%0 Journal Article
%T Study on static and dynamic characteristics of nettle每polyester composite micro lathe bed
%A C Raja Kumaran
%A J Jayachandresh
%A N Mahendrakumar
%A PR Thyla
%A PV Mohanram
%J Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
%@ 2041-3076
%D 2019
%R 10.1177/1464420716663568
%X Nowadays, natural fibre-reinforced composites find applications in almost all engineering fields. This work is an attempt to realise improvement in dynamic characteristics of micro lathe bed using Himalayan nettle (Girardinia heterophylla) polyester (NP) composite as an alternate material. In order to study and validate the improvements envisaged, a cast iron micro lathe bed is considered as reference. Numerical (FE) model of the cast iron micro lathe bed was developed and validated through experimental static and modal analysis. Finite element analysis of the micro lathe bed with the existing cast iron material as well as with nettle每polyester composite as alternate material was also carried out using worst case cutting forces, and based on the relative performances, the need for form design modification for the proposed material was identified. To enhance the bending and torsional stiffness of the nettle每polyester composite lathe bed, various cross sections and rib configurations were studied and the best among them was identified and the same was implemented in the nettle每polyester composite micro lathe bed design. Finite element analysis of the newly designed nettle每polyester composite micro lathe bed was performed and the improvements in dynamic characteristics were evaluated. The newly designed nettle每polyester composite micro lathe bed was fabricated and the predicted enhancement in static and dynamic characteristics was verified experimentally. The studies indicated that nettle每polyester composite could be considered as a suitable alternate to cast iron structures in machine tools
%K Nettle每polyester composite
%K form design
%K ribs pattern
%K constant stiffness design
%K finite element analysis
%K natural frequency
%K damping ratio
%U https://journals.sagepub.com/doi/full/10.1177/1464420716663568