Application of Simulation Software to Coordinate Measurement Uncertainty Evaluations

Abstract

Introduction Measurement uncertainty plays a vital role in establishing traceability to national and international standards [1]. Likewise, it is a critical factor in the arbitration of issues pertaining to product conformance [2]. For dimensional metrology, it is necessary to associate with each GD&T parameter an assessment of its uncertainty at a specified level of confidence. As a result, for manufacturers to adhere to current standards, inspection reports must be supplemented with statements like, “The uncertainty of the diameter of this nominally 6 mm diameter hole is 0.02 mm, at 95% confidence.” This is an example of what is often called a task-specific measurement uncertainty statement.