NG-EML – Dual Column Bench Top and Floor Standing – Universal Testing Machine (20kN-50kN)

Dynamometers serve various purposes, including the verification of testing equipment used to gauge the resistance of materials and goods. Standardized requirements must be met by these machines, especially in relation to the intensity of applied forces. International standards ISO 7500-1 and ISO 7500-2 address metallic materials.

The force measurement system for uniaxial static testing machines in tension/compression of metallic materials is verified and calibrated according to ISO 7500-1. These checks are made using tension and/or compression load cells that have been calibrated and categorized under ISO 376 standards.

The verification of force exerted by uniaxial creep testing equipment under the tension of metallic materials is covered in SO 7500-2. Tension load cells that have been previously calibrated and categorized in accordance with ISO 376 Standard are used to carry out this verification.

Even though the ISO 7500-1 and 2 Standards only apply to metallic materials, they are frequently applied to other materials when a specific suitable standard has not yet been published.

NextGen’s Universal Tensile Testing Machine – Class C complies with ISO 7500, Class 1 & Class 2 calibration standards.

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Metals are used for various needs in many different production sectors as well as in homes in the form of household items. The physical and mechanical qualities of metals, such as ductility, hardness, malleability, and strength, make them very useful. Metals are frequently used for applications with a high demand for durable and robust materials. Everyone knows that metals are the hardest materials and are frequently utilized to withstand common impacts, wear, and scratches.

Manufacturers must ensure that the raw materials they are using for production are of the highest calibre. Using highly standardized and superior testing equipment, the properties of the metals can be ascertained. Numerous tests are carried out to ascertain the metals' quality, including corrosion, corrosion resistance, and hardness testing. These tests provide incredibly accurate results and make determining quality simply.

NextGen’s EML Class C Universal Testing Machine has the following test force capacity parametres: 20kN, 30KN, 50kN.

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Metals are used most commonly in important applications, including aerospace, aviation, weight lifting equipment, electrical cables, household goods, and many others due to their unique combination of qualities. These businesses have no tolerance for errors or flaws because these applications are so crucial. Therefore, it is essential to assess the metals' quality before using them for various production-related tasks. Metals are tested to make sure they can withstand difficult working conditions without difficulty.

If a metallic material satisfies the specifications of a desired application, its mechanical qualities must be tested. The most often measured properties when anything is being tested are the elastic limit, yield strength, tensile strength, and compressive strength. Metals are also tested to determine their rigidity, shear strength, bend strength, flexure strength, fatigue strength, and time-dependent behaviours like creep and stress relaxation. The behaviour that a metal material might be anticipated to display during loading and over the course of its application is accurately represented by these numbers.

NextGen’s EML Class C Universal Testing Machine load frame configuration parameters are: Dual column, Floor Model, Electromechanical.

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The methods used to test other materials, including plastics or composites, are frequently quite similar to those used to test metals. Metals are subjected to flexure, bend, shear, and torsion testing, although the tension, compression, and fatigue tests are the most frequently used. The metal sample is subjected to a load along one of its axes during tension and compression testing, pulling the material apart or pushing it together. Although they can be stopped at any point, these tests are typically carried out until the sample fails or ruptures.

To pass shear and torsion tests, the sample must undergo opposing loads at each end that act perpendicular to the sample's axis. A torsion test twists the ends of the sample, so it fails in a turning motion, whereas a shear test pulls the ends, so it fails in a sliding motion.

NextGen’s EML Class C Universal Testing Machine Test Space: Single or Dual Testing Zones.

Crosshead travel 45.3" (115cm)

Customizations available.

Test with

16.5" (42cm)

Customizations available.

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The EML Class C Series meets the requirements of routine and standardized testing while offering the user outstanding quality at the most competitive price.

NextGen’s EML Class C Universal Testing Machine Features:

• Complete selection of sturdy, compact dual column load frame
• High-speed, low-vibration electromechanical drive
• Precision, pre-loaded ball screws
• Linear motion guides for superior alignment
• Versatile, easy-to-use software with pre-programmed industry standards library (ASTM, ISO, DIN, EN, BS, and more)
• High-resolution, digital closed loop controls (integrated into load frame)
• Automatic limit checking of crosshead position, overload, over temperature, over voltage, etc.
• Complete selection of grips, fixtures, environmental systems and extensometers
• Durable test space protection

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Metals must undergo mechanical testing to determine how well they function under rigorous conditions and whether they meet national or international standards.

