Mechanical Systems Evaluation Laboratory

Complex Flow Research Division

Mechanical Systems Evaluation Laboratory


In lifecycle management of next-generation transportation systems and energy plants, evaluation of degradation and damage of structural materials induced by flow is one of key issues. Our laboratory is conducting research on sensing and monitoring that increase reliability and safety of these systems. Our activities include evaluation of degradation and damage in various materials by electromagnetic nondestructive testing methods, development of high temperature sensors, reliable sensing by sensor fusion, inverse approach, and so on. We aims at applying these sensors and testing methods to online monitoring.

Evaluation of Degradation and Damage in Rocket Engine Combustion Chamber by Electromagnetic Nondestructive Testing Methods

The residual life estimation based on damage evaluation is very important to ensure the safety of the repeated engine operation and the reusable systems. We apply eddy current testing (ECT) to detection and evaluation of cracks in a rocket engine combustion chamber, and novel probes and signal processing method are being developed.

Development of high temperature sensors and their application to online monitoring

Our laboratory develops the next generation sensors for high temperature environment. We propose an electromagnetic acoustic transducer (EMAT) design using an air-cored solenoid coil as a pulsed electromagnet, and prototype probe (photo) operation is confirmed in the range from room temperature to 700 degrees C. It can be applied to high-temperature non-contact monitoring of metal processing.

Nondestructive Evaluation of Degradation of Structural Materials Using Electromagnetic Testing Methods

Nondestructive evaluation of materials degradation such as creep, fatigue, plastic deformation and residual stress can be one of effective tools for lifecycle managements of structural components. Our laboratory are developing electromagnetic testing methods to evaluate material degradation. In addition, we are investigating the mechanism for electromagnetic properties and microstructure change by degradation.

Mechanical Systems Evaluation Laboratory