Papers by NITINKUMAR ANEKAR
American journal of mechanical engineering, Apr 28, 2019
Single Lap Joints are used extensively in the aerospace industry due to their lower weight and ab... more Single Lap Joints are used extensively in the aerospace industry due to their lower weight and absence of stress concentration due to drilled holes. However, their lesser strength remains an important limitation. Different modes of failures have been reviewed in this article. The bond strength of a single lap joint can be varied by varying its overlap length, while, the strength does not strictly increase with increasing bonding length. Rather, it increases up to an optimum value and decreases further. This optimum value was obtained, which is found to be in agreement with previous studies in this regard. The surfaces of the bonded aluminum plates were modified by generating notch shaped pattern on bonding area. Due to notch pattern of bonding, the bond strength increases up to 75˚ notch angle and then decreases with further increase in the notch angle. The experimental results of bonded joints without notch also were obtained by software analysis. Maximum strength of joint length reached at optimum length and optimum notched surface pattern.
Lecture notes in networks and systems, Nov 1, 2022
Despite the fact that the ornithopter uses its own weight and may be raised or lowered as needed,... more Despite the fact that the ornithopter uses its own weight and may be raised or lowered as needed, Arduino makes it easier to manage. Software simulation and calculation rather than experimentation are used in this work. The idea of human flying has been around for a long time. Flapping wings have been used in varied degrees to imitate flying. A bio-inspired flying robot called an ornithopter has gained popularity as a result of these experiments. The field of ornithopters, which are biomimetic flying machines with flapping wings that create lift, is one that is rapidly expanding in robotics. Payload hauling and carrying are among the many real-world uses for large-scale ornithopters. In spite of the enormous interest in bio-inspired robots, there are currently none that weigh more than 2 kg in operation. As a result, ornithopters can fly in low-speed conditions that have been reproduced by man-made aircraft, such as helicopters. Ornithopters are designed to fly in circumstances where biological fliers flourish, such as low speeds, hovering, and metropolitan areas, where they can maintain their flight. To fill the void left by fixed-wing and rotary-wing aircraft capabilities in the MAY sector, researchers are studying flapping-wing vehicles’ flight dynamics. Unknown flow characteristics including flow separation and vertical flow differentiate this trip. As a result of this research, an ornithopter prototype design guidance, evaluation, and validation system were developed. A conceptual model and a test bed are incorporated in the system. Models of active lab’s ornithopter prototype are based on the same kinematic chain as the real thing. As a result, ornithopter prototype designs may be predicted using a theoretical model. SolidWorks was used to create a real ornithopter prototype based on the model’s predictions. It was possible to verify theoretical model predictions by examining an ornithopter specimen on a test bed. The simulations and visualizations were all done in MATLAB using the dimensions we gathered using a four-bar slider-crank mechanism. The power required to compute input, output, and lift forces was done using simulations, and the results were displayed at the conclusion. In the end, we found that the ornithopter could fly in accordance with the theoretical model predictions.KeywordsOrnithoptersBiomimeticRoboticsBio-inspiredKinematic chainAerodynamicsForcesSimulations
International journal of research in engineering and technology, Aug 25, 2014
A vibration exciter is a machine which produces mechanical vibratory motion to which the test obj... more A vibration exciter is a machine which produces mechanical vibratory motion to which the test object is subjected. This article presents design, construction, performance and testing of mechanical vibrations exciter, which have unbalanced mass to generate uniaxial vibrations. The exciter is designed to produce a given range of harmonic or time dependent excitation force and displacement through a given range of frequencies. The mechanical vibration exciter produces vibrations due to centrifugal force of rotating eccentric mass. The vibrations produced lie in the low frequency range. The construction of working device and its important parts are described here. The most important part of exciter is unbalanced mass attached with rotating disc of motor. Exciter has unbalanced mass at one end of disc, base frame, top plate as platform, springs and motor. This exciter is used for testing of welded parts, consolidation of concrete, concrete filling in mould. The obtained experimental results are in line with theoretical results.
Materials Today: Proceedings
Materials Today: Proceedings, 2021
Effective risk management is very important to increase the probability of success in software pr... more Effective risk management is very important to increase the probability of success in software projects. Indeed, like other types of projects, software projects are also susceptible to various problems that can lead to the cancelation of their development or to the development of systems that do not meet the client's requirements. One of the main activities of risk management is the risk identification, because the list of risks generated in this activity is used all along the risk control process. Thus, this work proposes the creation of an expert system which is capable of identifying risks in software projects by using the lessons inductively learned from similar software projects already developed. By using this proposed expert system, project managers and software developers must be able to avoid errors of the past.
