The welding process is widely used in various applications and sectors. To ensure the
quality, safety and efficiency of this process, it is essential to monitor voltage, current
and thermal cycle settings. This need for monitoring also extends to academia, where
it is often necessary to collect this data to prepare articles, research and academic work,
especially in mechanical engineering courses, such as Welding Technology.
This project’s general objective is to develop an open source system for acquiring
welding parameters for academic and low-cost purposes, being developed completely
from the hardware to the equipment software where the system is capable of recording
and presenting in real time the current, voltage and temperature parameters during the
welding process and validated using an analysis comparative data from a data acquisition
system as a reference, SAP V4.
To validate the proposed system, the methodology of comparing the developed
system with a reference system, SAP V4, was adopted. All system sensors were calibrated,
and the comparison of the relative error of the proposed system values was
conducted using reference instruments. After calibration was completed, the system
was validated through statistical analysis, considering means, standard deviations and
coefficients of variation. This data was obtained by comparing the values recorded
by the two systems when acquiring data from 10 weld beads, where the process was
monitored simultaneously by both systems.
After complete development of the system, efficient operation was observed when
recording and presenting parameters in real time. Calibration of the sensors demonstrated
minimal relative errors compared to reference instruments, and validation of the
system using the reference system, SAP V4, proved satisfactory.
All project objectives were fully achieved, thus consolidating a significant contribution
to the advancement of knowledge in the area of welding. The project offers an
affordable and reliable tool for collecting essential data, promoting a deeper understanding
of the welding process. This achievement will not only benefit students, but
will also provide professionals with the necessary tools to improve and optimize the
welding process.
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