향상되는 압입시험기의 압입자 안내장치에 관한 것이다.More particularly, the present invention relates to a pressure particle guide device for measuring physical properties of a material, and more particularly, to a pressure particle guide device for measuring the physical properties of a material, And to a pressure particle guide apparatus of an indentation tester in which the accuracy is improved.

주지된 바와 같이 압입시험기는 발전소의 압력용기 내지는 배관계통의 기계부품에 대해 여러 가지 기계적 특성을 측정할 수 있도록 되어 있는바, 종래 이러한 압입시험기(100)는 도 2에 도시된 바와 같이 하중과 변위를 측정하는 압입자(106)와 변위센서(105)를 이용하여 측정 대상물(102)에 접촉하여 압입시와 해중시 발생하는 압흔의 깊이와 그때의 하중을 측정하여 하중/변위곡선으로 나타나는 시험 결과값을 얻도록 시험을 수행하도록 되어 있다.As is well known, the indentation tester 100 is capable of measuring various mechanical properties of a pressure vessel of a power plant or a mechanical part of a piping system. In the conventional indentation tester 100, as shown in FIG. 2, The depth and the load at the time of indentation and in contact with the object to be measured 102 are measured using the pressure particle 106 and the displacement sensor 105 measuring the load The test is performed to obtain the value.

종래 상기와 같은 압입시험기(100)를 이용하여 측정 대상물(102)에 압입자(106)를 근접시키때, 상기 압입자(106)를 측정 대상물(102)에 최대한으로 가까이 접근시킨 다음, 상기 압입자(106)를 측정 대상물(102)에 접촉시키어 측정 압입 시험을 수행한다.When the pressure particle 106 is brought close to the measurement object 102 as close to the measurement object 102 when the pressure particle 106 is brought close to the measurement object 102 using the indentation tester 100 as described above, The measurement indentation test is performed by bringing the particles 106 into contact with the measurement object 102. [

그러나, 상기 압입자(106)를 측정 대상물(102)에 근접시킬 때 작업자가 육안으로 측정 대상물(102)에 압입자(106)의 접촉 여부를 확인하여야 하며, 이때 과도한 접촉력이 작용할 경우 압입자(106)가 손상되거나, 다른 측정 위치로 옮겨서 압입자(106)의 재접촉 측정작업을 새롭게 수행하여 측정작업의 번거로움과 시간이 많이 소요되는 문제점이 있었다.However, when the pressure particle 106 is brought close to the measurement object 102, the operator must check whether the pressure particle 106 is in contact with the measurement object 102 with the naked eye. If an excessive contact force is applied at this time, 106 is damaged or moved to another measuring position, and the measuring operation of the pressure particle 106 is newly performed, which complicates the measuring operation and takes a long time.

대한민국 공개특허 제10-2009-0042001호(2009.04.29.)Korean Patent Publication No. 10-2009-0042001 (2009.04.29.) 대한민국 공개특허 제10-2002-0076075호(2002.10.09.)Korean Patent Publication No. 10-2002-0076075 (October, 2002)

이에 본 발명은 상기와 같은 종래 문제점을 해결하기 위해 발명된 것으로, 압입자를 측정 대상물에 접근시킬 때 압입자와 대상 측정물의 거리 간격을 비젼 카메라와 이에 연결된 연산제어부에 의하여 실시간으로 제어됨에 따라 상기 압입자가 측정 대상물에 과도한 접촉력으로 접촉되는 것을 방지하여 압입자의 손상방지와 측정작업시간의 단축 및 정확성이 이루어지는 압입시험기의 압입자 안내장치를 제공함에 그 목적이 있다.SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to at least partially solve the problems in the conventional arts. Accordingly, it is an object of the present invention to provide a press- And an object of the present invention is to provide an indentation guiding device for an indentation tester in which damage to an indenter is prevented, a measurement operation time is shortened and accuracy is prevented by preventing an excessive contact force from being brought into contact with an object to be measured.

상기와 같은 목적을 달성하기 위한 본 발명은 제어프로그램과 물성분석프로그램이 탑재된 컴퓨터에 연결되어 측정 대상물의 하중과 인입깊이를 측정할 수 있도록 구동부와 하중센서, 변위센서 및 압입자를 구비한 압입시험기의 압입자 안내장치에 있어서, 상기 압입자의 이동상태를 실시간으로 이미지 촬영하는 비젼 카메라가 카메라 지지대를 이용하여 압입시험기의 본체에 일체로 장착되어 있으며, 상기 압입자와 측정 대상물의 거리간격에 대한 비젼 카메라의 촬영이미지 영상을 컴퓨터의 연산제어부에서 이미지 프로세싱 처리되어 상기 압입자와 측정 대상물의 거리를 계산하면서 압입자의 압입측정이 전자동으로 수행되도록 이루어져 있다.According to an aspect of the present invention, there is provided an apparatus for measuring a load of an object to be measured, the apparatus comprising: a control program; an indentation tester having a load sensor, a displacement sensor, Wherein a vision camera for capturing an image of the moving state of the indentor in real time is integrally mounted on a main body of an indentation tester using a camera support, and the vision of the distance between the indentation particle and the measurement object The photographed image of the camera is subjected to image processing in an arithmetic and control unit of a computer, and the indentation of the indentor is automatically performed while calculating the distance between the indentor and the object to be measured.

