What Is Mechanical Engineering?

What do mechanical engineers do?

Mechanical engineers have an enormous range of opportunity and their education mirrors this breadth of subjects. Students concentrate on one area while strengthening analytical and problem-solving skills applicable to any engineering situation. Mechanical engineers work on a wide range of projects, from designing engines, power plants, and robots to developing heating and cooling systems, manufacturing processes, and even nanotechnology.

Mechanical Engineering Disciplines

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.

What careers are there in mechanical engineering?

Society depends on mechanical engineering. The need for this expertise is great in so many fields, and as such, there is no real limit for the freshly minted mechanical engineer. Jobs are always in demand, particularly in the automotive, aerospace, electronics, biotechnology, and energy industries.

Mechanical Engineering Job Types

Here are a handful of mechanical engineering fields.

Mechanical engineers play vital roles in the aerospace industry, contributing to various aspects of aircraft and spacecraft design, development, and maintenance.

In statics, research focuses on how forces are transmitted to and throughout a structure. Once a system is in motion, mechanical engineers look at dynamics, or what velocities, accelerations and resulting forces come into play. Kinematics then examines how a mechanism behaves as it moves through its range of motion.

Materials science delves into determining the best materials for different applications. A part of that is materials strength—testing support loads, stiffness, brittleness and other properties—which is essential for many construction, automobile, and medical materials.

How energy gets converted into useful power is the heart of thermodynamics, as well as determining what energy is lost in the process. One specific kind of energy, heat transfer, is crucial in many applications and requires gathering and analyzing temperature data and distributions.

Fluid mechanics, which also has a variety of applications, looks at many properties including pressure drops from fluid flow and aerodynamic drag forces.

Manufacturing is an important step in mechanical engineering. Within the field, researchers investigate the best processes to make manufacturing more efficient. Laboratory methods focus on improving how to measure both thermal and mechanical engineering products and processes. Likewise, machine design develops equipment-scale processes while electrical engineering focuses on circuitry. All this equipment produces vibrations, another field of mechanical engineering, in which researchers study how to predict and control vibrations.

Engineering economics makes mechanical designs relevant and usable in the real world by estimating manufacturing and life cycle costs of materials, designs, and other engineered products.

What skills do mechanical engineers need?

The essence of engineering is problem solving. With this at its core, mechanical engineering also requires applied creativity—a hands on understanding of the work involved—along with strong interpersonal skills like networking, leadership, and conflict management. Creating a product is only part of the equation; knowing how to work with people, ideas, data, and economics fully makes a mechanical engineer.

Here are ten essential skills for mechanical engineers to possess:

1. Technical Knowledge: A strong foundation in physics, mathematics, and mechanics is crucial. Understanding principles like thermodynamics, fluid mechanics, materials science, and structural analysis forms the backbone of mechanical engineering.

2. Problem-Solving: Mechanical engineers often encounter complex problems that require analytical thinking and creative solutions. The ability to break down problems and develop innovative solutions is highly valuable.

3. Design and CAD: Proficiency in computer-aided design (CAD) software is essential for creating, analyzing, and optimizing designs. Knowledge of software like SolidWorks, AutoCAD, or similar programs is valuable.

4. Critical Thinking: Assessing risks, evaluating different design options, and making decisions based on data and analysis are critical skills for mechanical engineers.

5. Communication: Being able to communicate technical information clearly, whether in written reports, presentations, or discussions with team members or clients, is vital for success in this field.

6. Project Management: Managing projects, including budgeting, scheduling, and coordinating with teams, suppliers, and clients, is often part of a mechanical engineer's role.

7. Hands-on Application: Practical skills in building prototypes, conducting experiments, and testing designs are valuable. Having a good understanding of manufacturing processes and techniques is beneficial.

8. Continuous Learning/Improvement: Given the rapid advancements in technology and techniques, a willingness to learn and adapt to new tools, methodologies, and industry trends is crucial for staying competitive.

9. Teamwork: Mechanical engineers often work in multidisciplinary teams. The ability to collaborate effectively with professionals from various backgrounds is essential.

10. Ethical Standards: Upholding ethical standards and understanding the broader impact of engineering solutions on society and the environment is increasingly important for modern mechanical engineers.

Developing a balance of technical expertise, problem-solving capabilities, and soft skills is key to becoming a successful mechanical engineer.

What tasks do mechanical engineers do?

Careers in mechanical engineering call for a variety of tasks.

How much do mechanical engineers earn?

Like careers in many other engineering fields, mechanical engineers are well paid. Compared to other fields, mechanical engineers earn well above average throughout each stage of their careers. According to the U.S. Bureau of Labor Statistics, the mean salary for a mechanical engineer is $105,220, with the top ten percent earning close to $157,470.

Mechanical Engineering Salaries

Mean Entry-Level Salary (Payscale)	Mean Annual Salary (BLS)	Top 10 Percent (BLS)
$69,148	$105,220	$157,470
Figures from payscale.com, accessed May 2024. Figures from U.S. Bureau of Labor Statistics (BLS), dated May 2023.

See additional engineering salary information.

The future of mechanical engineering

Breakthroughs in materials and analytical tools have opened new frontiers for mechanical engineers. Nanotechnology, biotechnology, composites, computational fluid dynamics (CFD), and acoustical engineering have all expanded the mechanical engineering toolbox.

Nanotechnology allows for the engineering of materials on the smallest of scales. With the ability to design and manufacture down to the elemental level, the possibilities for objects grows immensely. Composites are another area where the manipulation of materials allows for new manufacturing opportunities. By combining materials with different characteristics in innovative ways, the best of each material can be employed and new solutions found. CFD gives mechanical engineers the opportunity to study complex fluid flows analyzed with algorithms. This allows for the modeling of situations that would previously have been impossible. Acoustical engineering examines vibration and sound, providing the opportunity to reduce noise in devices and increase efficiency in everything from biotechnology to architecture.