MANU 3410 Metrology - Lecture 1 Overview

<p>Standardization for interchangeable parts (B)</p> Signup and view all the answers

<p>Greek Sun Dial (C)</p> Signup and view all the answers

<p>Eli Whitney (D)</p> Signup and view all the answers

<p>Need for interchangeable parts (A)</p> Signup and view all the answers

<p>The texture of a surface quantified by the irregularities (C)</p> Signup and view all the answers

<p>The science of measurement (A)</p> Signup and view all the answers

<p>Area (A)</p> Signup and view all the answers

<p>Metrologist (B)</p> Signup and view all the answers

<p>A comparison of an unknown quantity to a known standard (C)</p> Signup and view all the answers

<p>An accepted and consistent system of units (C)</p> Signup and view all the answers

<p>Volume (C)</p> Signup and view all the answers

<p>Measurement that changes over time (C)</p> Signup and view all the answers

<p>Light intensity (D)</p> Signup and view all the answers

<p>35% (A)</p> Signup and view all the answers

<p>SW09-107 (A)</p> Signup and view all the answers

<p>Gage Blocks (D)</p> Signup and view all the answers

<p>Brian Ennis (C)</p> Signup and view all the answers

<p>Tuesdays 8:30 to 12:20 (D)</p> Signup and view all the answers

<p>Appropriate PPE (C)</p> Signup and view all the answers

<p>Laser measurement (B)</p> Signup and view all the answers

<p>Week 9 (C)</p> Signup and view all the answers

<p>SW09-205 (B)</p> Signup and view all the answers

<p>My BCIT email accounts (C)</p> Signup and view all the answers

<p>June 22, 1799 (A)</p> Signup and view all the answers

<p>International Bureau of Weights and Measures (BIPM) (D)</p> Signup and view all the answers

<p>Meter-Kilogram-Second (D)</p> Signup and view all the answers

<p>Direct measurement (D)</p> Signup and view all the answers

<p>1948 (D)</p> Signup and view all the answers

<p>Ruler with unmarked scale (B)</p> Signup and view all the answers

<p>Both types actually require the use of comparison with a standard. (B)</p> Signup and view all the answers

<p>2019 (C)</p> Signup and view all the answers

<p>A man-made length used for comparison. (C)</p> Signup and view all the answers

<p>What color is the error? (D)</p> Signup and view all the answers

<p>The degree of fineness of a measurement. (D)</p> Signup and view all the answers

<p>Reliability (C)</p> Signup and view all the answers

<p>Determining if a part feature is within specifications. (A)</p> Signup and view all the answers

<p>From end to end, starting at a reference point. (B)</p> Signup and view all the answers

<p>Measuring instruments offer immediately readable numerical information. (D)</p> Signup and view all the answers

<p>The science of measurement with a focus on uncertainty. (B)</p> Signup and view all the answers

The science of measurement, focusing on comparing an unknown quantity to a known standard using a consistent unit system.

The science of predicting weather patterns.

A person who practices Metrology, specializing in measurement science.

The seven fundamental quantities in Metrology are length, mass, time, electric current, temperature, light intensity, and amount of matter.

Derived quantities in Metrology are calculated from the fundamental quantities, such as area, volume, velocity, and force.

Metrology specifically focuses on measuring mass, length, and time, which are crucial for various applications.

A standardized and widely accepted system for quantifying measurements, ensuring consistency and comparability.

The accuracy, precision, and reliability of a measuring instrument or system.

The science of measurement, focusing on the principles, methods, and tools used to determine size, shape, and other physical quantities.

A numerical representation of the difference between a measured value and the true or reference value.

A device used to measure a specific dimension, like length or diameter, and is often used in manufacturing environments.

A common type of gage that uses a series of precisely machined blocks of various thicknesses to establish reference dimensions.

The ability of a measuring instrument to consistently produce the same reading for a given dimension.

The ability of a measuring instrument to produce readings that are close to the true value.

The ability of a measuring instrument to detect small changes in the measured dimension.

The ability of a measuring instrument to maintain its accuracy over time and under various conditions.

A specific set of symbols and rules used to define and communicate tolerances and other geometric features on engineering drawings.

A type of measuring instrument that utilizes a mechanical or electronic system to magnify small variations in a dimension, which can be used for high-precision measurements.

The purpose of metrology is to clearly define design intentions, ensuring parts fit and function correctly during manufacturing and assembly.

Metrology helps ensure that parts meet the specified design requirements, guaranteeing the quality and functionality of the product.

A standardized length measurement system used in ancient Egypt, dating back to approximately 3000 BC.

A tool used in ancient Egypt for measuring mass dating back to approximately 2000 BC.

A device used in Ancient Greece for measuring time dating back to around 200 BC.

The transition from individual craftsmanship to mass production, which led to the need for interchangeable parts to ensure product consistency.

A system where parts are made with identical dimensions, allowing for easy replacement and assembly without individual fitting. It was crucial for the success of mass production during the Industrial Revolution.

In 1801, Eli Whitney demonstrated the principle of interchangeable parts by successfully producing ten identical firearms with interchangeable components. This achievement had a significant impact on the development of manufacturing.

The Industrial Revolution (1760s-1840s) saw the rise of standardized production, leading to the development of the metric system, based on the platinum standard for the meter and kilogram.

The International System of Units (SI), based on the meter-kilogram-second (MKS) system, was established by the International Bureau of Weights and Measures (BIPM) in 1960.

In 2019, the SI base units underwent a redefinition that relies on fundamental physical constants, like the speed of light and Planck's constant.

Direct measurement uses a calibrated tool to directly measure the dimension, like using a scale or a caliper.

Comparison measurement compares an unknown dimension to a known standard, like using a gauge block to check if a part is within tolerance.

Both direct and comparison measurement rely on using a standard for reference.

Measuring instruments need to be assessed for accuracy, precision, and reliability. Accuracy is how close a measurement is to the true value, precision is how consistent measurements are, and reliability is how consistent a measurement is over time.

A standard is a defined or man-made length used to compare all other lengths.

Errors are inevitable in measurements, and understanding their nature is crucial for ensuring data reliability.

Precision refers to the level of fineness in a measurement, while accuracy indicates how closely a measurement matches a true or accepted standard.

Measurement begins at a reference point and extends to a measured point, forming a line with direction and potential for reversal.

Measurement instruments provide numerical readouts, while gages check for conformity with specifications or standards.

Metrology is essential for ensuring consistency and accuracy in measurements, which helps prevent financial losses and avoids discrepancies in engineering, manufacturing, and quality control.

The scientific method emphasizes careful observation, systematic experimentation, and rigorous analysis to ensure reliable and meaningful results.