EPLEXOR® Series up to ± 6000 N Ultra-High-Force DMA/DMTA Dynamic-Mechanical Testing Systems Leading Thermal Analysis*

Ultra-High ForcesFOR LARGE AND HIGH-MODULUS SAMPLES Certain materials and sample geometries require high levels of force for investigating their dynamic-mechanical or static properties, including: ■ Very stiff materials such as metals, ceramics and composites ■ Specimens of larger dimensions, or even components ■ Polymers to be measured in the compression or tension mode below their glass transitions For all such cases, the ultra-high-force EPLEXOR® series by NETZSCH GABO Instruments is the perfect solution. It combines state-of-the-art technology with more than 40 years of experience in developing...

Dynamic-Mechanical Analysis Dynamic-mechanical analysis (DMA) or dynamic-mechanical thermal analysis (DMTA) is the best-suited method for determining a material’s mechanical properties as well as phase transformations such as glass transitions. DMA/DMTA Features Dynamic modulus Damping factor (tanδ) Young's (static) modulus During a DMA test, a mostly sinusoidal force (stress, σ) with a certain frequency is applied to a sample (fig. 1). The result is a sinusoidal deformation (strain, ε) as a material response (fig. 2). The deviation between the excitation and response is called phase shift (δ)....

THE UNIQUE EPLEXOR® MODULAR DESIGN PRINCIPLE EPLEXOR® Ultra-High-Force FORWARD-LOOKING SETUP The EPLEXOR® instrument line is the only DMA/DMTA series on the market with hardware that can easily be upgraded – also as a retrofit – to meet future needs. A factor such as this is important in maintaining the value of the investment. n recisio and P any ty Quali in Germ Made Unrivaled Temperature Range from -150°C to 1500°C Three different furnaces are available to cover the broadest temperature range for DMA/ DMTA testing machines on the market. Shown here is the standard furnace, reaching a maximum...

DMA Line – Best in Its Class User-Interchangeable Force Sensors for Controlling the Load In certain measurement modes (compression, tension, bending), the independently applied static force must always be higher than the dynamic force. If necessary, the force range can be extended up to 12000 N, thus allowing measurements on a broad range of materials. Dynamic Strain up to ± 25 mm Each instrument can be equipped with two strain sensors, allowing for maximum deformations of up to ± 9 mm for the EPLEXOR® 2000N/4000N or up to ± 25 mm for the EPLEXOR® 6000N systems. The strain sensors can be exchanged....

Ultra-High-Force EPLEXOR® Laboratory DMAs Universal Testing Machines The Best of Two Worlds Combined in One Instrument Line The EPLEXOR® series bridges the gap between laboratory DMA instruments offering total forces of just a few Newtons, and powerful universal testing machines covering force ranges up to several thousand Newtons. Ultra-high-force EPLEXOR® DMTAs are capable of characterizing both the linear and non-linear visco-elastic behavior of materials. This instrument line can be used for all kinds of mechanical measurements from the determination of dynamic-mechanical standard parameters...

Unmatched Force Design 2-in-1 Device – Both a DMTA and a Universal Tester Static strain transducer Servo motor with static drive Force transducers Target Dynamic strain transducer Diagram of the EPLEXOR® line illustrating the functional principle with two independent drives for static and dynamic force Only EPLEXOR® DMTA instruments have two independent drives for static and dynamic force. The static force is generated by a servo motor; the dynamic force by an electrodynamic shaker system. The two drives can be used independently, which allows EPLEXOR® instruments to be used either as classical...

Sample Holders THE RIGHT DESIGN FOR ANY SCOPE OF WORK The Modulus Result Depends on the Direction of the Applied Stress The relationship between the two modulus types is based on Poisson’s ratio, ν, which describes a material’s change-in-length relative to its change-in-width: 0 20 40 60 80 100 120 Temperature in 40 °C 0 20 60 80 100 120 Temperature in °C Comparison of the storage modulus (red) and shear modulus (blue) of a rubber sample (two specimens from the same batch), first measured in the tension mode and in a second test, in the shear mode. (applicable to linear elastic, isotopic, homogeneous...

The Right Sample Holder for Every Measurement Hydraulic clamps Compression for large samples In order to achieve reliable measurement results, appropriate sample holders for the various sample geometries are needed. The following sample holders are shown here: Compression – large and small specimens Tension – bars and strips with self-tightening mechanism 3-/4-point bending Asymmetrical 3-point bending – up to 1500°C Single/Dual cantilever Double shear Hydraulic clamps for tension Dual cantilever Double shear Additionally, special sample holders are available for fiber tests (filaments and bundles),...

Unsurpassed Versatility Humidity Generator (HYGROMATOR®) for Measurements in Controlled Humid Atmospheres To simulate various climates or to study the influence of moisture on samples, the HYGROMATOR® can be attached to any EPLEXOR® DMTA. This humidity generator works between 5°C and 95°C and provides relative humidity levels from 5% to 95%. It can be used together with a modified standard furnace (see on the right). Humidity generator connected to the standard furnace Modified standard furnace for working under humid conditions (humidity device can be exchanged) Time in min Humidity and temperature...

Immersion Tests for Studying Materials in Liquid Media Sample holders for tension, bending and compression can be inserted into a container filled with water or oil to investigate the material’s aging or the plasticizer effect of the liquid. Sample holders for 3-point bending and for tension mode Unique Combination of DMTA with Dielectric Analysis (DEA) In dielectric analysis (DEA), charge carriers (ions or dipoles) are stimulated to move within the sample by applying an external alternating electrical field. In combination with DMTA, the resulting alternating current reflects the changing dielectric...