Doing It Right the First Time: Maintaining Densitometer Calibration

摘要

A densitometer is a key tool for con-trolling the exposure and develop-ment process during radiographic film-based nondestructive testing (NDT) procedures. Yet it may be one of the most overlooked sources of problems affecting the quality of radiographic tests. Radiography labs that provide NDT pay a great deal of attention to their radiation sources, processing procedures, and skilled readings of sample defects in final images.