It is also a nonlinear optical material with second harmonic generation efficiency 1.68 times that of KDP.

It then describes in a complete way the fields of stress and strain at the peak of the crack in nonlinear elastic materials.

Let us consider an infinite body made up of a nonlinear material, quasi-statically deformed in a way that stress and strain may remain homogeneous.

The search for novel nonlinear optical materials for dynamic holography is an active area of research.

The above equation cannot be used for nonlinear materials, though; a more general expression given below must be used.

Arduengo also directs research programs into Chemical Hydrogen Storage and nonlinear optical materials.

It may also depend upon the electric field (nonlinear materials) and have a time dependent response.

The reason for this is the ultra-fast response of certain nonlinear dielelectric materials to optical fields.

The J-integral was developed because of the difficulties involved in computing the stress close to a crack in a nonlinear elastic or elastic-plastic material.

Periodically poled crystals are frequently used as nonlinear optical materials.