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RSA-G2 Solids Analyzer The new RSA-G2 is the most advanced platform for mechanical analysis of solids. The separate motor and transducer technology of the RSA-G2 ensures the purest mechanical data through independent control of deformation and measurement of stress. It is capable of performing the most accurate DMA measurements as well as many additional experiments including creep and recovery, stress relaxation, stress ramps, strain rate ramps, iso-strain, iso-force, fatigue, multiwave, arbitrary waveform, and dielectric thermal analysis. With such a broad range of solid analysis techniques,...

theory DEFORMATION OF SOLIDS The RSA-G2 imposes a mechanical deformation to a specimen and measures the resulting stress response. The science concerned with the study of deformation and flow of materials is called rheology. Deformation is the relative change in shape of a body, or STRAIN, under the influence of an external force, or STRESS. Flow is a continuous relative change in shape per unit time, or STRAIN RATE, under influence of external STRESS. The RSA-G2 is in fact a linear rheometer, or a precision instrument, which contains a specimen of the material of interest in a geometric configuration,...

• Phase Separation (Polymer Blends, Copolymers, ...) • Composites • Aging (physical or chemical) • Curing of Networks • Gelation • Cross-linking Reactions • Crosslink Density • Orientation Effects • Effects of Additives • Resiliency • Stress-strain Curves • Shrink Force • Mullins Effect • Dynamic Fatigue • Impact Strength • Toughness THE BENEFITS OF RHEOLOGY Solid and soft solid materials encounter a range of mechanical deformations (stresses and strains) over a wide variety of environmental conditions in practical daily use. This is important for nearly every industry, including aerospace, asphalt, automotive,...

specificationsRSA-G2 SOLIDS ANALYZER RSA-G2 SPECIFICATIONS Minimum Force Maximum Force Force Resolution Dynamic Displacement Range Displacement Resolution Modulus Range Modulus Precision Tan 8 Sensitivity Tan 8 Resolution Frequency Range Temperature Control Temperature Range Heating Rate Cooling Rate Isothermal Stability Note: Standard sample clamps are for use to a maximum temperature of 500°C. Optional sample clamps are required for testing to 600°C.

The RSA-G2 Provides Independent Measurements of Stress and Strain When it comes to making the most accurate mechanical measurements, two heads are better than one! The mechanical behavior of solid polymers and other materials is described by material functions such as the modulus or compliance. The modulus is the ratio of stress to strain and the compliance is the ratio of strain to stress. In order to make the purest and most accurate viscoelastic measurements, it is best to measure the fundamental parameters of stress and strain independently. This approach, taken by the TA Instruments RSA-G2,­leads...

RSA-G2 Design Advantage At the heart of the RSA-G2 dual-head solids analyzer is the high performance drive motor and unique transducer. The sample is deformed from the bottom by a direct-drive DC-Servo motor featuring all new electronic DSP control. The force generated in the sample is measured at the top by the patented Force Rebalance Transducer(FRT). The RSA-G2 FRT incorporates a highly sensitive position sensor and linear motor with temperature-compensated rare-earth magnets to ensure the most accurate force measurements.The FRT directly measures sample force from the current required to...

Temperature Control Temperature and environment control for the RSA-G2 is provided by the new Forced Convection Oven, FCO. The FCO is an air/N2 gas convection oven designed for optimum temperature stability, extremely rapid heating and cooling, and ease of use over the temperature range of -150 to 600 °C. The maximum controlled heating rate is 60 °C/min. Obtaining the -150 °C minimum temperature requires an optional liquid nitrogen-cooling device. Alternatively, an optional mechanical cooling is possible down to a minimum temperature of -80 °C. Superior temperature stability is achieved through...

High-Speed Electronics and Data Processing The RSA-G2 is equipped with new high-speed electronics with digital signal processing for transducer measurements and motor control. While many manufacturers cut costs by combining the test station and electronics into a single box, the separate electronics approach of TA Instruments RSA-G2 isolates the precision measurements from heat and vibration. This approach ensures the best sensitivity and data quality from the test station.The electronics enable fully integrated high-speed data acquisition for transient (up to 8000Hz) and oscillation (up to 15000Hz)...

RSA-G2 Clamping Systems The RSA-G2 features a variety of sample clamps that provide multiple modes of deformation to accommodate a wide range of sample stiffness.The RSA-G2 can easily characterize films, fibers, soft foams, pressure sensitive adhesives (PSA), thermoplastic or thermoset bar sam­­ ples, high modulus composites, metals, and even medium to high viscosity polymer melts in shear sandwich. All sample clamps are constructed from 17-4 PH steel for maximum rigidity. Standard sample clamps are for use to a maximum temperature of 500 °C. Optional stainless steel sample clamps required for...

Dual and Single Cantilever Cantilever modes are also known as “clamped” or “supported” bending modes because the support and deformation points are mechanically fixed to the sample. In dual cantilever the sample is clamped at both ends and at the center. The same clamp is used for single cantilever and the sample is clamped between one end and the central clamp. Single cantilever allows for testing of shorter sample lengths. Cantilever is ideal for general-purpose testing of thermoplastics and elastomers and other highly damped materials, as well as measuring transitions of coatings on substrates....