Verification of Computed Tomograph for Dimensional Measurements

Gapiński, Bartosz; Wieczorowski, Michał; Mietliński, Patryk; Mathia, T.

doi:10.1007/978-3-031-03925-6_13

Cited by 5 publications

(3 citation statements)

References 23 publications

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“…A very important component is the software, through which artifacts are removed on the one hand, and geometric features are calculated on the other. In addition, it is required to provide sufficiently stable thermal conditions inside for correct verification of metrological parameters [14]. Technical tomographs, due to their parameters, are intended for a wide variety of applications on a macro scale [15], but there are increasing ideas to apply them to the measurement of surface irregularities [16,17], primarily due to the possibility of faithfully reproducing re-entrant surfaces [18], which is unattainable for both contact and optical techniques.…”

Section: Measurement Technologies For Metrology 40mentioning

confidence: 99%

Towards Metrology 4.0 in Dimensional Measurements

Wieczorowski¹,

Trojanowska²

2023

Journal of Machine Engineering

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The paper presents the transformations taking place in length and angle metrology related to Metrology 4.0, a measurement strategy resulting from Industry 4.0. Metrology in an industrial conditions is gradually focusing more and more on advanced measurement systems. The coming reality will see the development of communication between systems and their components, as well as the individual sensors belonging to them. The Internet of Things and artificial intelligence as well as the possibility of using augmented or virtual reality will play a momentous role. The demand for these technologies results in the development of new specialized software and hardware solutions, the use and availability of which are diametrically different compared to the past. Also, the use of AI and cybersecurity in metrology is a topic that is receiving increasing attention. Metrology 4.0 is therefore becoming a very important part of the functioning of industry, changing the philosophy and organization of measurements carried out on the basis of new measurement techniques.

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Section: Measurement Technologies For Metrology 40mentioning

confidence: 99%

Towards Metrology 4.0 in Dimensional Measurements

Wieczorowski¹,

Trojanowska²

2023

Journal of Machine Engineering

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“…Micro-computed tomography (micro-CT) is an increasingly popular technique for geometric measurements [ 22 ]. It is beneficial for measuring parts with complex shapes and defined internal structures, often manufactured with additive techniques [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization of 5356 Aluminum Walls Produced by Wire Arc Additive Manufacturing (WAAM)

et al. 2023

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Wire arc additive manufacturing (WAAM) is renowned for its high deposition rate, enabling the production of large parts. However, the process has challenges such as porosity formation, residual stresses, and cracking when manufacturing aluminum parts. This study focuses on ana-lyzing the porosity of AA5356 walls manufactured using the WAAM process with the Fronius cold metal transfer system (Wels, Austria). The walls were machined to obtain specimens for tensile testing. The study used computed tomography and the tensile test to analyze the specimens’ porosity and its potential relation to tensile strength. The process parameters analyzed were travel speed, cooling time, and path strategy. In conclusion, increasing travel speed and cooling time significantly affects pore diameter due to the lower heat input to the weld zone. Porosity can be reduced when diminishing heat accumulation. The results indicate that an increase in travel speed produces a slight decrease in porosity. Specifically, the total pore volume diminishes from 0.42 to 0.36 mm3 when increasing the travel speed from 700 to 950 mm/min. The ultimate tensile strength and maximum elongation of the ‘back and forth’ strategy are slightly higher than those of the ‘go’ strategy. After tensile testing, the ultimate tensile strength and yield strength did not show any relation to the porosity measured by computed tomography. The percentage of the pore total volume over the measured volume was lower than 0.12% for all the scanned specimens.

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“…However, effective application of AI requires that a designer has selected and consequently applied a particular tolerancing system, and therefore, the differences between the ISO GPS system standards and ASME Y14.5 standards shall be investigated and uncovered. It shall be mentioned that the actual tolerancing systems are insufficient for all industrial applications and their further development taking into account new measuring technologies [15] is required. The fundamental deficit of the ISO GPS system and ASME Y14.5 is discussed in [16], and a path for enlarging the systems is shown.…”

Section: Introductionmentioning

confidence: 99%

ISO GPS and ASME GDT standards – differences and similarities in definitions of measurands

Humienny,

Zdrojewski

2023

Metrology and Measurement Systems

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Geometrical tolerances as tricky measurands are indicated. Crucial differences between the ISO and ASME geometrical tolerancing standards are discussed. It is demonstrated that, in many cases, both systems have different default rules. Moreover, for some identical graphical indications, interpretations are different. On the other hand, the standards contain similar arrangements in many cases. It is underlined that nowadays, due to the progressing globalisation, it is necessary to know these standards, bearing in mind that suppliers or customers specify requirements according to provisions from particular standards implemented in their companies. The above justifies the need for research exploring differences and similarities in both systems of standards. It is shown that the ISO GPS system standards, due to default independency principle, prefer to set production as cheaply as possible, while ASME, due to default provisions ( e.g. Rule #1, simultaneous requirement) puts stress on controlling product geometry more strictly, which is sometimes unnecessary.

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Verification of Computed Tomograph for Dimensional Measurements

Cited by 5 publications

References 23 publications

Towards Metrology 4.0 in Dimensional Measurements

Towards Metrology 4.0 in Dimensional Measurements

Characterization of 5356 Aluminum Walls Produced by Wire Arc Additive Manufacturing (WAAM)

ISO GPS and ASME GDT standards – differences and similarities in definitions of measurands

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