ISO 1798 Tensile Strength Flexible Cellular Polymeric Materials
ISO 1798 method determines the tensile and deformation properties of flexible cellular materials when extended at a constant rate of displacement until failure. These properties include tensile strength and elongation at break.
The challenges with this specimen:
- Specimen gripping
- Repeatable strain measurements
- Reporting test results in compliance with the standard
- Specimen gripping – Gripping options include pneumatic side action grips and advanced screw-action grips. Pneumatic side acting grips provide a constant clamping force to ensure no slippage occurs and ensures repeatable results.
- Repeatable strain measurements – Advanced strain solutions include non-contacting extensometer, such as the Advanced Video Extensometer (AVE2) and automatic contacting extensometer, such as the AutoX750. These solutions require little influence from the operator, resulting in improved repeatability. Contacting long travel extensometers also meet the measurement accuracy requirements of the standard.
- Reporting test results in compliance with the standard – Instron Bluehill® Universal testing software advanced methods available with pre-configured calculations ensure compliance with the standard report requirements.
It is important to review ISO 1798 to fully understand the test setup, procedure, and results requirements.
The Instron® model XL (long travel) extensometer is a precise device for measuring strain in highly extensible materials such as elastomers, semi-rigid plastics and films.
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Screw side-action grips provide a very simple and efficient method for holding test specimens in a wide range of applications. The dual - acting design of 2710-100 series grips means that jaw faces can be adjusted to accommodate different specimen thicknesses. This ensures that the line of tensile force remains concentric with the grip body. They can be equipped with a selection of interchangeable grip jaw faces in various sizes and choice of surfaces including smooth ground, rubber-coated and serrated. Line contact and special coated faces are also available.The unique ‘snap-on’ jaw face attachment makes changing faces extremely quick and simple.
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Üblicherweise erfolgt die Dehnungsmessung bei der Werkstoffprüfung mit einem berührenden Dehnungsaufnehmer. Solche berührenden Dehnungsaufnehmer ermöglichen bei vielen Anwendungen genaue Messungen, können aber andererseits auch negative Auswirkungen auf das Prüfergebnis haben. Aus diesem Grund brachte Instron® 1991 den ersten kommerziellen Video-Dehnungsaufnehmer auf den Markt.
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Die Prüfmaschinenserie 3300 wurde für die Anforderungen standardisierter und routinemäßiger Prüfungen entwickelt. Diese Serie stellt dem Benutzer Instron-Qualität zu einem sehr günstigen Preis zur Verfügung.
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5900 Universal Testing Systems are engineered for precision, built for durability, and offer the flexibility for changing requirements. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator. A wide range of models are available for testing capacities from < 100N up to 600kN.
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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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