For today's #MachiningMonday, we're exploring #metrology again! What's the difference between the true value and measured value of an object? Tony Schmitz, ACE curriculum developer, has that answer below. Got it? Now, join the 1,200 others who've registered for our online metrology course and get an edge in your #machining career. https://lnkd.in/g_xSrRQP
Professor, University of Tennessee, Knoxville | Joint Faculty, Oak Ridge National Laboratory | Director, SEAMTN | Director, Machine Tool Research Center
Given that I've been discussing measurements for the past two days at our ACE metrology boot camp, let’s talk about measurement uncertainty. Each time we perform a measurement, there is uncertainty in the measurement result. A complete presentation of a measurement result therefore includes the associated uncertainty. The figure relates important terms. The result of the measurement is labeled as the measured value. The true value, which may be different than the measured value and is not known, is also identified. The difference between these two is the error, which we also don’t know! We assign an uncertainty to the measurement based on our engineering knowledge (e.g., manufacturer information) or statistical methods (i.e., repeated measurements). The uncertainty interval encompasses a range of values around the measured value. We believe that the true value lies within the uncertainty interval with a stated level of confidence. If you'd like to learn more about metrology in manufacturing environments and evaluating measurement uncertainty, register for our online, no-cost ACE metrology course. https://lnkd.in/dWnixj6c #metrology #education
