Effectiveness of Z-Pins in Preventing Delamination of Co-Cured Composite Joints on the Example of a Double Cantilever Test
Abstract
The effectiveness of z-pins in co-cured joints is illustrated on the model of a composite double cantilever beam (DCB) subject to a standard fracture toughness test. A comprehensive solution is presented in the paper accounting for a broad spectrum of issues that affect the problem. They include the accurate evaluation of the rotational constraint provided by the intact section of DCB, possible transverse shear deformation in the delaminated section, and effects of uniform and nonuniform temperature on the response. A simple criterion for the effectiveness of z-pins in co-cured joint is introduced and its application is illustrated on numerous examples. As follows from the analysis, z-pinning is an effective method of enhancing delamination resistance of composite joints. Even a very small volume fraction of z-pins (less than 1.5%) may arrest delamination in co-cured composite joints.
Recommended Citation
L. W. Byrd and V. Birman, "Effectiveness of Z-Pins in Preventing Delamination of Co-Cured Composite Joints on the Example of a Double Cantilever Test," Composites Part B: Engineering, Elsevier, Jan 2005.
The definitive version is available at https://doi.org/10.1016/j.compositesb.2005.05.019
Department(s)
Mechanical and Aerospace Engineering
Sponsor(s)
United States. Air Force. Office of Scientific Research
Keywords and Phrases
Fracture Toughness; Laminates; Polymer Matrix Composites (PMCS)
International Standard Serial Number (ISSN)
1359-8368
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2005 Elsevier, All rights reserved.
Publication Date
01 Jan 2005
