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Moisture Effects on Patch Bonded Composite Repairs

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Abstract:

The present work investigated the effects of moisture absorption on the residual tensile strength of unnotched, notched and double-patch repaired carbon/epoxy composites. Patches were bonded to the parent plate using Araldite2015 adhesive. Specimens were aged in demineralised water at 70°C and tested at moisture content of 0% (dry), 3%, 6% and 7%. Results showed that upon ageing, a maximum of 11% and 17% of strength reduction was found in unnotched and repaired specimens, respectively. On the contrary, a maximum of 15% increment in strength was observed in notched specimens. In addition, good fits to the experimental data were found using the proposed residual strength model, with the maximum difference of less than 6%.

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Periodical:

Key Engineering Materials (Volume 709)

Pages:

3-6

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.709.3

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Online since:

September 2016

Authors:

King Jye Wong*, Xiao Jing Gong, Shahram Aivazzadeh, Mohd Nasir Tamin

Keywords:

Moisture Effects, Patch Repaired Composites, Residual Strength Model

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