International Journal of Mechanical Engineering

1-18

Authors: Chaoufi Ali & Benabdelkader Boufeldja

The purpose of this study is to analyze a case of failure of composite materials that are used in the automotive industry. This work has allowed us to identify the following points: Theoretical and practical information that concern composite materials, in order to be able to produce mechanical parts. On the other hand; to acquire the static characteristics of rupture of these materials We apply to these two materials three static loads, which begin with 1000N and end with 3500N, where we notice that the first material ABS is more resistant than the other one

31-36

Authors: Fajri Vidian & Ferdi Kurniawan

Coal gasification in Indonesia is currently being promoted to meet the needs of electrical energy. Early prediction of the gas composition resulting from the gasification process is needed in development of gasification system. In this study, a simulation of the gasification process of low-rank coal was carried out using cycle tempo. The simulation aims to predict the gas composition of low-rank coal gasification by varying the air-fuel ratio. The variations of the air-fuel ratio were in between of 1.25 to 1.5. The simulation results present the maximum fraction of combustible gas of CO, H2, and CH4 was 21.25 %; 19.31 %, and 3.15 % respectively. The difference between simulation and experimental results has a similar trend with the literature.

1-10

Authors: P. V. K. Murthy, M. V. S. Murali Krishna & P. Sekhar Babu

There is lot of demand for alternative fuels as fossil fuels are expending day by day. Oils from seeds of plants are acceptable for diesel fuel, as there is no necessary for swapping engine model. But snag related to oils from seeds of plants like glutinous consistency and low flammable characteristics led to change of oils from seeds of the plant into biodiesel by the process known as esterification. However, biodiesel has moderate viscosity which calls for low heat rejection o bTDC with respect to normal engine operated by diesel at 27 o bTDC and a pressure of injection of 190 bars.

23-38

Authors: Sunday Paul Ajibola & Ojoye Babatunde

The use of robots has increased exponentially in the 21 st century due to improvement in the design of drives, actuators and control electronics. Bio-inspired robots are robots which use electro-mechanical motion to achieve near natural movement of the animal they represent. Stealth and energy efficiency are amongst qualities obtainable from nature inspired movements. The design and construction of a robot fish is an attempt into bio-mimicry. This project entails the use of conventional, cheap and off the shelf mechanical mechanisms to achieve the anguilliform motion of a typical African Catfish. A geared motor driven crank and telescopic connecting rod mechanism is used to achieve the undulating motion of the tail. This created the propulsion needed to achieve the surging motion. The pectoral The fish was able to achieve a speed of 0.1m/s and submerged in 4 secs during the tests. The test was done in nonflowing water. The fin movement, buoyancy variation and propulsion were achieved during the test.

51-66

Authors: Aniket Nagesh Colvalkar, Sachin S. Pawar & Bhumeshwar K. Patle

Pipe inspection is of great importance for assessing the integrity of the pipe in various pipeline industries. Pipe inspection eliminates human intervention from hazardous environments and accidents. There are multiple pipe inspection methods like X-ray, Magnetic acoustic testing, eddy current testing, and visual inspection, but pipe inspection using a robotic system is a promising one. A pipe inspection robot is usually fitted with a camera and other sensors that carry out a check. Due to geometrical changes of pipe-like joints, couplings, T sections, reducers, valves, while designing pipe inspection robots, various factors such as restricted manoeuvrability, complex designing, steering designing, adhesive forces during vertical motion have to be considered. This makes it necessary for proper designing and selection of mechanisms. Therefore, this paper provides a systematic review of various models that are available for pipe inspection. This paper will classify pipe inspection robots briefly into outer pipe inspection and inner pipe inspection robots.

1-10

Authors: Suthraye Sai Gaurav, G. Devendar & A.Chennakesava Reddy

In this present work, a statistical approach based on Taguchi techniques and finite element analysis were adopted to determine degree of each parameter that is punch velocity, coefficient of friction, temperature and blank thickness on the formability of cups from Nickel 201 using warm deep drawing process. The results obtained from finite element software namely DEFORM were validated experimentally. The blank thickness, temperature and coefficient of friction have been found influencing the quality of the cup drawn from Nickel201.

21-28

Authors: B. Sudarshan, K. Divyalakshmi & Y. Bhaskar Reddy

Assembly injection moulding is an advanced and highly integrative technique for producing mechatronic systems, with a broad range of choices. This is because it incorporates several technological functions in one manufacturing process, such as shells and close up of many components completed of various materials. Combining different materials, in particular, is both a significant technical advantage and a significant challenge. The tightening of the system is a big objective. This paper provides a model to help researchers better understand how leakage happens and the processes that underpin it, such as contract age and war page behaviors that are affected by material, repetition, and design. It will also serve as the base for research into the phenomenon and the development of techniques to boost the media tightness of assembly moulding systems. The compound interface and intereffects present on thermal and structural shrinkages, the elements' war page, and the adhesion between them are all very important

