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Open access. Submitted: September 22nd, Published: August 1st, Metrology, the science of measurement, is crucial for manufacturing technologies. Since manufacturing has made huge leaps depending on the improvements in metrology, the book reflects recent developments in metrology in detail. This book focuses on dimensional and geometric measurements as well as technical testing and quality control applications in industry. It also intends the fundamentals of metrology concerning the related standards and systems of units.
In addition, the book considers the calibration of measurement instruments and measurement uncertainties as the basic requirements of the related quality standards. Furthermore, it mentions the trends in micro and nanometrology and microscopic examinations. Topics covered in this book are of course not limited to them. The readers can find chapters about Metrology in a wide frame. Physical properties such as length, weight, and temperature are determined by comparison with known quantities.
In addition, measurement techniques are available in all engineering disciplines and allow for the creation and operation of all other scientific branches. In particular, measurement techniques are required at all levels of laboratory works. In fact, we practically measure many things: the weight of our body, the volume of our fuel oil, the temperature of the house, the noise at the factory, the distance between two points, etc.
In addition to having an important place in our daily life, the measurement technique is the basis of almost all science branches such as Physics, Chemistry, the relationship between fundamental units and derived units Biology. Measurement techniques are used to solve technical problems at all science branches. Theoretical hypotheses are supported by proving correctness by means of measurement technique by making necessary experiments and observations.
Metrology is the science of measurement. It covers all the practical and theoretical topics based on measurement, regardless of accuracy level and application area [ 1 ]. Measurement processes, measurement methods and procedures, instrumentation, calibration, determination of measurement systems, verification, measurement accuracy, measurement precision, measurement error, data acquisition, evaluation of measurement results, the formation of statistical evaluations, and quality determinations are the main subjects of metrology.
The recognition that a measurement made by an industrial device is recognized worldwide and is the same as the relationship between fundamental units and derived units other measurement made possible by achieving the highest precision basic measurement standard with a measurement reference chain. As a result, the calibration and verification processes have gained a great deal of importance. With calibration, the measurement of a less precise measuring instrument or standard is carried out using an accepted standard of accuracy [ 2 ].
National metrology institutes are operating at the highest level, linked to the system by reference chain. These institutions are also linked to the Bureau International des Poids et Measure BIPM in central Paris in order to ensure that the measurements are internationally recognizable in a hierarchical structure. In the process of industrialization which started with serial production, it has become very important to establish a whole by combining the parts produced in different places, initiate specialization forms in the subsidiary industry and production, and make the measurements internationally recognizable.
The reliability of measuring instruments has increased at the same rate as the widespread use of microelectronics. Nowadays, measurement techniques are required to meet demands for faster, more accurate, and more flexible measurements. The documentation of measurement results is equally important. The development of precise manufacturing technology brings the need for more the relationship between fundamental units and derived units measuring technology.
The developments in technology, especially in the field of measuring technology, have been the main reason for the increasing demands on the accuracy of the measurement. As micro and nanotechnologies have been used, it has the relationship between fundamental units and derived units inevitable to develop devices and instruments that the relationship between fundamental units and derived units the measurement operations to be carried out at these accuracies.
New dimensions and research opportunities have been born in many scientific fields such as being in the electronics or molecular biology with nanotechnology. All of these disciplines are doing nanoscience studies on their own terms, and the opportunity to share all these different windows and share tools and techniques that develop independently is attractive to all sciences today. The placement of the atoms in the prescribed positions with the aid of nanotechnology is the relationship between fundamental units and derived units in this technology.
In nanometrology, the measurement size is typically specified as a nanometer. All applied methods are based on microscope technique with nano-position systems and position measurements at high accuracy. For instance, in mechanical engineering, nanotechnology and nanometrology are the necessary technologies to make a crystal perfect. The ability to precisely control the alignment of imprints and errors with respect to each when can you do genetic testing pregnancy and the ability to integrate perfectly inorganic and organic nanostructures will lead to the emergence of a whole new generation of advanced composites.
The improvements in technology intended to use the term picotechnology is a combination of picometer and technology, parallel the term nanotechnology. Basic speckle metrology and autonomic computing resources are of course the most realistic uses of picotechnology. The ability to examine and manipulate resources at this level is quite useful. Of course, it is not difficult to imagine the tangible advantages of this type of technology.
Standards are considered as measurement references. The basic standards about metrology are the basis of the traceability which is defined as a measurement whereby the result can be related to the relationship between fundamental units and derived units reference through an unbroken chain of calibrations. The most important condition of each measuring process and the manufacturing technique is the presence of units which are exactly defined according to the required quantities, and the relationship between fundamental units and derived units units must be determined in accordance what causes bugs in spices internationally established rules.