Materials Today: Proceedings, Dec 1, 2021
Journal of Bio- and Tribo-Corrosion, Nov 1, 2019
Biodiesel as an alternative fuel is overcoming to replace petroleum diesel partially. The tribolo... more Biodiesel as an alternative fuel is overcoming to replace petroleum diesel partially. The tribological performance of biodiesel is crucial with respect to application in automobiles. Cast iron is widely used in for manufacturing of many automobile engine parts such as piston, valves, piston rings, etc. This research article evaluates the wear behavior of spheroidal graphite cast iron which is used for the manufacturing of piston rings with respect to different blends of biodiesel. Many experiments were carried out under metal to metal contact and lubricated sliding condition on, pin on disc wear testing machine. This shows the metallographic changes due to wear damage. Previous experimental result shows that friction coefficient and wear loss decreases significantly due to decrease in lubrication percentage of palm biodiesel. The test parameters used under this work were 8 kg, 10 kg, 12 kg, 14 kg and 16 kg loads for 1 h, at speed 300 rpm and at ambient temperature. Wear behavior of spheroidal graphite cast iron is evaluated using five different blends of biodiesel, B0 (100% petroleum diesel), B5 (5% biodiesel), B10 (10% biodiesel), B20 (20% biodiesel), B100 (100% palm biodiesel)).The period for which cast iron can sustain is determined by its wear and abrasion resistance. Due to formation of lubrication layer of ester compounds in palm biodiesel wear resistance of nodular cast iron increases as biodiesel percentage increase in the blend. Therefore, high wear resistance is critical for ensuring a long life of the cast iron in biodiesel environment. The results showed that the B100 has higher coefficient of friction and lowest surface roughness and wear volume loss as compared with petroleum diesel (B0). It also shows that wear and friction decrease as percentage of biodiesel increases. Scanning electron microscopy (SEM) investigations used to analyze the structure and surface morphology. Wear scar diameter (WSD) was investigated using optical microscopy in tested specimen. The wear rate was found to be more in petroleum diesel compared with palm biodiesel than other blends.
Applied Energy, 2003
This paper considers the economics of using photovoltaic (PV) technology for developing remote ar... more This paper considers the economics of using photovoltaic (PV) technology for developing remote areas. “East Owienat” in Upper Egypt is the chosen region: there, the feasibility of using PV systems for the pumping of ground water in comparison with using diesel units, taking into consideration the different parameters affecting the costs and the present value of both systems, is considered. The study proved that PV-battery systems can be used efficiently for water pumping at East Owienat: the cost of the water unit pumped by PV systems is much less than that pumped using diesel systems, and the water cost is more sensitive to PV cells’ prices than their life-time periods.
Merchants selling products on the Web often ask their customers to review the products that they ... more Merchants selling products on the Web often ask their customers to review the products that they have purchased and the associated services. As ecommerce is becoming more and more popular, the number of customer reviews that a product receives grows rapidly. For a popular product, the number of reviews can be in hundreds or even thousands. This makes it difficult for a potential customer to read them to make an informed decision on whether to purchase the product. It also makes it difficult for the manufacturer of the product to keep track and to manage customer opinions. For the manufacturer, there are additional difficulties because many merchant sites may sell the same product and the manufacturer normally produces many kinds of products. In this research, we aim to mine and to summarize all the customer reviews of a product. This summarization task is different from traditional text summarization because we only mine the features of the product on which the customers have expressed their opinions and whether the opinions are positive or negative. We do not summarize the reviews by selecting a subset or rewrite some of the original sentences from the reviews to capture the main points as in the classic text summarization. Our task is performed in three steps: (1) mining product features that have been commented on by customers; (2) identifying opinion sentences in each review and deciding whether each opinion sentence is positive or negative; (3) summarizing the results. This paper proposes several novel techniques to perform these tasks. Our experimental results using
Materials Today: Proceedings, 2021
American Journal of Mechanical Engineering, 2019
Single Lap Joints are used extensively in the aerospace industry due to their lower weight and ab... more Single Lap Joints are used extensively in the aerospace industry due to their lower weight and absence of stress concentration due to drilled holes. However, their lesser strength remains an important limitation. Different modes of failures have been reviewed in this article. The bond strength of a single lap joint can be varied by varying its overlap length, while, the strength does not strictly increase with increasing bonding length. Rather, it increases up to an optimum value and decreases further. This optimum value was obtained, which is found to be in agreement with previous studies in this regard. The surfaces of the bonded aluminum plates were modified by generating notch shaped pattern on bonding area. Due to notch pattern of bonding, the bond strength increases up to 75˚ notch angle and then decreases with further increase in the notch angle. The experimental results of bonded joints without notch also were obtained by software analysis. Maximum strength of joint length reached at optimum length and optimum notched surface pattern.
