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130 result(s) for "Hariram, V."
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A Brief Review on PEEK as biomaterial, Importance of Implant Design, 3D Printing and FEA in Dental Implant
The present research study seeks to provide a thorough literature evaluation on implant-based materials, implant design and application of FEA approach (Finite Element Analysis). PEEK biomaterial is the primary subject of this article. Implant design and the significance of PEEK material in future clinical applications are significant subtopics in this study. Due to its excellent physical qualities, titanium plays an essential part in the implant business. PEEK and zirconia materials appear to have promise for the future. Biomedical uses of PEEK and its composite materials in a number of different fields, including dentistry, hip implant, anterior plate fixation, crainoplasticity, knee implants, spine implants, and so forth. The implant's impact and success are greatly impacted by the prudent selection of implant biomaterial. Before the PEEK implant can replace titanium and zirconium, further research and well-controlled clinical studies are required. In this study, a number of biomaterials that were used in the implant industry will be finalized.
Investigation of Strain and deformation analysis of Biomaterial in Dental Implant: A 3D FEA Study
In this study, the deformation and strain values in the periimplant bone were assessed in order to examine the impacts of three different dental implant thread pitch settings. In this work, the diameter, length, material, and elastic modulus impacts on the biomechanical behaviour of a new dental implant were predicted using the finite element method. Both a three-dimensional dental implant model and a mandibular segment model that matched the premolar region were acquired. loads that are axially applied. The dental implant models were built using Solidworks 2021, and the simulations were carried out using Ansys / CAE. In this work, FEA was used to analyse how the bioactive material (30% CFR PEEK) and implant thread design influenced strain and distortion in the implantation. According to the study's hypotheses, the 30% CFR PEEK implant system will be made of an isotropic, homogeneous, and linearly elastic material. Using the modelling software tools Solidworks and Ansys Workbench, strain and deformation at the implant and implant-cortical bone contact are examined and evaluated. In the present investigation, FEA was used to analyse how the bioactive material (30% CFR PEEK) and thread design affected strain and distortion in the implantation system. The 30% CFR PEEK implant system will reportedly be built of an isotropic, homogenous, and linearly elastic substance, according to the study's hypothesis. We study and assess strain and distortion at the implant, cortical and cancellous bone using the modelling software tools Solidworks and Ansys Workbench.
Maximizing the combustion phenomenon with reduced emission of a compression ignition engine fulled with Dunaliella salina biodiesel and hydrogen blends
Energy resource sustainability has been of critical concern as a result of unlimited energy demand worldwide. In this research work, extraction of the alternate fuel for diesel (i.e., biodiesel) from the source Dunaliella salina , which is a greenish microalga with higher lipid content comparatively, is being primarily addressed. Cultivation was provided under nitrogen starvation, f/2 trace-element supplemented, nutrient medium supplemented with vitamins and CO 2 . Ultrasonic extraction method at 50 Hz yielded 645 ml of Dunaliella salina bio-oil in repeated batches. One stage base catalysed process of transesterification with 1:8 mol ratio of methanol to oil, 0.6% w/w NaOH catalyst, reaction temperature of 50 °C and reaction time of 120 min yielded 612 ml Dunaliella salina biodiesel in 6 batches with 94.8% efficiency in transesterification. Physio-chemical properties of the produced biodiesel were determined to be as per ASTM specifications. Additional GCMS, NMR and FTIR spectroscopic study of the derived biodiesel established its suitability for CI engine. Dunaliella salina biodiesel blend at 20% volume ratio was compared with diesel on combustion, emission and performance characteristics of Kirloskar 240 PE test engine. Additional supplementation of Hydrogen by DuSaBD20 at 3 LPM, 6 LPM and 9 LPM had pronounced impact on the engine performance with remarkable CO reduction and UBHC and a slight increase in engine NOx was observed. Additionally, the study of cost of operation on H 2 induction was also investigated.
New mass optimization technique to achieve low mass BIW designs using optimal material layout methodology on the frontal vehicle crash
BIW is the car body made of sheet metals welded together. Numerous researches were performed across the world to optimize and save mass on the car body design. This paper describes the new methodology which can be used to reduce mass of the BIW in a full frontal rigid wall impact crash model. The new methodology of identifying materials for the BIW components has been presented. Frontal crash load case has been considered for the research. Since Frontal impact is an evaluation to predict only the frontal performance, parts in the front impact load path like dash, A-pillar, reinforcements and hinge pillar region has been considered as the design space for the material layout optimization. List of materials have been provided as a variable for a list of parts in the BIW and DOE sampling were generated. Response for the DOE designs results have been extracted to study the sensitivity of the parts for the frontal load case and design performance was analysed. Subsequent multi-objective optimization have been performed based on the DOE results, to achieve an optimal material selection for each of the parts in the design space. Further performance improving techniques considering the sensitivity chart have been explored and optimal design with low mass and improved frontal crash performance have been achieved and presented. The use of this methodology on a full vehicle crash model has achieved 15.4 % mass saving with the performance better than the baseline design.
