The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science

Studies and Research on the Replacement of Pipes Made of Steel P355N, Intended for Domestic Water

Beatrice Daniela TUDOR — 2024-09-15

The paper presents an analysis regarding the need to replace pipes made of P355N steel, intended for domestic water. This replacement presents a necessity, due to the degradation and exceeding the lifespan of the domestic water network in the city of Galati. The microscopic analysis of the samples from steel pipe, shows an advanced degree of degradation of the steel pipes. The pipes will be replaced with polypropylene pipes, which have certain advantages in terms of corrosion resistance and in terms of ease of intervention in case of damage in the water network.

Prediction of Deformation of Hexagonal Honeycomb Blast Structure Under Explosive Loading Using Deep Learning

Mihaela MARIN — 2024-09-15

Honeycomb composites are widely used in blast structure under explosive loading because of mechanical properties. The simulation of high-pressure explosion is time consuming in order to simulate an important number of scenarios. New deep learning neural models might approximate results with low computational resources outputting the result very fast. The purpose of this study is to propose using deep learning model using a relative low amount of training fata to approximate deformation in honeycomb structures subjected to a blast load. This study employed variation of hexagonal honeycomb dimensions to determine the deformation using deep learning model.

An Intelligent System for Temperature Body Monitoring Using Arduino Platform

Mihaela MARIN — 2024-09-15

An accurate measurement of the body temperature is a critical component in monitoring the human health, with applications ranging from clinical diagnostics to wearable health monitoring systems. Using the Arduino platform for body temperature monitoring provides an affordable, customizable and efficient solution for a wide range of applications, from personal care to patient monitoring in hospitals, this type of device can significantly contribute to improving health and safety. The MLX90614 sensor is an innovative and efficient solution for temperature measurement in the medical engineering field. With its outstanding accuracy and adaptability in measuring body temperature and medical devices, this device
asserts itself as an indispensable tool in monitoring and managing the health of patients and medical devices in a variety of clinical and treatment settings.

Experimental Research on the Influence of Lens Cleaning Products, on Their Hardness

Beatrice Daniela TUDOR — 2024-09-15

The paper presents a study on the influence of optical lens cleaning products for vision correction on their hardness. The lenses under study were previously cleaned repeatedly with different cleaning products, namely, special eyeglass wipes and liquid detergent. The research was carried out on a group of lenses with and without protection, of different thicknesses and diopters.

Design and Manufacturing of a Custom Guitar Amplifier: Optimizing Materials for Acoustic Performance and Durability

Andrada Elena KUBASZKY — 2024-09-15

The project sought to design a guitar amplifier that would easily integrate into the decor of an apartment, imitating a piece of furniture. The design aims to create an aesthetic appearance that fits harmoniously in different types of homes, eliminating the need to bend down to adjust volume, tone, etc. The amplifier was built from a wooden case, with an accessory storage system in a lower drawer, and the functionality was achieved by integrating an Arduino board and a PCB circuit to implement the audio effects. The study details the stages of designing the amplifier prototype, including making the printed circuit board and processing the audio signal in four distinct stages: analogue signal amplification, digital
processing by Arduino, signal output stage, and power supply. The project also includes the careful design of the amplifier components, using quality materials such as spruce panel to ensure superior acoustics. The result demonstrates the complexity and innovation in the field of musical equipment, combining aesthetic with technical aspects.

Advanced Modeling and 3D Printing Techniques for Game and CGI Characters

Ștefan-Andrei LAZĂR — 2024-09-15

This article explores the methods of designing 3D elements used in video games and CGI, highlighting the impact of these techniques on the perception and experience of digital art. 3D models are fundamental to create immersive virtual worlds, and the 3D modeling process extends from conception to execution, combining engineering principles with industrial design. Advanced threedimensional modeling software such as Blender or Adobe Substance 3D Painter are built to create realistic models, while additive manufacturing with SLA technology allows rapid prototype development of game characters. The article also discusses the interoperability between certain three–dimensional modeling platforms on the current market and the impact of new technologies such as the so-called digital twins or the metaverse, on the future of three-dimensional graphics and threedimensional modeling of game characters. Through these technological advances, 3D modeling is redefining the boundaries of design, offering limitless opportunities for innovation in the gaming industry.

A Comparative Study Regarding the Performance of Corpuls 3 and Zoll Defibrillators

Mihaela MARIN — 2024-09-15

The purpose of this paper is to provide a detailed and accessible overview of the Corpuls 3 and Zoll defibrillators, highlighting their features, functionalities and advantages in the monitoring and treatment of patients in emergency and intensive care settings. The comparison was based on seven main criteria: modularity, design, CPR capacity, performance, vital parameters monitoring, monitoring screens and maintenance costs.

The Recovery of Vegetal Waste in the form of Home-Composting

Anca ȘERBAN — 2024-09-15

Composting the vegetable waste is an ecological alternative to their treatment by incineration or storage on landfills. The recovery of vegetable waste for obtaining compost is a beneficial method both by keeping a clean environment and enriching the soil. The vegetable waste decomposes and leave its intake nutrient in the soil for plants and other crops growth. The paper includes the chemical analysis and testing results of the compost obtained with garden vegetable waste (dried leaves, branches, bark, stems, flowers and herbs).