Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Karaçalı, Ö." wg kryterium: Autor

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-11 z 11
    Tytuł:
    Explicit Analysis of Cyclic Fatigue Behavior of Poplar Wood Pallet by Computational Engineering - Von Mises Yield, Goodmen and N-S Diagram Approach
    Autorzy:
    Karaçali, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/1033516.pdf
    Data publikacji:
    2017-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.10.KN
    83.80.MC
    81.70.BT
    Opis:
    Wood pallets are important carrying tools, defined in packaging engineering, for fragile or any kind of heavy goods. Wood pallets are exposed to flexural forces resulting in fracture and fatigue during transportation. In this research, the fracture and fatigue behavior of wood pallet system under loading was investigated, taking into account nail and pallet material behavior, using strain-stress distribution by computational finite element analysis. Static and dynamic numerical analysis was performed on the 3D model of poplar wood pallet using ANSYS computational system. To validate the data gathered from Von Mises yield, Goodman and N-S fatigue diagrams were established to predict fatigue life. The finite element models built in this research may assist the design engineers and manufacturers in evaluation of new design strategies of poplar wood pallets.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 3; 457-459
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fatigue Analysis of Ti-55 Alloy Material for Multifunctional Surgical Instruments in Medical Engineering
    Autorzy:
    Karaçalı, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/1192274.pdf
    Data publikacji:
    2015-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.40.Np
    81.05.Bx
    87.10.Kn
    Opis:
    A new approach is proposed for fatigue prediction in medical engineering of multifunctional microforceps-scissors (MFS), transconjunctival sutureless vitroretinal metal surgical instrument that removes, grasp, chops tissues and inserts new in a cell. Cyclic loads can result in the fatigue failure of MFS at stress levels below the yielding stress of material. Hence, research of the material and mechanical behavior of a MFS structure under a cyclic load is required. The numerical modeling of a cyclic load fatigue test was performed for a biocompatible MFS, by using finite element analysis (FEA). To verify the data gathered from von Mises' yield condition, Haigh diagram was developed to predict fatigue life. Fatigue behavior of the MFS was analyzed in ANSYS LS-DYNA under operation load conditions in vitrectomy. This research analyzes the application of forces to the examined MFS, resulting in different movements, which cause fatigue during surgery. The numerical analysis consisted in solving the strains and stresses distribution in the operating part of the MFS, made of Ti-55 alloy (Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd) medical material. The maximum values of strain and stress were calculated for the Ti-55 alloy, using values of elasticity modulus of 119 GPa, and Poisson's ratio of 0.32. The outcomes of the fatigue analysis from this research will be beneficial for micro component manufacturers in medical engineering and for clinic surgeons.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 4; 1199-1201
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Study of the Dynamic Anterior Cervical Plate Implant by Computer Aided Virtual Engineering Method
    Autorzy:
    Karaçali, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031956.pdf
    Data publikacji:
    2017-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.10.Kn
    81.70.Bt
    87.15.La
    Opis:
    The convenience of dynamic anterior cervical PMMA biomaterial placement of spinal implants is considered by finite element modeling. The maximum fatigue behavior was also studied in surface coated Ti-5Al-2.55n spinal screw-rods. Anterior cervical biomaterial plates reduce the hazard for spinal cord injury and provide outstanding fixation for the anterior column, to stop the relocation and slackening of screws-rods by a cross-split screw crown that may be fastened into the biomaterial plate. This article reports about the hollow Ti-5Al-2.55n screw and cervical biomaterial PMMA plate system. The flexion movement of the spine implant was modeled to control the stresses and strains of the bone and screw interfaces under the external forces, as well as motion of the vertebrae by finite element modeling. This computational engineering analysis is aimed to support patients suffering anterior cervical arthrodesis after degenerative disease or trauma. The data from this research may provide an essential base to estimate the stabilization quality. A model for the biomaterial between C4 and C6 segments of vertebrae of cervical spine was obtained. Study of the cervical biomaterial implant provides instantaneous secure fixation virtual experiment with minimal complications, before the real implant surgery, using computer aided virtual engineering.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 3; 584-587
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Parametric and Structural Analysis of Dynamic Anterior Cervical Biomaterial Plate Implant by Computer Aided Virtual Engineering
    Autorzy:
    Karaçali, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032042.pdf
    Data publikacji:
    2017-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.10.Kn
    81.70.Bt
    87.15.La
    Opis:
    The main objective of this study was to examine the convenience of an accurate model of placement of dynamic anterior cervical plate, made of poly (methl-methacrylate) biomaterial, for testing spinal implants, and to determine the maximum fatigue values of differently surfaced Ti-5Al-2.55n spinal screw-rods, by finite element modeling. Anterior cervical biomaterial plates reduce the hazard for spinal cord injury and provide outstanding fixation for the anterior column to stop the relocation and slackening of screws-rods, using a cross-split screw crown that may be fastened into the biomaterial plate. This article reports about the hollow Ti-5Al-2.55n screw and cervical biomaterial plate system. The flexion movement of the spine implant was modeled, using finite elements method, to control the stresses and strains of the bone and screw interfaces to external forces, as well as motion of the vertebras. This computational engineering analysis was aimed to support patients suffering anterior cervical arthrodesis after a degenerative disease or trauma. The obtained data from this research may provide an essential base to estimate the stabilization quality and mechanical properties of biomaterial selection. Model of the region between C4 and C6 segments of vertebrae of cervical spine was produced to correct the stabilization of implant with non-linear material properties. Study of the cervical biomaterial implant has provided instantaneous virtual experiment of secure fixation with minimal complications before a real implant surgery, using computer aided virtual engineering.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 3; 588-591
