Thursday, February 7, 2008

SHM for aeropase structures


In this article you will find an interesting overview about the future of SHM for aircrafts:

Future Inspection Technologies (from avitaion week)

Here are a few interesting quotes:

Posit for a moment the airplane of the future, a flying machine all but freed from scheduled inspections, able to keep flying because of sets of sophisticated sensors imbedded within it.
Behold, the monitored machine.
In perhaps a decade or so, a mechanic might do a walk around inspection, much as the first officer does at pre-flight, just before departure. But this walkaround would be far more probing. Armed with a wireless ultrasound device, "your technician walks past the airplane and a little chip beeps at him," envisions Michael Moles, senior technology manager for Olympus NDT. "He knows then and there whether there's a problem." This, contends the veteran NDT executive, "will tend to be the future," a future predicated not so much on periodic inspection, as on structural health monitoring.

The irreducible criteria regulators will consider whether the in-situ sensor "works as [well] or better than my current hand-held inspection technique," said Roach. That's step one, a step that conceivably could lead to what Roach and Rackow write terms, "Condition-based maintenance practices ... substituted for the current time-based maintenance approach." At the very least, the Sandia researchers contend in-situ sensors render it "possible to produce an aircraft prognostic health architecture that can assist in maintenance scheduling and tracking."

Friday, February 1, 2008

Bridge Inspection and Conditions Maps


MSMBC has created a nice tool to map the conditions and inspection record of all US bridges in the national inventory.


You can find it here.