AN INVESTIGATION ON ADVANCED WELDING TECHNIQUES

This paper deals with advanced welding techniques with use of friction stir welding. This type of welding carried out by aluminium 6063 alloy practically. When compared to conventional welding techniques it is not possible to weld, such type of aluminium alloy, because of some limitations. Friction stir welding is one such non-melting joining technology that has produced structural joints superior to conventional arc welds in aluminium. Friction stir welding can be conducted on a milling machine. While doing the experiment with change in variation of rotational speed and feed rate, with that experiment we chose five trials. In between five trials, the trials from one to four gives as different types of welds obtained. At the end of fifth trial, successful weld was obtained with very good surface finish on both ends and better tensile strength at types of welds obtained. At the end of fifth trial , successful weld was obtained with very good surface finish on both ends and better tensile strength at 1400rpm and 22.4 mm/rev. Tests were also performed to determine the susceptibility of FSW aluminium 6063 alloy to corrosion. The various test performed on the welded specimen are as follows tensile test and microstructure study. During tensile test, the maximum tensile strength obtained from two specimens was approximately 75% of the parent metal. Whereas the microstructure analysis is carried out to decrease the flow of material and change in the microstructure and grain size of measurement. By using this factor we present the paper that FRICTION STIR WELDING as a advanced welding techniques

AN INVESTIGATION ON DESIGN AND DEVELOPMENT OF ARECANUT TREE CLIMBER

The people in rural areas of Karnataka and Kerala mainly depend on agriculture for their livelihood. The main crops grown are Arecanut and coconut. For harvesting the nuts, and for spraying and applying insecticides on the crown, skilled labourers have to climb manually up the tree. Such a process looks easy, in reality it is a laborious and dangerous task. It requires skill to climb a arecanut tree. Skilled arecanut tree climbers have become scarce and farmers are finding it difficult to harvest the nuts. There are many equipments/ machines in the market to help the farmers in this regard. But they are not successful as the input for them is muscular power of the labour and it requires a person to physically climb the tree. There is no 100% safe arecanut harvesting device currently in the market. There is a need to invent a machine to address both efficiency and safety. The design of the device has to be simple enough for villagers to operate, yet work efficiently to appeal to the majority. Here we are designing and fabricating motorized arecanut tree climber. The tree climber has a base on which the drive system is mounted. The power from the motor to the rollers is transmitted by using sprocket and chain drive. To obtain the required speed of the rollers a reduction gear box is used in between the motor and the rollers. The machine is placed around the tree and clamped to it using a swivel opening on one side of the base. Due to the weight of the motor, gear box and some extra mass concentrated on one end of the base the machine locks itself to the tree. Now the motor is switched ON to drive the rollers. When the rollers rotate gripping the tree, the whole setup is lifted along the length of the tree. After reaching the required height the motor is switched OFF. By having suitable auxiliary equipments for spraying pesticides, plucking the nuts on the setup and suitable controlling methods for those equipments the required job can be performed. Once the job is done the motor is made to rotate in the reverse direction to descend down the tree

DESIGN AND ANALYSIS OF WHEEL RIM WITH MAGNESIUM ALLOYS (ZK60A) BY USING SOLIDWORKS AND FINITE ELEMENT METHOD

A wheel rim is a vital part of any automobile, which has to withstand to a high stress. The stress on rim may cause to bending and torsional loads. The design and manufacturing process of rim is important from point of view of long life, high stress withstanding capacity, need of reduction in weight and the material used. There is huge competition amongst the manufacturers due to these factors due to cost, performance, and weight. Due to this industries are always searching for components with lighter weight, low cost, and high strength, to increase performance. The lighter weight of the rim and wheels improves the handling, grip and results in reduction of overall mass of vehicle which again helps in less consumption of fuel. Nowadays cars have been using steel alloy for its wheel rim. On moving with advancements the magnesium alloy can be used for the wheel rim .In this part structural analysis of wheel rim with magnesium alloy is done and compared the results with steel alloy. As magnesium alloy (ZK60A) matches the target of lighter wheel and having many benefits compared to other metals, it can compete with exists