Abstract

Fiber weight fraction refers to the ratio of the weight of fibers in a composite laminate to the total weight of the laminate. This variable is critical for both the design of composite structures and ensuring manufacturing quality control. In this paper, a thorough review of fiber weight fraction is conducted, utilizing both existing regulations and secondary research sources. The paper begins by highlighting the importance of fiber weight fraction in composite design and manufacturing. Next, it defines the numerical parameters that describe fiber weight fraction, providing clarity on its calculation. Various methods for determining fiber weight fraction are then outlined, each with its advantages and limitations. In addition, standard indicative values are presented based on guidelines from regulatory bodies. Following this, the influence of fiber weight fraction on the mechanical properties of composite materials, such as strength and stiffness, is discussed in detail. Finally, the paper identifies key opportunities for future research, with a particular focus on the need for deeper investigation into fiber weight fraction in non-wood cellulose fibers and recycled mats, such as recycled carbon fibers. These materials are not yet fully understood in terms of their fiber weight fraction, which could pose challenges to their broader adoption in composite manufacturing. Overall, the review provides a state-of-the-art assessment of fiber weight fraction in composite yacht construction and offers recommendations for further research to address existing knowledge gaps.

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