DEVICE FOR MEASURING PHYSICAL AND MECHANICAL PROPERTIES OF MATERIALS Russian patent published in 2011 - IPC G01N3/40 B82B1/00 

FIELD: physics.

SUBSTANCE: device for measuring physical and mechanical properties of materials (version 1) has a piezoelectric rod with two external and one separating electrode, an indentor placed on one end of the rod, a holder which holds the other end of the rod, an excitation circuit, a detection circuit and a controlled voltage source. The piezoelectric rod is composed of a free part and a part fixed in the holder, wherein the free part is a continuation of the fixed part and is tied to it, the controlled voltage source is connected to the fixed part, the indentor is placed at the end of the free part, one external electrode of the free part of the rod is connected to excitation circuit and the other external electrode is connected to the detection circuit. The device (version 2) differs from the first version by that it has an additional piezoelectric rod which, together with the composite rod, forms a tuning-fork structure, wherein the excitation and detection circuits are connected to different branches of the tuning fork.

EFFECT: high speed and sensitivity of the device and broader functionalities thereof.

3 cl, 4 dwg