Wirelessly interrogated surface acoustic wave (SAW) sensors can operate passively and in harsh conditions reliably. The interrogation process of the signal measurement chain provides the power to excite the sensor and hence establish the sensors response in a passive manner. Development of wireless passive SAW sensors allows investigation of their potential to quantify physical measurands such ...

A better understanding of saw-chain cutting mechanics is needed for more efficient chainsaw designs. The effects of varying key parameters such as workpiece moisture content, workpiece density, cutting velocity, and depth-of-cut, while established for other types of cutting, are largely unexplored and/or unpublished for saw chains. This study contributes to filling this gap through experimentat...

Title of Document: READ-OUT CIRCUITS FOR INTEGRATED SURFACE ACOUSTIC WAVE SENSORS. Sambarta Rakshit, Doctor of Philosophy, 2015 Directed By: Agis A. Iliadis, Professor, Electrical and Computer Engineering Readout modules for vapor and liquid phase SAW sensors fabricated on piezoelectric films are typically configured as single or dual delay line oscillator loops. Mass loading of the sorbent fil...

A circular saw blade is a commonly used tool in wood processing. The transverse vibration of the plays an important role processing quality during cutting and affects its service life as well. In study, was investigated at constant rotation by simulation using ANSYS software when changing cantilever length woodworking CNC machine. Meanwhile, without with load explored eddy current sensors for d...

Nondestructive evaluation of the prevailing compressive residual stress in the shallow subsurface layer of surface-treated metals is greatly complicated by the accompanying surface roughness and cold work. A high-precision laser-ultrasonic technique has been developed to study the feasibility of SAW dispersion spectroscopy for residual stress assessment on surface-treated metals in a wide frequ...