Application of Material Measure in Measurements: Theoretical Aspects

2021 ◽  
pp. 261-269
Author(s):  
Vitaliy Babak ◽  
Artur Zaporozhets ◽  
Yurii Kuts ◽  
Leonid Scherbak ◽  
Volodymyr Eremenko
Keyword(s):  
Material Measure

scholarly journals Effect of a Misidentified Centre of a Type ASG Material Measure on the Determined Topographic Spatial Resolution of an Optical Point Sensor

Metrology ◽  
2022 ◽  
Vol 2 (1) ◽  
pp. 19-32
Author(s):  
Janik Schaude ◽  
Andreas Christian Gröschl ◽  
Tino Hausotte
Keyword(s):  
Spatial Resolution ◽  
Good Practice ◽  
Practice Guide ◽  
Measurement And Evaluation ◽  
Period Limit ◽  
Material Measure ◽  
Iso 25178

The article presents the determination of the topographic spatial resolution of an optical point sensor. It is quantified by the lateral period limit DLIM measured on a type ASG material measure, also called (topographic) Siemens star, with a confocal sensor following both a radial measurement and evaluation, as proposed by ISO 25178-70, and the measurement and subsequent evaluation of two line scans, proposed by the NPL Good Practice Guide. As will be shown, for the latter, an only slightly misidentified target centre of the Siemens star leads to quite significant errors of the determined DLIM. Remarkably, a misidentified target centre does not necessarily result in an overestimation of DLIM, but lower values might also be obtained. Therefore, a modified Good Practice Guide is proposed to determine DLIM more accurately, as it includes a thorough determination of the centre of the Siemens star as well. While the measurement and evaluation effort is increased slightly compared to the NPL Good Practice Guide, it is still much faster than a complete radial measurement and evaluation.

Money metrology

2020 ◽  
pp. 42-50
Author(s):  
V. N. Krutikov ◽  
V. V. Okrepilov
Keyword(s):  
Gold Standard ◽  
Supply And Demand ◽  
Precious Metals ◽  
Legal Metrology ◽  
Important Principle ◽  
Monetary System ◽  
Stage Of Development ◽  
Fixed Weight ◽  
Long Time ◽  
Material Measure

The influence of the provisions of legal metrology on the formation and functioning of the monetary environment in market conditions is studied. It is shown that the use of material (reference) measures for determining the value of goods in monetary units makes it possible to form a stable monetary system, equal for all market participants. This system can reasonably be attributed to information measuring systems. Systems based on the use of constant material measures that determine the value of goods and money in international trade have been formed and functioned for a long time. In the XIX-XX centuries, the monetary system, in which a fixed weight of gold served as the material measure of money, was called the “gold standard”. In the 1970s, this system was abandoned without objective reasons. Nowadays, many people believe that the main reason is the uncontrolled issuance of paper money (US dollars). As a result, the material measure of money was replaced by a monetary measure. The money of a number of selected countries turned out to be a measure of the national currencies of other countries. Then money was made a commodity – an object of market trading, the price of which is determined by supply and demand. Thus, the most important principle of metrology was violated – the invariability (constancy) of the measure of system objects. The resulting monetary system became unstable. This situation has led to an increase in the number of proposals for a return to the gold standard. The analysis carried out in the paper confirmed the relevance of these proposals. At the present stage of development of metrology, it is advisable to explore the possibility of a broader (not only at the expense of precious metals) resource provision of material monetary measures, in particular, to consider the possibility of using materials and (or) goods that are in high demand in the international market as monetary measures.

Recording Illegal Material Measure

2015 ◽  
Author(s):  
Michelle Drouin ◽  
Daniel A. Miller
Keyword(s):  
Material Measure

Exposure to Online Sexual Material Measure

2014 ◽  
Author(s):  
Anna Ševčíková ◽  
Jan Šerek ◽  
Monica Barbovschi ◽  
Kristian Daneback
Keyword(s):  
Material Measure

RkRk material measure

2019 ◽  
Vol 86 (9) ◽  
pp. 478-486 ◽  
Author(s):  
Jörg Seewig ◽  
Matthias Eifler ◽  
Dorothee Hüser ◽  
Rudolf Meeß
Keyword(s):  
Surface Profile ◽  
Profile Data ◽  
Measuring Process ◽  
Suitable Material ◽  
Precision Turning ◽  
Functional Characterisation ◽  
Ultra Precision ◽  
Measured Profile ◽  
Material Measure ◽  
Comparison Measurements

