KR20160141149A - Armor Plate Durability Inspection Equipment - Google Patents

Armor Plate Durability Inspection Equipment Download PDF

Info

Publication number
KR20160141149A
KR20160141149A KR1020150075158A KR20150075158A KR20160141149A KR 20160141149 A KR20160141149 A KR 20160141149A KR 1020150075158 A KR1020150075158 A KR 1020150075158A KR 20150075158 A KR20150075158 A KR 20150075158A KR 20160141149 A KR20160141149 A KR 20160141149A
Authority
KR
South Korea
Prior art keywords
meter reading
plate
durability
guide jig
press
Prior art date
Application number
KR1020150075158A
Other languages
Korean (ko)
Other versions
KR101688802B1 (en
Inventor
정종대
Original Assignee
대한민국(국방부 해군참모총장)
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.)
Filing date
Publication date
Application filed by 대한민국(국방부 해군참모총장) filed Critical 대한민국(국방부 해군참모총장)
Priority to KR1020150075158A priority Critical patent/KR101688802B1/en
Publication of KR20160141149A publication Critical patent/KR20160141149A/en
Application granted granted Critical
Publication of KR101688802B1 publication Critical patent/KR101688802B1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
    • 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
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/56—Investigating resistance to wear or abrasion
    • 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
    • G01N2203/0014—Type of force applied
    • G01N2203/0016—Tensile or compressive
    • G01N2203/0019—Compressive
    • 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
    • G01N2203/0042—Pneumatic or hydraulic means
    • G01N2203/0048—Hydraulic 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
    • G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
    • G01N2203/0075—Strain-stress relations or elastic constants

Abstract

A device for checking the durability of a bulletin board using digital means is provided. The machine for checking the durability of the bulletin board reads a meter reading result of the meter reading plate and the meter reading plate which are composed of a desk at the lower part and a press part including the guide jig at the upper part, an upper meter reading frame and a lower meter reading frame, A computer section provided on a spaced apart side of the press section, and a display located on top of the computer section.
According to the present invention, it is possible to perform the durability meter reading of the ballistic board regardless of whether or not it is used, and the data can be calculated or stored for future use.

Description

{Armor Plate Durability Inspection Equipment}

The present invention relates to a machine capable of inspecting the durability of a bulletin board, and particularly relates to a machine for inspecting multiple inspection elements such as a bending angle and a wear degree of a bulletin board by using a digital means and storing and calculating The present invention relates to a meter reading machine having means.

Bulletproof panels are articles to protect users from fire. If you use a bad bulletin board or the durability of the bulletin board is exhausted, you can not protect it. Therefore, the bulletin board is placed on the spot after the durability test. Periodic durability metering is also required for the ballasts used in the field.

The durability of a conventional ballistic testing method was measured using a simple ballistic tester and an impactor as disclosed in Korean Patent Laid-Open Publication No. 10-2011-0037383. This test method is carried out by providing a clay tube on the back of a bulletproof plate to allow a clay tube to receive an amount of an unabsorbed impact on the specimen to be impacted and to apply a load cell The impact quantity and the impact quantity delivered to the clay tube are measured and compared, respectively.

However, this method has a disadvantage in that it requires a large impact on the bulletin board to measure durability. There is a risk that the bulletproof plate may be damaged by the impact applied during the measurement process. Therefore, the conventional inspection method can be applied only to fresh bulletproof plates, and it is difficult to apply to the bulletproof plate used in the field.

KR 101105455 B1

The present invention provides a ballast durability meter having a storage and computing means capable of performing durability meter reading of a ballast board using digital means and storing, reading and calculating the results of the inspection as data.

In the meantime, the non-stated objects of the present invention should be further considered within the scope of the following detailed description and easily deduced from the effects thereof.

A ballast durability measuring machine according to an embodiment of the present invention includes: a press portion including a desk at a lower portion and a guide jig at an upper portion; A meter reading plate constituted of an upper meter reading frame and a lower reading meter frame and connected to upper and lower portions of the press portion, respectively; A computer unit provided on a side surface of the press section for reading a result of meter reading of the meter reading plate; And a display located on top of the computer unit.

The upper and lower reference probes can be assembled to the upper surface of the desk and the lower surface of the guide jig. And can be freely detached from the desk and the guide jig.

According to an aspect of the present invention, there is provided a gas turbine durability measuring machine comprising: a cylinder disposed at an upper portion of a guide jig; A hydraulic chamber located at the top of the press section and connected to the cylinder; And a guide plate disposed on a bottom surface of the guide jig.

