Young's Modulus and Structural Applications
Definition
Young's Modulus
A measure of a material’s stiffness, defined as stress divided by strain.
- Designers and engineers choose materials with the right stiffness for a specific job.
- Stiff materials are ideal for structures, frames, or parts that must resist bending.
- Flexible materials are better for shock absorption, comfort, or parts that must deform.
Comparing Materials with High and Low Young's Modulus
High Young's Modulus
- Stiffness: Materials with a high Young's Modulus are stiff and resist deformation.
- Applications: Used in structures where minimal deformation is critical, such as bridges, skyscrapers, and aircraft wings.
- Steel: High Young's Modulus (~200 GPa), making it ideal for load-bearing structures.
- Carbon Fiber: Combines high stiffness with low weight, used in aerospace and automotive industries.
Low Young's Modulus
- Flexibility: Materials with a low Young's Modulus are flexible and deform easily under stress.