The guarantee that a metal or alloy will be acceptable for a product's intended application or fits industry criteria is necessary for foundries, fabricators, manufacturers, metal stocks, importers, and welding inspectors.

When necessary, calibration at the same discrete force levels must be performed, first with increasing force levels and subsequently with decreasing force levels, to ascertain the relative reversibility error v. In this situation, a force-proving instrument calibrated for descending forces in line with ISO 376 must be used for the calibration. To calculate the reversibility error, only one series of measurements with decreasing force levels is necessary.

A hardness test evaluates a metal or alloy's resistance to permanent indentation, and the depth or size of the indentation is measured to get a hardness value. We employ the Brinell, Vickers, and Rockwell procedures, among another hardness testing.

NextGen’s EML Class C Universal Testing Machine test force accuracy is ±0.5% of reading.

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Calibration under ISO 7500 must be done for all force ranges and force indicators. Where employed, any auxiliary devices that have the potential to interfere with the force-measuring system must undergo verification.

Each force-measuring system on a testing machine should be treated as a distinct testing machine if the equipment includes several force-measuring systems. For double-piston hydraulic machines, the same technique must be performed. With the following exception: employ known masses if the force to be verified is below the lower limit of the smallest capacity force-proving device used in the calibration method. The calibration must be performed using force-proving instruments.

Each force-measuring system on a testing machine should be treated as a distinct testing machine if the equipment includes several force-measuring systems. For double-piston hydraulic machines, the same technique must be performed. With the following exception: employ known masses if the force to be verified is below the lower limit of the smallest capacity force-proving device used in the calibration method. The calibration must be performed using force-proving instruments.

NextGen’s EML Class C Universal Testing Machine complies with ISO 7500 Calibration Standard.

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Tensile testing is used to identify flow curves under tensile load and material characteristics. On a universal testing machine, the specimen is drawn to fracture while being formed in quasi-static conditions. A load cell is used to quantify force during the forming process, and a video extensometer is used to measure the change in specimen length without physical touch. From there, it is possible to calculate both the engineering stress-strain diagram and the real stress-strain diagram. Determine typical metrics, including yield strength, tensile strength, and uniform elongation, using the technical stress-strain diagram. As an alternative, measuring local strains using an optical 3D measurement device is possible.

High-frequency pulses are necessary for metal testing because they can deliver a focused beam of energy, but these frequencies are inappropriate for use with heterogeneous materials due to the significant attenuation that these materials experience when the pulses pass through them.

NextGen’s EML Class C Universal Testing Machine force range is 0.4 - 100%FS.

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Metal testing specimens can essentially have any shape. Typical shapes include dog bones, dumbbells, rods, bars, cylinders, cubes, bricks, tubes, and dumbbells. The microstructure of test samples composed of metal and those made of other materials differ from one another. Metals can go through procedures that change their microscopic makeup, including heating, quenching, annealing, and others. The metal's properties, such as its strength, hardness, and ductility, are changed specifically by changing the grain size, grain orientation, and dislocations.

NextGen’s EML Class C Universal Testing Machine typical specimens:

• Small components
• Reinforced plastics
• Metals
• Wire
• Composites
• Elastomers
• Wood products
• Textiles
• Biomaterials
• Paper products
• Adhesives
• Foam
• Consumer products

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• Both controller software and professional test software are operating independently. Controller software processes calibration and can define transducer information such as connection number definition and calibration data.
• Windows 7 to latest OS version compatible, 32bit and 64bit
• It is simple to define software access for various levels of operators, such as a lab manager, an operator, and others, using user authorization management.
• Real-time display of transducer value, such as crosshead, load cell, and extensometer
• Displaying many graphs, switching between them in real time, and plotting force, location, extensometer, stress, strain, time, etc.
• To assist you rapidly and effectively meet the criteria of international test standards like ASTM, ISO, DIN, EN, BS, and more, pre-packaged test methods are available.
• Simple programming of testing standards and testing procedures using intuitive expression
• Testing report customization
• Young's modulus, proof stress, yield stress, stress strain, tensile strength, elongation at break, compressive strength, and bending strength are examples of common test results that analysis can produce.

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The two column Class C testing systems are appropriate for testing applications requiring load ranges between 20kN and 50kN, such as tension, compression, flexure, and other tests. They are typically used for quality control and production testing.