Journal of Bio- and Tribo-Corrosion, 2019
Biodiesel as an alternative fuel is overcoming to replace petroleum diesel partially. The tribolo... more Biodiesel as an alternative fuel is overcoming to replace petroleum diesel partially. The tribological performance of biodiesel is crucial with respect to application in automobiles. Cast iron is widely used in for manufacturing of many automobile engine parts such as piston, valves, piston rings, etc. This research article evaluates the wear behavior of spheroidal graphite cast iron which is used for the manufacturing of piston rings with respect to different blends of biodiesel. Many experiments were carried out under metal to metal contact and lubricated sliding condition on, pin on disc wear testing machine. This shows the metallographic changes due to wear damage. Previous experimental result shows that friction coefficient and wear loss decreases significantly due to decrease in lubrication percentage of palm biodiesel. The test parameters used under this work were 8 kg, 10 kg, 12 kg, 14 kg and 16 kg loads for 1 h, at speed 300 rpm and at ambient temperature. Wear behavior of spheroidal graphite cast iron is evaluated using five different blends of biodiesel, B0 (100% petroleum diesel), B5 (5% biodiesel), B10 (10% biodiesel), B20 (20% biodiesel), B100 (100% palm biodiesel)).The period for which cast iron can sustain is determined by its wear and abrasion resistance. Due to formation of lubrication layer of ester compounds in palm biodiesel wear resistance of nodular cast iron increases as biodiesel percentage increase in the blend. Therefore, high wear resistance is critical for ensuring a long life of the cast iron in biodiesel environment. The results showed that the B100 has higher coefficient of friction and lowest surface roughness and wear volume loss as compared with petroleum diesel (B0). It also shows that wear and friction decrease as percentage of biodiesel increases. Scanning electron microscopy (SEM) investigations used to analyze the structure and surface morphology. Wear scar diameter (WSD) was investigated using optical microscopy in tested specimen. The wear rate was found to be more in petroleum diesel compared with palm biodiesel than other blends.
International Journal of Innovative Technology and Exploring Engineering, 2019
Bent tubes have a lot of various industrial applications. It is required for the transportation o... more Bent tubes have a lot of various industrial applications. It is required for the transportation of fluids or gases. It also used as construction elements in all industries like car, aviation and shipbuilding industry, refrigeration and air conditioning technology, furniture industry. The objective of this paper is to understand the material deformation occurring during the bending of the tube bends and study the effect of parameters viz. bending radius, bending angle, springback on ovality of tube during bending operation. Tube undergoes certain deformation during the bending process which introduces various defects in the tube bends. This will lead the acceptability of tube bends for certain application. For better understanding the approximation of the defect it is necessary to reduce it at the manufacturing level itself. The testing uses different bending die to differ the bending radius and tests are performed at different bending angle. These whole data has been used to find th...
International Journal of Current Engineering and Technology, 2011
In view of the current strategic defense scenario of the world, specifically Asia, it is necessar... more In view of the current strategic defense scenario of the world, specifically Asia, it is necessary to use modern security systems in air, land and water. One of the solutions is to have air security blanket or dome in the form of decoy missiles to intercept incoming enemy missiles. The current work was undertaken after the testing and analysis of the multi-nozzle stabilizer unit. A design for a single nozzle unit for the same rocket is now required. This paper covers the first half of a year-long effort which involves conceptualization and the initial design of the nozzle and stabilizing mechanism.
