Дефектоскопията е добре познат не деструктивен метод за изследване на материали, но НЕ Е друго наименование на шерографията, която е създадена по-късно, за да отговори на специфични изисквания.
The demand for greater product quality in industry has created a need for better and faster techniques for non-destructive testing.
Because traditional techniques such as ultrasonic and radiography are rather time consuming, there is a need for much faster full field method without surface preparation.
Shearography is one of those.
http://www.dantecdynamics.com/Default.aspx?ID=665