A compact, low cost, in- process welding defects detection system based on thermal plasma emission

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N65538-08-M-0149
Agency Tracking Number: N082-178-0481
Amount: $69,999.00
Phase: Phase I
Program: SBIR
Awards Year: 2008
Solicitation Year: 2008
Solicitation Topic Code: N08-178
Solicitation Number: 2008.2
Small Business Information
28 Hillstream Road, Newark, DE, 19711
DUNS: 808480086
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Pengcheng Lv
 Senior Scientist
 (302) 294-0116
 pengcheng@alphasense.net
Business Contact
 Xin Zhang
Title: President
Phone: (302) 999-3422
Email: xin@alphasense.net
Research Institution
N/A
Abstract
In this proposal, AlphaSense, Inc. (AI) and the University of Michigan (UM) detail the development of a compact, portable, and low cost in-process weld defects detection system. Key innovations of the proposed system include: a) weld defects monitoring based on plasma emission characteristics; b) use the electron temperature of the plasma as an indicator of the weld quality, c) use multiple plasma emission lines to enhance the system sensitivity, and d) the development and application of a Continuous Wavelet Transform (CWT) based peak detection algorithm to enhance the sensor sensitivity, and to reveal plasma emission signatures associated with contaminations. With these innovations, we expect that the final product of this proposal will be a compact (~4x4x2 inches), light weight (~1lb), low cost (<$1K/ unit if produced in small volume), and wearable sensor.

* Information listed above is at the time of submission. *

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