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# Manufacturing Engineering

Manufacturing engineering is a discipline of engineering that looks at the different manufacturing practices and the research and development of systems, processes, machines, tools and equipment. This field deals with machines that turn raw materials to a new product. It also looks at the integration of different facilities and systems for producing quality products by applying the principles of physics.

Manufacturing engineers develop and create physical artifacts, production processes and technology. The manufacturing engineering discipline is integrated with mechanical engineering, industrial engineering, electrical engineering, electronic engineering, computer science, materials management and operations management. Manufacturing engineering emerged in the mid-20th century when industrialized countries introduced advanced statistical methods of quality control and industrial robots on the factory floor.

Modern manufacturing engineering includes all intermediate processes required for the production and integration of a product’s components. Industries use fabrication to descript the following processes; automation and robotics. Automation refers to the application of automation to produce goods in a factory. Robotics is the application of mechatronics and automation to create robots which are used in manufacturing to perform tasks that are dangerous, unpleasant or repetitive.

## Categories within Manufacturing Engineering

### Robotics

Postings: 7

Robotics is the branch of science that deals with the design, construction, operation, and application of robots.

### Pillars of TPS

List two pillars of Toyota Production System?

### 1D and 3D Conduction Equations

Starting from the energy equation and using the one-dimensional heat conduction derivation as an example, derive the three dimensional heat conduction equation in rectangular coordinates. Assume constant thermal conductivity.

### Oil velocity in a hydraulic system

A hydraulic cylinder is 100mm diameter and is fed by a pipe 15mm in diameter. If the piston in the cylinder moves forward at a rate of 0.2ms^1, calculate the velocity of the oil in the pipe line.

### Heat Transfer: Heat Loss and Temperatures

The base of a 2 cm X 3 cm X 20 cm long rectangular rod is kept at 175 degrees Celsius by electrically generated heat. This is known as a straight fin or longitudinal fin. The ambient air surrounding this fin is at 28 degrees Celsius and h=10 W/m^2-C. There is negligible heat loss at the tip of the rod. 1. What is the tempe

### Laplace heat transfer equations for thermocouple

See the following attachment and answer questions related to Laplace equation for temperature transfer, transient response, and graph plotting. All questions outline in attachments for better view of figure and equations. Text is mentioned below. Questions 4 A thermocouple is a device commonly used to measure the temperat

### Runge-Kutta Method

Problem 1 1. Write an Matlab m-file to solve this problem with Runge-Kutta method. Solve the concentration of T1 and T2 (or salt content) as function of time (up to 100 minutes). Both T1 and T2 are mixing tanks (assume immediate mixing). T1's capacity is 100 gallon and T2's capacity is 200 gallon. Initially, T1 contains f

### Suspension and Distance of Compression

The following refers to the equation given in the attached file. Please reference file to understand question fully. A cars suspension after leaving a sharp ramp on the road, where x is the distance of compression of the suspension unit in metres. The mass M is 3000kg is the total load carried by the car. The spring's stiffn

### Temperature Effect on Materials

(i) A hollow cylinder of aluminium 1 m long with a 40 mm outside diameter is at a temperature of 20 °C. What is the change in length and circumference of the cylinder when it is cooled to â?'25 °C? (Note: the thermal co-efficient of expansion of aluminium is 24 Ã? 10â?'6 Kâ?'1.) (ii) Assuming that the cylinder

A metal bar with a Young's modulus of 70 GPa and Poisson's ratio 0.3 is subjected to a uniaxial tensile load of 60 kN, as shown in FIGURE 1. Assume the material is in the elastic limit under this load. Determine the longitudinal deformation, transverse deformation and the change in volume. See the attached file.

### Net potential energy between ions

The net potential energy EN between two adjacent ions is sometimes represented by the expression: EN = -(C/r) + D exp(-r/p) in which r is the interionic separation and C, D, and p are constants whose values depend on the specific material. (a) Derive an expression for the bounding energy Eo in terms of the equilibrium int

### Sound Power Measurement in Semi-Anechoic Chamber

The attached file shows a typical sound power measurement setup in a semi-anechoic chamber. (1) Show that the rigid surface condition is satisfied automatically by considering an image source as shown in the attached file. (2) Using the monopole pressure equation, plot the pressure amplitude at points along the circle. (3) Compa

### Diesel Cycle

5.3 Diesel Cycle A diesel engine has an inlet at 95 kPa, 300 K and a compression ratio of 20:1. The combustion releases 1300 kJ/kg. Find (a) the temperature after combustion using cold air properties; (b) the cycle efficiency and (c) mean effective pressure for the cycle.

