CURRENT ISSUE – HIDRAULICA Magazine No. 4/2024
New Developments in Intelligent Diagnostic Methods for Hydraulic Piston Pumps Faults
Author: Ștefan ŢĂLU
As industries increasingly embrace digital transformation, the need for effective fault diagnosis in hydraulic piston pumps (HPPs) has grown in importance. HPPs are critical components across various sectors, including aerospace and manufacturing, where their reliability directly impacts system performance. The reliability of these pumps affects not only operational productivity but also the safety of the entire system. As a result, the development of diagnostic methods for identifying and addressing faults in HPPs has become a crucial area of research. This article explores the latest advancements in intelligent diagnostic techniques for fault detection in HPPs, highlighting … (read more)
Optimizing the Flow through the Hydraulic Installation of a Port Crane
Authors: Mariana PANAITESCU, Fănel-Viorel PANAITESCU, Ionuț VOICU
The lifting installations with cranes have a much higher productivity than the big ones and come into operation without preliminary preparations, but compared to the big ones, they are constructively more complex and more expensive. They can have manual (very rare), electric (currently the most widespread) and electrohydraulic (with greater possibilities of adjusting the working speeds) actuation. The primary condition and the basis of the economic growth of the port activity is the provision of appropriate performances and in particular the activities of operating ships and handling goods, which constitute the main function of a port. As a result, the optimization of the flows through … (read more)
Fluid Contamination Aspects Due to Hydraulic System Operation
Author: Fănel Dorel ȘCHEAUA
Fluid contamination is a significant concern in hydraulic and fluid systems, as contaminants in hydraulic, lubrication, or process fluids lead to equipment wear, corrosion and even catastrophic failures in sensitive equipment. Effective contamination control is essential for maintaining system reliability, optimizing performance and extending the life of both fluids and equipment. With advances in sensing, modelling and filtration technologies, industries are better equipped to manage fluid contamination and ensure system resilience. This paper presents the fluid contamination general aspects, main sources, the principal contaminants types, represented by … (read more)
Mechatronic System for Monitoring a Warehouse of Hydraulic and Pneumatic Equipment
Authors: Iulian-Alexandru VLĂSCEANU, Mihai AVRAM, Victor CONSTANTIN
The paper presents an original structure for an autonomous system designed to monitor objectives of strategic importance. The system was physically developed, then validated and optimized. In this work, the authors propose a methodology for … (read more)
Air Quality Monitoring in the Environmental Processes
Authors: Marius-Valentin DUMITRESCU, Fănel-Viorel PANAITESCU, Mariana PANAITESCU, Diana-Mariana COCÂRȚA
Classic air quality monitoring technology has reached its technological and cost limits. As spatial monitoring improves, pollution sources, dispersion patterns and health effects can be better addressed while reducing reliance on predictive models. In this context, the work presents a sustainable process of obtaining recycled plastic filament and … (read more)
A Flood Early Warning System Design and Implementation for the Rio Grande de Morelia Basin, Mexico
Authors: Rodrigo ROBLERO-HIDALGO, Hector BALLINAS-GONZALEZ, Margarita PRECIADO-JIMÉNEZ, Maritza Liliana ARGANIS-JUÁREZ
This paper addresses flood risk management and the need for preventive measures to minimize flood impacts in the Rio Grande de Morelia basin, Mexico. Due to rapid population growth and limited urban planning, the city of Morelia faces recurring flood threats that cause significant damage to communities, infrastructure, and the environment. This research proposes the development of a Flood Early Warning System (FEWS) that integrates … (read more)
3/2-Way Pneumatic Solenoid Valves: An Overview
Authors: Tiberiu AXINTE, Mihăiță CAZACU, Gabriela CURCĂ, Lidia CALANCEA, Mihai DIACONU, Alexandru SAVASTRE
The paper presents importance of the 3/2-way solenoid valve in the electro-pneumatic circuit. Besides, in this article we present three electro-pneumatic circuits endowed with 3/2-way solenoid valve. Thus, the first electro-pneumatic circuit is composed of the following devices: compressed air supply, 3/2-way solenoid valve, throttle valve, single acting cylinder (SAC 1) and … (read more)
Experimental Evaluation of a Digital Hydraulic Pumping System
Authors: Bogdan Alexandru TUDOR-ROTILĂ, Radu-Iulian RĂDOI, Ștefan-Mihai ȘEFU, Robert BLEJAN
The field of digital hydraulics is in full expansion and a lot of research teams contribute to its development, in order to be competitive with classic hydraulic systems, and reduce the energy loses from the hydraulic systems. This article presents the experimental results for a Digital Hydraulic Pumping System, with 4 pumps with fix displacement connected in parallel and the capacities of each pump is in the binary progression. The experimental results show that such a system can achieve 15 discrete values of flow, without … (read more)
Numerical Aspects of Fluid Peristaltic Circulation Model
Author: Fănel Dorel ȘCHEAUA
The peristaltic model of flow describes the movement of fluids through channels or tubes, highlighting the natural process of peristalsis observed in biological systems, such as the gastrointestinal tract, blood vessels and lymphatic systems. Peristalsis is characterized by rhythmic, wave-like contractions of muscle layers that propel fluids forward. In the human body, this mechanism is crucial for the transport of various substances, of interest being the mechanisms by which this process occurs. In this paper, a description of the fluid movement typology with a mathematical model and a numerical analysis are presented in order to … (read more)
Dispersion Curves of Water Quality Parameters in the Fuerte River and Huites Dam, Mexico: Assessment of Aquatic Fauna Survival
Authors: Maritza ARGANIS, Margarita PRECIADO, Cecilia GONZALEZ, Helena RIVAS-LÓPEZ
The water quality parameters profile of a river and a reservoir in the Fuerte River, Sinaloa, Mexico, was analyzed to identify the survival conditions of the Tilapia fish species inhabiting this area. Dissolved Oxygen (DO) was identified as the most critical parameter affecting their survival. Field data reported in publicly accessible databases was used; genetic programming was applied to approximate the model of the average DO concentration profile against the length, resulting in … (read more)
