The Knee Wear Prediction Of Uhmwpe Tibial Insert Using Vipro Platform
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The Knee Wear Prediction Of Uhmwpe Tibial Insert Using Vipro Platform
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Author : Lucian Capitanu
language : en
Publisher: Infinite Study
Release Date :
The Knee Wear Prediction Of Uhmwpe Tibial Insert Using Vipro Platform written by Lucian Capitanu and has been published by Infinite Study this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
The failure mechanism was postulated as a combination of the high level of loading during normal activities and a non-conforming contact mechanism between the femoral condyles and the tibial insert. The question that arises is: could be this phenomenon evaluated quantitatively a priori, e.g., could be the failure due to delamination wear predicted? In order to do some finite element simulations were performed to dynamically determinate the contact area and contact pressure for three different activities. The results obtained using VIPRO platform lead to the conclusion that many clinically reported failures of the tibial tray are caused by the adhesive and fatigue wear.
Advances In Mechanical Problems Of Functionally Graded Materials And Structures
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Author : Indra Vir Singh
language : en
Publisher: MDPI
Release Date : 2019-10-28
Advances In Mechanical Problems Of Functionally Graded Materials And Structures written by Indra Vir Singh and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-28 with Technology & Engineering categories.
The book deals with novel aspects and perspectives in functionally graded materials (FGMs), which are advanced engineering materials designed for a specific performance or function with spatial gradation in structure and/or composition. The contributions mainly focus on numerical simulations of mechanical properties and the behavior of FGMs and FGM structures. Several advancements in numerical simulations that are particularly useful for investigations on FGMs have been proposed and demonstrated in this Special Issue. Such proposed approaches provide incisive methods to explore and predict the mechanical and structural characteristics of FGMs subjected to thermoelectromechanical loadings under various boundary and environmental conditions. The contributions have resulted in enhanced activity regarding the prediction of FGM properties and global structural responses, which are of great importance when considering the potential applications of FGM structures. Furthermore, the presented scientific scope is, in some way, an answer to the continuous demand for FGM structures, and opens new perspectives for their practical use.
Modeling And Simulation Techniques In Structural Engineering
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Author : Samui, Pijush
language : en
Publisher: IGI Global
Release Date : 2016-08-12
Modeling And Simulation Techniques In Structural Engineering written by Samui, Pijush and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-12 with Technology & Engineering categories.
The development of new and effective analytical and numerical models is essential to understanding the performance of a variety of structures. As computational methods continue to advance, so too do their applications in structural performance modeling and analysis. Modeling and Simulation Techniques in Structural Engineering presents emerging research on computational techniques and applications within the field of structural engineering. This timely publication features practical applications as well as new research insights and is ideally designed for use by engineers, IT professionals, researchers, and graduate-level students.
Mechatronic Systems Design And Solid Materials
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Author : Satya Bir Singh
language : en
Publisher: CRC Press
Release Date : 2021-05-10
Mechatronic Systems Design And Solid Materials written by Satya Bir Singh and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-10 with Technology & Engineering categories.
This volume elaborates on mechatronics as the synergistic integration of mechanical engineering with electronics and intelligent computer control in the design and manufacturing of industrial products and processes. It considers the integration of mechanical systems (mechanical elements, components, machines), electronic systems (microelectronics, sensor and actuator technology), and information technology. The book’s chapters present the principles of mechatronic systems design and solid materials in small elementary steps, provide an abundance of examples, and feature problems that are as practical as possible without becoming too involved with many extraneous details.
Medicine Update 2020 2 Volumes Progress In Medicine 2020
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Author : S Arulrhaj
language : en
Publisher: Jaypee Brothers Medical Publishers Pvt. Limited
Release Date : 2019-12-13
Medicine Update 2020 2 Volumes Progress In Medicine 2020 written by S Arulrhaj and has been published by Jaypee Brothers Medical Publishers Pvt. Limited this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-12-13 with Medical categories.
SECTION 1: CLINICAL MEDICINE SECTION 2: CARDIOLOGY SECTION 3: DIABETOLOGY SECTION 4: NEUROLOGY SECTION 5: GASTROENTEROLOGY SECTION 6: PULMONOLOGY SECTION 7: NEPHROLOGY SECTION 8: EMERGENCY MEDICINE SECTION 9: INFECTIOUS DISEASES SECTION 10: ENDOCRINOLOGY SECTION 11: RHEUMATOLOGY SECTION 12: LIFESTYLE MEDICINE SECTION 13: GERIATRIC MEDICINE SECTION 14: NUCLEAR MEDICINE SECTION 15: OBSTETRIC MEDICINE SECTION 16: ONCOLOGY SECTION 17: POISONING AND TOXICOLOGY SECTION 18: PSYCHIATRIC MEDICINE SECTION 19: VASCULAR MEDICINE SECTION 20: SOCIAL MEDICINE SECTION 21: HEMATOLOGY SECTION 22: FUTURISTIC MEDICINE SECTION 23: RADIOLOGY SECTION 24: MISCELLANEOUS
Neutrosophy
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Author : Florentin Smarandache
language : en
Publisher:
Release Date : 1998
Neutrosophy written by Florentin Smarandache and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Mathematics categories.
