Company: Sandner

Sandner - EXR, Extensometers for fracture mechanics

For static and fatigue tests in fracture mechanics applications

Mainly used in static and fatigue testing machines for strain measurements.

EXR crack opening extensometer for compact tensile test specimens (CT). Generally, the EXA extensometer is combined with a pair of measuring blades in accordance with ASTM E-399 and an extensometer with an expanding spring attachment. Crack opening values are assigned via the calibration curve, crack length values are used to determine the material properties.

Properties

EXR extensometers are suitable for tensile, bending and fracture mechanics tests on test specimens, original components and assemblies of any profile.

EXR extensometers are included in the scope of delivery:

  • Extensometer in storage case with 500 mm cable and Lemosa plug.
  • ASTM standard knife edges and tangs
  • Pressure spring
  • Screwdriver
  • Nylon string
  • Locking pin or gauge block
  • Data sheet with all transducer-specific data, such as hysteresis, measurement error and sensitivity.

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Consulting

We support our customers in the development of test methods and search for suitable instrumentation.

Installation, Calibration, Maintenance

Our after-sale service starts with commissioning and continues throughout the entire life cycle.

Training

We provide on-site instructions, software briefings, telephone support and remote maintenance. For specific topics we and our manufacturers offer seminars and customer-specific on-site training courses.

Modernisation

We evaluate and deliver modernisations with new components, controllers and latest generation software.

Demonstration

We demonstrate Instruments either in our own laboratory, at exhibitions, at other customer's labs or at the supplier's lab.

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