Blunt impact indicator methods

BLUNT IMPACT INDICATOR METHODS Systems and methods using fluid-filled hollow microspheres (6) to assist in monitoring or indicating high-energy blunt impacts on structures such as aircraft. A multiplicity of microspheres (6) may be adhered to or embedded in a coating applied on a surface of a substr...

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Bibliographische Detailangaben
Hauptverfasser:	TAPIA, WILLIAM JOSEPH, GEORGESON, GARY E
Format:	Patent
Sprache:	eng
Schlagworte:	AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION COSMONAUTICS EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT MEASURING MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK PARACHUTES PERFORMING OPERATIONS PHYSICS TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	BLUNT IMPACT INDICATOR METHODS Systems and methods using fluid-filled hollow microspheres (6) to assist in monitoring or indicating high-energy blunt impacts on structures such as aircraft. A multiplicity of microspheres (6) may be adhered to or embedded in a coating applied on a surface of a substrate (2) (e.g., a tape or an applique), which substrate (2) in turn can be adhered to a surface of a structure to be monitored. The microspheres (6) are designed to rupture at one or more specified pressure thresholds. In some embodiments, the microspheres (6) are filled with electrically conductive fluid (20) which, if released from ruptured microsphere (6), changes the electromagnetic state of the substrate (2). In response to the detection of a sufficiently large change in the electromagnetic state of the substrate (2), a blunt impact indication is generated. The impact site may then undergo non-destructive inspection. 2 1o00 a2b ,NII 41ON a*0a e 0% e 8\ /20 / 6 2a04 10 2b