Piezoelectricity for Nondestructive Testing of Crystal Surfaces

TL;DR

This paper proposes a nondestructive testing method for crystal surface uniformity using voltage differences generated by applied stress on piezoelectric crystals.

Contribution

It introduces a novel technique leveraging piezoelectric voltage measurements to assess surface uniformity without damaging the crystal.

Findings

Voltage differences correlate with surface non-uniformity

Method effectively detects surface defects

Non-invasive testing approach

Abstract

A stress is applied at the flat face and the apex of a prismatic piezoelectric crystal. The voltage generated at these points differs in order of magnitude. The result may be used to nondestructively test the uniformity of surfaces of piezoelectric crystals.