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Extensometers
Extensometers measure strain, the change in length of a specimen divided by the original length (gauge length) of the specimen. Tinius Olsen offers wide range of extensometers based on your testing needs including video, optical and physical contact with specimen.
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High Temperature Axial Torsional Extensometers (1200 C or 1600 C)
Model 7650
Jinan Testing Equipment IE Corporation
Model 7650 extensometers are primarily used on round specimens tested in bi-axial test machines capable of simultaneous axial and torsional loading. All models are capable of bi-directional displacement in both axes and may be used for strain-controlled fatigue testing under fully reversed load and strain conditions at frequencies up to 10 Hz.All 7650 models mount rigidly on the load frame and incorporate slide mounting to bring the extensometer into contact with the specimen. The gauge length is set automatically before mounting on the test specimen, which allows for hot mounting after thermal equilibrium has been reached.These units are specifically designed to minimize crosstalk between axes and to provide high accuracy, high resolution measurements. They incorporate capacitive sensors for low operating force and include electronics with programmable filtering and multi-point linearization for improved performance and accuracy. The overall design minimizes, and in many cases virtually eliminates, any influence from common lab environment vibrations.These water-cooled extensometers are equipped with high purity alumina rods with conical rod tips for specimen contact when testing to 1200℃(2200°F). Silicon carbide rods are used for the 1600℃ (2900°F) high temperature option.
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Video Extensometers
The VE1 is a high precision video extensometer that uses a non-contacting optical measurement based on a digital camera and real time image processing to measure the longitudinal and transversal strain during tensile tests.
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Axial Torsional Extensometers
Model 3550
Jinan Testing Equipment IE Corporation
Designed for simultaneously measuring axial and torsional deflections on specimens tested in axial/torsional machines.
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Universal Testing Machine:UTM Micro
Until now, testing of very delicate and small mechanical parts such as bearings, springs, microwires, organic fibers, and micro-electro-mechanical devices was not possible with conventional universal testing machines. But Anton Paar’s universal testing machine, UTM Micro, based on the renowned Anton Paar MCR rheometer, opens up a new world of material testing. The versatile UTM machine’s sensitive MCR technology, combined with its proven modularity, and an integrated extensometer and load cell, allows you to go beyond just tensile testing. You’ll now be able to rise to all kinds of challenges, even in the fields of DMA and optical methods.
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High Elongation Extensometers
Model 3800
Jinan Testing Equipment IE Corporation
The main body of this unique extensometer remains stationary during testing, held in position by the adjustable magnetic base included. Only the very light, small traveling heads move as the sample elongates during a test. These attach to the sample with small spring clips. Each head pulls a cord out from the extensometer as the head moves. These models use high precision, low friction potentiometers, and, as a result, have a wide range of factory selectable outputs. The extensometer is driven by an excitation voltage and has output proportional to the input. They can be provided with high level outputs (approximately 2-8 VDC) or ones that mimic strain gaged devices (2-4 mV/V). When set to mimic strain gaged extensometers, the Model 3800 can be used with virtually any signal conditioning electronics designed for strain gaged sensors. The potentiometers employ a hybrid wire wound around conductive plastic, which provides excellent long term stability. The output from the extensometer is readily interfaced with most existing test controllers, and may be directly input to data acquisition systems and chart recorders. Please let us know at the time of order what type of output and connector you require.
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High Temperature Diametral Extensometers (1000 C)
Model 3580
Jinan Testing Equipment IE Corporation
This model is for diametral strain measurement with furnace and induction heating systems. Quartz rods and water-cooling allow the unit to be used for high temperature testing of metals, ceramics and composites. With induction heating, this model often can be used without water-cooling. When used in furnaces, the extensometer is often mounted directly to the furnace side cut-out. Optional load frame mounting brackets are available for supporting the extensometer in cases where furnace mounting is not possible. These optional mounts are used with induction heating or furnace systems. The Model 3580 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.
