Research project srPET
Project name Charakterisierung und Modellierung der Mikrostruktur-Eigenschafts-Beziehung selbstverstärkter Polymere am Beispiel von PET hinsichtlich des Ermüdungs- und Schädigungsverhaltens
Acronym srPET
Project partner
Grantor Deutsche Forschungsgemeinschaft (DFG, German Research Foundation),
Duration 05/2026 to 04/2029

Research field
M+M
(E+E > Energy + Environment
I+I > Information + Intelligence
M+M > Matter + Materials)
Project content
Conventional composite materials are characterized by high specific stiffness and strength and offer enormous potential for a wide range of technical applications. However, their recycling is challenging because fiber and matrix are hardly separable.
Self-reinforced polymers, in contrast, are fully polymer-based, recyclable thermoplastic composites in which fiber and matrix belong to the same polymer family. This results in excellent interfacial adhesion between fiber and matrix, but it also influences damage initiation and damage evolution under mechanical loading.
There is still a lack of comprehensive studies on fatigue behavior and damage development under long-term cyclic loading, as well as on the representation of this knowledge in constitutive models.
The aim of the project is the systematic analysis of self-reinforced polyethylene terephthalate (PET) and the derivation of adapted damage and lifetime models.