III. Mechanical engineering#

III.1. Mechanical engineering#

What is mechanical engineering? Mechanical engineering covers a broad field, ranging from the design of individual components to advanced machines, manufacturing systems, and robotic platforms. That breadth makes mechanical engineering difficult to define in one sentence. The Dutch dictionary Van Dale gives the following definition: “Mechanical engineering (v.) skill of the design, manufacturing and operation of machines.” But mechanical engineering is more than that.

In the TU/e information brochure, mechanical engineering is not defined in one sentence, but described as follows: “A mechanical engineer devises, designs and realizes new products and processes but also improves and optimizes existing technologies.” An important part of this is turning designs into physical reality: mechanical engineers must understand how products can be manufactured, assembled, tested, automated, and produced reliably at the required quality and scale.

It is easier to give several examples of applications in which mechanical engineering has played an important role, both in conceiving, designing, producing, and improving them.

Mechanical engineering has played a crucial role in numerous applications across various industries. Here are some examples:

  1. Semiconductor manufacturing equipment: Mechanical engineers contribute to the design and production of semiconductor manufacturing equipment used in the fabrication of computer chips and integrated circuits. This includes equipment for photolithography, etching, deposition, and wafer handling. Precision engineering is essential to ensure the accuracy and reliability of these high-tech systems.

  2. Precision optics and laser systems: Mechanical engineers are involved in the design and construction of precision optics and laser systems used in applications such as telecommunications, laser cutting, medical imaging, and scientific research. They work on the development of optical components, laser resonators, and beam delivery systems to achieve precise control and performance.

  3. Advanced imaging systems: Mechanical engineers play a crucial role in the development of advanced imaging systems used in medical imaging, microscopy, satellite imaging, and security screening. They contribute to the design of optical systems, imaging sensors, precision mechanical stages, thermal management, and system integration needed to capture high-resolution images with accuracy and speed.

  4. Renewable energy technologies: Mechanical engineers contribute to the design and optimization of high-tech renewable energy technologies such as wind turbines, solar panels, and tidal energy systems. They work on aerodynamic design, structural analysis, and power conversion and control to improve energy capture efficiency and reliability in renewable energy systems.

  5. Consumer electronics and medical devices: Mechanical engineers play a crucial role in the design and production of consumer electronics such as smartphones, laptops, and home appliances. They focus on product miniaturization, thermal management, and structural integrity to create compact and durable devices. Mechanical engineers are involved in the design and development of various medical devices, including prosthetics, implants, surgical instruments, and diagnostic equipment. They work closely with healthcare professionals to ensure the safety, efficacy, and usability of medical devices.

  6. Smart materials and adaptive structures: Mechanical engineers contribute to the design and development of smart materials and adaptive structures that can change their properties in response to external stimuli such as temperature, pressure, or electromagnetic fields. Examples include shape memory alloys, piezoelectric materials, and magnetostrictive materials used in actuators, sensors, and adaptive optics systems.

  7. Microfluidic systems: Mechanical engineers contribute to the design and development of microfluidic systems, which manipulate fluids at the microscale for applications in biology, chemistry, and medicine. Microfluidic devices are used for lab-on-a-chip systems, DNA analysis, cell sorting, drug delivery, and point-of-care diagnostics. Mechanical engineering principles are applied to design microchannels, valves, pumps, and mixers, as well as to optimize fluid flow and control.

  8. Manufacturing and production technology: Manufacturing is one of the central pillars of mechanical engineering. A successful design must not only work in theory, but also be manufacturable, affordable, repeatable, and robust. Mechanical engineers develop and improve manufacturing processes such as machining, forming, casting, additive manufacturing, joining, and assembly. They also design production equipment, tooling, quality-control methods, and automated production lines. In high-tech industry, manufacturing engineering is closely connected to precision engineering, metrology, digital production, and process optimization.

  9. Advanced robotics and automation: Advanced robotic systems bring together many core areas of mechanical engineering. Mechanical engineers design lightweight and stiff structures, joints, transmissions, actuators, end effectors, thermal systems, and precision mechanisms, while also working closely with sensing, control, mechatronics, and software. Applications include industrial robots, autonomous warehouse systems, surgical robots, inspection systems, collaborative robots, and high-precision robotic platforms for semiconductor manufacturing. Robotics is therefore not an isolated specialization: it is an important example of how mechanics, dynamics, control, manufacturing, and system design come together in one engineering system.

These examples highlight the diverse range of applications where mechanical engineering expertise is essential. Two themes recur throughout almost all of them: manufacturing, because engineered products must ultimately be made and reproduced reliably, and advanced robotics and automation, because increasingly complex machines must sense, move, interact with their environment, and operate with high precision and autonomy.

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Fig. 2 3D Printing (source: Spiceworks), Biomechanics (source: Arm Dynamics), HVAC Systems & Smart Buildings (source: attune), Lithography (source: ASML), Renewable Energy Systems (source: DutchReview), Robotic Automation (source: JR Automation).#

This course approaches the question of what mechanical engineering is by introducing several of its disciplines and applications. These lecture notes and the accompanying workbook together provide a broad picture of the field. But even after this course, it remains difficult to define mechanical engineering in one sentence. After the lectures, practical sessions, and CBL, you can estimate the role of mechanical engineering in those products of the examples mentioned above. You can also develop a good sense of the kinds of problems mechanical engineers solve.

III.2. The mechanical engineer#

What does a graduate mechanical engineer do? Just like the study program, the professional field is also broad.

Just a few examples of where a graduate mechanical engineer might work. Notice that manufacturing and advanced robotics appear not only as separate career areas, but also as enabling technologies across many of these roles:

  • in the research & development department of Océ, where you are involved in designing a new printer;

  • in a production or manufacturing engineering department, where you design and improve production systems, assembly processes, tooling, quality control, and automation for new products;

  • in a robotics or automation company that develops autonomous machines, robotic handling systems, or automated logistics equipment;

  • at ASML’s development department, where you deal with high-precision positioning of wafers (from which ICs are made);

  • at a university or at TNO, where you are engaged in research and development of improved airbag safety systems;

  • at a small engineering firm that deals with the design and improvement of industrial cooling installations for ice rinks;

  • as a production manager at Unilever, where you coordinate and improve the production of canned soup.

Below are six excerpts from vacancies aimed at engineering graduates and related technical profiles.

III.3. Mechanical engineering in a nutshell#

As stated earlier, mechanical engineering covers a wide range of disciplines and applications.

In the remainder of this course, a number of applications and core disciplines will be introduced. Particular attention should be paid to how these disciplines support the design and realization of manufacturable products and advanced robotic/mechatronic systems.

In later first-year courses and subsequent years, these disciplines are treated in greater depth.

This course allows you to explore the world of mechanical engineering in a nutshell: from understanding forces, motion, materials, heat, and flow to designing products that can be manufactured and machines and robots that can operate accurately, efficiently, and autonomously.