Novel Plasma Stabilization and Control of Titanium Welding Processes

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$69,955.00
Award Year:
2006
Program:
SBIR
Phase:
Phase I
Contract:
W15QKN-07-C-0007
Agency Tracking Number:
A062-046-3692
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
TECHNOLOGY MANAGEMENT CO., INC.
2500 Louisiana NE, Suite 300, Albuquerque, NM, 87110
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
959735713
Principal Investigator:
Vivek Dave
Division Manager, Beyond6 Division
(505) 412-3598
vivek.dave.05@comcast.net
Business Contact:
Erin Mathie
Contracts Manager
(505) 872-3146
emathie@tmcservices.com
Research Institution:
n/a
Abstract
Current commercially available systems for pulsed gas metal arc welding (GMAW-P) monitor electrical characteristics of the arc and attempt to compensate for process deviations by pulsing current at a constant frequency. For highly critical GMAW-P applications in challenging materials like titanium, the present approach cannot simultaneously control arc stability, bead shape, and weld metallurgy. Furthermore, the systems available today cannot preclude the occurrence of instabilities over certain ranges of travel speed and arc voltage. We propose a multi-sensor, multi-objective sensing and adaptive control method that senses arc electrical characteristics, the dynamics of individual droplets in the GMAW process, and the dynamics of the weld pool. We utilize reconfigurable, intelligent phase locked loop technology in conjunction with very high speed data acquisition, non-imaging optical weld pool sensors, and fuzzy logic controllers to achieve a comprehensive control solution that addresses the shortcomings of currently available systems. Such a system will allow for the first time multi-objective control of arc stability, bead shape, and weld metallurgy.

* information listed above is at the time of submission.

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