Universiti Teknologi Malaysia Institutional Repository

An extended thickness-dependent moisture absorption model for unidirectional carbon/epoxy composites

Azizan, Azisyahirah and Johar, Mahzan and Karam Singh, Salvinder Singh and Abdullah, Shahrum and Koloor, Seyed Saeid Rahimian (2021) An extended thickness-dependent moisture absorption model for unidirectional carbon/epoxy composites. Polymers, 13 (3). pp. 1-13. ISSN 2073-4360

Full text not available from this repository.

Official URL: http://dx.doi.org/10.3390/polym13030440

Abstract

Moisture absorption tests for materials that exhibit non-Fickian behavior generally re-quire a relatively long period to reach saturation. Therefore, it would be beneficial to establish a relationship between the moisture content and the thickness to minimize the experimental time and cost. This research characterizes the moisture absorption behavior of AS4/8552 carbon/epoxy composites. Specimens were prepared at 4, 8, and 16 plies and immersed in distilled water at 60?C. The relationship between the non-Fickian parameters (Fickian to non-Fickian maximum moisture content ratio f, non-Fickian diffusivity per square thickness a, and non-Fickian initiation time to ) and thickness was characterized using a thickness-dependent model. A comparison with other materials revealed that all three non-Fickian parameters are able to be fitted using a power law. Nevertheless, the upper boundary for the applicability of this model was not determined in this study. The Weibull distribution plots indicate that the probability of non-Fickian moisture absorption is influenced by f and a at approximately 62% within a normalized thickness range of 2–3. In regards to to, it is 82% at a normalized thickness of 6. Therefore, the Weibull distribution is proposed for the assessment of non-Fickian moisture absorption based on the material’s thickness.

Item Type:Article
Uncontrolled Keywords:Moisture absorption, Non-Fickian
Subjects:T Technology > TJ Mechanical engineering and machinery
ID Code:94923
Deposited By: Widya Wahid
Deposited On:29 Apr 2022 22:22
Last Modified:29 Apr 2022 22:22

Repository Staff Only: item control page