A method for monitoring the integrity of a permeable structure that is disposed in an environment containing a fluid at ambient pressure is provided. At least one cavity is formed in or on the permeable structure. A source of first fluid is provided at a first pressure greater than the ambient pressure....http://www.google.fr/patents/US7500383?utm_source=gb-gplus-shareBrevet US7500383 - Method and apparatus for monitoring the integrity of components and structures
Method and apparatus for monitoring the integrity of components and structures
