Tsi Technologies LLC

Vladimir Malyshev

Evgeni Sorkine

Brian L Clothier

Michael J Bourke, Iii

A thermoplastic composite welding microwire temperature measurement system broadly comprises a plurality of moveable antennae configured to transmit interrogation signals, a rail system including a motorized linear stage configured to move the antennae along a weld line, and a reader or processor configured to determine a position of the microwire temperature sensor and determine a welding temperature based on response signals of the sensor. The interrogation signal corresponds to two different maximum ramp current amplitudes to create two re-magnetization pulses non-overlapping in the time domain.

In-situ monitoring and control of induction welding of thermoplastic composites using amorphous or nanocrystalline microwire temperature sensors and self-centering antennae rail system

A remote, noncontact temperature determination method and apparatus is provided, which is operable to determine the temperature of a conducting member in operative thermal communication with an object of interest. The method comprises the steps of first inducing a closed vortex eddy current in a conducting member by subjecting the member to a magnetic field, such that the corresponding eddy current magnitude changes exponentially over time. A characteristic time constant of the exponential current magnitude changes is then determined, and this is used to calculate the temperature of the object. The apparatus includes a field transmitting coil coupled with a waveform generator for inducing the eddy current, and a field receiving coil assembly which detects the corresponding induced magnetic. Temperature determinations can be made which are substantially independent of the relative distance and/or angular orientation between the conducting member and the field receiving coil assembly.

Eddy current thermometer

A remote, noncontact temperature determination method and apparatus is provided, which is operable to determine the temperature of a conducting member forming a part of or in operative thermal communication with an object of interest. The method comprises the steps of first inducing a closed vortex eddy current () in a conducting member () by subjecting the member () to a magnetic field, such that the corresponding eddy current magnitude changes exponentially over time. A characteristic time constant of the exponential current magnitude changes is then determined, and this is used to calculate the temperature of the object. The apparatus () includes a field transmitting coil () coupled with a waveform generator () for inducing the eddy current (), and a field receiving coil assembly () which detects the corresponding magnetic field induced by the eddy current (). Using the invention, temperature determinations can be made which are substantially independent of the relative distance and/or angular orientation between the conducting member () and the field receiving coil assembly ().

Growing community of inventors

Moscow, Russia

Vladimir Malyshev