title: Testing of biomaterials, accelerated ageing.
abstract: The residual elongation is a critical property of materials used for manufacturing diaphragms of artificial hearts. It is therefore important to check goods received or to control manufactured diaphragms, whether their creep properties are within the required limits. Ordinary creep tests take at least several months, while the release of goods received or diaphragms manufactured should be possible within a few days. Acceleration of the creep test by increasing the test temperature permits an estimation whether the creep properties of a material are within the required limits within a week.
mesh_terms: D006354:Heart, Artificial; D008422:Materials Testing; D011140:Polyurethanes; D011475:Prosthesis Failure; D013314:Stress, Mechanical; D013696:Temperature; D013997:Time Factors
chemical_list: D011140:Polyurethanes