Redundant Control Strategies for Vacuum Brake Booster Failure using Hardware Intersection Loop Analysis
This article explores the effectiveness of a novel component called as Brake Boosting Assistant (BBA) in enhancing the performance of hydraulic braking systems by addressing the issue of runout in vacuum boosters. The hydraulic braking system plays a critical role in ensuring safe stopping and slowing down of vehicles. However, the performance of the vacuum booster can be compromised by runout. The BBA serves as a monitoring and supplementary support system for the vacuum booster during runout conditions, ensuring the hydraulic braking system remains efficient. The study employed a hardware intersection loop setup to evaluate the functionality of the BBA. The results demonstrate that the BBA successfully maintains the performance of the vacuum booster and ensures effective hydraulic braking.
Enhancing Crash Box Performance: Study of Single-Screw Dynamics for Improved Structural Integrity and Force Levels in Low-Speed Frontal Crashes
This study investigates the force acting on a single screw within a square crash box during low-speed frontal crash simulations against a rigid wall. Force-displacement (F-D) curves were generated using aluminium alloy 5052 crash boxes ranging in thickness from 2mm to 5mm. Results indicate a progressive increase in force from 13.387 kN to 41.334 kN and a decrease in displacement from 212.97mm to 134.54mm with increasing thickness. This suggests improved structural integrity and higher resistance to deformation with thicker crash box configurations, aligning with principles of vehicle safety design. Future research will explore the development of mechanically adjustable front structures and methods to enhance screw configurations for increased force absorption. This investigation enhances the understanding of crashworthiness and offers insights into optimizing crash box design to enhance occupant safety in low-speed frontal crashes.
Structural Responses of Aluminium Alloy and PMC Traverse Bars in a Vulcanization Equipment - A Comparative Study
Vulcanization is a process of joining the conveyor belt with high pressure and temperature. The machine consists of several components like stiffness bar, vertical supporting rod, heating plate, insulator, fasteners and particularly traverse bar which adds on to the weight of the machine. The machine consists of 5 to 10 traverse bar which is made aluminium 6061 alloy. In the present work, the weight of the vulcanization machine is reduced by reducing the weight of the traverse bar. This is achieved by choosing a less dense material. This research work mainly focused on reducing weight of the traverse bar by choosing polymer matrix composite material like epoxy carbon fiber and epoxy s-glass. A modelling and simulation work is conducted for aluminium alloy 6061 as well as composite material, deformation and stress are compared. I beam for epoxy carbon fiber deformation increased by 150 % and for epoxy s-glass increased by 366% comparing with traverse bar. In I beam with stiffener epoxy carbon fiber deformation is reduced by 38% for epoxy s-glass is increased by 6 %. Similarly, for equivalent stress composite materials for I beam is increased and for I beam with stiffener is decreased. The weight reduction from aluminium alloy to composite material is for epoxy carbon fiber is 81.70% and epoxy s-glass is 75.43%. In with stiffeners epoxy carbon fiber is 78.25% and epoxy s-glass is 70.81%.
Non-Edible and Edible Feedstock’s for Biodiesel Production - A Critical Review on Bio-oil Extraction and its Transesterification
Quick diminution of fossil fuels, fast population growth and industrialization, causes growing worry about reducing the world's energy consumption by finding an alternative to fuels generated from petroleum. In place of petroleum-derived diesel, biodiesel can be used as a fuel for combustion engines. This study focuses on the transesterification and esterification reactions used to produce biodiesel using various vegetable oil as a feedstock. The goal of the present study is to evaluate the viability and difficulties of using edible and non-edible vegetable oil as a potential feedstock for production of biodiesel, including an overview of biodiesel feedstock’s, edible and non-edible oil resources, vegetable oil extraction methods, their physicochemical properties and fatty acid compositions, biodiesel production techniques, benefits and limitations of using vegetable oil as a feedstock.
Design and Development of Power Generation using Vehicle Suspension
The design and construction of an energy-storing device utilizing coil spring suspension are the focus of this project. The device's purpose is to collect and hold motion-generated energy from automobiles with coil-spring suspension systems. The energy can then be transferred to a bigger storage system for later use or used for a variety of purposes inside the car, such as lighting or auxiliary systems. A DC generator and a coil spring make up the device, which transforms mechanical energy into electrical energy. The generator generates power when the car travels over a bump or an uneven surface because the coil spring is compressed. After that, the electricity is stored in a capacitor or battery for later use.
Functionality Analysis of an Automated Hill Start Assistance System using Hardware Intersection Loop
The objective of the hill start assist (HSA) feature is to aid any motorist who attempts to provide initial motion to a vehicle in uphill condition. In uphill conditions, the activated system will keep the additional required pressure in the wheel brakes for an extended period of time than the driver can with the brake pedal. As a result, the individual will be able to shift his foot from the brake pedal to the accelerator pedal. A new self-contained module which depends on electronic hydraulic operations, built around an actuator that does not require a solenoid has been designed and tested in this study. The new designed system does not impart functionality comparable to a parking brake that may be employed. The new HSA system will be activated only when the ignition system is turned on. Once the ignition key is disengaged or the clutch is completely released, the HSA device will automatically alleviate the pressure on the brakes. The hardware intersection loop simulation rig is fabricated to test the functionality and performance of the newly developed HSA system in controlled settings.