Browsing by Author "Nafe, Momin"

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    Design analysis and fabrication of foldable bicycle
    (AIKTC, 2017-04) Nafe, Momin; Dakhwe, Mujeeb (14DME145); Shaikh, Abdul (14DME160); Shaikh, Faheem (14DME165); Shaikh, Lukman (14DM168)
    Petrol In the present day lifestyle man is not able to dedicate specific time for his health, importance is least given to exercise and body fitness due to time shortage and stressful life. To cope with time deficit, we can utilize the time spent on commuting efficiently to exercise by using bicycles, thereby also contributing to pollution control. But regular bicycles occupy sufficient space to park, are not easy to carry around and are probable to theft. Transport has been one of the most important issues to be dealt with in the present day situation as commuting from place to place within the city has become a tedious and an expensive task. It is very difficult to reach the nearest public transport facility and in many cases the destination will be very far from the main roads where the public transport might not be able to commute or it might be very expensive. To overcome a common problem faced by the society, an idea is conceptualized to design and fabricate a foldable bicycle. We already have seen many foldable bicycles in the global market but the main idea of this project is to provide a foldable bicycle which is light & sleek yet rigid & safe, easy to handle and easy to maintain. Unlike the conventional cycles, this bicycle will occupy very less space and also is very easy to be carried around. The main objective is to design and develop a foldable bicycle which is comfortable to ride and economical. Regarding to the point that some people for solving this problem use bicycles as a transportation .We decided to design a bicycle that is folding design. It can be folded when is needed. In this way it can be placed in a small bag .Another important point about it: Doesn’t need for any external electrical supply and fossil fuel. This report is aimed for our client which came to ask us to make a remodeled version of the folding bike with the most important difference, which is: a lower production costs (approximate 75%).successful design of folding bicycle should take into account the function, material properties, and fabrication process. There are some other factors that should be considered in anticipating the behavior of materials for folding bicycle. In order to understand the relationship between material properties and design of a folding bicycle and also for the future direction in new materials with new design, a comprehensive study on the design under different conditions are essential. Therefore, a systematic study on the relationship between material properties and design for folding bicycle has been performed. The advantages and disadvantages matrix between conventional bicycle and folding bicycle is presented for better understanding of the materials properties and design. It was found that the materials properties of the folding bicycle frame such as fatigue and tensile strength are the important properties for the better performance of the frame. The relationship between materials properties and design is not straight forward because the behavior of the material in the finished product could be different from that of the raw material. The swing hinge technique could be a better technique in the design for the folding bicycle
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    Design of horizontal pressure vessel
    (AIKTC, 2015-05) Nafe, Momin
    Pressure vessels are one of the most important equipment in the engineering world. Vessels are used in everyday life and on a very large scale. From a simple gas cylinder to huge distillation towers the world is full of Pressure Vessels. We cannot imagine our world without these Pressure Vessels. These Vessels have got great importance and diverse use in the engineering world. We have made an attempt to study these amazing engineering marvels, design, analyze and in a certain way optimize them. Our project is the design of a Horizontal Pressure Vessel. Our motive behind the selection of this project is to enter into the huge world of Pressure Vessels and to explore the various facets of a Pressure Vessel.
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    Evaluation and elimination of errors in impact testing machine
    (AIKTC, 2021-05) Nafe, Momin; Khan, Asad Gafoor (17ME27); Khan, Mohammed Adnaan Javed (17ME36); Khatri, Mohammed Ali Salim (17ME44); Nakhwa, Mehmood Nasir (17ME59)
    To determine the confidence of the test results, it is necessary to evaluate the main factors contributing to the uncertainty in Charpy impact measurement. These factors are: the uncertainty of reference force and length measuring devices and its long term instability, machine resolution, rated energy error, indicated energy error, losses due to the drag of the pointer, friction losses in the bearing and air resistance and other geometric para-meters. In this study the calibration process is based on the relevant Indian and international standard is explained. Most of the uncertainty elements are identified and directly verified. Other elements not be directly verified are analyzed or assessed using available information.
