TY - JOUR
T1 - The effect of strain rate on the orientation of the fracture plane in a unidirectional polymer matrix composite under transverse compression loading
AU - May, Michael
AU - Ledford, Noah
AU - Isakov, Matti
AU - Hahn, Philipp
AU - Paul, Hanna
AU - Nagasawa, Sumito
N1 - Funding Information:
The authors thank SUBARU CORPORATION for the funding of this research.
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/11
Y1 - 2020/11
N2 - Transverse compression tests on a unidirectional composite were performed under quasi-static and high-rate loading conditions using servo-hydraulic machines as well as a direct impact Hopkinson bar. Aside the expected increase of compressive strength with increasing loading rate, a change of fracture plane orientation was observed. For quasi-static loading conditions, the fracture angle was 54.5°, for high rate-loading conditions this increased to 65°. Assuming a Mohr-Coulomb type of fracture for unidirectional composites under transverse compression loading, the change of fracture plane orientation indicates a rate dependency of the internal friction angle ϕ, which has not previously been reported for composite materials.
AB - Transverse compression tests on a unidirectional composite were performed under quasi-static and high-rate loading conditions using servo-hydraulic machines as well as a direct impact Hopkinson bar. Aside the expected increase of compressive strength with increasing loading rate, a change of fracture plane orientation was observed. For quasi-static loading conditions, the fracture angle was 54.5°, for high rate-loading conditions this increased to 65°. Assuming a Mohr-Coulomb type of fracture for unidirectional composites under transverse compression loading, the change of fracture plane orientation indicates a rate dependency of the internal friction angle ϕ, which has not previously been reported for composite materials.
KW - A. Polymer-matrix composites (PMC)
KW - B. Fracture
KW - B. Impact behaviour
KW - D. Mechanical testing
KW - Hopkinson Pressure Bar
UR - http://www.scopus.com/inward/record.url?scp=85089244679&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85089244679&partnerID=8YFLogxK
U2 - 10.1016/j.compositesa.2020.106057
DO - 10.1016/j.compositesa.2020.106057
M3 - Article
AN - SCOPUS:85089244679
VL - 138
JO - Composites - Part A: Applied Science and Manufacturing
JF - Composites - Part A: Applied Science and Manufacturing
SN - 1359-835X
M1 - 106057
ER -