White Paper

Laser Cut Nitinol Tubing Fatigue Coupon: FEA's Role In Design, Testing, And Endurance Limit Determination

Source: Dassault Systemes Americas

By Stephen J. Forcucci

Laser Cut Nitinol Tubing Fatigue Coupon: FEA’s Role In Design, Testing, And Endurance Limit Determination

Nitinol medical device implants made from laser cut tubing often require a fatigue assessment, which makes determining the material fatigue properties necessary. Towards the goal of determining the strain-based endurance limit of medical grade super-elastic Nitinol tubing, a coupon was designed and evaluated via FEA using Abaqus software, produced via laser cutting, shape setting, and electro-polishing processes, and then fatigue tested to 10 million cycles. This white paper discusses the FEA’s role in design, testing, and endurance limit determination within the Nitinol tubing coupon. Download the full paper for more information.