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    Gear T rains: Kinematics of machinery
    (AIKTC, 2019) Nafe, Momin
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    MR Fluid bicycle suspension system
    (AIKTC, 2021-05) Nafe, Momin; Utekar, Nandita Rajendra (17ME01); Khan, Ashfaq Sirtaj (17ME28); Khan, Mashuk Ebnesaud (17ME34); Khan, Mohd Waseem Mohd Rais (17ME35)
    Bicycles are an important element of society, and they are becoming more popular in industrialised countries as a result of climate change concerns. Suspension systems come in a variety of configurations on cross-country, downhill, and mountain bikes. Bicycle suspension technology has progressed from seats with suspension springs in the early 1900s to the numerous complicated designs of today's bicycles. Suspension design receives a lot of research and development money in the competitive cycling industry. Designers of bicycles have recently begun to use electrically controlled components such as drive systems and gears. Hydraulic damping is a typical design in bicycle suspension systems, and it works by squeezing a viscous fluid through a valve or a small gap in a plunger connecting the bicycle frame to the wheel, creating a force in the opposite direction of motion, decreasing the suspension's rate of motion.Electromagnetic magnetorheological (MR) suspension systems are now being used in automobiles, resulting in improved ride quality and control. Adding ferrous particles to the oil and applying a magnetic field to align the particles, decreasing the flow velocity of the oil and increasing oil viscosity in accordance to the strength of the electric field, is known as magnetorheological suspension. This final-year Mechanical Engineering project attempts to design an electromagnetic magnetorheological bicycle front suspension by combining two working technologies. To contrast it to conventional hydraulic bicycle suspension, the suspension system was created, manufactured, and tested.
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    Production improvement by line balancing and 5S
    (AIKTC, 2020-05) Nafe, Momin; Abdul, Rahiman (17DME96); Ansari, Abu Fahad (17DME98); Ansari, Salman (17DME103); Kungle, Tabish (17DME123)
    For continuous improvement in an organization, Japanese philosophy Kaizen is very popular. flawless. Concepts of kaizen methodology and proper implementation of tools can lead to a successful kaizen program in a company. Various other companies also adapt to various disciplines and methods as per need and ease of application. Few are JIT ( Just In Time), Manufacturing organizations typically have raw materials, components, sub-assemblies, tools and equipment’s; semi-finished goods etc., the inventory of an item should not be neither too high nor too less. It should be optimal. The recent development in inventory management is JIT (Just-in-Time). JIT implies handling of inventory in a much disciplined way. It requires changes in culture. It also encompasses the Japanese managerial characteristics i.e., Lifetime employment, implicit control.The design of assembly lines is an important issue in manufacturing engineering management and control. The idle time is the most interesting performance index for assembly line design. The classical simple line-balancing problem (SALBP) consists of assigning tasks, necessary for processing a product, to workstations such that the idle time (number of stations, cycle time, cost) is minimized while precedence constraints between tasks are satisfied. From the worst-case analysis point of view, the SALBP problems are NP-hard in strong sense. In this company initial the concept of Line Balancing was tried to implemented but due to unnecessary hardships of shifting of stations a new concept was learnt and applied in the company. New concept which was implemented was 'The Concept of 5S’. 5S is a basic foundation of Lean Manufacturing systems. It is a tool for cleaning, sorting, organizing and providing the necessary groundwork for workpiece improvement. This paper dealt with the implementation of 5S methodology in the small scale industry. By following the 5S methodology, it shows significant improvements to safety, productivity, efficiency and housekeeping. The improvements before and after 5S implementation is shown by pictures in the paper. It also intends to build a stronger work ethic within the management and workers who would be expected to continue the good practices.
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    Soft door closer
    (AIKTC, 2020-05) Nafe, Momin; Khan, Arif Aliahmed (15ME82); Md. Shahid, Raza (15ME86); Kumar, V. Ranjeet (16ME92); Siddiqui, Hussain (14ME117)
    A door closer is a mechanical device that closes a door, which is open by push or pull action manually or automatic. The closer available in a market can involve the consideration of a variety of criteria. In addition to the closer's performance in fire situations, other criteria is resistance to opening forces (for use by disabled or infirm), control over the rate of closing, safety, durability, risk of vandalism, and aesthetics. This paper review the existing door closer available in a market. also gives the detail concept and mechanism for the new design of door closer , by using compressive spiral spring, reed valve and simple cylinder arrangement.