35-48

Authors: A. M. Sehsah, M. M. Ghanem, H. A. Abdel-Aleem & M. El-Shennawy

In this study, effect of welding parameters on microstructure and mechanical properties of dissimilar austenitic AISI304 stainless steel/ductile cast iron DCI A536 joints was investigated. Plates of ductile cast iron (DCI) with 6mm thickness were manufactured, heat treated and inspected at CMRDI casting laboratory. The main welding parameters studied in this work are welding technique (with and without buttering layer at DCI side) and type of filling electrodes. Electrode types applied for this dissimilar joint included Inconel 182 (ENiCrFe-3), cast-iron- Ni-Fe-electrode (ENiFe-CI), and stainless-steel electrodes E309L. Microstructure of welded joints was investigated using optical microscope and scanning electron microscope (SEM) equipped with EDX instrument. Mechanical properties of welded joints were evaluated by hardness test, tensile and Charpy notch impact tests. In general, when using buttering technique at DCI side, it acts as obstacle layer to minimize carbon migration from DCI side to the weld and reduce formation of carbides in weld metal. The sample welded using buttering layer (ER Cu Al-A2) and filling groove with electrode ENiCrFe-3 had better mechanical properties compared with same sample without buttering technique.

57-66

Authors: Arfa S Sobh, Khaled, H. M. A. Hussein, Ali Abd El-Aty & M. A. Bhlola

The needs of lighter automotive components have enhanced the application of thin wall casting technology on ductile iron which is known as Thin Wall Ductile Iron (TWDI). In the current research, TWDI was produced using vortex technique with different thicknesses of 5, 10 and 15mm. Vortex technique is a modern method for producing high quality ductile iron. This aims at producing TWDI with high nodularity and high mechanical properties. The shape of cast samples had a dimension of 154mm x 120mm for each plate with different thicknesses of 5, 10 and 15mm. They cut into pieces for determining the mechanical properties such as tensile, hardness and wear resistance as well as microstructures of these casted alloys. The results show that the microstructures of the three casted samples were composed of pearlite, ferrite and nodular graphite. Maximum hardness of 300 HB was obtained for 5mm thickness sample and the minimum one of 250 HB was for 15mm thickness sample. Maximum tensile strength and wear resistance were obtained for 5mm thickness sample due to existing of high amount of pearlite and the minimum values were resulted for 15 mm thickness sample. Therefore, TWDI can be considered as substitutional material of steel sheets and can produce spare parts which save cost and 10% in weight as compared to steels. [Copyright information to be updated in production process]

1-12

Authors: Tesfaye Adisu & Abaysew Ayele

Distributive Simultaneous Localizations and Mapping (SLAM) helps for multiple agents for exploring and building a global map predicting their locations. The challenge is difficult to identify local map overlaps these agents, especially when their initial relative positions are unknown. So, to address this problem, a collaborative (AR) frame-work with liberally moving agents was used without know-how of their initial comparative positions. Each agent in the framework used a camera only as the input device for its SLAM route.

25-32

Authors: Lenny Iryani, Fithri N. P, Andi M. Kadir & Bambang Irawan

In this work, the strength of the spar I beam profile of the UAV wing structure were analyzed by using three point bend testing. The three point bend testing were conducted by using controlled load cell of Newton NT-502A series with maximum capacity of 2000 kg. The spar I beam profilewere made from composite material of carbon fiber prepreg. The thickness of the component were about 0.25 mm and 0.5 mm. The maximum load of the three point bend testing of the spar I beam profile gives value of 11 kN. It was shown that the strength of the spar I beam profile gives good efficiencies compared to the weight itself.

1-10

Authors: Khaled Sinary Zohry & Mahmoud M Abbas

Marine industry had many challenges before, in 2020 one of these biggest challenges will come to the surface, (IMO) new regulations of NOx & SOx emissions substances from combustion of marine fuels will be monitored and restricted in respect of the atmosphere. The aim of this paper is to study the performance of the marine main diesel engine at various load conditions and emissions percentages at each load condition, to ensure they remain with-in environmentally safe/permissible levels, the main diesel engine variable injection timing (VIT) is set up so that there is no change in injection timing at low loads (40%MCR), this is to avoid frequent changes of pump lead during maneuvering, the start of injection advanced above 40% load. Therefore, in this study the main diesel engine parameters considered are from 40% to 84% load rating. This research study was carried out using a simulator the TRANSA Tech Sim/ERS 5000 with MAN B&W 6S50MC-C diesel engine product tanker as case study. Therefore, the operation of the ships main diesel engine performance does not take into account conditions of its operating environment in the real sea conditions. Even though the TRANSA Tech Sim/ERS 5000 could simulate some of the conditions experienced at sea due to time constraint, this research study was carried out assuming perfect sea condition conditions such as high tides, wind resistance against and along the ships sailing path, hull fouling and hull deformation resistance