Design and construction of a prototype linear friction stir welding machine for acrylic.
DOI:
https://doi.org/10.70998/itistct.v4i2.147Keywords:
Linear friction, acrylic welding, pressure, stress, simulationAbstract
The main objective was to design and build a prototype of a linear friction welding machine to join acrylic, giving the industry a better option when joining this material, for the mechanical design the welding parameters were determined to be able to perform this union in acrylic, the initial method was simulation by the finite element method, The most appropriate mechanism was selected for the correct operation of the machine, an optimized CAD model was made with which later stress analysis was performed on the mechanism elements, the construction and assembly of the prototype machine was carried out, with which tests were performed to verify that the parameters obtained during the simulations are correct to perform the linear friction welding. The results of the tests indicate that in order to weld acrylic plates with the machine built, a vibration frequency of 100 Hz and an amplitude of 4 mm, fixed values in the machine, a pressure greater than 1.1 MPa and welding times greater than 8 seconds should be applied. Tensile strength and impact tests were performed on linear friction welded specimens and compared with whole unwelded specimens. It was determined that the tensile strength of the weld zone is 5% lower compared to the acrylic base material, but only reaches 12% of the impact strength of the base material.
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