Engineering in Kenya

# Mechanical Engineering

## Stiffness and Damping in Mechanical Design

Posted by on Jul 15, 2018 in Mechanical Engineering | 0 comments

Stiffness and Damping in Mechanical Design is an exceptional reference book and textbook. It can be purchased from Amazon.com, at a very competitive price. It has a coherent presentation of facts that are just relevant to the field of mechanical design. It has been authored by Eugene I. Rivin who has broad experience in the subject, having written other books in the same field.  This article sheds more light on the authorship, pricing and shipping of the textbook, in the first section.

The second part gives a detailed overview of the book from the stand point of clients, who have used it before, as well as the editors and publisher. The third section covers the specific product information that a serious buyer should be acquainted with prior to making a decision to buy the Stiffness and Damping in Mechanical Design textbook. Engineering in Kenya has more articles.

## Mechanical Engineering Formulae

Posted by on Jul 14, 2018 in Mechanical Engineering | 0 comments

There are many important Mechanical Engineering Formulae, considering the fact that physics as a subject is very wide and certain areas of physics draw connections from other areas of the same. The Formulas of Physics are categorized topically.

Generators in Electrical Engineering

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# Section A of Mechanical Engineering Formulae

Mechanical Engineering Formulae for power Power is work done per unit time. The unit of power in Mechanical Engineering Formulae is ‘watt’ or ‘horsepower’; 1 horsepower (hp) = 746 Watts

Power = work/ time; P = W/ t.

Since work is energy consumed over a certain distance, time is also a factor and thus power can also be defined with the confines of energy, i.e.

P = E/ t

Mechanical Engineering Formulae for work From the knowledge of the law of conservation of energy, it is obvious that energy is always conserved; it can be transformed thou.

The product of a force and the displacement from its original position is called work. If one is pushing a heavy block across a room, then the further one moves, the more the work one does in Mechanical Engineering Formulae.

I.e. work = force × distance moved

W = F × S

Energy on the other hand comes in many ways. Those that are discussed here are kinetic energy and potential energy. For normal kinetic energy;

Transitional kinetic energy = (mv2)/ 2

Rotational kinetic energy = (Iw 2)/ 2

For rotational kinetic energy in Mechanical Engineering Formulae, I is the moment of inertia of an object (it is easier to understand moment of inertia by considering it to be similar to mass in transitional kinetic energy) and w is the angular velocity of the object. For potential energy;

Gravitational potential energy = mgh, where g is the gravitational pull and h the height of the object from the ground in Mechanical Engineering Formulae.

Elastic potential energy = (k L2)/ 2, where k is spring constant and L the length of spring.

Section B in Formulas of Physics

## Mechanical Engineering Formulae for circular motion

Given that V is the tangential velocity of an object, a is the centripetal acceleration, F is the centripetal force acting on the object, r is the radius of the circle of rotation and m the mass of the object;

a = V2 / r

F = ma = mV2/r

Mechanical Engineering Formulae for Gravitation

Kepler’s Laws
These laws in Mechanical Engineering Formulae major on the behavior of space i.e. their movements and are as follows: -

• The orbit of any planet is elliptical and has the sun at one of its foci.
• Each planet’s movement is in such a way that the imaginary line joining it and the sun sweeps out equal areas at equal periods.
• The square of the period of revolution any planet about the sun is proportional to the cube of its mean distance from the sun in Mechanical Engineering Formulae.

Newton’s law of universal gravitation

Every particle in the universe attracts another with a force directly proportional to the product of their masses and inversely proportional to the square of their separation.                                                  Therefore, for Mechanical Engineering Formulae if F is the force, g is the acceleration due to gravity, G is the universal gravitational constant (6.67×10-11 N.m2/kg2), m is the mass and r is the distance between two objects, then;

F = (G m1 m2)/ r2

Acceleration due to gravity

Acceleration due to gravity differs with the position on the earth’s surface in Mechanical Engineering Formulae. Outside the earth, the acceleration due to gravity is the same as it would be if the entire mass of the earth were to be concentrated at its center. Given that the acceleration due to gravity is g’ at a radius r outside the earth, the earth’s radius being re and the acceleration due to gravity at the earth’s surface g;    g’ = (re2/ r2) × g
Inside the earth, the parameters are different. If r represents the radius of the point inside the earth, then;

g’ = (r/ r) × g

For the formulas above in Mechanical Engineering Formulae, the acceleration due to gravity g’ equals the acceleration due to gravity due to the earth’s surface g.

### Conclusion on Mechanical Engineering Formulae

The above Mechanical Engineering Formulae are well derived and an important part of engineering.

## Mechanic Pay

Posted by on Jul 13, 2018 in Mechanical Engineering | 0 comments

Mechanic Pay is wages paid to mechanical practitioners such as mechanical draughts men, mechanics and mechanical engineers. Mechanical engineers work with all kinds of machines. Most of these machines do transmit, produce or use power to operate. Their work concerns all the mechanism and the methods or processes involved in converting natural energy in to practicable use. Engineering in Kenya has more articles.

## Introduction to Designing of Mechanical Products

Posted by on Jul 12, 2018 in Mechanical Engineering | 0 comments

Designing of Mechanical Products is mainly done for commercial purposes. There are other factors that also facilitate the designing of the products, but all of them are centralized towards one major objective which is  profit maximization. The activities of designing emphasizes on making the product to be more unique, advancing its details and its complexity. The product is made in a way that it pleases the consumer starting from the installation process,the utilization of the item and in the  maintenance processes. Most of the companies explore the customer’s desires on a certain product, after understanding those unique requisites; a mechanical engineer is then given the responsibility of designing and manufacturing the product. Engineering in Kenya has more articles.