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A New Perspective on Cyclic Loading Behavior Analysis of ATSP-Adjustable Telescopic Steel Prop S235GT Material Used in Structural Engineering
    Autorzy:
    Karaçalı, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/1186479.pdf
    Data publikacji:
    2016-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.70.-q
    81.70.Bt
    87.10.Kn
    Opis:
    In the fatigue life assessment of adjustable telescopic steel prop joints subjected to cyclic loading is critical for determining the number of cycles before fatigue failure of 235GT steel materials. The research aims in this reported work were to develop a computational material model and 3D finite-element analysis model to accurately predict the static and dynamic cyclic load-deformation characteristics of 235GT steel and adjustable telescopic steel prop components. Critical values for stress components, responsible for distinctive fatigue failure of the adjustable telescopic steel prop were obtained and the fatigue limits were illustrated in the Smith diagram. To achieve these, finite element analysis were employed to calculate compressive stresses and equivalent Von Mises stresses as well as the analysis by the strength of materials experimental procedure in laboratory conditions. Hence, through appropriate computer software, the fatigue strength of adjustable telescopic steel prop was automatically determined and expressed in the form of the Smith diagram. The results obtained by the finite-element analysis and calculations are entirely similar to that of strength of materials procedure. This research helps improving site safety to understand the current working load limit basis for the material design of adjustable telescopic steel prop structures and make this design risk-consistent to prevent fatal injuries in the building construction industry.
    Źródło:
    Acta Physica Polonica A; 2016, 129, 4; 436-438
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Research on Nitinol Alloy Material Fatigue Behavior Analysis of Cardiovascular Stent in Medical Engineering
    Autorzy:
    Karaçalı, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/1194117.pdf
    Data publikacji:
    2015-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.40.Np
    81.70.Bt
    81.05.Bx
    87.10.Kn
    Opis:
    Biocompatible cardiovascular stents are small cylindrical support structures introduced into the stenosed arteries to reopen the lumen and to restore blood flow in treating heart disease, which have revolutionized interventional cardiology. Cardiovascular stent designers are confronted with two basic requirements, such as an "infinite" life and the "thinnest" wires. Pulsatile pressure, repetitive mechanical forces, within the coronary artery may result in stent fatigue and fracture after stent implantation, particularly in patients with complex coronary disease. This research describes the simulation analysis of cardiovascular stents, to provide designers with estimates of their in vivo structural behavior and fatigue properties. Stent material failure or device fatigue remains major concern for stent manufactures and researchers. The objective of this research was to simulate the mechanical behavior of the stent using finite element method. A finite element analysis (FEA) of cardiovascular stent under fatigue cyclic loading conditions is presented. Commercial software was employed to study the fatigue performance of nitinol alloy materials in new stent systems. The effects of deployment, and static cyclic pressure loading on cardiovascular stent fatigue life were simulated and analyzed for nitinol alloy material. The investigation results displayed a significant correlation between material combinations, stent loading, and fatigue behavior.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 4; 1167-1169
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Research on Structured Analysis of Biomaterial of Dental Implant in Computer Aided Biomechanical Engineering Modelling
    Autorzy:
    Karaçalı, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/1181969.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    83.50.-v
    87.85.gp
    02.70.Dh
    Opis:
    The research explained in this paper is about the mechanical principle applications on regulated form and function, forces, motion of teeth and dental implant - influencing the implant length and bone quality - in biomechanics engineering modeling in dentistry. The non-linear finite element method was employed as an advanced computer technique of structural stress analysis tool for biomechanics modeling using mechanical, mathematical, and biological definitions and concepts. A finite element model of dental implant with accurate geometry and material properties was developed to make realistic investigations on the implant biomaterial properties and mechanical behavior of new dental implant. The finite element models with non-linear contact elements were used to simulate an interface fixation within the implant system and the sliding function of the non-rigid connector. This research showed that implant design influences force transmission characteristics in peri-implant bone and mechanical signals affect bone tissue differentiation. Hence, it is important to control biomechanical loads on dental implants to maintain osseointegration and to promote early bone-implant interface healing. The results of this analysis are helpful for implant biomaterial selection and design for clinical interest.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 186-188
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Material Fatigue Research for Zirconia Ceramic Dental Implant: a Comparative Laboratory and Simulation Study in Dentistry
    Autorzy:
    Karaçalı, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/1401326.pdf
    Data publikacji:
    2015-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.40.Np
    87.10.Kn
    81.05.Mh
    81.70.Bt
    Opis:
