Tinius Olsen

Non-Contact Video Extensometer

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Tinius Olsen’s Epsilon ONE high-precision optical extensometers measure axial strain with industry-leading resolution, accuracy and speed.
 
Innovative Instant Reset, Always On and Laser Alignment features maximize performance and increase testing throughput.
 
Tinius Olsen Epsilon ONE optical non-contact extensometers perform high-accuracy, high-resolution, non-contacting axial strain and displacement measurement. These extensometers are suitable for testing high-modulus materials such as metals and composites, high-elongation materials, thin or delicate specimens, cyclic fatigue, strain controlled testing, deflectometer applications, and measuring crack opening displacements. Strain or extension is measured and output in real time.
 
Epsilon ONE’s high resolution and ISO 0,5 / ASTM B-1 accuracy classes make it suitable for non-contact measurement of a wide range of strain values, from very small strains required to measure modulus of metals, composites, ceramics and CMCs through elastomers and everything in between.

Extensometer Information

Class-leading accuracy and resolution are achieved by Epsilon’s comprehensive optical path optimization, a unification of several optical technologies and signal processing algorithms. Ultra-high camera resolution, real-time data rates up to 3000Hz, minimization of optical error sources, and signal processing techniques provide high strain resolution and accuracy with the lowest noise. No other system on the market combines all of these technologies.

 

The Laser-Assist Alignment System provides an instant alignment and distance spot check. Epsilon ONE will project pre-aligned laser lines on the specimen before the test, revealing any misalignment. During the test, high precision telecentric lenses eliminate errors due to out-of-plane movements – on low strain materials and components. Epsilon ONE arrives factory calibrated – there are no calibration grids or gage length bars, saving a great deal of time.

 

The system sets up for new specimen types in minutes and requires very little training or skill to use. The desktop user interface software and optional Touch Interface provide continuous digital readouts and status information.

 

Epsilon ONE was designed for the fastest specimen cycle times. Auto-start repetitive tests without any software interaction; Epsilon ONE is always running, and its Instant Reset and Automatic Mark Detection eliminate software start/stop interactions common with video extensometers. Epsilon ONE fits all types of materials testing machines. The system may be used with environmental chambers that are equipped with a window

Features & Benefits

  • Non-contacting video extensometer solution
  • Resolution, accuracy and speed
  • Always on, always real time
  • Telecentric design
  • Laser assist alignment system
  • Real-time digital output
  • Better strain control
  • Applicable for testing with many ISO, ASTM standards – ISO 6892-1, 527-2, 527-4, 527-5; ASTM E8, E9, D3039, D638, A370, D3552, E646
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