Wire Arc Additive Manufacturing (WAAM) is an arc-based additive manufacturing process used for the layer-wise fabrication of metallic components. The used process parameters significantly affect process stability, deposition quality, and surface integrity of the manufactured parts. Welding power source manufacturers allow some of the process parameters to be corrected, but they do not quantify these cor (…)
The evolution of water droplet erosion on copper with varying grain sizes altered by heat treatment was investigated. An ultrasonically driven pulsating water jet was employed as a droplet generator. The water jet treatment was performed at a frequency of 40 kHz using two levels of supply pressure of 20 and 30 MPa. The measurements of removed volume and achieved depth show a critical interplay between d (…)
In micro EDM drilling, particular attention should be made to characterize the hole not only from a macro and micro geometric point of view but also as regards the integrity of the internal surface of the hole. The analysis of the internal surface of micro EDM holes is the aim of this paper. Micro holes were executed on the interface line of two coupled titanium sheets in order to have free access to th (…)
Additive manufacturing has revolutionized production capabilities across industries, yet quality assurance and process optimization remain significant challenges due to complex, multi-parameter interactions. Explainable Artificial Intelligence (XAI) offers potential solutions by providing interpretable insights into manufacturing processes, though its systematic application remains fragmented. Neverthel (…)
Additive manufacturing (AM) quality control relies on empirical approaches due to complex process-property relationships. While machine learning (ML) offers promising solutions, most approaches treat parameters independently without leveraging thermomechanical principles governing the properties of the printed materials. This is essential for understanding the behaviour of fused deposition modelling (FD (…)
The paper investigates the influence of nozzle temperature (190 and 230 °C) and print speed (50, 100, 150, 200, 250 and 300 mm/s) on the tensile force of polylactic acid (PLA) and high-speed PLA (HS-PLA) test specimens fabricated via additive manufacturing method Fused Deposition Modelling (FDM). Results show that PLA test specimens printed at 230 °C exhibits tensile forces up to 2000 N, over three time (…)
This paper focuses on assessing the dimensional and geometric accuracy of cold-drawn seamless precision steel tubes manufactured under real mass-production conditions. The primary objective of the research was to determine the variability of key dimensional parameters (outer diameter (OD), inner diameter (ID) and wall thickness (WT)) and geometric parameters (concentricity and roundness) along the full (…)
Tangential laser micromachining with ultra-short pulses offers high precision and is increasingly used for forceless machining of hard materials, especially in medical, watchmaking, and microtool applications. However, existing machining strategies often fail to maintain effective cutting conditions across varying workpiece dimensions. This preliminary study introduces an adaptive path control (APC) app (…)
This paper provides a comprehensive analysis of the evolutionary development of artificial neural networks (ANNs) through the lens of three key generations: from simple perceptrons to modern spiking neural networks (SNNs) and prospective biophysical models. Particular attention is paid to a critical comparison of artificial systems with their biological prototypes, identifying the fundamental limitation (…)
The fusion welding of additively manufactured (AM) materials in the important issue for their reliable application within the structures, which demands the conduction of related research. The paper is focused on a testing of Metal Active Gas (MAG) welding of conventionally manufactured (CM) and AM stainless steel 316L (Selective Laser Melting - SLM). The main objective is the examination of the weldabil (…)
The paper describes an approach to the activation energy and diffusivity calculation concept for the formation of bimetallic structures, which is based on the interatomic potential idea. A comparative analysis of the computed values obtained with the proposed model and the real data for a range of metals has been carried out, which demonstrates and confirms the accuracy and validity of the model, which (…)
This study adopts a foresight approach to examine the transformations brought about by Artificial Intelligence (AI) and their social, cultural, and institutional implications in Iran. The primary aim is to address three key questions: the opportunities AI presents for enhancing quality of life and social development; the threats and harms arising from the unregulated expansion of this technology; and th (…)
In the high-pressure die casting machines, the locking force is a parameter that determines the size of the machine. For the safe operation of the machines, it is necessary that the die is locked perfectly, which ensures compliance with the dimensional tolerances of the cast and prevents metal from spraying out of the parting plane. The submitted contribution is devoted to the issue determining the adeq (…)
The article deals with the methodology of verification of the calibration ruler for the microscope. These calibration rulers are used for the calibration of measuring microscopes and are therefore always supplied without a calibration protocol. However, it is necessary to find a way to determine the measurement uncertainty when using a measuring microscope.
The article deals with the design of an educational robot consisting of three parallelogram mechanisms. Such a type of robot automatically ensures the parallelism of the end point position with the initial end point position. This is important, for example, when manipulating loose or liquid materials. A simulation model is solved and subsequently a hardware prototype is created for experimental work by (…)
This study investigates the crashworthiness of fiberglass filled crash box under quasi-static loading by varying filler height and central hole diameter. The crash box specimens consisted of 1.8 and 2.2 mm thick aluminum tubes with an outer diameter of 76 mm, filled with fiberglass. The fiberglass fillers were prepared in four height configurations: 30 mm, 60 mm, 90 mm, and 120 mm. To investigate the ef (…)
This article deals with the design, construction, and testing of a new system for measuring the stiffness of soft actuators. These actuators move similarly to living organisms using flexible materials and internal pressure. The study presents a comprehensive method that combines sensors, actuators, and control systems to measure the force developed when the actuator is bent or stretched. Much of the wor (…)
The study aims to describe the properties of heat-resistant coatings of tribological purpose based on meta-aramid and obtain mathematical models, that will provide simple usage of this data. These are results of experiments that show the dependencies of coefficient of friction and mass wear on two factors: load and filler content. All the experimental data is obtained for such filler materials: boron ni (…)
This paper presents a comprehensive kinematic analysis of a two-link SCARA-type manipulator, focusing on the trajectory planning of its end-effector along a circular path. Using the FANUC SR-3iA/U as a reference platform, both inverse and forward kinematics were analyzed, with MATLAB simulations performed to generate smooth motion profiles based on fifth-order polynomial interpolation. The results demon (…)
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