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Bioengineering and Ethics
Published in Howard Winet, Ethics for Bioengineering Scientists, 2021
Engineering, like medicine, flourished during the Italian Renaissance. Inventors like Leonardo da Vinci (1452–1519) and Johannes Gutenberg, and architectural engineers like Fillipo Brunelleschi (1377–1446) flourished. Major developments included:more accuracy and precision in time and length scales of manufacturing processes.the beginning of standardization of parts.manufacture of production machines that reduced variation between manufactured parts.application of mechanics to improve machines such as pumps.industrialization of mining with the help of explosives, ore transporters and water pumpsprinting was used to produce engineering textbooks, particularly for mining (Aslaksen 2013)
ISO-9000 Requirements
Published in Michael B. Weinstein, Total Quality Safety Management and Auting, 2018
The measuring equipment used must be appropriate, capable of the required accuracy and precision, and handled to maintain its integrity. The equipment and facilities should be protected. The equipment should be calibrated at periodic intervals or before use, and the calibration results and status should be identified and documented. The reference standards used should be traceable to national or international standards or to special documented criteria.
Modeling and Calibration
Published in Stephen Horan, Introduction to PCM Telemetering Systems, 2018
Various types of errors can affect the accuracy and precision of the measurement process. This section covers the types of errors that can be found in measurements. The next section explores statistical ways of describing random errors. Other types of errors can be quantified and compensated for by proper calibration.
Comparing two measurement systems using the probability of agreement web app
Published in Quality Engineering, 2018
Laura T. da Rocha, Nathaniel T. Stevens
Producing high quality product is important in manufacturing and other industries. Consequently, it is important to be able to measure quality accurately and precisely, and to be able to evaluate the accuracy and precision of a given measurement system. Gauge repeatability and reproducibility (Gauge R&R) studies are commonly used for this purpose. In addition to assessing the performance of a single measurement system, it is also of interest to compare two or more measurement systems. Consider the situation in which a new measurement system becomes available that is cheaper and/or easier to use than the existing one. In this situation, one may be interested in comparing these two measurement systems to investigate, in terms of accuracy and precision, whether the new one performs as well as the old one.
Quality evaluation of internal cylindrical grinding process with multiple quality characteristics for gear products
Published in International Journal of Production Research, 2019
Mei-Fang Wu, Hsuan-Yu Chen, Tsang-Chuan Chang, Chih-Feng Wu
When a client requires a quality standard of level, manufacturers can determine whether the requirement is reached based on where the quality characteristics fall on the MPQAC. If the process quality does not reach the required level, then the manufacturers can use the chart to determine the accuracy and precision of each quality characteristic and then formulate improvement measures accordingly. In view of this, we trust that the MPQAC will serve as an effective analysis tool for the enhancement of the quality of internal cylindrical grinding.