UNIVERSAL TESTING MACHINE FOR CIVIL ENGINEERING
- 3. A Universal testing machine (UTM) is used to test the mechanical properties (tension, compression etc.) of a given test specimen by exerting tensile, compressive or transverse stresses. The machine has been named so because of the wide range of tests it can perform over different kind of materials. Different tests like peel test, flexural test, tension test, bend test, friction test, spring test etc. can be performed with the help of UTM.
- 4. 1. Application The machine adopts hydraulic loading, Computer Display, easy and convenient to operate. It is mainly used to execute the tension, compression, bending, flexural etc. test for metal materials. Attached with simple accessories and devices, it can be used to test wood, concrete, cement, rubber, and so on. It is very suitable for making test to different metal or nonmetal materials under high toughness and hardness against extreme big loading force.
- 5. 2. Standards ISO6892, BS4449,ASTM C39,ISO75001, ASTM A370, ASTM E4, ASTM E8 and BSEN standards. 3. Host Features 3.1 adopts that fuel tank is mounted under the host, tensile test space is located above the host, compression, bending, shearing test space is located under the host, means between beam and worktable.
- 6. 3.2 The structure is designed with solid four column and two screw, the whole machine has strong stability. 3.3 The host is designed all-inclusively to ensure its super strong stiffness so that it can resist micro- deformation when it is loading. 3.4 Middle beam adopts adjustable gap screw-nut mechanism, eliminating the gap and improving the measurement performance. 3.5 Fuel tank adopts gap sealed, improving the measurement accuracy and also extending service lifetime.
- 7. 4. Overload protection 4.1 When the test force exceeds 2%- 5% of the maximum test force of each file, overload protection, it will stop. 4.2 When the piston rises to the upper limit position, travel protection, pump motor will stop.
- 8. 5. Main specifications Model WEW-600D Structure 6 column Control way loading process manual control, computer automatic data dealing Max. load 600kN Load accuracy ≤±1% /≤± 0.5% Load range 2%-100%FS /0.4%-100%FS Load resolution 1/300000 Deformation Measurement Range 2%～100%FS Deformation accuracy ≤±1%/± 0.5% Displacement resolution 0.01mm Displacement error ≤±0.5% Max.piston stroke 250mm Max piston moving speed 0-70mm/min Manual adjustment Crosshead lifting speed 270mm/min Max. tension test space 650mm(can customize) Max.Compression Test Space 450mm(can customize) Column clearance 470mm
- 9. Clamping method Hydraulic clamp Round specimen clamping range Φ13-Φ40mm Flat specimen clamping range 0-15mm Flat specimen clamping width 75mm Compression plate size φ160mm Bending roller distance 450mm Width of bending rollers 120mm Power supply 3-phase,AC380V, 50Hz （can be customized）
- 10. 6. Configuration: 6.1. Four columns two ball screws oil cylinder down-setting high strength host-1set * Testing machine special tensile fixture Round Φ13-Φ40mm， Flat：0-15mm)-----1suit * Testing machine special bending fixture-----------------------1suit * Testing machine special compression fixture(φ160mm)----1suit * Testing machine special shear fixture(Optional)------------1suit
- 12. 6.2. Oil source control cabinet-----------------------------------------------------1 set
- 13. * Italy imported Marzocchigear meshing pump-----------------------------1set * “WNM”motor-------------------------------------------------------------------------1set *Reversing solenoid valve for hydraulic clamp device----------------------2pcs *Relief valve for hydraulic clamp device-----------------------------------------1pc * One-way valve--------------------------------------------------------------------1 pc * Precision oil filter--------------------------------------------------------------------1 pc * Constant pressure difference send oil valve-----------------------------------1pc * Closed type oil return valve------------------------------------------------------1 pc * Harp oil source control cabinet shell -----------------------------------------1 set
- 14. 6.3. specialized measure and control system---------------------------1suit * High precision displacement testing device-----------------------------1 suit * High accuracy sensor------------------------------------------------------1 pc * YSJ50/10 high precision electronic extensometer---------------1 pc * Lenovo computer------------------------------------------------------1 set * HPA4 color ink-jet printer---------------------------------------------1 set * Testing machine special measurement and control----------------1set 6.4 All closed protective net (Optional)-----------------------1suit
- 15. 7. Software function and features: 7.1.Defined function: according to different types of users, different material properties, different test standards, different languages, flexible setting the test program to meet the test requirements. 7.2.Input Function: Entry specimen parameters before the test, you can single input sample parameter, you can also batch input sample parameters, you can modify the sample parameters before the test, the specimen parameters can be modified after the test, fully satisfy your operating habits.
- 16. 7.3.In metal tensile test, Can automatically obtainFel、Feh 、Fp、Ft、Fm、Rel、Reh、Rp、Rt、Agt、Z、A、Rm, etc ，Also can carry on the artificial recognition of for Fel, Fm, etc. and print the results accordingly. Can print different content of the report and curve according to the need. 7.4.Testing standard：The program use the open database structure, integrating national,ISO、ASTM、JIS、DIN and other test method, also can customize as request; Can configure multiple sets of force sensor and extensometer, the user can switch at anytime according to need.
- 17. 7.5.Data processing query functions: fully equipped data query function, print function, the export function to ensure the accuracy of the test data, reliability, real embody and reflect the nature and characteristics of the material test data. 7.6.Curve point traversal functions: Through the mouse click on the curve of force and deformation values, to obtain various parameters of each point. 7.7.Curve selection function: force-time, deformation-time, force-deformation, force-displacement four curves can be selected according the necessity to display and print; and we can switch observation at any time, any zoom (zoom in or zoom out), move it horizontally or vertically, and high-speed sampling at real-time.
- 18. 7.8.Auto saving: adopting the the database management way, the test data and curve automatically saved after the test. 7.9.Automatic analysis: Finish test, the system automatically analysis, statistical test results. 7.10.Test report: According to user required format to compile reports and can print bulk data.
- 21. A universal testing machine consists of two main parts : Loading Unit Control Unit The arrangement of the test specimen and the exertion of the load is held in the loading unit. The variations in the application of the load and the corresponding test result are obtained from the control unit. In the figure below, the left unit with table and crosshead form the loading unit. The right unit with a load indicator arrangement is the control unit.
- 24. 1. Loading Unit The loading unit of a UTM consists of the following components : • Load Frame • Upper crosshead and Lower crosshead • Elongation Scale
- 25. 1. Load Frame The load frame of a universal testing machine can be made either by single support or by double support. The load Frame consists of a table (where the specimen is placed for the compression test), upper crosshead, and lower crosshead. 2. Upper Crosshead and Lower Crosshead The upper crosshead is used to clamp one end of the test specimen. The lower crosshead in the load frame is the movable crosshead whose screws can be loosened for height adjustment and tightened. Both the crossheads have a tapered slot at the center. This slot has a pair of racked jaws that is intended to grip and hold the tensile test specimen.
- 26. 3. Elongation Scale The relative movement of the lower and upper table is measured by an elongation scale which is provided along with the loading unit. 2. Control Unit The main components of the control unit in a universal testing machine are : Hydraulic Power Unit Load Measuring Unit Control Devices
- 27. 1. Hydraulic Power Unit This unit consists of an oil pump that provides non-pulsating oil flow into the main cylinder of the load unit. This flow helps in the smooth application of load on the specimen. The oil pump in a hydraulic power unit is run by an electric motor and sump. 2. Load Measuring Unit This unit has a pendulum dynamometer unit that has a small cylinder with a piston which moves with the non-pulsating oil flow. The pendulum is connected to the piston by pivot lever. The pivot lever deflects based on the load applied to the specimen. This deflection is converted to the load pointer and displays as the load on the dial.
- 28. The range of load application can be adjusted by means of a knob in the load measuring unit (0-100 kN; 0-250 kN; 0- 500 kN and 0-1000 kN). The accuracy of measuring unit controls the overall accuracy of the machine. 3. Control Devices The control devices can be electric or hydraulic. Electric control devices make use of switches to move the crossheads and switch on/off the unit. A hydraulic control device consists of two valves, Right Control Valve and Left Control Valve or Release Valve. A right control valve is used to apply load on the specimen.
- 29. Functions of Universal Testing Machine The main functions of UTM are to test the mechanical properties of materials. The standard tests performed by UTM are: Tensile Test Compression Test Adhesion Tests Pull-Out Tests Bending Test Hysteresis Test
- 39. TENSILE TESTING