TRANSIENT THERMOGRAPHY

摘要

A non-destructive technique for detecting defects within a body (10) whose surface (13) is capable of converting radiant energy to thermal energy. The technique involves exposing the surface (13) to a precisely determined pulse of radiant energy from a flash tube (12), the distribution of heat within the body (10) subsequently being observed by an infra-red camera (20) producing a T.V. compatible signal.