HOME - provizoriu - Revista HIDRAULICA | HIDRAULICA Magazine

CURRENT ISSUE – HIDRAULICA Magazine No. 1/2025

Braking Energy Recovery Hydraulic System for Heavy-Duty Machine Tools. Mathematical Modeling and Simulation
Author: Anca BUCUREȘTEANU

This paper examines the opportunity to recover the kinetic energy accumulated by the main kinematic chains of the heavy-duty machine-tools in downtime phase. The proposed unit can shorten the stopping time of the main spindle, with or without a blank, and would allow the recovery and storage of the accumulated kinetic energy in order to use it in … (read more)

Signal Processing Techniques and Mathematical Modeling for Analyzing and Diagnosing Cavitation in Centrifugal Pumps
Author: Ștefan ŢĂLU

Cavitation remains a critical issue in centrifugal pump operation, leading to performance degradation, structural damage, and increased maintenance costs. Effective cavitation detection and modeling are essential for improving pump reliability and efficiency. This review integrates two key aspects of cavitation research: signal-based fault detection methods and mathematical modeling approaches. First, we review various cavitation detection techniques based on vibration, acoustic emission, noise, and pressure pulsation signals. Each method’s advantages and limitations are discussed, focusing on … (read more)

Considerations regarding the Use of Infrared Thermography in the Maintenance of Hydraulic Drive Installations
Authors: Teodor Costinel POPESCU, Alina Iolanda POPESCU

Infrared thermography, as a non-contact investigation technique, has proven its usefulness in preventive maintenance and in monitoring mechanical, electrical systems or production processes. Engines, pumps, couplings, hydraulic installations, rotating equipment, servomechanisms, furnaces, tanks, but also other equipment can be found in all industrial activities. Examples of the use of infrared thermography are known only at the level of hydraulic components, not hydraulic drive installations / systems. For this reason, the authors present several points of view regarding the use of this technique on a specific case of … (read more)

Simulation aaaaaaaaaaaaaaaaaaaaaaaaaa Control Valve
Authors: Tiberiu AXINTE, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

The aaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaa aaaaaaaaa aaaaaaaaaaaa aaaaaaaaa aaaaaaaaaa aaaaaaaa aaaaaaaaaa aaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaa aaaaaaaa aaaaaaaa aaaaaaaaaaa aaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaa aaaaaaa aaaaaaaa aaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaa aaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaa … (read more)

Simulation aaaaaaaaaaaaaaaaaaaaaaaaaa Control Valve
Authors: Tiberiu AXINTE, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Simulation of Hydraulic Motor Controlled by the Control Valve
Authors: Tiberiu AXINTE, Mihăiță CAZACU, Gabriela CURCĂ, Lidia CALANCEA, Mihai DIACONU, Camelia PASCU

The paper presents an overview of the importance of installations with hydraulic motors. In this manuscript, we are studying two hydraulic circuits and one electro-hydraulic circuit, which contains 4/2-way hand-lever valves. Thus, the first hydraulic circuit contains the following devices: fixed displacement pump, three tanks, 4/2-way hand-lever valve, two throttle valves, pressure relief valve, and … (read more)

Implications of Dedicated Environmental Information Systems in the Firiza Valley Area (Baia Mare, Romania) Characterization to Establish the Dynamics of Pollutant Transfer from Soil to Crop Plants
Authors: Marcela HRENIUC (SĂLIȘCAN), Bogdan-Vasile CIORUȚA, Ioana-Elisabeta SABOU (CIORUȚA), Alexandru Leonard POP, Mirela-Ana COMAN

We start from the idea that environmental information systems (EISs) – developed under the aegis of environmental informatics (EI) – have been within the reach of specialists and practitioners for more than 3-4 decades, favoring the sustainable development of communities, by making and applying the best possible decisions. From the perspective of soil resource protection and sustainable land management, this paper proposes to analyze … (read more)

Hydrological and Land Use Changes in the Bajo Balsas River Basin: Impacts on Water Storage at El Infiernillo Dam
Authors: Eduardo JUAN-DIEGO, Maritza Liliana ARGANIS-JUÁREZ, Margarita PRECIADO-JIMÉNEZ, Alejandro MENDOZA-RESÉNDIZ, Rodrigo ROBLERO-HIDALGO

This paper analyzes trends in water storage at El Infiernillo Dam in Michoacán, Mexico, and its relationship with climate and land use factors. Using historical data from 1994 to 2024, the research identifies a significant decline in the dam’s storage volume, particularly after 2002, attributed to increased evaporation and water withdrawals for agricultural and urban use. Land use changes in the Bajo Balsas River basin, including a 17.25% increase in … (read more)

“My Soil Protection App” – A Mobile-Based Dedicated Environmental Information System – from a User Testing and Validation Perspective
Authors: Bogdan-Vasile CIORUȚA, Ioana-Elisabeta SABOU (CIORUȚA), Marcela HRENIUC (SĂLIȘCAN), Alexandru Leonard POP, Mirela-Ana COMAN

As part of the mobile application development and improvement process, evaluation and feedback along the way are essential elements for any software developer; they can provide him/her with information about both the value that the application has from the perspective of other users, as well as information that needs to be revised or removed from the interface and the functionalities that the application proposes. In this sense, for the mobile application “My Soil Protection App”, created in our regime, we proposed to carry out an analysis of … (read more)

Simulation aaaaaaaaaaaaaaaaaaaaaaaaaa Control Valve
Authors: Tiberiu AXINTE, aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Revista HIDRAULICA | HIDRAULICA Magazine | ISSN 2343–7707 ; ISSN-L 1453-7303