Automatic contacting extensometer; precision wedge grips

Instron launched at JEC Europe 2013 three new materials testing products.

Instron (Buckinghamshire, England, and Norwood, Mass.) launched at JEC Europe 2013 three new materials testing products.

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Instron (Buckinghamshire, England, and Norwood, Mass.) launched at JEC Europe 2013 three new materials testing products. The AutoX750 Automatic Contacting Extensometer, which supports the execution of testing routines, including tension, bending and compression, is said to deliver more reliable data (accuracy of ±1µm) in a shorter time span. Its maximum travel distance of 750 mm/29.5 inches and multiple knife edge options make it suitable for testing highly rigid composites. The key features include automatic gauge length positioning and automatic attachment to the test specimen with adjustable contact force. According to Instron, reducing attachment inconsistencies greatly improves test result repeatability and reproducibility. AutoX750 meets the strain measurement specifications of ASTM E83, ISO 9513, and ISO 527-1 (2011), is fully compatible with closed-loop strain control and complies with ISO 6892-1 Method A and ASTM E8.

Also on display were Instron’s 2716-028 Precision Manual Wedge Grips reportedly combine reliability with high precision and repeatable specimen alignment. The grips are said to be capable of meeting the stringent alignment requirements of NADCAP AC7122-1 (for nonmetal materials) and AC7101 (for metals), commonly used in aerospace. They are designed for a nominal force of 100 kN, but they can take maximum loads of 250 kN, which reportedly makes them suitable for demanding tensile tests on high-strength, fiber-reinforced polymers. The enclosed design of the grips resists dirt and debris. Their symmetrical closing is achieved with a safe and easy-to-use ratchet handle; while the test proceeds, the wedge action increases the gripping force in proportion to the applied load. Pull rods allow the grips to be used inside a compatible Instron temperature chamber, which provides a temperature range from -8°C to 250°C (18°F to 482°F) without changing parts or lubricants.

TrendTracker, the new results management package for Instron’s Bluehill 3 materials testing software, stores parameters and results obtained during mechanical testing of materials and components in a central SQL database for further processing, which accelerates the data analysis workflow in a test lab.