Control Test Measuring Method using Single Specimen
Original Publication Date: 1980-Oct-01
Included in the Prior Art Database: 2005-Feb-13
Dimensional changes often occur in various materials as they are processed through sequential chemical and/or abrasive operations. An example would be the copper loss that occurs when a printed circuit (PC) conductor is etched by an HCl solution for a specific length of time. Quantitative measurements, made to determine the magnitude of these dimensional changes, generally fall into the micron range.