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High Temperature Self-Supporting Furnace Extensometers (1200 C)
Model 3448
Jinan Testing Equipment IE Corporation
Epsilon developed this unique high temperature extensometer for testing metals, ceramics, and composites at the high temperatures produced by furnaces and induction heating systems. A combination of features make these extensometers easier to use and better in performance than other similar high temperature extensometers.The units are held on the specimen by light, flexible ceramic fiber cords. These make the extensometer self-supporting on the specimen. No furnace mounting brackets are required. The side load on the test sample is greatly reduced because of the self-supporting design and light weight of the sensor. Most materials testing furnaces with a side cut-out for an extensometer will readily accept a Model 3448. For induction heating systems, a different ceramic cord placement allows the extensometer to easily pass between the coils.The combination of radiant heat shields and convection cooling fins allow this model to be used at specimen temperatures up to 1200℃ (2200°F) without any cooling. An optional tiny air fan does enhance stability at the highest temperatures and is recommended for the highest accuracy and for tests with small elongations. The fan comes with a magnetic base for support so it can be mounted at any convenient location near the extensometer. Fan cooling is not generally needed for induction heated systems. High purity alumina ceramic rods are used. These are available in lengths as required to fit your furnace. A spare set is included with every extensometer. Specify chisel, vee chisel or conical contact points as desired.Most units operate equally well in tension and compression. Thus tensile, compression and cyclic tests like low cycle fatigue can all be performed with a single unit.For vacuum furnaces, special models are available. Epsilon can also provide a radiant heat transfer cooled version. This requires that the extensometer module be surrounded by a water cooled enclosure with a front slot for the ceramic rods.
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Long-Travel Extensometer For Soft Materials
DSES-1000
A Long-Travel Extensometer That Is Now Easier to Use and Even More Precise The DSES-1000 is a long-travel contact-type extensometer able to measure displacement up to the breakpoint in tensile tests of rubber and other soft materials. The upper and lower arms are clamped to respective gauge positions using a simple single operation, with each arm tracking sample elongation independently.
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Extensometers for Indirect Tensile Testing of Asphalt
Model 3911
Jinan Testing Equipment IE Corporation
For indirect tensile testing, such as for resilient modulus, these extensometers measure the lateral deformation of specimens. They are self-supporting on the sample and clip on in seconds. The traditional way this deformation has been measured was prone to errors caused by slight rocking of the sample as it is loaded. The self-supporting design of the Model 3911 eliminates this problem. This unit will handle the dynamic pulse requirements of resilient modulus testing.The speed of mounting makes test set-up much faster than with the older method. The pivot mounting used ensures that the specimen contact pads meet the often uneven asphalt surface as well as possible. The measuring range options available allow a wide range of testing, yet can easily measure the sometimes very small displacements required.The Model 3911 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.
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Deflection Gauge Extensometers
We supply a wide range of deflection gauge extensometers ideal for measuring deformation in three and four point bend tests and in compression testing applications.
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Fiber Optic Extensometer
Versatile and reliable fiber optic extensometer. Designed for harsh environment, these multipurpose extensometers are packaged to fit the challenging environment of any structure monitoring applications.
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Miniature Transverse (Diametral) Extensometers
Model 3475
Jinan Testing Equipment IE Corporation
A miniature extensometer designed for general purpose transverse or diametral strain measurements on small or thin specimens. May be used simultaneously with the Model 3442 miniature axial extensometers or the Model 3542 axial extensometers.
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Automatic Contacting Extensometry
AUTOX750
Automatic contacting extensometers provide this capability by eliminating manual operator steps which can add time and introduce operator influence.
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Circumferential Extensometers
Model 3544
Jinan Testing Equipment IE Corporation
Designed for concrete and rock compression testing or for compression tests on other large samples. This model may be used simultaneously with the Model 3542RA axial extensometers.
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Miniature Axial Extensometers
Model 3442
Jinan Testing Equipment IE Corporation
Weighing as little as 8 grams, these miniature extensometers are designed to have very low operating force with minimal specimen influence. All use an improved version of Epsilon’s dual flexure design which makes them very rugged for their size. With a module height of 15.2 mm (0.6 inches), they will fit in the limited space between grips that is typical with small test samples. Gauge lengths can be as short as 3 mm or as long as 50 mm. A newly designed gage setting pin and assembly allows the gauge length to be set accurately and repeatably to ASTM and ISO requirements for all gauge lengths. Reengineered quick attach wire forms provide simple and secure specimen attachment. Wire forms for round and flat specimens are included, as well as flat, 3-point, and vee knife edges. The wire forms may be removed to enable mounting using elastic bands or springs. A tethering attachment point provides fall protection and enables counterbalancing of the extensometer’s weight when testing delicate specimens.Model 3442 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller and Epsilon will equip the extensometer with a compatible connector wired to plug directly into the controller. For systems lacking the required electronics, Epsilon can provide a variety of solutions for signal conditioning and connection to data acquisition systems, chart recorders, or other equipment.
