SERVO-COMPUTERISED-UNIVERSAL-TESTING-MACHINE

Servo Computerized Universal Testing Machine

This is a hydraulically controlled servo Universal Testing Machine. The main advantage of this servo system is a test can be conducted by giving a specific load rate or elongation rate. The oil flow is controlled by the closed-loop feedback from the load elongation system.
Tests with specific load steps can also be conducted.

Features

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

Category: Universal Testing Machines

Description

Software Features

Control System

Description

Servo Computerized Universal Testing Machine

Servo Computerized Universal Testing Machine (UTM) is a specialized mechanical testing device used to perform various types of material testing, including tension, compression, bending, and shear tests. It is a versatile and advanced piece of equipment commonly used in research, quality control, and manufacturing industries to assess the mechanical properties of materials.

Loading Frame

The base has a hydraulic cylinder center at its center and two main screws at both ends. The middle cross head is mounted on screws through the 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 the base of the machine, a hydraulic cylinder is tested in which a 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 a hydraulic power pact which has a directly driven radial plunger pump that gives a continuous nonpulsating flow of oil pressure up to 250 bar a pressure compensated needle type flow control valve is obtained with help of valves.
Optionally this can be controlled from an electronic system.

Loading Rate / Straining Rate Control

This is a superfine controlling system that controls loading rate / straining rate as per commands from electronic machine control system. With UP/ DOWN Keys on electronic control system loading rate/straining, rate is adjusted. 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 the 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 griping 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 places for ease of control. Optionally valves can be controlled form electronic control system. Adequate safeties for over load and ove 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’ Computerized Universal Testing Machines comply with grade A of 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 computerized 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.

Software Features

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

Control System

Machine Control System
Full-fledged sealed membrane alphanumeric 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 the resolution of 0.01% of machine capacity for the entire range. Elongation is measured with a 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 the break. Elongation at break, UTS, %Elongation, %reduction in area, Yield load etc. results for the offline test. RS232C interface for computer connectivity Built-in Centronics parallel port / Serial Port for printer interface.