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Description: The use of natural fibres is becoming more popular as environmental awareness and the search for new renewable materials increases. Hemp fibres are attached to other constituents of the hemp stalk by pectic substances, which form an interface layer between the fibre and the core. This study incorporates three important components involved during debonding process: the tensile strength of the fibre, the strength of the core and the strength of the fibre-core interface. In industry, decortication is responsible for this debonding process and it is applied to mechanically break the interface layer to obtain fibre. Therefore, understanding the properties of the fibre-core interface is required to further develop effective decorticators for industrial applications. Peeling forces were measured by using a modified peeling test in two hemp varieties under different retting conditions. Average peeling force ranged from 0.37 to 0.51 N and average work-to-peel ranged from 183 to 433 J/m2. A stochastic model was described and implemented to simulate the mechanical behaviour of the hemp fibre-core interface during a fibre peeling test. This approach was chosen because of its capability to represent the stochastic behaviour of fibre observed during debonding.

Keywords: stochastic model, hemp, peel test, debonding, fibre-core interface
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Citation: L. Guzman and Y. Chen. 2013. Stochastic modelling of hemp fibre-core interface. CSBE/SCGAB 2011 Annual Conference, Inn at the Forks, Winnipeg, Mb. 10-13 July 2011
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Date: juil-11
Technical field: Bioprocess Systems Engineering
Conference name: CSBE/SCGAB 2011 Annual Conference, Inn at the Forks, Winnipeg, Mb. 10-13 July 2011
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Type: Text.Article
Format: PDF
Publication type: Conference Proceeding
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Coverage: Canada
Language 1: en
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Rights: Canadian Society for Bioengineering
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