According to an embodiment of the present invention, a ballistic durability measuring machine includes: a center pillar positioned at a spaced apart lower side portion of a press portion; A power unit located at a spaced upper side portion of the press section; And an emergency stop button and an acceleration / deceleration button located on one side of the power unit.

According to an embodiment of the present invention, the ballast durability measuring machine includes: a lower meter reading plate positioned on an upper surface of a lower meter reading frame; And an upper metering plate positioned on the lower surface of the upper metering frame. The upper surface of the lower metering plate and the lower surface of the upper metering plate may include a plurality of the creed sensors.

And a wire terminal connected to the center pillar and a lead wire may be provided on one side of the lower meter reading plate and the upper meter reading plate of the bulletin board sustainability measuring machine.

The ballast durability testing machine according to an embodiment of the present invention may include one or more operation buttons located on one side of the display. A digital converter inside the computer unit; gate; Memory; leader; A transformer for transmitting a command input through an operation button; An order gate for converting a command of the transformer into an input signal; And an analog converter for converting the command signal to an analog signal.

The durability of the ballast board can be measured efficiently by measuring the durability of the ballast board by acquiring and combining data such as contact area, pressure, and warpage obtained by digital means. In the conventional method, the bulletproof plate may be damaged by directly applying a large impact to the bulletproof plate, which makes it difficult to apply the bulletproof plate to the bulletproof plate used in the field. However, according to the present invention, the durability of the bulletproof plate can be checked even with a small amount of impact, so that the durability test can be performed on the bulletproof plate being used. In addition, operation and storage devices are added, and the data acquired in the durability meter reading process can be read and calculated by itself, and stored in a storage device for later use.

1 is an exploded view of a ballast durability measuring machine according to an embodiment of the present invention.
2 is a perspective view of the gas turbine durability measuring machine of Fig. 1;
3 is an exploded bottom view of the ballast durability measuring machine of Fig. 1;
FIG. 4 is an exploded perspective view showing the meter reading plates of the gas turbine durability measuring machine of FIG. 1 interdigitated. FIG.
FIG. 5 is a cross-sectional view showing a state in which the meter reading plates of the gas turbine durability measuring machine of FIG. 1 are interdigitated.
6 is a wiring diagram of the computer section of the bulletin board endurance measuring machine of FIG.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the present invention is not intended to be limited to the embodiments but includes all changes, equivalents, and alternatives falling within the spirit and scope of the present invention. Like reference numerals designate like elements throughout the drawings.

It will be understood that when an element is referred to as being "connected" or "connected" to another element, it may be connected or connected without the other element to the other element, It should be understood.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular forms include plural forms unless the context clearly dictates otherwise. It is to be understood that the terms such as " comprises, " or " formed " in this application are intended to specify the presence of stated features, integers, But do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

 Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Generally used terms are to be interpreted as having a meaning consistent with the meaning in the context of the related art and are not to be construed as ideal or overly formal meaning unless the meaning is clearly defined herein.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

1 is an exploded view of a ballast durability measuring machine according to an embodiment of the present invention. The structure of the ballast durability measuring machine of Fig. 1 is merely for illustrating the present invention, and the present invention is not limited thereto. The structure of the ballast durability measuring machine can be modified to other forms.

As shown in FIG. 1, the bulletin board endurance measuring machine includes a press section 100, a guide bar 130, a meter reading plate 200, a computer section 300, and a display 320. In addition, the bulletin board endurance measuring machine may further include a cylinder 145, a hydraulic chamber 150, a center pillar 190, and the like.

The press unit 100 includes a desk 101 at a lower portion thereof and a guide jig 110 at an upper portion thereof. Between the guide jig 110 and the desk 101, a meter reading plate 200 is included. And a guide plate 115 may be provided on a lower surface of the guide jig 110. The press portion may include a hydraulic chamber 150 on the upper portion.

At the bottom of the guide jig 110, two or more grooves that can be engaged with the upper end of the reference probe 240 are formed. The lower surface of the guide jig 110 may be connected to a guide plate 115 having a plurality of grooves formed on the lower surface thereof. The guide jig 110 is fixed by a pair of guide bars 130 positioned on both sides of the guide jig 110 and moves vertically up and down. As the guide jig 110 moves, the upper probe tip frame 240 coupled to the guide jig 110 moves.