## Mechanical Apprenticeship

Posted by on Jul 11, 2018 in Mechanical Engineering | 0 comments

Mechanical Apprenticeship is a program and one of the ways that offers tremendous growth to a person’s mechanical career.  Mechanics are still the most demanded trade people all over the globe due to the constant increase in the number of car owners. As a result of the success of mechanics and the impact of their services; more people are nowadays interested in pursuing a career in automotive and motor mechanics.

In order to qualify becoming a mechanics expert, one needs first to become a mechanical apprentice. An apprentice mechanic is trainee who trains under the supervision of a skilled mechanic.

The first thing that should come to the mind of an aspiring mechanic is whether mechanical apprenticeship is the way to go. This is due to the great difference between this sort of learning and traditional classroom learning. Then get down to which mechanical career path to follow and the type of apprenticeship to chose, since there are varieties.

Congratulations on your interest in a mechanical career. The mechanics field is a sector that is on a high demand; therefore, the chances of becoming a mechanic and landing a job are more than superb. In this article you find information on mechanical apprenticeship in a broken down form and a step to step system to enable you to comprehend and set your goals straight.

# Learning In Mechanical Apprenticeship Program

Mechanical apprenticeship learning is very different from traditional classroom training and certifications. Therefore, before starting out, evaluate what type of learning environment you excel most in; know the idea of the differences between enrolling in mechanic school or a mechanic apprenticeship.

To be eligible for a mechanic apprenticeship, the apprentice must first complete the twelfth grade of secondary school. It is also important for one aspiring to be a mechanical apprentice to have reasonable grades in subjects such as; mathematics, science and English with special emphasis on  physics.

Given that most employers prefer mechanical apprenticeship applicants who drive, driving skills and clean driving records are vital to qualify as a mechanical novice.

The mechanical apprentice attends a program five days of the week; four of the days are used on-the-job training and the remaining day of classroom-set lectures. This one day classroom-set lectures, as part of the training and education of the aspiring apprentice mechanic, are spent in the further education (TAFE) and technical in college of choice.

Mechanical apprenticeship program takes four years. Within this duration, participants follow the schedule of the week as outlined above. Their on-the-job training will enable the apprentice to obtain experience working in different locations across property, in day, night, holiday and weekend shifts. Apprentices also are granted full benefits, such as health, vacation time, insurance and holiday pay, depending on where the apprenticeship is undertaken.

As a mechanical apprentice one is in for studying. Matters such as; learning how to draw up plans for new ideas using CAD (Computer Aided Design), solving problems, making new parts, installing, adjusting and testing instruments and machinery to ensure that they are running smoothly safely and also meeting the performance target.

An apprentice will also learn how to use different tools like hand tools, measuring equipments and power tools, how to work in a safe manner, manufacturing new equipments and maintenance of existing equipments. In addition, one is in a position to familiarize with the industry’s guidelines and regulations.

While coming to the end of learning and completion of mechanical apprenticeship, there are some qualifications obtained. Level 2 performing Engineering Operations, City and Guilds certificate in Engineering, level 2 Technical Certificate in Engineering and functional skills, personal thinking and learning skills and awareness of Employee Rights and responsibilities are some of the qualifications that are obtained though a mechanical apprenticeship program.

## The Role Played By Novices in Mechanical Apprenticeship

The role of a mechanical apprentice is simple. Basically all that is required is to follow instructions as given by the skilled mechanic. The novices’ job, as well, requires basically assisting the skilled mechanic with everything that may be needed.

This may involve things from repairing engines transmissions and installing air-conditioning systems to greasing torque wrenches and removing car tyres. The protégé and all the actions of an apprentice are charged to the skilled mechanic who trains and supervises him/her.

The novices in the mechanical apprenticeship are involved in several other duties. These include being involved in the manufacture of component parts, the installation and assembly of machinery and also the maintenance of equipment.

They are required to work with precision and accuracy, have a through and logical approach to work, be able to read and interpret complex diagrams and drawings, diagnose problems and find faults, as well as team spirit in order to work with other colleagues and ensure that work is carried out to the highest level of quality.

### The Importance of Mechanical Apprenticeship

Mechanical apprenticeship from all angles is like the graduates institution of auto mechanics. In Australia, it is a must for all aspiring apprentice mechanics to complete an apprenticeship in order to qualify themselves as full-pledged mechanics.

Only the best education and training is needed for mechanical apprentices so as to guarantee high quality services in the future for clients. Therefore, the apprentice should work under the auspices of a skilled mechanic who knows well the ins and the outs of motor mechanics in order to assure that they receive the proper training and education; because as it is said the only way possible to be great is to learn from the best of them all.

The mechanical apprentice needs to have the firsthand instructions and tips from the skilled mechanics to assist them get prepared for the mechanical certification and workshop license applications.

With every purchase of a motor vehicle that is made at the dealers, the future of mechanics as a lucrative profession gets brighter. Given that there are other possible ways to get yourself started in this career mechanical apprenticeship may be your way of getting you there and with chic.

And thus Mechanical Apprenticeship