Accurate axial strain measurement

Reduce inconsistencies and improve the accuracy of test results with an MTS Fundamental™ Automatic Extensometer (FAX). The high-resolution automatic extensometer is suitable for a wide variety of applications that require linear strain measurement. The FAX can determine a variety of calculation including modulus, offset yield and plastic elongation to failure.

FAX offers a fast and highly accurate contact measurement for tensile testing on a wide range of materials such as plastics, composites, metals and rebar. Designed to automatically trace and measure specimen deformation, the MTS FAX performs standard axial measurement. Improve lab productivity with the automatic self-adjusting gage length positioning to ensure test consistency.

The FAX enables higher accuracy and greater versatility of axial deformation measurements. The innovative design of the support can keep the extensometer moving along the center of the specimen synchronously to ensure measurement precision. It is designed with a high precision measure up to 0.05 μm in resolution and meets the requirements of ISO and ASTM test methods.   

• Axial strain measurement for tensile testing on Universal Test Systems
• High resolution of up to 0.05 µm
• Designed for longevity and high-volume testing
• Meets or exceeds requirements for calibration according to ASTM E83 Class B1 and ISO 9513 Class 0.5 standards

Two Mounting Options

 Intuitive design allows operators to quickly position the extensometer out of the test area.

• Fixed Mount attaches the FAX and moves simultaneously with the crossbeam of the Universal Test System
• Rotational Mount allows the operator to quickly rotate the FAX out of the test area for easy access to the specimen

Testing Results

• E (elastic modulus)
• Rt (specified total elongation intensity)
• n (strain hardening index)
• At (total elongation at break)
• Agt (total elongation at maximum force)
• μ (Poisson’s ratio)
• Rp (specified plastic elongation length)
• r (plastic strain ratio)
• Ae (yield point elongation)
• Ag (plastic elongation at maximum force)
• A (percentage elongation after fracture)

MTS SERVICES _ ACCESSORIES CATALOG

MTS FUNDAMENTAL AUTOMATIC EXTENSOMETER (FAX) BROCHURE

MTS EXTENSOMETER CATALOG