Patent ID: 11933749
Assignee: TEXAS RESEARCH INTERNATIONAL, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 6:
7. An integrated nondestructive sensing method for inspection and measuring the cleanliness of composite surfaces coupled with a laser ablation method for removing contaminants and activating the composite surfaces comprising:
e. providing a pulsed laser system and using it to prepare and clean the composite surfaces;
f. providing a secondary electron sensing system using a short wave ultraviolet light to generate secondary electrons from the composite surfaces to generate a measurable current that is directly proportional to the cleanliness and activation of the surface;
g. collecting the generated secondary electrons with a mesh collector connected to a virtual ground;
h. measuring the secondary electron current with an ammeter; and
i. biasing the composite surfaces to ground with a negative DC power supply.