| Category | Number of Articles |
|---|
| Energy Systems and Thermodynamics | 79 |
| Control Systems | 63 |
| Combustion and Propulsion | 60 |
| Materials Processing | 56 |
| Nano-, Micro-, and Meso-Technology | 55 |
| Fluid Dynamics | 51 |
| Materials Behavior | 45 |
| Bioengineering | 38 |
| Automotive Systems | 33 |
| Dynamic Systems | 28 |
| Heat Transfer | 28 |
| Manufacturing Systems | 26 |
| Operations Research | 14 |
| Nano-, Micro-, and Meso-technology | 10 |
| Human Factors and Ergonomics | 8 |
| Human Factors | 8 |
| Design Methodology and Tribology | 7 |
| Microelectromechanical Systems (mems) | 5 |
| Computational Science and Engineering | 4 |
| Engineering Mechanics | 3 |
| Design Methodolgy and Tribology | 2 |