International Journal of Current Engineering and Technology, 2011
This paper gives study of design of a wet leak test machine, used for the detection of leakages i... more This paper gives study of design of a wet leak test machine, used for the detection of leakages in radiators. It is based on the technique of submerging the part in the water that is stored in an immersion tank. Immersion tanks are a widely used method for location of leakages in complex assemblies and products. The part under test is pressurized with air while being submerged in a liquid, typically water. The operator looks for a stream of bubbles indicative of a leak. Proper selection and implementation of a production leak test method starts with an understanding of why the test is being performed, followed by establishing what the leak rate limit is, and finally a determination of how the leak test will be performed.
In this paper,an attempt is made to study the effect of noise and vibration on muffler. Noise pol... more In this paper,an attempt is made to study the effect of noise and vibration on muffler. Noise pollution created by engines becomes a vital concern in residential areas.The main source of vibration and noise in an engine are exhaust noises.This pointed towards need of reducing the same and hence it resulted in research on upsurge of muffler performance. The present paper discuss acoustic performance of a reactive muffler with side outlet using FEM and analytical approach. Here two loud method used for experimentation work and its results compared with analytical and FEM results as transimission loss point of view. Keywords: Mufflers, Reactive Mufflers, Noise, Vibration,transmission loss, FEM, two load method.
Planetary gear systems are widely used in various fields to their advantages of compactness, high... more Planetary gear systems are widely used in various fields to their advantages of compactness, high power-to-weight ratios, high efficiency, and so on. Helical (non-zero helix angle) planetary gear system is mostly used at low noise place and quieter applications like medical equipment, wind power plant compared to spur (zero helix angle) planetary system. The design of helical planetary gears system carried out by the consideration of influences of the whole drive train and the analysis of all relevant machine elements. The standardized calculations are decisive for the safe dimensioning of the machine elements with the consideration of realistic load assumptions. This system easily achieve high transmission ratio due to its size. This paper gives overview of design, advantages, disadvantages and applications of helical planetary gear system compared with spur planetary gear system. Here a recent development in helical planetary system is given based on regulating backlash between the gears and modifying the tooth surface. These are used in some examples like double helical planetary gear system and wind power plant. Keywords— Helical gear, beam strength, wear strength, low noise, double helical gear, wind power plant.
International Journal of Research in Engineering and Technology, 2014
A vibration exciter is a machine which produces mechanical vibratory motion to which the test obj... more A vibration exciter is a machine which produces mechanical vibratory motion to which the test object is subjected. This article presents design, construction, performance and testing of mechanical vibrations exciter, which have unbalanced mass to generate uniaxial vibrations. The exciter is designed to produce a given range of harmonic or time dependent excitation force and displacement through a given range of frequencies. The mechanical vibration exciter produces vibrations due to centrifugal force of rotating eccentric mass. The vibrations produced lie in the low frequency range. The construction of working device and its important parts are described here. The most important part of exciter is unbalanced mass attached with rotating disc of motor. Exciter has unbalanced mass at one end of disc, base frame, top plate as platform, springs and motor. This exciter is used for testing of welded parts, consolidation of concrete, concrete filling in mould. The obtained experimental results are in line with theoretical results.
Applied Mechanics and Materials, 2014
The depletion of ozone layer and green house effects are worldwide problem. Refrigerants are part... more The depletion of ozone layer and green house effects are worldwide problem. Refrigerants are part and source of depletion of ozone layer. As we using these Ecofriendly refrigerants then harm to ozone reduces. These are best option for recently running refrigerants. Eco-friendly refrigerant like hydroflurocarbons and hydrocarbons are replacing chlorofluorocarbons application.CFC is the most important member of CFC refrigerants. This paper, gives alternate to refrigerants that are causes ill effect on environment. Their performance with respect to recently used refrigerant compared. By this comparison benefits of Ecofriendly refrigerants discussed.
Applied Surface Science, 2006
The effect of the heat treatment on the corrosion behaviour of amorphous Fe85Cr5P6C3Si alloy in 0... more The effect of the heat treatment on the corrosion behaviour of amorphous Fe85Cr5P6C3Si alloy in 0.5M H2SO4 has been investigated using electrochemical techniques. Heat treatment was carried out at temperatures varying between 250 and 650°C at different times 30, 60, 120 and 240min. The evolution of crystallization processes after annealing was identified by differential thermal analysis (DTA) and by X-ray
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Papers by NITINKUMAR ANEKAR