An experimental study of the interfacial fracture behavior of Titanium/CFRP adhesive joints under mode I and mode II fatigue

•Calculation of SERR through a newly developed analytical model.•ΔG excluded the thermal component for the joint under study.•Correction of the reduced severity in the ENF case.•For DCB dUdA, ΔG and Gmax without the thermal terms agreed on threshold values. In the present paper, the mode I and II fa...

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Bibliographic Details
Published in:International journal of fatigue 2020-07, Vol.136, p.105586, Article 105586
Main Authors: Adamos, Lucas, Tsokanas, Panayiotis, Loutas, Theodoros
Format: Article
Language:English
Subjects:
Adhesive joints
Adhesives
Aluminum
Crack propagation
Fatigue failure
Fatigue fracture behavior
Fracture toughness
Materials fatigue
Metal sheets
Metal/composite adhesive joint
Similitude parameter
Stiffness
Titanium
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Summary:•Calculation of SERR through a newly developed analytical model.•ΔG excluded the thermal component for the joint under study.•Correction of the reduced severity in the ENF case.•For DCB dUdA, ΔG and Gmax without the thermal terms agreed on threshold values. In the present paper, the mode I and II fatigue fracture performance of a novel Titanium/CFRP adhesive joint is investigated. The adhesive joint under study is composed of two thin adherents, one Titanium sheet and one CFRP laminate, and is reinforced from both sides with two thick aluminum beams to increase its flexural stiffness and ensure the non-yielding of the Titanium. The interfacial fracture resistance is in the focus and aspects such as the loading that defines the crack propagation threshold as well as the utilization of an appropriate Paris-like law to optimally describe the experimental data are under investigation.
ISSN:0142-1123
1879-3452
DOI:10.1016/j.ijfatigue.2020.105586