Nicolae Ungureanu

ORCID: 0000-0003-1320-6473
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Research Areas
  • Mechanical and Thermal Properties Analysis
  • Advanced machining processes and optimization
  • Engineering Technology and Methodologies
  • Manufacturing Process and Optimization
  • Tribology and Wear Analysis
  • Gear and Bearing Dynamics Analysis
  • Surface Treatment and Coatings
  • Metal Alloys Wear and Properties
  • Mechanical Engineering Research and Applications
  • Industrial Vision Systems and Defect Detection
  • Metallurgy and Material Forming
  • Brake Systems and Friction Analysis
  • Lubricants and Their Additives
  • Soil Mechanics and Vehicle Dynamics
  • Digital Transformation in Industry
  • Structural Analysis and Optimization
  • Surface Roughness and Optical Measurements
  • Orthopaedic implants and arthroplasty
  • Mineral Processing and Grinding
  • Drilling and Well Engineering
  • Engineering and Environmental Studies
  • Advanced Measurement and Metrology Techniques
  • Advancements in Materials Engineering
  • Operations Management Techniques
  • Advanced Measurement and Detection Methods

Technical University of Cluj-Napoca
2013-2025

University of Novi Sad
2018

University of Žilina
2018

Sumy State University
2018

This paper presents a model of approaching the managing innovation process in case small and medium-sized companies. The development by means is analysed from two perspectives, namely: perspective companies that apply innovations universities as suppliers technologies knowledge. Some aspects specific for management are given first part while second contains some referring to university technological transfer presented main types legal agreements transfer.

10.1016/j.proeng.2016.06.697 article EN Procedia Engineering 2016-01-01

Cutting inserts made of ceramic materials are used in rough machining processes Inconel 718. This article compares sintered carbide S205 with 6160 after finish turning 718 a hardness 45 HRC. The evaluation focused on insert wear, surface topography and changes cutting edge radius. results show differences the wear inserts. characterize formation buildup rake face, while tend to form flank face. Furthermore, more prone notch wear. Surface analysis revealed individual high peaks surfaces...

10.3390/app15084265 article EN cc-by Applied Sciences 2025-04-12

In the era of digitalization, prescriptive maintenance and equipment condition monitoring are essential for ensuring continuity operations in various industries. The proposed software solution provides an integrated maintaining equipment, facilitating collection, processing interpretation data related to their performance. Prioritization recommendations alerts within application is based on a set well-defined criteria that integrate both analysis physical sensor computer logs. This achieved...

10.3390/machines13050412 article EN cc-by Machines 2025-05-14

The aim of the study is tribological analysis crane drum brakes. A theoretical wear processes for brake lining was performed and coefficient friction under conditions determined experimentally simulating operating three types oriented towards determining lifetime lining. In experimental determination friction, following parameters were taken into account: contact pressure between shoe drum; initial speed humidity working environment; temperature drum-brake surfaces. After performing...

10.3390/ma15196549 article EN Materials 2022-09-21

The article presents the results of experimental investigations to determine effect active surface morphology grinding wheels with a zone-diversified structure on form and size chips generated during traverse internal cylindrical 100Cr6 steel. In process involving structure, chip formation phenomena differ in rough finish zones tool. order expand one’s knowledge this phenomena, microtopography measurements wheel were made, as well scanning electron microscopic observations these areas after...

10.1177/0954405416661004 article EN Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture 2016-08-05

This paper presents a part of the study referring to exploring Energy Recovery from Municipal Solid Waste in Maramures County. In order analyze possibility energetic recovery municipal solid waste (MSW), data management system MSW county were cumulated and processed first stage estimate quantity its composition, which might be recovered energetically. next stage, samples collected landfills, submitted specific processing analyses. The experimental end energy potential was found. will help...

10.3390/pr9030514 article EN Processes 2021-03-12

CAM systems are most widespread way to create cnc programs. Possibility of optimization, simulation machining, shorter lead time, and flexibility biggest benefits. Some used GibbsCam, PowerMill, AlphaCam, Surfcam, Edgecam. Next article shows making NC program in Edgecam was chosen because is user friendly simple programs can be created without deeper knowledge system. Therefore very suitable for learning process.

10.1109/sami.2015.7061885 article EN 2015-01-01

Abstract This paper presents the actual solution used by Secoma Company and part of research regarding a personal concerning implementation digital devices in pressing strength’s control pneumatic rotating drill, which is included structure drilling installation. The monostable fluidic element, was proposed to be used, special device, with an incompressible fluid as supply jet compressible command jet. superior advantages given existing variants automation solutions electronic components....

10.2478/amsc-2013-0081 article EN Archives of Mining Sciences 2013-12-01

The friction coefficient in the brake linkages has an important influence on braking efficiency and safety of machines. paper presents a method for study couple shoe-drum mining hoist. In this context, it is interesting to define coefficient, not just according materials contact, but entire ensemble tribological factors couple.

10.1088/1757-899x/174/1/012016 article EN IOP Conference Series Materials Science and Engineering 2017-02-01

Preliminary communication

10.17559/tv-20140214120059 article EN cc-by Tehnicki vjesnik - Technical Gazette 2017-04-01

Determining the metrological parameters of a newly developed measurement system often requires conducting proper test procedures, using typical commercial or specifically dedicated standards, alongside samples. This paper presents various stages in preparation and ring-type samples prepared for testing hybrid systems non-contact simultaneous assessment surface texture dimension. Machining was carried out small bench-type SK-1 lathe, whereas finishing process wide range abrasive sheets (grain...

10.1504/ijptech.2016.078177 article EN International Journal of Precision Technology 2016-01-01

Abstract Tribological processes and failure of plain bearings significantly affect the availability, adaptability, reliability productivity modern technology, maintenance costs, energy costs production. The research tribological should indicate possible causes necessary measures to be applied in order reduce bearings. In this paper, were analyzed. Having mind most important failure, a proposal for monitoring condition is given.

10.1088/1757-899x/568/1/012072 article EN IOP Conference Series Materials Science and Engineering 2019-08-01

Abstract Admitting as known the instruments that lends itself to highlighting causes - consequences relationships in an industrial plant, purpose of this research is, on one hand, integrate these safety diagnostic procedures and, other use “consequences” forecast future failures likely occur within technical system. In context, paper aims study systemic hazard models develop structural, functional and behavioural models, describing a complex system

10.1515/aucts-2015-0020 article EN ACTA Universitatis Cibiniensis 2015-07-01

The improvement of the gear cutting process by hob milling is also significant for producers gears as well tools. Due to complexity process, high values gears, and in particular tool, research bases optimizing requires financial resources efforts researchers. In modern production there a continuous demand increasing economy. improvements equipment materials elements tools are necessary. this paper an analysis tool life coated cylindrical given. experimental results have shown that with...

10.1051/matecconf/201818403011 article EN cc-by MATEC Web of Conferences 2018-01-01

All state-of-the-art Tool condition Monitoring systems (TCM), especially those that use vibration sensors, in the tool wear recognition task, heavily depend on choice of descriptors contain information concerning state, which are extracted from particular sensor signals.All other postprocessing techniques do not manage to increase precision if discriminative enough.In this work, we propose toll monitoring strategy, relies novel texture based descriptors.We consider module Short Term Discrete...

10.24867/ijiem-2018-3-167 article EN cc-by International Journal of Industrial Engineering and Management 2018-09-01
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