Green Mechanic

Additive layer technology more commonly known as the 3D printing or layer by layer manufacturing technology is the most discussed and used (at small level) manufacturing method now a days.  As engineers are trying to manufacture more and more products through additive layer manufacturing so in this post we will try to select a an additive layer manufacturing process for engine cylinder block by working on following steps 1. Study the current Manufacturing Process 2. Select one additive layer manufacturing process  3. Study the new manufacturing process 4. Compare the present and new manufacturing processes 5. Conclude the result about the additive layer manufacturing of engine cylinder block 1.0 Introduction to 3D Printing of Engine Block 3D printing  work opposite to the conventional subtractive method was parts are manufacture by removing the material from a work piece. In additive layer manufacturing the parts are made by combining the successive layer of material on

Design a spring-loaded gun to shoot a projectile to your worst enemy. The conceptual design of this gun is shown on the next page. • It consists of a commercially available pipe (1),  • bottom cap (2)  • with an opening for the trigger pin, trigger pin (3),  • piston (4), • threaded rod (5)  • with a machined groove (6) to engage the trigger pin,  • nut (7),  • projectile (8),  • helical spring (9)  • and  aerodynamic projectile nose (10) of negligible weight.

Question No 1 Figure 1(a) shows a Geneva Mechanism whereby constant speed rotation of shaft O gives intermittent rotation of shaft P. The distance between shaft centers is 100 mm and the distance OA is 35 mm. For the position shown, draw proper space, velocity and acceleration diagrams for this mechanism, and find the angular velocity and acceleration of the slotted member.      (a) Geneva mechanism   (b) A simplified model   Solution From Engineering Mechanics Dynamics (Ch 5), the provided figure it is clear that the triangle OPA will governs angular velocity and angular acceleration of this mechanism output. The first derivative of Ө and Ф will give the angular velocity and second derivative will give the angular acceleration of the OA and Slotted member respectively. Using the law of sin to the make the equations and then taking derivative of them have given us the required angular velocity and acceleration of the slotted member. Reas

Title Study the effect of sluice gate on the flow of fluid in a rectangular channel Objectives 1. Learn the basic theory of flow under sluice gate in a rectangular channel 2. Using momentum function consideration to find force exerted on flow by the sluice gate 3. Calculate the power loss and energy head loss at jump suction using specific energy consideration Introduction According to Dr. Khalil M. ALASTAL (n.d) an open channel is like a duck with flowing fluid and whose surface is exposed to atmosphere. As the atmospheric pressure remains constant through the length of duct so the fluid flows only due to the difference in potential energy.  Sluice gate is the device used to control the flow of fluid and also for measurement of discharge rate in an open channel. It can move vertically up and down or rotate about a point to restrict the flow of water.  According to R. V. RAIKAR (n.d) fluid flowing in a channel always has the momentum function M a