(The Modal Shop: Cincinnati) -- ASTM E2001-8 -- “Standard Guide for Resonant Ultrasound for Defect Detection in Both Metallic and Non-Metallic Parts” has been revised and released. Standardizing resonant inspection nondestructive testing (NDT) across different organizations, companies, and countries to be able to have meaningful comparison and consistency for the technique is the express purpose of the new standard.

ASTM E2001-8 allows end-user companies to more easily specify resonant inspection as a standardized technique and be assured that regardless of the vendor, the application of the technique will be consistent.

Resonant ultrasound spectroscopy (commonly referred to as resonant inspection) based NDT techniques all vibrate a part mechanically and detect defects based upon measurable changes in the given part’s resonant frequency pattern. These techniques have become commonly used for quality inspection in the manufacture of steel, sintered, and ceramic parts.

The standard describes a procedure for detecting defects in parts using resonance. The procedure describes a whole body resonant techniques used to distinguish acceptable parts from those containing defects such as cracks, voids, chips, density defects, tempering changes, and dimensional variations.

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