The lower probe 210 is coupled to the desk 101. The desk 101 is connected to the lower end of the press section 100 and prevents the lower metering frame from moving when pressure is applied to the lower metering frame 210 for inspection.

The inspector plate 200 includes an upper probe tip frame 240 and a lower probe tip frame 210. The upper reference probe 240 and the lower probe 210 may be formed with curved concave portions and the reference probe 200 may be detached from the guide jig 110 and the desk 101 have.

As shown in FIG. 1, a meter reading plate 250 is positioned at a portion where the lower meter reading frame 210 and the upper meter reading frame 240 are in contact with each other. The lower meter reading frame 251 is provided on the upper surface of the lower reading mechanism frame, and the upper reading plate 252 is provided on the lower surface of the upper reading unit 240. The lower meter reading plate 251 and the upper meter reading plate 252 include a lead terminal 255 connected to the center pillar 190 through a lead wire 260 on one side. The lead wire 260 transmits the ballast durability and wear measurement data measured by the lower meter reading plate 251 and the upper meter reading plate 252 to the computer unit 300.

The computer unit 300 is connected to one side of the press unit 100. The computer unit 300 includes storage and calculation means. A display 320 is positioned on the computer unit 300 and a display 320 outputs measured readability and wear measurement data. The display 320 may include a plurality of operation buttons 322 and a removable storage device connection terminal.

As shown in FIG. 1, the cylinder 145 is connected to the hydraulic chamber 150 located on the upper surface of the press unit 100, and is located at the upper portion of the guide jig 110. The cylinder 145 transfers the pressure generated in the hydraulic chamber 150 to the guide jig 110 to move the guide jig 110 vertically up and down.

A center pillar 190 is positioned below the side surface of the press part 100 and a power unit 192 is disposed on the center pillar. The power unit 192 controls the internal hydraulic pressure of the hydraulic chamber 150. The cylinder 145 moves vertically in the vertical direction as shown in FIG. 4, under the control of the power unit 192.

The power unit 192 may include a spill stop button 195 that can stop the device when an excessive pressure is applied to one side or an accident involving the hand of a person. And may also include an acceleration / deceleration button 197 that allows the user to arbitrarily adjust the pressure to derive the correct value.

2 is a perspective view showing a configuration for carrying out the present invention. The lower probe 210 and the upper probe 240 are attached to the desk 101 and the guide jig 110 in the press unit 100.

As shown in FIG. 3, the lower reference probe 210 and the upper reference probe 240 may be hollow. It can be manufactured in various shapes, but it is characterized by being hollow and low manufacturing cost.

5, a crease sensor 253 is provided on the upper surface of the lower meter reading plate 251, which is a curved concavity and convexity where the lower meter reading frame 210 and the upper meter reading frame 240 are in contact with each other, Many are included. Unlike the load cell, which is a load sensing sensor, the creed sensor 253 measures the strength and tilt through the area of the contacted surface and the input pressure. The creed sensor 253 uses a flex sensor, which measures the degree of bending by transmitting a resistance value according to the degree of bending. If the data transfer value of the bending sensor as described above is tightened, the accuracy of the bulletin board can be sufficiently checked. Therefore, it is possible to measure not only the durability but also the angle of warpage of the dustproof panel by using a plurality of the creep sensor 253 using the sensor as described above.

The surfaces of the lower meter reading plate 251 and the upper meter reading plate 252 are made of a porous polyurethane material such as EVA material so that the crease sensor 253 can measure the durability and the bending angle of the bulletin board more accurately. .

Fig. 6 is a wiring diagram for explaining the embodiment as described above. Physical data such as the strength, durability, and warping angle of the bulletproof board measured by the meter reading plate 250 are transmitted to the lead wire 260 through the lead terminal 255. The lead wire 260 transmits the data to the computer unit 300 provided on the spaced side of the press unit 100 through the center pillar 190.

The computer unit 300 includes a digital converter 302 for converting a physical signal value into digital data, a gate 303 for reading whether the data is completely transferred, a memory 305 for storing the data, The reader 308 includes a reader 308 for reading and transmitting a specific signal or command and outputs a data value to a display 320 provided at an upper end of the computer unit 300. A transformer 315 for converting a signal inputted through a plurality of operation buttons 322 provided on one side of the display 320 into an input signal and transmitting the input signal, The order gate 317 is further included in the computer unit 300.

