Eric G Winter

US Patent:

20180038792, Feb 8, 2018

Filed:

Aug 8, 2016

Appl. No.:

15/231691

Inventors:

- Chicago IL, US
- Seattle WA, US
Brian D. Flinn - Seattle WA, US
Eric G. Winter - Freeland WA, US
Gary E. Georgeson - Tacoma WA, US
Wesley L. Holman - Mill Creek WA, US
Gregory R. Gleason - Seattle WA, US
Scott R. Johnston - St. Louis MO, US

International Classification:

G01N 21/64
B64F 5/60
G01L 1/24
G01K 11/12
B32B 7/12
B32B 37/12

Abstract:

There is provided a removable chromatic witness assembly, system, and method to monitor thermal events and impact events on a surface of a composite structure. The removable chromatic witness assembly has a plurality of chromatic witness geometric configurations separately coupled in an arrangement to one or more portions of a polymeric film layer. Each chromatic witness geometric configuration has a plurality of chromatic probes of a same type incorporated into an adhesive material. At least two of the geometric configurations have a different type of chromatic probes with a different sensing capability for thermal events and impact events on the composite structure. The polymeric film layer and the geometric configurations form the removable chromatic witness assembly in a form of a removable chromatic witness applique configured to be removably applied directly and continuously to the surface of the composite structure, and configured to monitor the thermal and impact events.