Examinando por Autor "Daza Hernández, Luis David"
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- ÍtemAnálisis de falla por fatiga de un resorte helicoidalDaza Hernández, Luis David; Clavijo Velásquez, Luis Ariel; Gutiérrez Bernal, Jesús ManuelThe present project was carried out a failure analysis in a coil spring of a Chevrolet sail vehicle. The first thing that was done was a visual inspection and identification of the possible faults that this could present, in this way the practical tests were started which were carried out in the laboratory where the helical spring was mounted. In a 4 HZ® mechanical cycler, to know the cycles it supports before failing, the process is then performed to know the microstructure of the material, which indicates stunned martensite. Followed with the phases of the project was made the 5 hardness traces in HRC with different depth%. In which it was obtained that in the 0.02mm trace it gives a hardness of 51.00 HRC, that of 0.04mm of 51.00 HRC without showing any variation. In the third and fourth shot shows a small variation of 05 HRC, giving the following data equal, the 06.00mm footprint gives a hardness of 51.50 HRC and 0.08mm of 51.50 HRC. Likewise, the last shot that gives in the center of the material gives a little harder. The 0.10mm trace gives a hardness of 52.00 HRC, after the 5 marks are taken, the 5 results are added and we divide them into 5 to obtain the average of the real hardness.