Low temperature mixed-mode debond fracture and fatigue characterisation of foam core sandwich

Arash Farshidi, Christian Berggreen*, Leif A. Carlsson

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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 languageEnglish
JournalJournal of Sandwich Structures and Materials
Number of pages16
ISSN1099-6362
DOIs
Publication statusAccepted/In press - 2019

Keywords

  • Mixed-mode bending
  • Low temperature
  • Sandwich
  • Face/core interface
  • Fracture toughness
  • Fatigue crack propagation

Cite this

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title = "Low temperature mixed-mode debond fracture and fatigue characterisation of foam core sandwich",
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.",
keywords = "Mixed-mode bending, Low temperature, Sandwich, Face/core interface, Fracture toughness, Fatigue crack propagation",
author = "Arash Farshidi and Christian Berggreen and Carlsson, {Leif A.}",
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doi = "10.1177/1099636218779420",
language = "English",
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Low temperature mixed-mode debond fracture and fatigue characterisation of foam core sandwich. / Farshidi, Arash; Berggreen, Christian; Carlsson, Leif A.

In: Journal of Sandwich Structures and Materials, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Low temperature mixed-mode debond fracture and fatigue characterisation of foam core sandwich

AU - Farshidi, Arash

AU - Berggreen, Christian

AU - Carlsson, Leif A.

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - Mixed-mode bending

KW - Low temperature

KW - Sandwich

KW - Face/core interface

KW - Fracture toughness

KW - Fatigue crack propagation

U2 - 10.1177/1099636218779420

DO - 10.1177/1099636218779420

M3 - Journal article

JO - Journal of Sandwich Structures & Materials

JF - Journal of Sandwich Structures & Materials

SN - 1099-6362

ER -