View in EDS PDF Full Text

Transverse cracking in CFRP cross-ply laminates with interlaminar resin layers.

Saved in:
Bibliographic Details
Title: Transverse cracking in CFRP cross-ply laminates with interlaminar resin layers.
Authors: Ogihara, Shinji, Takeda, Nobuo, Kobayashi, Akira
Source: Advanced Composite Materials. 1998, Vol. 7 Issue 4, p347. 17p.
Subjects: Laminated materials, Composite materials
Abstract: In recent years, interlaminar-toughened laminates have been developed in which resin rich layers are placed in interlaminar regions in order to enhance the interlaminar fracture toughness of CFRP laminates. In the present study, a predictive method is developed for transverse cracking in CFRP cross-ply laminates with interlaminar resin layers at 0/90° interfaces under static tensile loading. The analysis is based on a two-dimensional approximate elastic analysis considering the interlaminar resin layers and thermal residual stresses. To predict transverse cracking, both energy and stress criteria are used. The change in thermoelastic properties of a laminate due to transverse cracking is also predicted. To investigate the validity of the analysis, loading-unloading tests are performed to obtain Young's modulus reduction as a function of the transverse crack density. The predictions of transverse crack density as function of the laminate strain are compared with our previous experimental results. A good agreement is obtained which implies the validity of the present analysis. [ABSTRACT FROM AUTHOR]
Copyright of Advanced Composite Materials is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:In recent years, interlaminar-toughened laminates have been developed in which resin rich layers are placed in interlaminar regions in order to enhance the interlaminar fracture toughness of CFRP laminates. In the present study, a predictive method is developed for transverse cracking in CFRP cross-ply laminates with interlaminar resin layers at 0/90° interfaces under static tensile loading. The analysis is based on a two-dimensional approximate elastic analysis considering the interlaminar resin layers and thermal residual stresses. To predict transverse cracking, both energy and stress criteria are used. The change in thermoelastic properties of a laminate due to transverse cracking is also predicted. To investigate the validity of the analysis, loading-unloading tests are performed to obtain Young's modulus reduction as a function of the transverse crack density. The predictions of transverse crack density as function of the laminate strain are compared with our previous experimental results. A good agreement is obtained which implies the validity of the present analysis. [ABSTRACT FROM AUTHOR]
ISSN:09243046
DOI:10.1163/156855198X00246