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A Handheld Sensor for Amorphous Coating Integrity Evaluation

Award Information

Department of Defense
Defense Advanced Research Projects Agency
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
AlphaSense, Inc.
DE Wilmington, DE 19808-6271
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Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2011
Title: A Handheld Sensor for Amorphous Coating Integrity Evaluation
Agency / Branch: DOD / DARPA
Contract: D11PC20160
Award Amount: $1,124,997.00


In the current SBIR program, AlphaSense aimed at developing a novel, handheld, non-destructive sensor to evaluate the integrity of Naval Advanced Amorphous Coatings (NAAC) in real time. In phase I, we have proven the feasibility of using the cavity perturbation technique to detect different types of defects present in thermal-sprayed testing coupons. Specifically, we optimized the sensor probe design and implemented an alpha- version sensor hardware. We measured the perturbed cavity resonances by reference and defect coatings, and correlated the sensor data with the material microstructures. We also identified methods to further enhance the sensor performances in detecting defects present in the coating/substrate interface and substrate. Phase II will be focusing on the optimization of the sensor system to improve its performance in terms of sensitivity, dynamic range, and interrogation depth, and the implementation of a compact, portable, relatively inexpensive and field testable prototype.

Principal Investigator:

Pengcheng Lv
Senior Scientist
(302) 998-1116

Business Contact:

Xin Zhang
Director of Contracts&Pro
(302) 998-1116
Small Business Information at Submission:

AlphaSense, Inc.
470 Century Blvd. Boxwood Commerce Center Wilmington, DE -

EIN/Tax ID: 261422091
Number of Employees:
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No