Applications And Techniques For Experimental Stress Analysis
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Author : Karuppasamy, Karthik Selva Kumar
language : en
Publisher: IGI Global
Release Date : 2019-12-27
Applications And Techniques For Experimental Stress Analysis written by Karuppasamy, Karthik Selva Kumar and has been published by IGI Global this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-12-27 with Technology & Engineering categories.
The design of mechanical components for various engineering applications requires the understanding of stress distribution in the materials. The need of determining the nature of stress distribution on the components can be achieved with experimental techniques. Applications and Techniques for Experimental Stress Analysis is a timely research publication that examines how experimental stress analysis supports the development and validation of analytical and numerical models, the progress of phenomenological concepts, the measurement and control of system parameters under working conditions, and identification of sources of failure or malfunction. Highlighting a range of topics such as deformation, strain measurement, and element analysis, this book is essential for mechanical engineers, civil engineers, designers, aerospace engineers, researchers, industry professionals, academicians, and students.
Computational Wear Prediction Of Uhmwpe In Knee Replacements
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Author : D. Zhao
language : en
Publisher:
Release Date : 2006
Computational Wear Prediction Of Uhmwpe In Knee Replacements written by D. Zhao and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Arthroplasty, Replacement, Knee categories.
A multibody dynamic contact model predicted the damage sustained by two tibial inserts tested under different conditions on an AMTI knee simulator machine. The model required a wear factor of 7.7 × 10−7 mm3/Nm to match the wear volume measured from the first insert after 0.86 million cycles of simulated gait. The model matched the medial and lateral damage depths measured from the second insert to within 0.3 mm after 5 million cycles of simulated gait and stair (10:1 ratio). Computational models may be valuable for screening new knee implant designs rapidly and performing sensitivity studies of component positioning issues.
Correlation Between Computed Contact Parameters And Wear Patterns On A Retrieved Uhmwpe Tibial Insert
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Author : David Alderson Knox
language : en
Publisher:
Release Date : 2011
Correlation Between Computed Contact Parameters And Wear Patterns On A Retrieved Uhmwpe Tibial Insert written by David Alderson Knox and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Throughout the life of a total knee arthroplasty implant repeated loading causes wear on the contact surfaces. Attempts have been made in the past to predict locations of wear through computational modeling and physical testing. This study examines a method of using computer modeling techniques to describe the kinematics of an implant, and to use kinematic data in finding areas of contact and internal shear stress that correlate to observed wear damage. A retrieved cruciate-retaining knee implant was reverse engineered and analyzed in one cycle of simulated gait using multibody dynamics and aligned according to resulting kinematic data for finite element analysis. Results showed a correlation between the predicted areas of contact and internal shear stresses and the observed wear damage.
A Novel Method To Assess Wear Rates Of Retrieved Tibial Inserts Following In Vivo Use
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Author : Tanille J. Paniogue
language : en
Publisher:
Release Date : 2014
A Novel Method To Assess Wear Rates Of Retrieved Tibial Inserts Following In Vivo Use written by Tanille J. Paniogue and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Ultra-high molecular weight polyethylene (UHMWPE) on cobalt chrome is the bearing couple of choice for total knee arthroplasty . The number of patients undergoing total knee arthroplasty has been steadily growing and is projected to continue increasing rapidly in the near future. Many of these patients are younger and more active and therefore need a longer lasting device. However, many of these devices fail prematurely and often the primary reason for failure and ultimately revision is due to wear related issues. Therefore, examining how wear rates of the UHMWPE tibial insert change during in-vivo use can help elucidate the mechanisms of accelerated wear and hopefully aid in finding solutions to combat wear related failures. Different crosslinking treatments have been employed by manufacturers to improve wear resistance of the polyethylene . While this has been shown to be an effective way to reduce wear, crosslinking has led to other issues such as oxidative instability and a decline in mechanical properties. The purpose of this body of work is to examine how changes in oxidation, after in-vivo use, affect wear resistance. A novel testing method was developed to test the native articular surface from retrieved tibial inserts in a laboratory Pin-on-Disk (POD) simulator. The method was validated using short-duration implant articular surfaces and non-articular control pins. In the absence of high surface oxidation or severe surface damage, the articular surface pins had comparable steady state wear rates to their bulk counterparts. Test of devices with longer in-vivo service show chemical changes consistent with a free-radical mediated oxidation mechanism. Tribological assessment of the articular surfaces shows increasing wear rates as a function of oxidation. While this relationship has been hypothesized in the literature, these experiments represent the first physical demonstration of the phenomenon. The wear mechanism is further explored through infrared spectroscopy, assessment of the wear scar, and documentation of evolution of the contact surfaces in the articulation.