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Computerzed Universal Testing Machines

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Computerzed Universal Testing Machines

Features :

Universal Testing Machines have a wide range of applications and number of materials, metals in different form and shapes can be tested for variety of tests like Tension, Compression, Transverse, Bend, Shear, Brinell Hardness etc.Special attachments are also available for testing of Flat Belts, Chain Links, Wire Ropes etc.

Loading Frame :

The base has a hydraulic cylinder at its center and two main screws at both ends. The middle cross head is mounted on screws through main nuts. The middle cross head can be moved up or down through chain transmission and geared motor to adjust the initial tensile/compression clearance. Inside base of machine, hydraulic cylinder is sested in which piston is placed on the piston, rests an assembly of upper, lower cross head and two columns.The individually lapped cylinder piston assembly ensures smooth axial force with minimum friction.

Control Panel :

Hydraulic circuit it consists of hydraulic power pack which has a directly driven radial plunger pump which gives continuous non pulsating flow of oil pressure up to 250bar a pressure compensated needle type flow control valve is obtained with help of valves. Optionally this can be controlled form electronic system.

Loading Rate / Straining Rate Control :

This is superfine controlling system which controls loading rate / straining rate as per commands from electronic machine control system. FINE UTM Software can send loading rate / straining rate to electronic system for fully automatic testing.

Load Measurement System :

The oil pressure in the main cylinder is also transferred to an electronic pressure transducer which gives proportionate signal to electronic unit. Both the motors for hydraulic operation and cross head motion are controlled by buttons on electronic control system and they have interlocked to prevent simultaneous working of motors. The electrical panel is housed in control panel. Displacement measurement is carried out by means of a rack and pinion on rotary encoder. Encoder signal is fed to electronic system to get displacement.

Operation :

Tension test is conducted by gripping the test specimen in the upper and middle cross head. Compression, Bending, Transverse, Shear and Hardness tests are conducted between the middle and lower cross head by using appropriate fixtures. The rapid adjustment of middle crosshead facilitates easy fixing of tensile / Compression specimens of different lengths.

Hydraulic controls are through hand operated valve, ergonomically placed for ease of control. Optionally valves can be controlled form electronic control system.Adequate safeties for over load and over travel are incorporated and emergency switch is provided.

Accuracy & Calibration :

Every machine is calibrated in accordance with procedure laid down in BS-1610-1964 IS 1828-1991. 'FMI' Computerised Universal Testing Machines comply with gradeAof BS 1610-1964 and Grade 1.0 of IS 1828-1991. An accuracy of ± 1% guaranteed from 2% to 100% of capacity of the machine. In the computerised UTM, the computer is an integral part of the entire system and not just on ADD ON feature. This puts a lot of power and versatility into the hands of the operator and makes the system much more self contained than usual, as it includes many functions usually only available as additional (often expensive) optional features.

Features of FINE UTM software :
  • Menu driven form system with colour graphs to compare sample test results
  • Test details and reports are stored in database
  • User programmable master test templates
  • User can select test from master test Templates and can start similar test
  • Load and Elongation is continuously displayed on screen
  • Overload protection for machine by electronic control
  • Tare Load and Reset Elongation facility available
  • User selectable sample break detect condition
  • Load rate and strain rate are also displayed while testing
  • Unlimited Load rate and strain rate control steps
  • With Load rate controller, user can hold the load on specimen for unlimited time
  • With Load rate control, user can specify positive or negative Rate of Loading
  • User selectable units for load and displacement (kg, kN,N, Ibf, mm, cm, inch etc.) Results and graphs are automatically displayed accordingly
  • On line display of Load and Displacement (Stress, Extension, Strain) etc. while test is conducted
  • Provision of auto zeroing of Elongation at preload set by user
  • User Programmable Reports. User can select Header, Footer, Specimen information, Dimensions, Testinformation, Test results, Stastical analysis as per his need
  • Generated reports can be exported to PDF file and can be e-mailed
  • If electronic extensometer is used then proof stress values from 0.1% to1%can be determined
  • Software will give alert to user to remove extensometer when load crosses .2% of Gauge length selected then proof load value is calculated. (With extensometer)
  • Separate graph of extensometer and encoder is displayed
  • Provision of calculation of Load and Elongation at yield, Peak load and Load at break, Yield stress, Ultimate stress etc
  • Special software for tensile, compression, bend, TOR steel and other test software as per customer requirements

* Available with loadrate / Strain Rate / Controller

Sample Colored Multigraph for test :

A Micro controller based machine control system :
  • Full fledged sealed membrane alpha numeric keyboard for data entry
  • 16 x 2 Lines LCD Graphics display with backlit for displaying Load and Elongation of crosshead with bigger font size
  • Load indicated with resolution of 0.01% of machine capacity for entire range
  • Elongation is measured with resolution of 0.01 mm.
  • Controller for load rate and strains rate control
  • Auto detection of overload and over travel and specimen break. On detection of any condition
  • hydraulic system is automatically turned off
  • Tare load and Reset Elongation facility Peak Load and Elongation at Peak, Load at break
  • Elongation at break, UTS, %Elongation, %reduction in area ,Yield load etc. results for offline test
  • RS232C interface for computer connectivity
  • Built in centronics parallel port / Serial Port for printer interface

Technical Specification :
Specifications Models
TFUC-100 TFUC-200 TFUC-400 TFUC-600 TFUC-1000 TFUC-2000
Measuring Cap. (kN) 100 200 400 600 1000 2000
Measuring Range. (kN) 0-100 0-200 0-400 0-600 0-1000 0-2000
Least Count (kN) 0.005 0.01 0.016 0.024 0.04 0.08
Load Range in kN with accuracy of Measurement
± 1%
2 to 100  4 to 200 8 to 400 12 to 600 20 to 1000 40 to 2000
Resolution of Piston movement (mm) 0.01 0.01 0.01 0.01 0.01 0.01
Max. tensile clearance at fully descended piston position 50 to 700 50 to 700 50 to 700 50 to 800 50 to 850 50 to 900
Maximum clearance for Compression test (mm) 0 - 700 0-700 0-700 0-800 0-850 0-900
Distance between columns (mm) 450 500 500 600 750 850
Piston Stroke (mm) 150 200 200 250 250 300
Maximum straining speed at no load (mm/min) 300 150 150 100 80 45
Power Supply 3 phase 415V 50 / 60 Hz A.c.
H. P. (Total) 1.5 1.5 2.5 2.5 4.0 6.5
Overall dimensions (Approx) (mm L x W x H) 1950 * 800 * 1850 2000 * 800 * 1900 2100 * 800 * 2060 2200 * 800 * 2400 2350 * 800 * 2700 3000 * 800 * 3600
Weight (Approx in kg) 1300 1400 2000 3000 4200 10000

Other Special Accessories :
  1. Load stabilizer for maintaining desired load
  2. Extensometer (Mechanical type)
  3. Extensometer (Electronic type)
  4. Printer, plotter, UPS
  5. Attachments for Brinell Test, Shear Test,
  6. 180 Bend Test Nut & Bolt Testing, Bend Re-bend etc
  7. Attachment for testing of wire ropes

Notes :
  1. Special attachment for specific test requirement can also be supplied
  2. Load stabilizer should be ordered along with machine itself

Standard accessories :
Specifications Models
TFUC-100 TFUC-200 TFUC-400 TFUC-600 TFUC-1000 TFUC-2000
Tension Test JAWS For :
           
Round specimen dia (mm) 10 - 20 10-20 10-25 10-25 10-25 20-40
Round specimen dia (mm) 20-30 20-30 25-40 25-40 25-45 40-60
Round specimen dia (mm) - - - 40-55 45-70 60-80
Flat specimen Thickness (mm) 0 - 10 0-10 0-15 0-15 0-22 0-22
Flat specimen Thickness (mm) 10 - 20 10-20 15-30 15-30 22-44 22-45
Flat specimen Thickness (mm) - - - - 44-65 45-70
Max. width for Flat specimen (mm) 50 50 65 70 70 90
For Compression Test :
           
Pair of Compress Plates dia Ø(mm) 120 120 120 120 160 220
For Transverse Test :
           
Adjustment roller supports width (mm) 150 150 150 160 160 200
Diameter (mm) 30 30 30 50 50 70
With Max. adjustable clearance (mm) 450 500 500 600 800 900
Punch Taps of Radius (mm) 6 6 6 16 16 30
Radius (mm) 12 12 12 22 22 40

FMI Reserves the rights of change in above specification due to constant improvement in design.

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