Tire cord is extremely strong, and gripping the test specimen can be challenging. Designed to be strong and durable, these cords provide critical reinforcement and structure to tires, and are an integral part of the automobile’s safety. Testing must be performed with utmost care, making sure to avoid inducing early failure from gripping incorrectly.
Instron has a range of capacities for cord grip's that were designed specifically for these hard-to-grip specimens. These grips have a smooth, curved face that distributes the stress evenly along a large section of the specimen, greatly reducing the chance of jaw breaks.