The paper presents a CNC component manufacturing process using the WAAM process. The study depicts all the execution steps of a component from the CAD drawing, deposition procedure (technological ...parameters, times, layers, etc.), examination, and economic calculation. The manufacturing of this component using WAAM is more advantageous given the fact that the execution time and delivery are significantly shorter, mainly when a single piece is required and also when discussing the raw material used, usually expensive titanium alloys. For example, for Ti-6AI-V used in the aircraft industry, for which the material price is about 90 Euro/kg, the costs for obtaining a given component using the WAAM process will be about 497 Euro/piece compared to 1657 Euro/piece when using another manufacturing process, as it is shown in this paper. In conclusion, additive manufacturing can easily become a feasible solution for several industrial applications when it replaces a classic manufacturing process of a single component or replacement products, even simple-shaped.
This paper presents experimental investigations on the solid-state joint of 3 mm sheets of AlMg3 alloy with X2CrNiMo17-12-2 stainless steel. The study presents a dissimilar joint that was made in a ...solid state using a modified milling cutter. The study highlights the possibility of using this type of joint in a naval field. The paper presents all the steps of the joining process, from the technological parameters to the examination and numerical validation of the obtained specimens. A numerical model was defined in Abaqus, considering a Static analysis, and the results demonstrated a good similarity with a small discrepancy observed in the elastic range of the specimen behaviour. In the conclusions, this study will provide some recommendations for the optimisation of this joint and proposals for future studies; the idea for this study started from the dissimilar joints used in the naval field. The article also briefly presents some dissimilar joints made on the same milling machine and in the same laboratory.
Virtual Reality (VR) and Augmented Reality (AR) are the new computer technologies to create a simulated environment in the field of automotive. Virtual Reality can create for its users an experience ...that simulates the real environment in the field of automotive and creates a 3D image. Instead of having a screen in front of them, users interact with 3D world. By using VR and AR many senses can be stimulated, such as vision, hearing, touch, even smell and noise, the computer being transformed into a gatekeeper to this 3D artificial world.
The paper will present a state of art on the needs of the Virtual Reality and Augmented Reality devices used in the automotive field and two case studies related to some applications of Virtual Reality in the automotive field in Romania.
Plastics have a wide use in almost all economic areas, their appearance and use has emerged as a necessity to reduce the consumption of natural products and thus decrease the impact on the ...environment. In the automotive field, a wide range of plastic products are used due to the additional advantage of weight saving and the production rate of large parts, but which in the assembly process requires joint operations with each other respectively with other objects. An important factor in the studied theme was the challenge of combining 2 different PPMA and ABS materials, taking into account the advantages of each one, namely the PMMA polymer plastic material ensuring the transparency property and the ABS polymer plastic material ensuring the strength and stability of the jointed part. The study presents a part used in the automotive industry for which the process of combining the component materials was detailed
. In a few decades, titanium has gone from being used almost exclusively in top-secret aerospace projects to being used in the construction of custom car parts. Thanks to its incredibly high ...strength-to-weight ratio and excellent corrosion resistance, titanium will be used even more extensively in the future. There are various ways of joining titanium, one of the most used being welding. Titanium generally has good weldability, but welding it poses problems in terms of the danger of atmospheric contamination of the joint, as titanium, along with zirconium, beryllium, hafnium, and several other metals, has a high affinity for atmospheric gases. In this paper, the characteristics of titanium and its alloys will be presented, as well as the main processes for joining them by welding and a brief review of some examples.
People is changing. Technology is changing. Economy is changing. Society is changing. Education is changig. In the Industry 4.0 the digitalization and VR, AR, CPS, IoT, ICT, AI assures higher ...precisions, higher productivity, mass customisation, less waste, and less pollution and contributes to the society change. All the applied and ready to apply technologies receive digital component, as result of the rapid development of information and communication technology. The main objective of the paper is to see in specialized literature what are the skills required by Industry 4.0 (I.4.0), what are the means associated with the concept of Education 4.0 (E.4.0) to obtain them, and to what extent education systems are adapting to these new requirements, which are constantly changing. In addition, it is presented the current situation regarding education perspective and some directions of action, and at the end, a number of conclusions focused on what we could do to all benefit from technological progress in industry as well as in education.
PROFESSIONAL EXPOSURE TO NOISE IN THE AUTOMOTIVE INDUSTRY Rinjea Costache, Constanta; Chivu, Oana-Roxana; Țăpîrdea, Alin Ion ...
Journal of Research and Innovation for Sustainable Society,
12/2020, Letnik:
2, Številka:
2
Journal Article
Recenzirano
Odprti dostop
The automotive industry is one of the most developed industries in the world and is the engine of the economy of many states. This paper aims to present the values of the noise level to which a ...worker is exposed, in a factory in the automotive industry. The purpose of these measurements is to evaluate the impact of the noise produced by the activities that take place on the factory site and to verify the noise level if it falls within the limits in force at the moment. To perform the measurements, 6 areas of the factory were identified; 3 indoor areas: production area, office area and metrology laboratory area and 3 outdoor areas: smoking area, truck loading area and employee entry area
Most of the historical steel bridges are still original and have presented a number of defects (strong corrosion, fatigue material). These fractures may be conceptually explained by the presence of ...irregularities along the elements, the rusted surface that may act as crack initiators and precipitate crack propagation throughout the section.
The article will explore a potential additive manufacturing approach for combining two distinct thermoplastics, ABS and PMMA. The obtained piece can be produced up of two parts: the lower half is ...made of ABS, while the upper part is based on PMMA. Given that the assembly is meant to be used on an automobile's exterior, it must be resilient to air and water. Both types of thermopolymers—ABS and PMMA—must be used in a range of lighting applications, including automotive lighting, to lower prices and improve lamp performance. Although PMMA and ABS are different materials, they are compatible and are frequently bonded together.
The problem of corrosion for old steel bridges in operation is often solved by direct replacement of elements or structure. Only a few studies have been done to determine the efforts influenced by ...corrosion in those elements. In general, it is considered that a corroded element has exceeded the bearing capacity and should be replaced, but if the corroded element is secondary it could be treated and kept. A factor in the rehabilitation of an old steel bridge in operation is the aspect of structure. If the structure is corroded, rehabilitation decision is taken is easier. Lamellar tearing describes the cracking that occurs beneath the weld and can be characterized as a brittle failure of steel, in the direction perpendicular to the plane of rolling. The paper presents a comprehensive study on lamellar tearing and summarizes some conclusions about the prevention of them. The conclusions will be exemplified in the case of a railway bridge, with a main truss girder. The paper presents also some observations regarding the stress analysis in fillet welds, resulting from the engineering practice.
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