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Miniature Averaging Axial Extensometers
Model 3442RA1
Jinan Testing Equipment IE Corporation
With gauge lengths of 1 and 2 inches (25 and 50 mm) and measuring ranges of 0.050 and 0.100 inches (1.2 and 2.5 mm), the Model 3442RA1 was designed for applications where tensile or compressive strength tests on small rock, concrete and other small compression samples is desired.
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Automatic Extensometer
SIE-560A/560SA
To determine the suitability of a material for an application where it is under load, measuring its elongation is important. Measuring elongation enables determination of the elastic modulus (reversible elongation in the elastic region) by measuring the small initial elongation range, and determination of elongation at specimen failure, by measuring larger irreversible elongation in the plastic region. Shimadzu’s SIE-560A series automatic extensometers accomplish both of these measurements with high accuracy, and provide automated functions that increase testing efficiency and test reproducibility. Ideal for testing a wide variety of materials, including metallic materials, plastics, and composites, the SIE-560A series complies with ISO 527, JIS K 7161, and ASTM D638 standards for plastics tensile testing. In addition, the SIE-560A series supports strain-rate controlled metallic material tensile testing measurements specified in ISO 6892, JIS Z 2241, and ASTM E4
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High Temperature, Low Strain, Extended Performance Capacitive Extensometers
Model 7650A
Jinan Testing Equipment IE Corporation
Model 7650A extensometers measure strains with extremely high precision due to their design features and low strain range. All models are capable of tension and compression strain measurement, and may be used for fatigue testing under fully reversed load and strain conditions at frequencies up to 10 Hz.All 7650A models mount rigidly on the load frame and incorporate slide mounting to bring the extensometer into contact with the specimen. The gauge length is set automatically before mounting on the test specimen, which allows for hot mounting after thermal equilibrium has been reached.These units are specifically designed to provide high accuracy, high resolution measurements and perform high temperature fatigue testing at the highest possible frequencies. They incorporate capacitive sensors for low operating force and include electronics with programmable filtering and multi-point linearization for improved performance and accuracy. The overall design minimizes, and in many cases virtually eliminates, any influence from common lab environment vibrations.These water-cooled extensometers are equipped with high purity alumina rods for specimen contact when testing to 1200℃ (2200°F). Silicon carbide rods are used for the 1600℃ (2900°F) high temperature option.The Model 7650A is often customized for specific test needs. Contact Epsilon for a configuration that matches your requirement.
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One-Touch, Strain Gauge Extensometers
SSG-H Series
The SSG-H series of strain gauge extensometers are compliant with ISO, JIS, and ASTM tensile test standards for hard plastics and metal materials Featuring a wide elongation measurement range with the ability to measure using small gauge lengths, these lightweight, clip-on strain gauge extensometers attach to both rod and flat plate specimens.
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Averaging Extensometers for ASTM D5656 Shear Tests
Model 4013
Jinan Testing Equipment IE Corporation
The Model 4013 extensometer meets the requirements of ASTM D5656 for measuring the strain properties of an adhesive in shear. It uses different contact point spacing compared to the extensometer shown in D5656. This makes it much easier to mount and eliminates the slippage problems associated with the design shown in the ASTM standard. The Model 4013 is available with all of Epsilon’s temperature configurations. It has a 3.0 mm (0.12 inches) full scale measuring range. The conical point contacts included with the extensometer are made from tungsten carbide.The Model 4013 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.
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Fracture Mechanics Clip-On Gages
Model 3541
Jinan Testing Equipment IE Corporation
The Model 3541 is designed for determination of fracture mechanics parameters such as JIC, KIC, R-curve, fatigue crack growth rate (da/dN), and testing to standards such as E1820, E399, E647, etc. These COD gages conform to the requirements of E1820 (the replacement for E813 and E1737) for JIC and R-curve determination. Special configurations are available to meet the requirements of ASTM E399 for fracture toughness (please consult the factory for these configurations). In addition, the modified groove design complies with E1820 tests where greater stability and accuracy results from the sharper groove root. Clip-on gages are used for a variety of fracture mechanics tests, including compact tension, arc shaped, disk shaped, bend specimens or other specimen geometries in compliance with ASTM and other standards organization’s test methods. Clip-on gages can be used directly on test specimens where the knife edges are integral with the test specimen or, alternately, with optional bolt-on knife edges mounted on the test specimen.The Model 3541 extensometers are strain gaged devices, making them compatible with any electronics designed for strain gaged transducers. Most often they are connected to a test machine controller. The signal conditioning electronics for the extensometer is typically included with the test machine controller or may often be added. In this case the extensometer is shipped with the proper connector and wiring to plug directly into the electronics. For systems lacking the required electronics, Epsilon can provide a variety of solutions, allowing the extensometer output to be connected to data acquisition boards, chart recorders or other equipment.
