Št. zadetkov: 18
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Oznake:
biomehanika;vozila;potniki;trk;prometne nesreče;mišična aktivnost;biomechanics;vehicle ocupant;impact;in vivo;muscle activity;
The aim of the study was to evaluate a novel approach to measuring neck muscle load and activity in vehicle collision conditions. A series of sled tests were performed on 10 healthy volunteers at three severity levels to simulate low-severity frontal impacts. Electrical activity-electromyography (EM ...
Leto:
2017
Vir:
Fakulteta za strojništvo (UL FS)
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Oznake:
hydraulic system;oil cleanliness;gear pumps;directional 4/3 valves;orbital motors;wear;internal leakage;volumetric efficiency;
Contamination in hydraulic systems is the cause of 70% of failures. This study highlights the performance degradation caused by solid particle contamination of hydraulic components: hydraulic gear pump, 4/3 valve, and orbital motor. Experimental durability tests of components with wear particles and ...
Leto:
2023
Vir:
Fakulteta za strojništvo (UL FS)
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Oznake:
vodna hidravlika;trajnostni preizkusi;tribološki preizkusi;notranje puščanje;obraba;proporcionalni ventil;3D-tisk kovin;
Čeprav se voda redko uporablja v pogonsko-krmilni hidravliki (PKH), pa napredne tehnologije odpirajo nove možnosti za širšo uporabo vodne hidravlike (vodne PKH). 3D-tisk kovinskih komponent omogoča izdelavo kompleksnih notranjih geometrij, kakršne s tradicionalnimi postopki niso dosegljive. Z njim l ...
Leto:
2024
Vir:
Fakulteta za strojništvo (UL FS)
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Oznake:
zobniške črpalke;čistoča olja;obrabni delci;testni prah;volumetrični izkoristek;
Hidravlični sistemi so vse bolj prisotni v vseh segmentih naših proizvodnih verig, kot so kmetijstvo, gradbeništvo, transport in razna industrijska področja. Ključni sestavni del vsakega hidravličnega sistema so praviloma črpalke. Z novo razvito napravo za testiranje zobniških črpalk smo izvajali tr ...
Leto:
2023
Vir:
Fakulteta za strojništvo (UL FS)
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Oznake:
hidravlika;čistoča olja;preizkuševališča;potni ventili;trajnostni testi;testni prah;obraba drsnih površin;
Hidravlični sistemi so zelo pogosti v industriji in ostalih tehničnih področjih. Za krmiljenje se najpogosteje uporabljajo drsniški potni ventili, ki pa na krmilnih batih nimajo tesnil. To povzroča notranje puščanje. Stabilnost puščanja je zelo odvisna od čistoče hidravlične tekočine. Raziskava obra ...
Leto:
2023
Vir:
Fakulteta za strojništvo (UL FS)
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Oznake:
human cervical spine;ligament;tension test;age-related changes;biomechanics;mechanobiology;osteoarthritis;
The cervical spine ligaments, including the anterior longitudinal ligament (ALL) and posterior longitudinal ligament (PLL), play a key role in maintaining spinal stability by limiting excessive movements. This study investigates how ageing affects the mechanical properties of these ligaments. We ana ...
Leto:
2025
Vir:
Fakulteta za strojništvo (UL FS)
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Oznake:
spine biomechanics;cervical spine;ligament;injury;subfailure;
Background: Cervical spine ligaments that protect the spinal cord and stabilize the spine are frequently injured in motor vehicle collisions and other traumatic situations. These injuries are usually incomplete, and often difficult to notice. The focus of the presented study is placed on analysis of ...
Leto:
2020
Vir:
Fakulteta za strojništvo (UL FS)
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Oznake:
patellar ligament;elderly population;material properties;stress-strain;toe region;
The aim of the presented study was to estimate the material properties of human patellar ligaments from the elderly population by means of tensile tests. The experimental part was conducted on a custom tensile-testing device, with a built-in enclosure to simulate in-vivo conditions, using 25 (15 fem ...
Leto:
2020
Vir:
Fakulteta za strojništvo (UL FS)
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Oznake:
hydraulics;polymer composites;green lubricants;glycerol;water;
The study analysed the tribological performance of five different polymer composites: polyetheretherketone reinforced with 30% carbon fibres—PEEK CF30, polyetheretherketone reinforced with 10% carbon fibres, 10% graphite and 10% polytetrafluoroethylene—PEEK MOD, polytetrafluoroethylene reinforced wi ...
Leto:
2023
Vir:
Fakulteta za strojništvo (UL FS)
Izvirni znanstveni članek
Oznake:
hydraulic gear pumps;wear particles;medium test dust;level of cleanliness;wear coefficient;volume loss;leakage flow;
In this study, long-term tests were conducted to evaluate the effects of wear particles and test dust on the degradation of external gear pump performance. The results of the hydraulic measurement showed that the hydraulic pump tested with wear particles can operate for 624 h with a cleanliness leve ...
Leto:
2023
Vir:
Fakulteta za strojništvo (UL FS)