At this time, the reader 308 plays a role of receiving and transmitting data. When the output signal input to the order gate 317 is transmitted to the reader 308, the reader 308 converts the output signal into an analog signal through the analog converter 312 included in the computer unit 300 And transmits it to the power unit 192. Through the signal to the power unit 192, the user can freely lower the pressure, move, stop, and the like of the press.

In addition, the display 320 may include a removable storage medium connection terminal to store data stored in the memory 305 in a removable storage medium such as a USB. In this case, the storage signal can be input by using the operation button 322 located on the side of the display.

As described above, the strength of various ballasts and armor plates can be measured. Through this, it is possible to greatly increase the safety of the armor and the bottlenecks using the armor plate and the bulletproof plate, and to maximize the success rate of the operation.

While the present invention has been described with reference to the foregoing description, it is to be understood that the invention is not limited to the specific embodiments thereof, and that various modifications and changes may be made thereto without departing from the spirit and scope of the appended claims. These modifications should not be understood individually from the technical idea or viewpoint of the present invention.

100: Press section 101: Desk
110: guide jig 115: guide plate
130: Guide bar 145: Cylinder
150: Hydraulic chamber 190: Center filler
192: Power unit 195: Emergency stop button
197: Increasing / decreasing button 200:
210: lower reading part 240: upper reading part
250: meter reading plate 251: lower meter reading plate
252: Upper meter reading plate 253: Creed sensor
255: lead wire 260: lead wire
300: Computer section 302: Digital converter
303: gate 305: memory
308: Reader 312: Analog converter
315: transformer 317: order gate
320: Display unit 322: Operation button

Claims (7)

It is a machine that can check the durability of the bulletin board,
A press portion including a desk at a lower portion and a guide jig at an upper portion thereof;
A meter reading plate which is composed of an upper meter reading frame and a lower meter reading frame and is connected to the upper part and the lower part of the press part, respectively;
A computer unit provided on a side surface of the press section to read the inspection result of the inspection plate; And
A display located at an upper end of the computer unit;
Wherein the ballast durability measuring machine comprises:
The method according to claim 1,
Wherein the inspection plate is assembled to an upper surface of the desk and a lower surface of the guide jig and is freely detachable from the desk and the guide jig. The method according to claim 1,
A cylinder positioned above the guide jig;
A hydraulic chamber located at an upper end of the press section and connected to the cylinder; And
A guide plate located on a lower surface of the guide jig;
Further comprising a baffle durability meter. 4. The method according to any one of claims 1 to 3,
A center pillar positioned at a spaced apart lower side portion of the press portion;
A power unit located at a spaced upper side portion of the press section; And
An emergency stop button and an acceleration / deceleration button located on one side of the power unit;
Further comprising a baffle durability meter. The method according to claim 1,
A lower metering plate positioned on the upper surface of the lower metering frame;
An upper metering plate located on a lower surface of the upper metering frame;
Further comprising:
And a plurality of creep sensors are provided on the upper surface of the lower inspection plate and the lower surface of the upper inspection plate. 6. The method of claim 5,
A lead terminal located on one side of the lower meter reading plate and the upper meter reading plate and connected to the center pillar by a lead;
Further comprising a baffle durability meter. The method according to claim 1,
One or more operating buttons located on one side of the display; And
A computer, and a computer. The computer includes a digital converter, a gate, a memory, a reader, a transceiver for transmitting a command input through the operation button, an order gate for converting a command of the trans into an input signal,
Further comprising a baffle durability measuring machine.
KR1020150075158A 2015-05-28 2015-05-28 Armor Plate Durability Inspection Equipment KR101688802B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150075158A KR101688802B1 (en) 2015-05-28 2015-05-28 Armor Plate Durability Inspection Equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150075158A KR101688802B1 (en) 2015-05-28 2015-05-28 Armor Plate Durability Inspection Equipment

Publications (2)

Publication Number Publication Date
KR20160141149A true KR20160141149A (en) 2016-12-08
KR101688802B1 KR101688802B1 (en) 2016-12-30

Family

ID=57576653

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150075158A KR101688802B1 (en) 2015-05-28 2015-05-28 Armor Plate Durability Inspection Equipment

Country Status (1)

