Guides · ISEF category
Engineering Mechanics
ISEF category EGMS · difficulty for high-school students: medium
Structural analysis, fluid mechanics, aerodynamics, acoustics, vibration, thermal engineering, and mechanical design. Both theoretical analysis and experimental validation.
How it's judged
ISEF scores 100 points across five criteria:
- Creative Ability: 30 pts
- Scientific Thought: 30 pts
- Thoroughness: 15 pts
- Skill: 15 pts
- Clarity: 10 pts
What wins
- Novel structural design with FEA simulation + experimental validation
- Aerodynamic optimization study with wind tunnel or CFD analysis
- Acoustic metamaterial for noise cancellation with frequency-specific characterization
- Thermal management solution for electronics with temperature mapping
- Biomechanics study of locomotion or impact with force measurement
Common mistakes
- Building a bridge and testing its maximum load — this is a demonstration
- Simulation results without any experimental validation
- Not reporting failure mode, safety factor, or uncertainty in load testing
What you'll need
Depends on sub-field. Structural: load frame or improvised strength tester. Fluid: wind tunnel (can be DIY) or CFD software (OpenFOAM is free). Acoustic: signal analyzer, speakers, microphones.
Ethics & approvals
Human-subjects (IRB) approval is usually not required for this category. Vertebrate-animal (IACUC) approval is usually not required.
The novelty bar
A new design that outperforms existing solutions on a specific metric, with experimental data and a physical explanation for why it performs better.
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