Impact testing is used to determine a material's ability to absorb energy when forcibly shattered. Impact testing, which gauges the metal's "toughness," sometimes employs the Charpy or Izod techniques.

The behaviour of the metal when it is being pulled is studied via tensile testing, also known as tension testing. Yield strength, proof strength, and ultimate tensile strength can all be determined using tensile testing. A variety of testing equipment from Intertek can test up to 1000kN.

Hardness testing evaluates how well a metal or alloy resists permanent indentation, and the size or depth of the indentation is quantified to get a hardness value. There are various hardness tests, and we employ the Brinell, Vickers, and Rockwell techniques.

NextGen’s EML Class C Universal Testing Machine Force Resolution is 1/500,000FS.

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NextGen’s 500 digital controller offers high speed and closed-loop control of load, displacement and extension.

• High dependability, four-layer PCB architecture, and resistance
• Connector with locking capability, constructed for sturdiness and longevity, with a clean, sensible interface that is simple to plug and unplug.
• 6 channel 24-bit AD measurement channel
• Up to 1200Hz sampling frequency
• Up to 1200Hz closed loop control frequency
• 20-bit resolution digital input
• With a maximum signal collection frequency of 4MHZ, three channels of high-speed digital acquisition are employed to gather orthogonal pulse signals from devices such as photoelectric encoders and grating rulers.
• Higher sampling frequencies are supported, and the transmission rate is significantly boosted to support the Ethernet/USB interface mode. To implement a sophisticated TCP/IP protocol cluster, the Ethernet interface uses a specialized high-performance Ethernet interface chip and hardware logic gate circuit, which offers several benefits like high reliability and good security.
• Transducer self-identification system (TEDS) functionality, online software configuration of interface features, and more logical system architecture
• It has three closed-loop control functions (force, extension, and displacement) that enable all-digital three closed loop force, extension, and displacement control. Each control loop can smoothly transition between various modes and control rings by automatically switching between them.
• Perfect limit protection, overload protection, emergency stop and other safety protection functions

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Strong advice Self-lubricating columns improve lateral stiffness and guarantee linear crosshead motion. This leads to accurate crosshead alignment, which lowers measurement data variability and improves overall accuracy.

Heavy strength bearings and pre-loaded ball screws ensure extended life, zero backlashes, and linear low force and through zero performance. As a result, measurements are precise and reproducible, accurately reflecting specimen features as opposed to load frame flaws.

Lead screw covers that are fully shielded have a longer lifespan and higher operator protection.

Column covers are made of lightweight aluminum with chamfered corners to make access to the test area easier. T-slots are pre-installed for quick, easy installation of testing accessories and placement.

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The EML Class C Series provides the user with outstanding quality at the most competitive price and satisfies the needs of standardized and routine testing. For testing applications requiring load ranges between 20kN and 50kN, such as tension, compression, flexure, and other tests, dual-column Class C testing systems are suitable. Normally, they are involved in production testing and quality control.

A wide variety of accessories are available to suit test needs in practically every application and industry, including textiles, metals, composites, elastomers, components, biomedical, automotive, and aerospace.

• Tension grip
• Peel/tear fixture
• Compression fixture
• Flexure fixture
• Film COF test fixture
• S type load cells: 10N-5kN
• Long travel extensometer
• Clip-on extensometer
• Environmental chamber
• T-slot table
• Others

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Here are the technical specifications table of NG-EML Class C:

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Tensile is a material's capacity to be stretched or dragged out to the point where cracks or strains become visible. Tensile strength, which refers to the resistance to breaking under impacts or stresses, is a different, more popular phrase.

You must ensure that any metal components you use in your products or projects are secure, trustworthy, and up to strict regulatory standards. Our metal testing machines assist you in identifying and evaluating the qualities of your metal components to establish their integrity, dependability, and safety.

Tensile testing or tensile strength tests are crucial in the manufacturing of sheet metal because they can be used to determine how reproducible a given product will be. This is particularly helpful for the mass manufacture of metal products because each item needs to have roughly the same tensile strength readings. Even if a single sheet of a metal coil is manufactured in the same facility, material qualities will still vary, affecting the part's quality and scrap rate.

NextGen’s EML Class C Universal Testing Machine position accuracy is ±0.50% of reading.

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In contrast to tensile strength tests, where a specimen is put through one full execution, fatigue tests are conducted with a cyclical load that continuously increases the material's stress. To measure tension or compression this test is carried out at a specific frequency or using alternating load testing.