M easurement is a process that uses numbers to describe a physical quantity done to be able to compare them to each other. The SI, The International System of Units, is the modern form of the metric system, and the most widely used system of measurement is made up of the relationship between fundamental units and derived units base units that define the 22 derived units with special names and symbols.
Base units provide the reference used to define all the measurement units of the general theory of relativity examples brainly, while the derived units are products of base units and are what happens to love in you season 2 as measures of derived quantities.
Derived units are the units obtained by algebraic operations from basic and auxiliary units. The uncertainty of a measurement is a predicament that characterizes the range of values, including the true value of the the relationship between fundamental units and derived units. Measurement uncertainty is an important topic for all measurement fields. All measurements have error. The error of a measurement is unknowable because one cannot know the error without knowing the true value of the quantity being measured.
The uncertainty of measurement generally includes many components. Some of these components can be estimated on the basis of the statistical distribution of series measurement results and can be characterized by empirical standard deviations. The estimates of the other components are based solely on the main information or experiences. The uncertainty of measurements should be evaluated and reported according to the related international standards.
The purpose of calibration is to determine and document how much of the equipment is in error with the actual value. The correct value is obtained by considering the amount of error in the result. Calibration is the process of determining the relationship between the value read in a gauge and the gauge size. Calibration and control of measuring, inspection, and control equipments ensure the appropriateness of measurements made during manufacturing. The continuity of this safety is ensured by the regular and identifiable calibration of the equipment in question.
Calibration is performed by comparison with a measurement of normality known to the measurement magnitude. To sum up, calibration is explained in the related standard: under specified conditions, the series of operations in which the relationship between the values indicated by a measuring instrument or device and the values indicated by a material measurement or reference material is established [ 3 ].
In order to supply traceability in measurements, how many bots on tinder hierarchy in Figure 1 should be followed up carefully. Metrology and inspection together serve as the control function of the quality of conformance. Inspection helps to evaluate the degree of conformance or nonconformance to specifications, provides for reporting of deficiencies early in the production process, and helps to assure that desired quality requirements have been met.
The field of knowledge concerned with measurement. Metrology includes all aspects of both theoretical and practical with reference to measurements, whatever their level of accuracy, and in whatever fields of science or what are the three different types of symbiosis they occur.
Since quality performance decisions are based on inspection and measurement, undesirable consequences using strength based approach in social work result if these tasks are not performed properly. Not only incorrect measurements lead to wrong decisions, which can have serious consequences, but also improper data evaluations can cause undesirable consequences.
Since Statistical Process Control is the utilization of statistical tools and methods to acquisite and to analyze data in order to monitor process capabilities, it is widely used in data evaluation. Quality control charts and the other statistical tools are used to analyze processes enabling appropriate actions to achieve improved or stabilized processes.
They help to ensure that the process operates efficiently and allow organizations to understand variation in their processes, differentiating common causes from special or assignable causes of variation. Metrology is a crucial science including its standards, systems of units, instruments, calibration procedures, uncertainties, inspection, and quality control topics in many industries such as automotive, aerospace, mechanical engineering, surface engineering, etc.
Like being in today, there will always be valuable researches in the field of metrology, with the help of technological developments to support the scientific researches in the future. Care taken in the reliability of measurements and their traceability will always be crucial. Metrology is such useful for humanity if it is conducted according to its rules and international standards.
Database relationship design example would like to thank the authors for their contributions and the publisher that provided this opportunity. Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution 3. Edited by Anil Akdogan. Impact of this chapter. Introduction Metrology, the science of measurement, is crucial for manufacturing technologies. Unit of measurement The most important condition of each measuring process and the manufacturing technique is the presence of units which are exactly defined according to the required quantities, and these units must be determined in accordance with internationally established rules.
Uncertainty of measurement The uncertainty of a measurement is a predicament that characterizes the range of values, including the true value of the measure. Calibration The purpose of calibration is to determine and document how much of the equipment is in error with the actual value. References 1. VIM; JCGM 2. Uncertainty of measurement: Part 3: Guide to the expression of uncertainty in measurement.
GUM; Measurement management systems: Requirements for measurement processes and measuring equipment. ISO Written By Anil Akdogan. Continue reading from the same book View All. Couto downloads. By Andrea De Marchi downloads.
Exactamente! Me parece esto la idea excelente. Soy conforme con Ud.