Technically, mechanical engineering is the application of the principles and problem-solving techniques of engineering from design to manufacturing to the marketplace for any object. Mechanical engineers analyze their work using the principles of motion, energy, and force—ensuring that designs function safely, efficiently, and reliably, all at a competitive cost.

Mechanical engineers make a difference. That's because mechanical engineering careers center on creating technologies to meet human needs. Virtually every product or service in modern life has probably been touched in some way by a mechanical engineer to help humankind.

This includes solving today's problems and creating future solutions in health care, energy, transportation, world hunger, space exploration, climate change, and more.

Being ingrained in many challenges and innovations across many fields means a mechanical engineering education is versatile. To meet this broad demand, mechanical engineers may design a component, a machine, a system, or a process. This ranges from the macro to the micro, from the largest systems like cars and satellites to the smallest components like sensors and switches. Anything that needs to be manufactured—indeed, anything with moving parts—needs the expertise of a mechanical engineer.

Working in one of the broadest engineering fields, mechanical engineers design, analyse, test, develop and oversee the manufacture of power-producing machines like electric generators, engines, and turbines, as well as machines that use power, such as air-conditioning and refrigeration units, material handling systems such as conveyors, and more.

As modern professional engineers, mechanical engineers use computer systems to test designs and run virtual simulations to determine how a machine will work or integrate with connected systems, as well as computer aided design (CAD) and computer aided manufacturing (CAM) programs. Mechanical engineers also need to understand dynamics, mechanics, thermodynamics, structural analysis and electricity.

Mechanical engineering often overlaps into other engineering disciplines, including civil, chemical, industrial, and electrical engineering.
While the exact parameters of the role will change depending on where you work, a mechanical engineer will typically do tasks like:

• Analysing problems and mechanical device failures to find a cause and solution

• Designing or redesigning/adapting mechanical devices

• Develop and test mechanical prototypes, changing designs based on testing results

• Oversee manufacturing processes

Disciplines within the mechanical engineering field include but are not limited to:

Technology itself has also shaped how mechanical engineers work and the suite of tools has grown quite powerful in recent decades. Computer-aided engineering (CAE) is an umbrella term that covers everything from typical CAD techniques to computer-aided manufacturing to computer-aided engineering, involving finite element analysis (FEA) and computational fluid dynamics (CFD). These tools and others have further broadened the horizons of mechanical engineering.

Mechanical engineers work in a range of different places, according to the industry they are working in. Employment opportunities can be found almost anywhere that innovation is taking place, including within industries like aerospace, automotive, chemical, construction, consumer goods, defence, electronics, marine, metals and materials, pharmaceutical, rail, and utilities.

Mechanical engineers are also employed to work in a non-engineering capacity, both within engineering and elsewhere. These might include teaching, management, technical consulting and sales, publishing / science journalism, government, military, medicine, research, and more.

Most mechanical engineers work in an office setting although there may also be visits to sites to investigate problems or attend to pieces of equipment.

The first and most obvious benefit of becoming a mechanical engineer is the wide variety of employment opportunities that are available. In addition, new areas of employment growth are being developed for mechanical engineers with breakthroughs in areas such as acoustical engineering, biotechnology, composites, computational fluid dynamics, and nanotechnologies.

Along with the benefits of having a range of potential employment opportunities and fields of work to choose from, mechanical engineering can also offer a good salary.

While the exact salaries vary between companies and sectors according to the demand for engineers, mechanical engineering can be a well-paid career. As with most jobs, the wages increase as your career, expertise and experience develop.

The reliance on mechanical engineering in a range of industries means that there is always a demand for skilled professionals to fill mechanical engineering jobs. Sectors such as automotive, aerospace, biotechnology, electronics, energy, and manufacturing employ a high number of mechanical engineers but, as shown above, they can be found in a range of different sectors.

These examples of mechanical engineering roles will offer an insight into some of the types of work available:

Working to improve the performance of cars and other road and off-road vehicles, these engineers design new parts, modify existing components, troubleshoot problems and create solutions including for suspension systems, aerodynamics, new fuel types, engine performance and more.

Working on everything from buildings to aeroplanes and automobiles to trains and computer server rooms, these engineers are experts in creating, developing and maintaining environmental systems to manage temperature and humidity levels. These engineers also use computers, pressure gauges and other equipment to assess building energy losses.

These engineers develop, process and test new materials so that they meet the mechanical, electrical and chemical requirements for a range of industries. These engineers are integral to the development of new materials through the study of chemical properties, structures and the mechanical uses of a range of materials, including plastics, nanomaterials, ceramics and composites.

Mechanical engineering can be split according to discipline, with some offering overlap into different fields, Examples of disciplines include:

As your knowledge and experience increase the more avenues of work will open up to you, allowing you to earn more and change your employment sector more easily.

TThere is a wide range of skills and knowledge used by mechanical engineers to perform their duties. These include:

1. Statics and Kinematics: Statics research is concerned with how forces are transmitted to and through structures, including the dynamics, velocities, and acceleration forces of a system in motion. Once in motion, kinematics is used to measure how a mechanism behaves as it moves through different ranges of motion.
2. Materials: Materials science allows us to determine which materials are best for different applications. This includes testing the strength of the material under different conditions and loads as well as working out the material's properties. This knowledge is used across the construction, automotive, medical and other industries.
3. Thermodynamics: Thermodynamics examines how energy is converted to useable power and how much energy is lost in the process. This includes matters such as heat transfer, temperature data, and heat distribution through machinery.
4. Fluid Mechanics: Looking at properties such as drops in pressure and fluid flow rates, this is used in a range of applications including aerospace, where it can measure hose efficiencies and aerodynamic drag.
5. Manufacturing: Knowledge of manufacturing processes is important for improving efficiencies through the development and testing of equipment-scale processes. This knowledge also draws on other areas in the field of mechanical engineering, such as vibration analysis in manufacturing machinery, electrical efficiencies, and more.
6. Economics: An understanding of economics is important to ensure mechanical designs are practical in the real world, including affordability of materials and parts, life cycle costs, and more.

Alongside these examples, practical and scientific skills are softer skills that mechanical engineers may need to use, such as:

1. Problem Solving: This is at the very core of mechanical engineering, using your knowledge and experience to solve problems.
2. Creativity: Problem-solving may require a creative solution, but mechanical engineers can also get creative with new designs, developments and modifications.
3. Interpersonal Skills: Don’t overlook the importance of good interpersonal skills for mechanical engineers. Being able to work alongside - and communicate your ideas to - other people is also an important part of the job.

Mechanical engineers can be found working in a variety of industrial and non-industrial settings, making it an in-demand role for employers. While it could be argued that mechanical engineering goes back to antiquity with the creation of the first mechanical tools and engines, the discipline really pushed forwards with the first Industrial Revolution.

Modern mechanical engineers design and develop as well as build, test and maintain all sorts of mechanical devices, engines, tools and machines, often with the aid of computing technology and systems. Working in areas from aerospace and automotive to construction and medical, mechanical engineers play an important role in many industries, using their knowledge and experience to solve problems and innovate.