In fatigue testing, material failure occurs when the damage appears on the specimen after being repeatedly stressed. Understanding why metal components that have been in service for a while may suddenly fail requires this kind of testing. Frequently, this failure happens not as a result of a single overload but rather a prolonged pattern of recurrent stress.

High-cycle testing and low-cycle testing are two further subcategories of fatigue testing methodologies. The high cycle fatigue strength and the finite life fatigue strength are calculated for the high cycle test. Examples of these two types in usage are turbine blades and stationary power generators that experience disc strain from continuous use.

NextGen’s EML Class C Universal Testing Machine position resolution is: 0.06μm.

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The majority of 1.5-millimetre-thick sheets of mild steel or low-carbon steel will most likely have a Rockwell B hardness rating. Simply said, the Rockwell hardness scale measures a material's resistance to permanent deformation and penetration by other materials. This is typically done for some forms of steel, such as tool and cutting steel designed to be more durable than the norm.

As previously established, mild steel has a Rockwell B hardness rating that ranges from the mid-to high-seventies. The indenter, anvil, and specimen are the three primary parts of this kind of testing.

A reference depth is created for the measurement by pressing the minor load against the specimen. Around 10 kg/cm2 of force is applied for Rockwell B.

An additional load is forced onto the sheet metal's surface in order to obtain deeper penetration. It is taken away, then a light load is put back on.

By calculating the difference between the depth of the material and the reference depth, the Rockwell B hardness rating is determined.

NextGen’s EML Class C Universal Testing Machine crosshead speed is 0.001 ~ 500mm/min.

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The tensile test is frequently used as an acceptance test for the specification of materials as well as to provide fundamental design information on the strength of materials. It is done to figure out the elastic modulus, % elongation, yield strength, and ultimate tensile strength. A specimen is put through a test in which a continuously rising uniaxial tensile force is applied to it while at the same time being watched for elongation. The typical stress-strain curves for two different alloys are shown in the images below. Only by using an extensometer attached to the test specimen when the load is applied will accurate stress-strain curves be produced.

The Rockwell test uses the penetrator's depth of movement under a constant load to determine the hardness of a material. The deformation's elastic component reduces the entire movement. In contrast, the load is divided by the area of the indentation made while pushing the matching indenters into the metal in the Brinell and Vickers/Knoop scales. As a result, while the Brinell and Vickers/Knoop need optical measurements of the diameters or diagonals, the Rockwell number can be read directly from a gauge that is a component of the tester.

NextGen’s EML Class C Universal Testing Machine crosshead speed accuracy is: ±0.5% of set speed.

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There are various test methods available when it comes to metal testing. All of the machines have to use specific load cells in order to deliver the most accurate results. While it might be assumed that all indentation hardness tests have the same objective, each has distinct advantages, with some being more suited to particular types of materials and size and shape parts than the others. Forgings and cast irons are the main applications for Brinell. Because of its broad test area, it is possible to acquire an average representative value in a material that has features or phases with wildly dissimilar properties (i.e. graphite, matrix, carbides, etc.). Vickers, Knoop, and Rockwell are utilized in nearly all other applications as well as for case depth calculations and very small, thin parts.

NG EML Class C Universal Testing Machine Load Cell:

• High precision USA made Interface load cell offers high stiffness, high stability, and high linearity
• Over load protection, lateral loading protection
• Bi direction allows tension and compression test
• Self-recognition (TEDS) function
• Regular self-calibration
• Working temperature: 55℃-90℃

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The supplied load cells can measure from 0.2%~100% of their specific load cell capacity.

For example, when using a 50kN load cell one can measure 100N~50kN force without a need for an additional (smaller) load cell.

If the operator requires to measure readings lower than 100N, simply purchase an additional, smaller load cell (E.g 10kN) which gets installed under the master load cell (50kN), so the measurement range can extend to 20N-50kN.

NOTE:
Since the force resolution is 1/500000FS, for 10Kn load cell, the resolution is 10*1/500000=0.00002KN.

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Yes, the Class C 50kN tensile testers can be purchased with a furnace add-on. The furnace will allow to bring the temperatures of the tested tensile specimen up to your desired temperature ranged, depending on your temperature requirements.

NextGen offers a full scope of furnaces and cooling chamber to meet your tensile testing needs. Contact us to learn more today.