Impact resistance of a twin matrix composite material through quasi-static testing
A. Bombace (TU Delft - Aerospace Engineering)
O.K. Bergsma – Mentor (TU Delft - Group Bergsma)
B. Kumru – Mentor (TU Delft - Group De Breuker)
Baris Caglar – Graduation committee member (TU Delft - Group Çaglar)
J. Sinke – Graduation committee member (TU Delft - Group Sinke)
N. Lorenz – Graduation committee member (TU Delft - Group Kumru)
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Abstract
Twin matrix composites consists of fibre bundles impregnated by a hard matrix. These bundles are then embedded in a flexible polymer to increase the transverse failure strain of the laminae, but a tougher flexible matrix should also provide better impact resistance. In this thesis, a twin matrix composite is made using carbon pultrusions embedded in a vitrimer, and its behaviour under impact is tested using a quasi static indentation test and compared to a traditional unidirectional laminate. The twin matrix composite exhibits higher deflection, and a non destructive test using ultrasounds revealed lesser delamination area at the same energy and strain rate than the UD one.