상술한 본 발명에 따른 압입시험기의 압입자 안내장치는 측정 대상물에 압입자 근접시 발생할 수 있는 과도한 접촉에 의한 압입자의 손상방지와, 실시간으로 촬영되는 비젼 카메라에 의한 압입자와 측정 대상물의 거리간격을 연산처리하여 압입자의 압입측정이 자동으로 수행됨에 따라 측정작업시간의 단축과 정확성이 향상되는 효과를 가지게 된다.The indentation guiding device of the indentation tester according to the present invention can prevent damage to the indentor due to excessive contact that may occur when the indentor approaches the indentor, The indentation measurement of the indentor is automatically performed, thereby shortening the measurement operation time and improving the accuracy.

도 1은 본 발명에 따른 압입시험기의 압입자 안내장치를 보여주는 일 실시 예의 전체 개략 구성도,
도 2는 종래 일반적인 압입시험기를 보여주는 도면이다.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an overall schematic configuration diagram of an embodiment showing an apparatus for guiding a droplet of an indentation tester according to the present invention; Fig.
2 is a view showing a conventional indentation tester.

이하, 본 발명의 일 실시 예를 첨부 도면에 의거 상세히 설명하는데, 본 발명은 설명하는 실시 예에 한정되는 것이 아니며 본 발명의 사상을 벗어나지 않는 범위 내에서 다양한 변형실시가 가능하다.Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above, and various modifications may be made without departing from the spirit of the present invention.

도 1은 본 발명에 따른 압입시험기의 압입자 안내장치를 보여주는 개략적인 구성도로서, 본 발명에 적용되는 압입시험기(1)는 도 2에 도시된 종래 압입시험기(100)와 유사한 압입시험기에 적용 가능하게 되어 있다.FIG. 1 is a schematic view showing an apparatus for guiding compressed particles of an indentation tester according to the present invention. The indentation tester 1 applied to the present invention is applied to an indentation tester similar to the conventional indentation tester 100 shown in FIG. 2 It is possible.

본 발명은 제어프로그램과 물성분석프로그램이 탑재된 컴퓨터(9)에 연결되어 측정 대상물(2)의 하중과 인입깊이를 측정할 수 있도록 구동부(3)와 하중센서(4), 변위센서(5) 및 압입자(6)를 구비한 압입시험기의 압입자 안내장치에 있어서, 상기 압입자(6)의 이동상태를 실시간으로 이미지 촬영하는 비젼 카메라(7)가 카메라 지지대(8)를 이용하여 압입시험기의 본체(1a)에 일체로 장착되어 있으며, 상기 압입자(6)와 측정 대상물(2)의 거리간격에 대한 비젼 카메라(7)의 촬영이미지 영상을 컴퓨터(9)의 연산제어부(10)에서 이미지 프로세싱 처리되어 상기 압입자(6)와 측정 대상물(2)의 거리를 계산하면서 압입자(6)의 압입측정이 전자동으로 수행되도록 이루어져 있다.The load sensor 4 and the displacement sensor 5 are connected to the computer 9 equipped with the control program and the physical property analysis program so as to measure the load and the depth of the measurement object 2, Wherein the vision camera (7) for photographing the moving state of the pressure particles (6) in real time is mounted on a camera support base (8) using an indentation tester And the photographed image of the vision camera 7 with respect to the distance between the pressure particle 6 and the measurement object 2 is transmitted to the arithmetic and control unit 10 of the computer 9 Image processing is performed so that indentation measurement of the pressure particle 6 is performed automatically while calculating the distance between the pressure particle 6 and the measurement object 2. [

이러한 본 발명은 상기 압입자(6)를 측정 대상물(2)에 근접시킬 때, 상기 비젼 카메라(7)를 이용하여 최대한 가깝게 이동시키게 되는데, 여기서 상기 비젼 카메라(7)는 다양한 광학기기로 대체할 수 있다.In the present invention, when the pressure particle 6 is brought close to the measurement object 2, the vision camera 7 is moved as close as possible to the measurement object 2. Here, the vision camera 7 may be replaced with various optical devices .

