On-line version ISSN 1809-4430
MAGALHAES, Paulo S. G.; BRAUNBECK, Oscar A. and PAGNANO, Natasha B.. Resistance to compression and leaves removal of sugarcane for mechanical harvesting. Eng. Agríc. [online]. 2004, vol.24, n.1, pp. 177-184. ISSN 1809-4430. http://dx.doi.org/10.1590/S0100-69162004000100020.
Sugarcane holds an important place in the Brazilian economy. Grate part of the sugarcane harvested still accomplished largely manually. Sugarcane harvesters available in Brazil use the technology to chop the cane into 200 to 300 mm billets to allow on the go cane transferring to transport, contradicting the traditional method of whole stalk sugarcane harvesting system. In order to make whole stalk mechanical harvesting system possible, one of the barriers to be expired is the mechanical removal of the straw. The design of a mechanism that accomplishes this operation depends directly on the knowledge of the mechanical properties of the sugarcane related to its resistance to compression and the forces necessary to remove the leaves from the stalk. Compression tests were conducted using the universal testing machine. For leaves removal test by friction, a special apparatus was designed to allow the registration of the normal and traction force. The sugarcane stalk can resist up to 4.9 MPa. With a normal pressure of 0.8 MPa, which correspond to a friction force of 315 N, it is possible to remove the leaves, independent of its location in the sugarcane stalk.
Keywords : mechanical properties; Saccharum officinarum; green cane.