Faculty Advisor

Bitar, Stephen J.

Faculty Advisor

Ludwig, Reinhold

Faculty Advisor

Makarov, Sergey N.


A system for detecting molten aluminum through six (6) inches of resin-bonded sand is presented. Its implementation is based upon the concept of eddy current testing as a means of non-destructive evaluation. This report details the design of an electro-magnet as a transducer and an Automatic Gain Control (AGC) circuit built upon an Op-Amp resonator. The project was funded by General Motors and the performance of the system was evaluated through testing with molten aluminum at Metal Casting Technology, Inc.


Worcester Polytechnic Institute

Date Accepted

January 2007


Electrical and Computer Engineering

Project Type

Major Qualifying Project


Restricted-WPI community only

Advisor Department

Electrical and Computer Engineering