This research focuses on automating the determination of grain size, the percentage of ferritic-pearlitic phases in low carbon steels by developing a metallographic analysis software programmed in Python. The direct count valuation method and the values of the G granulometric indices according to the UNE 7-280.72 standard are used. The process consisted of taking the micrographs of 4 types of steels with different carbon content, each type of steel is made with 10 micrographs with a 100x zoom, once the images are entered into the software, the program segments the light and dark regions of the image and counts the total regions and the dark regions (ferrite and pearlite) and compares them with the standard UNE. The results of the investigation were compared with the results of the commercial metallographic software PAX-it and using an ANOVA analysis showed that the differences between the results for the by grain size and the percentage of ferrite obtained with the developed software and the PAX-it they are not statistically significant and present a confidence level of 95%, validating the results.

This research carries out the dynamic analysis of light and semi-light automotive convergence diagnostic equipment, with a gross weight of up to three tons. A comparative analysis of the implications and consequences due to positive, negative, and neutral convergences is carried out. Then the different mechanical and electronic design characteristics of the device to determine the convergence in the tires. The design of the equipment has three stages: mechanical, electrical, and electronic. The mechanical stage comprises the structure of the equipment, the electrical stage consisting of the design and construction of a longitudinal motion sensor, The electronic stage formed by a microcontroller which, once the microprocessor has been programmed, performs the measurement process based on the variables: relative displacement and potential difference. The elements designed and built are integrated into the equipment, which through a test protocol was evaluated both in empty and under load.