materjali (toote) struktuuri, omaduste jms uurimisel kasutatav katsetusmeetodite perekond, mille käigus materjali (toodet) ei purustata (vrd purustav katse; vt mittepurustava katse hinnang), a family of inspection methods of materials and products without affecting their subsequent properties and performance (compare: destructive testing; see: nondestructive evaluation)