Core density is one of the most critical parameters influencing mechanical strength, weight, and cost.
As density increases:
- Compressive strength increases
- Shear modulus increases
- Weight increases
- Cost increases
For example:
- Low density (60–80 kg/m³): lightweight, used in insulation
- Medium density (80–130 kg/m³): general structural panels
- High density (130–250 kg/m³): high-load applications (marine, aerospace)
However, over-specifying density leads to unnecessary weight and cost, while under-specifying results in structural failure risks.
Engineering design typically involves optimizing density based on:
- Load requirements
- Span length
- Environmental conditions
