Experimental investigation of interfacial crack arrest in sandwich beams subjected to fatigue loading using a novel crack arresting device-Reference-Cited by-同舟云学术

Experimental investigation of interfacial crack arrest in sandwich beams subjected to fatigue loading using a novel crack arresting device

Published:2017-03-01 Issue:2 Volume:21 Page:401-421
ISSN:1099-6362
Container-title:Journal of Sandwich Structures & Materials
language:en
Short-container-title:Jnl of Sandwich Structures & Materials

Author:

Martakos G¹,Andreasen JH¹,Berggreen C²,Thomsen OT¹³

Affiliation:

1. Department of Mechanical and Manufacturing Engineering, Aalborg University, Aalborg East, Denmark

2. Department of Mechanical Engineering, Technical University of Denmark, Lyngby, Denmark

3. Faculty of Engineering and the Environment, University of Southampton, Highfield, Southampton, UK

Abstract

A recently proposed face-sheet–core interface crack arresting device is implemented in sandwich beams and tested using the Sandwich Tear Test configuration. Fatigue loading conditions are applied to propagate the crack and determine the effect of the crack stopper on the fatigue growth rate and arrest of the crack. Digital image correlation is used through the duration of the fatigue experiment to track the strain evolution as the crack tip advances. The measured strains are related to crack tip propagation, arrest, and re-initiation of the crack. A finite element model is used to calculate the energy release rate, mode mixity and to simulate crack propagation and arrest of the crack. Finally, the effectiveness of the crack arresting device is demonstrated on composite sandwich beams subjected to fatigue loading conditions.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Mechanics of Materials,Ceramics and Composites

Link

http://journals.sagepub.com/doi/pdf/10.1177/1099636217695057

Reference32 articles.

1. New peel stopper concept for sandwich structures

2. Crack kinking of a delamination at an inclined core junction interface in a sandwich beam

3. Fracture behaviour at tri-material junctions of crack stoppers in sandwich structures

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