Abstract
This paper experimentally investigates the effects of low temperature on
fracture toughness and fatigue debond growth rate in foam core sandwich
composites. Mixed-mode bending specimens were statically and cyclically
tested inside a climatic chamber at a low temperature (−20°C) and at
room temperature (23°C) as a reference. Testing was conducted in mode I
(opening) and mixed-mode I/II (opening-sliding) mode mixities. The
fatigue tests results are presented according to the modified
Paris–Erdogan relation. Results showed substantial fracture toughness
reduction due to low temperature. Low temperature furthermore elevated
the cyclic crack growth rate.
Original language | English |
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Journal | Journal of Sandwich Structures and Materials |
Volume | 22 |
Issue number | 4 |
Pages (from-to) | 1039-1054 |
ISSN | 1099-6362 |
DOIs | |
Publication status | Published - 2020 |
Keywords
- Mixed-mode bending
- Low temperature
- Sandwich
- Face/core interface
- Fracture toughness
- Fatigue crack propagation