### Determine Maximum Bending Moment: Example Problem

The bending moment M at position x m from the end of a simply supported beam of length L m carrying a uniformly distributed load of w Kn m-1 is given by: M = w/2 L (L-x)- w/2 (L - x)^2 Show using the above expression that the maximum bending moment occurs at the mid point of the beam and determine its value in terms of w

### Temperature and density of air under adiabatic compression

Air is going through a compressor the air is being adiabatically compressed from atmospheric pressure to a pressure of 0.482 bar above atmosheric pressure (1.482 bar). The initial temperature is 20 degrees Celsius. the effect on temperature and density is required. please contact me if you require any more information. Univer

### Steam Turbine Output Power

The mass rate of flow into a steam turbine is 4500 kg/h and the heat transfer from the turbine is 8.8 kW. The following data are known for the steam entering and leaving the turbine. Inlet Exit Pressure 20 bar 1 bar

### Kinetics of Particles: Work and Energy

Two blocks A and B, of mass 5 kg and 6kg respectively, are connected by a cord which passes over pulleys as shown. A collar C, of mass 4kg, is placed on block and the system is released from rest. After the blocks have moved through 0.9m, collar C is removed and the blocks continue to move. Determine the velocity of block A jus

### Determining Distance to Objects

Determine the distance d to which the painter of weight, 80Kg, can climb without causing the 4 m ladder to slip at its lower end A. The top of the 20Kg ladder has a small roller, and at the ground the coefficient of static friction is 0.25 (see attachment).

### AIR/FUEL RATIO BY MASS

ETHYL ALCOHOL HAS THE CHEMICAL FORMULA C2H6O. CALCULATE THE STOICHIOMETRIC AIR/FUEL RATIO BY MASS AND THE CORRESPONDING WET GRAVIMETRIC ANALYSIS OF THE PRODUCTS OF COMBUSTION.

### Temperature in the Tank

A rigid tank contains 5 kg of an ideal gas at atm and 40° C. Now valve is open, and half of mass of the gas is allowed to escape. If the final pressure in the tank is 1.5 atm, what is the final temperature in the tank?

### Combined Angular / Linear Motion

In reference to the attached file: A loaded coaltruck is parked at the top of an inclined track. it breaks free and rolls down the incline accelerating uniformly where it collides with another stationary coal truck parked at the beginning of a 1 km stretch of horizontal track. the pair lock together and continue along the tra

### Mechanics of Composite Materials: Orthotropic Lamina

Question 4: An orthotropic lamina with a fiber orientation of 45 degrees is subjected to stresses sigma_x = 0, sigma_y > 0, and tau_xy. Determine the failure envelope and the non-failure region in the sigma_y - tau_xy plane using Tsai-Hill theory for the following cases: i) tau_xy > 0 ii) tau_xy < 0 Take y axis as sig

### Mechanics of composite materials: "orthotropic lamina"

An orthotropic lamina has fibres oriented at 45*. It is subjected to strains... Determine the maximum and minimum values that Ey can take such that the lamina does not fail according to Maximum Stress Throry. Please see attached.

### Mechanics of Composite Materials

1. A glass/epoxy laminate with a fiber orientation of 30 degrees is subjected to a shear stress t_xy (or tau_xy) which can be positive or negative. a) Determine the maximum positive and negative shear stresses that can be applied to the laminate using Tsai-Hill failure criterion. b) Determine the reserve factors for t_xy =

### Introduction to Manufaturing Process

3) A gear blank has been successfully hot forged on a mechanical press in a closed die. At the beginning of a new production run, the die burst. What is the likely cause? (ISBN 0-07116911-3) (chapter 9)

### Energy Transfer in Thermal and Fluid Systems

Problem: An oven door consists of a layer of asbestos sandwiched between a layer of steel on the inner surface and a layer of wood on the outer face. The thickness of the steel is 20mm and that of the wood 12mm. The adhesive used to bond the wood to the asbestos has a maximum safe working temperature of 93 degrees C(when bonded

### Effective Matching of Surface Roughness

Concerning the effective matching of surface roughness using a lathe, I have been asked to quantify Ra = C1* s^C2 v^C3 Re^C4, where Ra is surface roughness, s is feedrate, v is cutting velocity and Re is the nose radius of the tool. I had performed an experiment to get the values of Ra for combinations of different v, s and

### Finding the volume of hydrogen

A hydrogen filled balloon of the type used in cosmic ray studies is to be expanded to its full size which is a 100-ft diameter sphere, without stress in the wall at an altitude of 150,000 ft. If the pressure and temperature at this altitude are 0.14 psia and -67 degrees F respectively, Find the volume of hydrogen at 14.7 psia

### Thick Cylinders

1. A steel cylinder with an internal radius of 50mm is designed to carry a maximum stress of 400 MPs. It is subjected to an internal pressure of 80 MPs. (i) Determine the required wall thickness. (ii) The outer radius of this cylinder is chosen as 70 mm and the internal pressure is increased to 160 MPa. The cylinder is str

### Shearing Stress

Two bars, one having a circular section of radius b, the other an elliptic section with semiaxes a,b. For equal angles of twist, which bar experiences the larger shearing stress? For equal allowable shearing stresses, which one resists a larger twisting moment?

### Determining initial acceleration of a projectile

How can I proceed to solve the problem below? The problem: A projectile enters a resisting medium at x = 0 with an initial velocity Vo = 900 ft/s and travels 4in. before coming to rest. Assuming that the velocity of the projectile was defined by the relation V = Vo - kx, where V is expressed in ft/s and x in feet, determine