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Extensometers
Extension measurement is one of the areas that complements our range of UTM program. The result is a comprehensive range of high class variations. The product selection is arranged as follows:*Non-contact extensometers with and without measurement marks.*Contact extensometers: Sensor arm extensometers, incremental and analogue clip-on extensometers as well as extensometers for compression and flexure tests.
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High Temperature Transverse Extensometers (700 C)
Model 7675
Jinan Testing Equipment IE Corporation
Designed for transverse or diametral strain measurement in environmental chambers where the entire extensometer must be exposed to elevated temperatures. These capacitive extensometers may be used up to 700 C (1300 F) without any cooling.
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Sheet Metal r-Value Extensometers
Model 3575AVG
Jinan Testing Equipment IE Corporation
Designed for measuring r-values in sheet metal testing, this extensometer averages the lateral strain at two locations. This model may be used simultaneously with the Model 3542 axial extensometer.
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Extensometers for Simple Performance Testing of Asphalt
Model 3909
Jinan Testing Equipment IE Corporation
Designed for measuring axial displacements in the simple performance tests prescribed by NCHRP Report 465, and determining dynamic modulus of hot mix asphalt per AASHTO TP062.
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High Temperature, Low Strain Capacitive Extensometers (1200 C or 1600 C)
Model 3648
Jinan Testing Equipment IE Corporation
These extensometers use a high temperature capacitive sensor in combination with an innovative design to achieve high accuracy strain measurements in low measuring ranges not possible with other high temperature extensometers. They mount on a slide bracket (included) that can attach to the load frame of your test system; optional load frame mounting brackets are available. The overall design reduces any influence from common lab environment vibrations.The standard temperature version (to 1200℃) is supplied with high purity alumina rods. The high temperature option is furnished with alpha grade silicon carbide rods. Rods are made to order to the length required for your furnace. These units are made to order in many different gauge lengths and measuring ranges.The extensometer comes with a signal conditioner. The output is an analog DC voltage, factory calibrated with the extensometer to 0 to ±10 VDC typically. They are readily interfaced with most existing test controllers, and may be directly connected to data acquisition systems and chart recorders. Bringing the signal into a spare DC input channel (or external input) on the test controller allows the extensometer to be used for strain controlled tests like low cycle fatigue.
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Contacting Extensometers
AMETEK Sensors, Test & Calibration
The contacting extensometers are designed for accurate strain and extension measurement of a material up to a maximum sample thickness of 25 mm.
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Biaxial Clip-on Extensionmeters
The Instron 2650 Series Biaxial Extensometers are ideally suited for testing a wide range of materials, including polymer matrix composites, metals, and plastics over a range of temperatures. Two sensors measure axial strain on opposite sides of the specimen and a third sensor measures transverse strain. The extensometers meet the calibration requirements of ASTM E83 class B1, ISO 9513 class 0.5, and ISO 527.
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Non-Contact Digital Video Extensometer
TRViewX
TRViewX is an advanced non-contact extensometer that offers high-measurement accuracy, is capable of measuring width changes, and is applicable to a wide variety of materials testing applications. In particular, due to the non-contact design, TRViewX is perfect for measuring films, foils, and other thin or narrow materials without affecting the specimen during testing. Furthermore, TRViewX can be used to measure displacements during atmosphere-controlled testing in a thermostatic chamber. TRViewX provides high-accuracy measurements in accordance with ISO 9513 Class 0.5 and JIS B 7741 Class 0.5 for elongation measurements and ISO 9513 Class 1 and JIS B 7741 Class 1 for width measurements. It is compliant with plastic tensile testing standards, including ISO 527, JIS K7161, and ASTM D638, even supporting 75 mm gauge length specimens (type A1 specimens) specified in ISO 527 and JIS K 7161.
