Manufactura y pruebas de una celda de carga para un banco de pruebas de aspas de turbinas eólicas de baja capacidad

In the present work, it is shows the design, manufacture and mechanical tests of a load cell for application in a turbine test bench of low capacity wind turbines are shown. The test bench is designed to withstand loads up to 3000 Nw and vanes up to 2.5 m in length. The general methodology of the cell design consists of, first, determining the operating loads of the bank, the selection of the type of load cell, the manufacture of this, the selection of the strain gauges for the measurement, the placement of the strain gauges in the load cell and finally the mechanical tests of the cell in the test bench. The material of the cell is aluminum 6061 and the conFiguration is type "S". As conclusions, it is mentioned that extensometric techniques allow to characterize the load cell by means of laboratory tests fulfilling the desired specifications with the design.