6 March 2017

Difference between resilience and toughness

Both Resilience and toughness are discussed during the design of any components or parts of material science. They are different and although the two are closely related and the differences are significant so we can check the difference below. 

What is Resilience?

Resilience is defined as the ability of a material to absorb energy when elastically deformed and release it when unloaded.

What is Toughness?

Toughness is defined as the ability of a material to absorb energy before a fracture occurs.

Let us have a deep insight into the difference between resilience and toughness. 

Difference : 

  • Resilience is the ability of the material to absorb energy within an elastic range while toughness is the ability of both the elastic and the plastic range to absorb energy.
  • Modulus of resilience is the area below the stress-strain curve in the tension test up to the yield point while the modulus of toughness is the total area below the stress-strain curve.
  • Resilience is essential in spring applications whereas toughness is required for components subjected to bending, twisting or impact loading components. 
  • Spring steels are resilient while structural steels are tough.
  • Metallic glasses are the most resilient materials, while stainless steels and titanium alloys are known to be very tough materials.