    This research focuses on the biocompatible zirconia ceramic (ZrO₂) material and load behavior causing fatigue on the surface of the dental implant in dentistry. Fatigue fracture and wear have been identified as some of the major problems associated with implant loosening, stress-shielding and ultimate implant failure. A static and cyclic fatigue testing of ceramic dental implant in laboratory conditions for this investigation were carried out according to the ISO protocol 14801 under worst-case conditions. A finite element analysis (FEA) of dental implant with accurate geometry and material properties were developed to make realistic investigations on biocompatibility of the implant biomaterial properties and mechanical fatigue behavior of new dental implant comparing Von-Mises criteria and maximum stress levels. The comparison of calculated fatigue life simulation data of and experimental data for the biocompatible zirconia ceramic dental implants is presented. As a conclusion zirconium implant exceeded the established values for maximum incisal bite forces reported in the literature and and also shows better performance than titanium implant material. The results of fatigue of biocompatible zirconia analysis are helpful for implant biomaterial selection and design for clinical interest in dentistry.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 4; 1195-1198
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computational Engineering Analysis of Low-Cycle Loading for AMF-Active Micro Forceps 316 L-Stainless Steel Material by Finite Element Method
    Autorzy:
    Karaçalı, Ö.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402434.pdf
    Data publikacji:
    2015-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.70.-q
    81.70.Bt
    02.70.-c
    02.70.Dh
    Opis:
    Antagonistic contact on tips of active micro forceps produces surface stresses leading to fracture and wear finally leading to fatal failure. It was the aim of the present research to study the outcome of low cycle loading testing parts of active micro forceps materials involving either surface contact fatigue or flexural loading mechanisms. For this purpose, this research was focused on the mechanisms of the fatigue life of 316 L-type stainless steel active micro forceps in low cycle loading conditions. This could result in the fatigue failure of active micro forceps at stress levels below the yielding stress of material. Thus, researching the material and mechanical behaviors of an active micro forceps structure and force mechanism under low cycle loading is vital. Finite element method with accurate geometry and material properties was employed for a biocompatible forceps' tips in the computational modeling. To justify the data collected from Von Mises' yield condition, the Haigh diagram was developed to analyze fatigue wear. The low cycle loading behavior of the active micro forceps was analyzed in computational engineering tool of ANSYS LS-DYNA under operational load conditions in vitrectomy. The results of the analysis obtained from this research are helpful for micro component manufacturer and clinic surgery operation.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 2B; B-40-B-42
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Structured Analysis of Stainless Steel 316L Material of Micro-Forceps Used in Vitrectomy Surgery by Biomechanics Modeling
    Autorzy:
    Karaçalı, Ö.
    Çetiner, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1194827.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.85.gp
    02.70.Dh
    Opis:
    Micro-forceps are a promising minimally invasive means of grasping, peeling, pulling into the eye ball. However, there is currently a diversity of micro-forcep designs and application methods that have, primarily, been intuitively developed by the researchers. To enable the rational design of optimized micro-forcep devices, a greater understanding of human eye biomechanics under small deformations is required. The purpose of this study was to investigate the biomechanical analysis of micro-forceps which are tools for operations that require the microscopic manipulation of tissues in eye surgery conditions. Retinal microsurgery requires extremely delicate manipulation of retinal tissue where tool-to-tissue interaction exists. Behavior of a micro-forcep is analyzed in ANSYS under operation pre-load conditions in vitrectomy. The effect of numerical analysis was determination of strains and stresses in working part of the micro-forcep. Results of analysis indicate diverse values of strains and stresses distribution in working part of the micro-forcep depending on its geometry. With a change in the material, the friction force can be determined using the upper and lower boundaries of different materials to choose from. The results of this analysis are helpful for eye surgeons for clinical interest.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 180-182
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Finite Element Analysis of Pallet-Nail Materials Used in Pallet Joint Design for Material Handling Works
    Autorzy:
    Karaçalı, Ö.
    Taner Ulguel, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1194867.pdf
    Data publikacji:
    2014-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    02.70.Dh
    62.20.F-
    Opis:
    The aim of this research was to construct a nailing model based on the shape and material of the prepared nail-pallet joint. The finite element analysis was used due to the stress occurring in joining process, geometry of the nail and rigidness of the wood material. The behavior of palette system under loading was investigated according to material behavior and strain-stress distribution in this research. In order to simulate phenomena in real system, a simplified model of nail-pallet joint system was worked out. The simplifications concerned mostly geometry of nail. The nail was represented by height h = 60 mm, corresponding with thickness of pallet. The effect of numerical analysis was determination of strains and stresses in working part of the nail-pallet. Results of analysis indicate diverse values of strains and stresses distribution in working part of the nail-pallet depending on its geometry. The numerical analysis of the operational nail-pallet joint system in simulated conditions of nailing in a pallet can be a basis for optimization of cutting edge geometry of joining tools as well as for selection of their mechanical properties and suitable materials. The results of this analysis are helpful for pallet design engineers for material selection and material handling interest.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 2; 183-185
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies