Double-Column Electromechanical UTMs (5kN-150kN)
Bench mounted Twin-column Uiversal Material Testing Machines (UTM) are designed to measure mid- or high force ranging from 5kN (1124lbf) up to 150kN (33722lbf) and ideal for tension and compression testing where high precision is required. The universal testing machine is given the name for its capabilities of commencing more than one specific testing operation. The materials testing machines can carry out tensile, compression, flexural, friction, insertion/extraction, peeling, tearing or cyclic tests on a wide variety of materials or components. Single column testing systems featuring linear guide technology, pre-load screws and advanced software compensation are preferably chosen where free access to the test area is desirable. Thu Universal Material Testers are suitable for industrials ranging from medical devices, plastics and packaging to textiles, rubber and electronics providing high precision and versatility. Comprehensive range of grips and fixtures is supplied to accommodate specific test specimens while powerful material testing software is offered to implement the required tests.
|Force capacity||5000-50, 000 N (1124-11241 lbf)|
|Crosshead speed rage||0.01-1016 mm/min|
|Min. load resolution||0.0001 N|
|Load cell accuracy||± 0.5%|
|Data sampling rate||8 kHz|
UTMs principally either compress or extend a test specimen, simultaneously measuring the force applied and the displacement moved. Together with the geometry of the test specimen this provides the often required classic stress-strain curve for that particular material. Effectively – by using tensile grips or compression platens – one end of the specimen is fixed to the machine while the other end is moved with respect to that. The movement is typically controlled to be a constant speed, but constant loading (force) rates are also possible with modern testers. A load cell built into the machine records the force and an extensometer is often used to measure the displacement.
As an example, the general stress-strain curve for a dumbbell shaped sample of a metal specimen is shown here:
There are two common types of UTMs, distinguished by their method of loading, electromechanical or servo hydraulic. Electromechanical machines allow very precise control during the test: an electric servo motor drive system is coupled to screwed rod arrangement that moves the loading cross-arm up or down. Hydraulic machines use servo controlled valves to regulate the flow of hydraulic fluid into and out of the loading piston. These heavily built machines tend to be more suited to high force testing of metals, cements, rocks and similar where a robust machine is essential.
Dual column UTMs are high force machines with capacity up to 150kN suitable for heavy load, high accuracy testing applications while single column units are available at lower cost with capacities up to 5kN. How much maximum load you will typically need based on the type of materials you are testing is among the key issues (sample size, space availability, amount of crosshead travel, cost etc.) to consider in deciding whether to opt for a single-column or a dual-column machine.
These universal testing machines are used to determine the physical and mechanical properties of raw materials (e.g. leather, rubber, plastic, asbestos, plywood, ceramics, resins, metal, PVC, paper, textile, wire, etc.) as well as components, and ideal for product testing of finished goods such as plastics, packaging, medical devices, electronic components, textiles, metals, composites, paper and more.
Materials testing machines from Lloyd Instruments guarantee the highest level of performance and capability for production testing, quality control, laboratory testing, research and education to provide expert materials testing solutions.
A comprehensive range of material testing machines can be chosen for testing of tensile strength, compression, flexure, friction, tear, peel, adhesion, shear, ductility, insertion, shear strength and many other parameters.
The powerful NEXYGENTMPlus material testing software is developed and packaged with extensive automation features for routine QC testing, R&D and complex multi-stage testing with error-free, rapid and repeatable characters.
- Wide speed range (0.01-2032 mm/min)
- Exceptional load accuracy (better than ±0.5% down to 1% of load cell value)
- Large work surface accommodates samples
- Choice of 8 plug and play YLC Series load cells with different load ratings and resolutions
- Extensive range of grips, fixtures and extensometers
- Scalable operation from standalone to PC control
- Software integration with popular WINDOWS® software packages
These universal testing machines are used to determine the physical and mechanical properties of raw materials (e.g. leather, rubber, plastic, asbestos, plywood, ceramics, resins, metal, PVC, paper, textile, wire, etc.) as well as components, and are ideal for product testing of finished goods such as plastics, packaging, medical devices, electronic components, textiles, metals, composites, paper and much more.
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