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Testing Solutions » By Standard » ISO » Geosynthetics

ISO 10319 Non-Contact Extensometry for Geosynthetics

Specimen

  • Geosynthetic

Materials

  • Textiles

Test Types

  • Tension

Standard

  • ISO 10319
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Geosynthetic materials are used in a wide variety of applications within civil engineering, most often to provide strength to unstable surfaces. One use of geosynthetics is debris capture, for example on construction sites where explosives are being used or in cities where construction debris must be contained. 

Geotextiles and geosynthetics are essentially composite sheets made up of a mixture of traditional textiles as well as both oil- and bio-based plastics.

ISO 10319 is a test method for determining the tensile properties of geosynthetic materials using 200 mm wide strips. The strength of these materials combined with the geometry of the specimen can prove difficult to grip with traditional methods. Instron’s solution is capstan-style grips that prevent jaw breaks and slippage.

Traditional contacting extensometry has always been difficult with textiles of any sort, and geotextiles are no different. In fact, due to the difficulties of contacting extensometers, many companies testing these materials simply rely on crosshead displacement for strain measurement. This method is less accurate than a dedicated strain measurement device.

Instron has a non-contacting solution that addresses this problem. The AVE 2 and SVE 2 optical extensometers measure elongation by tracking marks on the specimen. This method avoids any mechanical influence on strain data which can be an issue when using contacting extensometry.

The challenges of testing to this standard are:

  • Extensometry
  • Specimen gripping

Solution:
  • Instron’s non-contacting AVE 2 optical extensometer is well-suited for measuring strain on geosynthetic specimens without mechanically influencing the results
  • Capstan grips allow for proper specimen gripping while eliminating slippage and jaw breaks, and are available in capacities up to 50 kN

It is important to review ISO 10319:2015 in order to fully understand the test setup, procedure, and results requirements. 

2715 Series Webbing Capstan Grips

Catalog number 2715-003/ 004 Rated capacity 50 kN (5000 kgf, 11250 lbf)

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  • 7/15/2015
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AVE 2 Non-Contacting Video Extensometer

The second generation Advanced Video Extensometer (AVE 2) utilizes patented measurement technology in the fastest, most accurate non-contacting strain measurement device commercially available.

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SVE 2 | Non-Contacting Video Extensometer

The newest Standard Video Extensometer (SVE 2) is a high-performance, non-contacting extensometer that is ideally suited for everyday applications such as rubber, soft plastics, elastomers and other materials with high strain to failure.

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Bluehill® Universal Software

Bluehill Universal Software is built from the ground-up for touch interaction and an intuitive user experience. Discover simpler and smarter testing with features such as pre-loaded test methods, QuickTest in seconds, enhanced data exporting: and Instron Connect – a new feature that provides a direct communication link to Service. Users of previous versions of software such as Bluehill 2 and Bluehill 3 can easily upgrade to the newest version of Bluehill.

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