이후, 상기 비젼 카메라(7)가 압입자(6)와 측정 대상물(2)의 거리간격 영상신호를 컴퓨터(9)의 연산제어부(10)로 전송하면, 상기 연산제어부(10)에서 이미지 프로세싱을 수행하여 상기 압입자(6)와 측정 대상물(2)의 거리간격을 계산하게 되고, 일정거리만큼 접근된 상태이면 상기 압입자(6)의 구동이 일시적으로 정지하게 되면서 압입자(6)가 측정 대상물(2)에 접촉하면서 공지의 압입시험기(1)의 구동부(3)에 의해 압입측정시험을 수행하도록 되어 있다.Thereafter, when the vision camera 7 transmits a distance-interval image signal between the abrasive particles 6 and the measurement object 2 to the operation control unit 10 of the computer 9, the operation control unit 10 performs image processing And the distance between the pressure particle 6 and the measurement object 2 is calculated. When the pressure particle 6 is approaching a certain distance, the driving of the pressure particle 6 is temporarily stopped, The indentation measurement test is carried out by the driving unit 3 of the known indentation tester 1 in contact with the object 2.

따라서 본 발명에 따른 압입시험기의 압입자 안내장치는 압입자(6)가 측정 대상물(2)에 최대한으로 접근하여 위치 이동되는 단계와, 상기 압입자(6)가 측정 대상물(2)에 접촉하여 압입측정을 수행하는 압입측정단계가 전자동으로 이루어지는 기능을 갖추게 된다.Therefore, the apparatus for guiding the pressure particles of the indentation tester according to the present invention comprises a step in which the pressure particles 6 approach the measurement object 2 as much as possible, and the position of the pressure particle 6 contacts the measurement object 2 The indentation measuring step for performing the indentation measurement is provided with a function to be performed automatically.

상술한 바와 같이 본 발명은 압입시험기를 이용하여 측정 대상물의 압입측정시 압입자가 측정 대상물에 과도한 접촉력으로 접촉하여 손상될 수 있는 현상을 방지하면서 압입측정 작업이 전자동으로 수행되어 측정작업시간이 대폭 단축된다.As described above, according to the present invention, the indentation measuring operation can be automatically performed while preventing the phenomenon that the indentator contacts and is damaged by excessive contact force with the measuring object during the indentation measurement of the measuring object by using the indentation tester, do.

1 : 압입시험기, 2 : 측정 대상물,
3 : 구동부, 4 : 하중센서,
5 : 변위계, 6 :압입자,
7 : 비젼 카메라, 8 : 카메라 지지대,
9 : 컴퓨터, 10 : 연산제어부.1: indentation tester, 2: measurement object,
3: driving unit, 4: load sensor,
5: displacement meter, 6: pressure particle,
7: vision camera, 8: camera support,
9: computer, 10: operation control unit.

Claims (1)

제어프로그램과 물성분석프로그램이 탑재된 컴퓨터(9)에 연결되어 측정 대상물(2)의 하중과 인입깊이를 측정할 수 있도록 구동부(3)와 하중센서(4), 변위센서(5) 및 압입자(6)를 구비하고, 상기 압입자(6)와 측정 대상물(2)의 거리간격에 대한 비젼 카메라(7)의 촬영이미지 영상을 컴퓨터(9)의 연산제어부(10)에서 이미지 프로세싱 처리되어 상기 압입자(6)와 측정 대상물(2)의 거리를 계산하면서 압입자(6)의 압입측정이 전자동으로 수행되는 압입시험기의 압입자 안내장치에 있어서,
상기 압입자(6)의 이동상태를 실시간으로 이미지 촬영하는 비젼 카메라(7)가 카메라 지지대(8)를 이용하여 압입시험기의 본체(1a)에 일체로 장착되어 이루어진 것을 특징으로 하는 압입시험기의 압입자 안내장치.A load sensor 4, a displacement sensor 5 and a pressure sensor 5 connected to a computer 9 equipped with a control program and a physical property analysis program so as to measure a load and a drawing depth of the measurement object 2, And a photographed image of the vision camera 7 with respect to the distance between the pressure particle 6 and the measurement object 2 is subjected to image processing in the arithmetic and control unit 10 of the computer 9, In a pressure particle guide apparatus of an indentation tester in which indentation measurement of a pressure particle (6) is performed automatically while calculating a distance between a pressure particle (6) and a measurement object (2)
Wherein a vision camera (7) for photographing the moving state of the pressure particles (6) in real time is integrally mounted on a main body (1a) of an indentation tester by using a camera support (8) Particle guide device.
KR1020160137361A 2016-10-21 2016-10-21 Indenter guide apparatus of indentation tester KR101800554B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007183190A (en) * 2006-01-06 2007-07-19 Renias:Kk Microhardness measuring method and microhardness meter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007183190A (en) * 2006-01-06 2007-07-19 Renias:Kk Microhardness measuring method and microhardness meter

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