Sensors & Electronics
Electronics & Systems
Process Feedback for Improved Coatings (381)
Problem: Improving electrospark deposition (ESD) coating consistency requires effective control of tool pressure during coating operation.
Project Activity Scope (from Technical Overview Chart): Sensors and Devices through Instruments
PNNL Solution:
- Direct pressure measurements were not practical.
- Determined that peak current levels correlate with tool pressure.
- Developed module to provide audio tone indication of tool pressure variations to operator.
- Successfully demonstrated that audio feedback allowed improved coating consistency.
- Deployed system for practical use.
Capabilities Employed to Meet Client Needs: Testing determined direct probe pressure monitoring was not viable for routine use; established correlation between peak current levels and probe pressure; developed current analysis algorithm that allowed reliable indication of desired operating conditions; developed audio tone indicator circuit to aid operator in maintaining desired film properties; conducted successful demonstrations; established intellectual property position; delivered prototype units for practical field evaluation.
Selected Links to Related Information:
- Related Examples (Same Project)
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Contact: Jeff Bailey