Country Link
KR (1) KR101688802B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109342208A (en) * 2018-12-13 2019-02-15 中国工程物理研究院化工材料研究所 The accurate loading simulation equipment of the safety-type material static(al) of large-tonnage
CN109596436A (en) * 2019-01-14 2019-04-09 中国工程物理研究院化工材料研究所 The accurate driving method of static(al) of the accurate loading simulator of the safety-type static(al) of large-tonnage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007132844A (en) * 2005-11-11 2007-05-31 Toyota Motor Corp Press-monitoring system and ae evaluation method
JP2007285949A (en) * 2006-04-19 2007-11-01 Toyota Motor Corp Press failure determining method, press failure determining system and press molding machine
KR101105455B1 (en) 2009-10-06 2012-01-17 한국생산기술연구원 lab-Scale Testing apparatus for ballistic Resistance and impact apparatus
KR101157933B1 (en) * 2011-10-31 2012-07-03 주식회사 케이피아이 Bulletproof performance testing apparatus for knifeproof material
KR20140031857A (en) * 2011-01-31 2014-03-13 마이클 감렌 Tablet press

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007132844A (en) * 2005-11-11 2007-05-31 Toyota Motor Corp Press-monitoring system and ae evaluation method
JP2007285949A (en) * 2006-04-19 2007-11-01 Toyota Motor Corp Press failure determining method, press failure determining system and press molding machine
KR101105455B1 (en) 2009-10-06 2012-01-17 한국생산기술연구원 lab-Scale Testing apparatus for ballistic Resistance and impact apparatus
KR20140031857A (en) * 2011-01-31 2014-03-13 마이클 감렌 Tablet press
KR101157933B1 (en) * 2011-10-31 2012-07-03 주식회사 케이피아이 Bulletproof performance testing apparatus for knifeproof material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109342208A (en) * 2018-12-13 2019-02-15 中国工程物理研究院化工材料研究所 The accurate loading simulation equipment of the safety-type material static(al) of large-tonnage
CN109342208B (en) * 2018-12-13 2021-04-06 中国工程物理研究院化工材料研究所 Large-tonnage safe type material static force accurate loading simulation equipment
CN109596436A (en) * 2019-01-14 2019-04-09 中国工程物理研究院化工材料研究所 The accurate driving method of static(al) of the accurate loading simulator of the safety-type static(al) of large-tonnage

Also Published As

Publication number Publication date
KR101688802B1 (en) 2016-12-30

Similar Documents

Publication Publication Date Title
KR101136801B1 (en) Impact Test Device and Impact Test Method of Battery Cell
US20200103322A1 (en) Test Fixtures for Evaluating Mechanical Properties of Asphalt Samples and Related Systems and Methods
KR101844564B1 (en) A Small Type of a Device for Measuring Strain for Practicing in Learning
KR101688802B1 (en) Armor Plate Durability Inspection Equipment
CN202583021U (en) Ball indentation hardness tester
ITMI20090591A1 (en) UNIVERSAL-TYPE DUROMETER WITH READY-OF-FORM READING DEVICE.
CN108827533A (en) A kind of explosive residual stress supersonic testing method sound bullet factor calibration device
Guindos et al. The utility of low-cost photogrammetry for stiffness analysis and finite-element validation of wood with knots in bending
Akter et al. Moisture and short-term time-dependent behavior of Norway spruce clear wood under compression perpendicular to the grain and rolling shear
CN213181095U (en) Hardness detection device of rubber product
RU145007U1 (en) DEVICE FOR MEASURING SUPPORT REACTIONS
CN204029218U (en) A kind of Comprehensive Experiment equipment for Design of Experimental Teaching Mode of Mechanics
CN104077444B (en) Analysis method of indentation data
Wagner et al. Processing and evaluation of build-up system measurement data
CN109580397B (en) Method and device for measuring fatigue crack propagation rate
CN214426873U (en) Pressure calibration device
CN206362645U (en) A kind of shale interlayer creep shear tester
CN215262937U (en) Rockwell hardness meter
KR20140047234A (en) Method for welding residual stress evalution of welding part using small specimens and the small specimens thereof
JP2012061049A (en) Stabilometer
CN214695784U (en) Anti-cheating base plate for static load test
JPH03245038A (en) Consistency measuring method
CN107632143A (en) A kind of concrete shrinkage tester
RU155685U1 (en) STAND FOR TESTING DYNAMICALLY DYNAMIC Torsion of STATICALLY COMPRESSED REINFORCED CONCRETE ELEMENTS
CN204170388U (en) Sitting body anteflexion tester

Legal Events

Date Code Title Description
A201 Request for examination
A302 Request for accelerated examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant