EoW November 2007

newmachinery & equipment launched in 2007

Zwick scores top marks for not marking the specimen

Central taping machine – binding head

The Zwick Roell Group, is pleased to announce that they have developed a new product which will revolutionise the measurement of strain. Designed for both the measurement of young’s Modulus and strain at specimen failure using only one device, the world’s most technically advanced extensometer laserXtens makes no contact with the specimen under test and requires no specimen marking. For research and development applications, the laserXtens brings major benefits due to its high resolution, accuracy and flexibility, whilst for production control especially using robot technology, the lack of specimen marking and operator involvement enables cost effective, safe and easy to use operation.

The taping machine is designed as a central spinner and is suitable for binding core strand bundles with polyester yarn. The achievable length of twist of the wound reinforcement helix is in the region of two to four times the diameter of the strand bundles. The maximum inner diameter for strand bundles is 30mm.

The laserXtens meets class 1 of ISO 9513 (Class B2 of ASTM E83), and is designed to test materials in applications where a contact extenso- meter might be unsuitable due to its physical contact with the specimen or the whiplash experienced at specimen failure. It also enables the testing of complex component shapes which would preclude the attachment of a traditional contact extensometer.

Due to their mechanical construction traditional clip- on extensometers have limited capability when testing small components. The laserXtens can measure strain with a gauge length as low as 1.5mm. An optional transverse measuring system enables the measurement of r values. The features of the laserXtens are totally integrated into Zwick’s testXpert® software and make the total testing system very powerful and easy to use. Zwick believes that the laserXtens extensometer will bring major benefits to the metal, composite, plastics, and rubber industry, and component testing in the aerospace, automotive, medical, and the building industry. Zwick GmbH & Co KG – Germany Fax : +49 7305 10200 Email : info@zwick.de Website : www.zwick.com Zwick’s new extensometer has perfect vision – no contact and no marks ▲

The central taping machine consists of a hollow shaft with a mount for a yarn case and/or a yarn spool. A generously-sized hood enables easy access and changing of the spool. During operation the spool can be observed through a viewing window and the hood can be opened upwards from the operating side and is electromechanically locked during operation. The central taping machine is available in left and right- handed versions. Nexans Deutschland Industries GmbH & Co KG – Germany Fax : +49 511 676 3777 Email : uniwema.tech@nexans.com Website : www.nexans.de Suitable for binding strand bundles with polyester yarn ▲

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EuroWire – November 2007