Stefan Sieberer, Susanne Nonn, Martin Schagerl,
"Experimental Study on the Stiffness Evolution and Residual Strength of a Pre-damaged Structural Component Made from SMC CFRP Material"
, in Magd Abdel Wahab: Proceedings of the 13th International Conference on Damage Assessment of Structures, Serie Lecture Notes in Mechanical Engineering, Springer, Singapore, Seite(n) 827-836, 2020, ISBN: 978-981-13-8330-4
Experimental Study on the Stiffness Evolution and Residual Strength of a Pre-damaged Structural Component Made from SMC CFRP Material
Sprache des Titels:
Proceedings of the 13th International Conference on Damage Assessment of Structures
The mechanical characterisation of pre-damaged structural components made from sheet moulding compound (SMC) carbon-fibre reinforced polymer (CFRP) is still an open research question. This study shows the stiffness evolution of an automotive suspension part after damage initiation for a cyclic fullyreversed loading sequence with incrementally increased displacement amplitude. The cyclic test is followed by a quasi-static tensile test to estimate the residual strength of the component. Visual assessment of a highly stressed area is performed via 3D-DIC for the static and dynamic tests. As a result from the load and displacement measurements, the decrease in structural stiffness for the fatigue test is obtained and described by a logarithmic law. The residual strength and stiffness in the quasi-static tensile test gives insight into how pre-damaged structural parts can be used for limited durations (e.g. limp home mode in a passenger vehicle after light impact).