Bicycle frame from hemp fibre filament wound composites
This work presents an initial study for hemp fibre produced in Thailand. The study focuses on the application of the filament winding technique in the production of hemp-epoxy composite tubes for a bicycle frame. The motivation is to produce hemp fibre composites from locally available resources in Thailand. For the initial trail, existing bicycle steel tubes were replaced by ±45° filament wound hemp-epoxy composites with thin aluminium inner layers. The mechanical properties of the hemp-epoxy composites were studied according to the ASTM standard. Two static load cases were chosen and considered for a 100 kg cyclist sitting on the saddle and pedalling while standing. The internal forces and moments were calculated for the frame and frame tubes. The stress and buckling analyses were performed using the finite element method for frame tubes considering the above loading cases. The finite element analysis shows that hemp-epoxy composite tubes with ±45° fibre orientation can be used as bicycle frame tubes and meet the design specifications under the considered static load conditions. The filament winding process was accomplished successfully at KMUTNB using an automated desktop filament winding machine.
Authors who publish with Technologies for Lightweight Structures (TLS) agree to the following terms:
The corresponding authors confirm with their imprimatur that the article’s publication in Technologies for Lightweight Structures and the copyright terms have been approved by all the other coauthors.
Authors retain copyright and grant Technologies for Lightweight Structures the right of first publication.
If the paper is accepted for publication the content is licenced under a Creative Commons Licence “Attribution 4.0 International (CC BY 4.0)”. This permits use, distribution, and reproduction in any medium, provided the original work is properly cited, and is otherwise in compliance with the licence. Alternative Creative Commons Licences may be assigned in duly justified cases after consultation with the publisher (mail to: firstname.lastname@example.org).
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., publish it in a book), with an acknowledgement of its initial publication in Technologies for Lightweight Structures.
Authors are permitted and encouraged to post the peer-reviewed, pre-copyedited version (post-print) of their articles online (e.g., in institutional repositories or on their website) prior to and during the submission process as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access). If authors wish to republish an article, they are kindly asked to include the following acknowledgment as well as a link to the original source of publication in Technologies for Lightweight Structures to secure consistent citations:
This is a peer-reviewed, pre-copyedited version of an article accepted for publication in the open access journal Technologies for Lightweight Structures (TLS). The original publication with full bibliographic citation is available online at: xxx [insert DOI received upon publication].
For further questions, feel free to contact us via e-mail.