AbstractThe standard ISO 13565-2 defines the Rk parameters for the functional characterisation of technical surfaces. So far, no particular material measures for the calibration of these parameters have been defined in the international standardization. For the application and the functional behaviour of technical surfaces the Rk parameters however have a critical significance, so there is a demand by the industry to calibrate these parameters as they are increasingly applied for the quality assessment of workpieces. In the present paper, a proposal for suitable material measures is presented. An algorithm is described, which transforms the data of a real measured profile in a way that the exact defined parameters of Rk, Rpk and Rvk are equated. The material measures geometry corresponds to its later application and the target parameters are almost freely selectable. The approach for transforming surface profile data with the aid of the Abbott curve is introduced generically, solves an inverse problem and considers the influences from the manufacturing and measuring process. The designed material measure is manufactured with the aid of ultra-precision turning. In matters of the aspired industrial application, comparison measurements are carried out in order to examine the practical abilities of the material measure and the repeatability of the approach is proven.

scholarly journals A Novel Measurement Standard for Surface Roughness on Involute Gears

2021 ◽  
Vol 11 (21) ◽  
pp. 10303
Author(s):  
Felix Steinmeyer ◽  
Dorothee Hüser ◽  
Rudolf Meeß ◽  
Martin Stein
Keyword(s):  
Surface Roughness ◽  
Physical Measurement ◽  
Roughness Measurement ◽  
Measurement Standard ◽  
Coordinate Measurement ◽  
Measurement Systems ◽  
Planar Surfaces ◽  
Involute Gears ◽  
Material Measure ◽  
Roughness Measurements

Although manufacturers of coordinate measurement systems and gear measurement systems already provide instruments that enable an end-of-line-monitoring of the roughness properties of gears, the roughness measurement on gear flanks still lacks traceability with respect to the standardised SI-units. There is still a gap between well standardised roughness measurements on planar surfaces and gear measurements on involutes. This gap is bridged by a novel physical measurement standard (PMS), also referred to as material measure, for roughness measurements on involute gears that has been developed at the Physikalisch-Technische Bundesanstalt (PTB). The necessary transformations between the systems of roughness and gear measurements have been implemented. The measurement standard itself represents calibrated roughness values for the parameters Ra, Rz, Rq, Rk, Rpk and Rvk and Mr1 and Mr2. Furthermore, the PMS can be measured both with classic profilometers as well as gear measurement systems with integrated roughness probes.

Development and Evaluation of New Material Measure with Chirp Form for Surface Texture Instruments

2018 ◽  
Vol 12 (1) ◽  
pp. 97-104
Author(s):  
Ichiro Yoshida ◽  
Yuichi Okazaki ◽  
Noriyuki Kato ◽  
Nobuyuki Tanaka ◽  
Kozo Miyamoto ◽  
...  
Keyword(s):  
Surface Texture ◽  
Manufacturing System ◽  
Random Wave ◽  
Gaussian Filters ◽  
Wave Forms ◽  
New Material ◽  
Material Measure ◽  
Study Designs ◽  
Engineering Physics ◽  
Attenuation Characteristics

This study designs and develops a new material measure with a chirp form. Material measures are measurement standards for calibration, verification, and inspection. Since material measures are essential for ensuring the traceability of surface texture instruments, we have been developing a manufacturing system to provide them. ISO 5436-1:2000 contains material measures with sinusoidal wave forms, random wave forms, triangular wave forms, trapezoidal wave forms, cusp forms, rectangular forms, etc. However, ISO 5436-1:2000 does not contain a material measure with a chirp (sweep) form. Therefore, we propose a material measure with a chirp form. Chirp signals are frequently used for various analyses in the fields of mechanical engineering, electrical engineering, physics, and others. The primary purpose of the proposed material measure with a chirp form is to rapidly and simply examine the characteristics and capabilities of implemented Gaussian filters. We designed the surface form of the material measure as a logarithmic chirp form to maximize the utility of the primary purpose in this study. The wavelength of the manufactured chirp form varies logarithmically in the lateral (x) direction. This paper presents the following five points: 1) the design and development of the material measure with a chirp form, 2) the application of the proposed material measure to the examination of the attenuation characteristics of implemented Gaussian filters, 3) the application of the proposed material measure to obtain the deformation of the roughness form due to the implemented Gaussian filters, 4) the application of the proposed material measure to specify the algorithm of the implemented Gaussian filters, and 5) the possibility of another application of the material measure with a chirp form.

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