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Journal articles on the topic 'Calculation of tolerances'

Author: Grafiati

Published: 7 June 2025

Last updated: 16 July 2025

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1

G V, Madhavi Reddy, and Sreenivasulu Reddy A. "Assembly Gap Tolerance Calculation Using ANFIS and Cost Function Optimization." International Journal for Research in Applied Science and Engineering Technology 10, no. 2 (2022): 1111–17. http://dx.doi.org/10.22214/ijraset.2022.40460.

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Abstract: Tolerance plays a crucial role in the quality of a product. When different parts of an assembly are assembled, gap arises due to variation in dimensions. The tolerance for the gap is calculated using two methodologies: ANFIS and cost function optimization. In ANFIS the network is trained using mean dimensions, standard deviations as inputs and tolerances as output. The tolerances are predicted from the trained network. In cost function optimization, a cost function is formulated. The machinability of a part is calculated using Fuzzy Comprehensive Evaluation method. The tolerances are

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2

Nurlaily Charea, Wanda, and Nafisatus Sania Irbah. "Analysis of Volume Calculations for Clay Mining Excavation Plans Using The Surface to Surface Method." IOP Conference Series: Earth and Environmental Science 1418, no. 1 (2024): 012076. https://doi.org/10.1088/1755-1315/1418/1/012076.

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Abstract Calculating the volume of excavation is generally a large and complex problem for a project in an industry. This is because the accuracy of the volume calculation affects the project budget for the project provider. Calculating the excavation volume is important aspect of mine planning since it serves as a guide for hitting production goals in terms of both profit and technical success. The method commonly used in calculating excavation volume is surface to surface. To overcome this problem, a method or technique is needed to calculate the excavation volume that can provide accurate c

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3

Masyagin, Vasily, Ruslan Bazhenov, and Roman Artyukh. "Calculation of linear technological dimensions with adaptation." MATEC Web of Conferences 224 (2018): 01072. http://dx.doi.org/10.1051/matecconf/201822401072.

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Technological dimensional calculations are a necessary stage of engineering process and allow to determine machining allowance. The problem is that, when processing hard-to-treat materials on NC machines, it is necessary to provide optimal processing conditions for each workpiece based on reliable information on allowances at each operation. However, according to the existing methodology for calculation of technological dimensions and, accordingly, allowances, for the hypothetical workpiece with wide dimensional tolerances the technological dimensions and allowances are determined once, while

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Shkrabak, V. S., and N. I. Dzhabborov. "Probabilistic-statistical method for determining ergonomic tolerances of machine-tractor units with a gas-turbine engine." Traktory i sel hozmashiny 85, no. 1 (2018): 68–73. http://dx.doi.org/10.17816/0321-4443-66406.

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The justification and usage of tolerances for ergonomic parameters ensure safety and improve the conditions and safety of operators of machine-tractor units. The subject of the investigation is a development of the mathematical models for a determination of the ergonomic parameters of machine-tractor units with gas-turbine engines. The aim of the investigations is a development of the probabilistic-statistical method for a determination of the ergonomic tolerances of machine-tractor units equipped with gas turbine engines. The novelty of the researches consists in the developed mathematical mo

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Shilyaev, Sergey, Evgeniy Slashchev, Vladimir Osetrov, Igor Voyachek, and Rinat Shaikhov. "Determination of the parameters of typical multi-link dimensional chains (closing link is tension) using recurrent dependencies." MATEC Web of Conferences 329 (2020): 03015. http://dx.doi.org/10.1051/matecconf/202032903015.

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The existing approach to the use of the group interchangeability method during assembly, which are concentrated, has a number of significant drawbacks: 1) there are no formulas for calculating the upper and lower deviations of the component parts of the dimensional chain; 2) deviations are selected without taking into account the design of the component links (the method of equal tolerances is used); 3) the method is applicable for the number of links no more than three with a small number of groups. For other types of problems there is no algorithm, mathematical apparatus, and examples of cal

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Jolly, David, Leon Dunn, and John Kenny. "A clinical database to assess action levels and tolerances for the ongoing use of Mobius3D." Journal of Applied Clinical Medical Physics 18, no. 1 (2016): 59–65. http://dx.doi.org/10.1002/acm2.12009.

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AbstractIn radiation therapy, calculation of dose within the patient contains inherent uncertainties, inaccuracies, limitations, and the potential for random error. Thus, point dose‐independent verification of such calculations is a well‐established process, with published data to support the setting of both action levels and tolerances. Mobius3D takes this process one step further with a full independent calculation of patient dose and comparisons of clinical parameters such as mean target dose and voxel‐by‐voxel gamma analysis. There is currently no published data to directly inform toleranc

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Priya, Jacob. "Commissioning of the Mobius3D Independent Dose Verification System for Linear Accelerator." International Journal of Leading Research Publication 3, no. 6 (2022): 1–8. https://doi.org/10.5281/zenodo.14769786.

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Ensuring the accuracy of radiation therapy treatment plans is essential for patient safety and treatment efficacy and a secondary independent dose verification is an important for quality control. Mobius3D utilizes reference beam data and a collapsed cone convolution algorithm to calculate three-dimensional (3D) patient dose and automatically analyze dose-volume histograms. To verify its accuracy, we compared Mobius3D calculations with ion chamber measurements in an RW3 Slab Phantom for 50 helical intensity-modulated radiation therapy (IMRT) plans,1 yielding an average dose difference ratio of

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Cao, Shu Kun, Zhao Qian Li, Qing Gao, and Jing Xu. "Tolerance Optimal Design System Development and Application Based on UG Quick Stack Module." Applied Mechanics and Materials 10-12 (December 2007): 801–5. http://dx.doi.org/10.4028/www.scientific.net/amm.10-12.801.

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Computer-aided design tolerances (CADT) technology got far behind the CAD, CAPP, CAM etc, although there are many commercial tolerance software, but the tolerance optimal design still can’t be completed, which seriously affects the CAX technology's integral roles. Based on the tolerance computation function of the UG Quick Stack module, this paper accomplishes the product assembly relation modeling, tolerance distribution, locked circle calculation and so on, achieves the optimal design tolerance of whole product.

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Brahmia, Allaoua, Adlen Kerboua, Ridha Kelaiaia, and Ameur Latreche. "Tolerance Synthesis of Delta-like Parallel Robots Using a Nonlinear Optimisation Method." Applied Sciences 13, no. 19 (2023): 10703. http://dx.doi.org/10.3390/app131910703.

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Robotic systems require high accuracy in manipulating objects. Positioning errors are influenced by geometric tolerances and various sources. This paper introduces a new technique based on the interior-point algorithm optimisation method to allocate tolerances to the geometric parameters of a robot. This method consists of three steps. First, a method for modelling the kinematic problem as well as the geometric errors must be used. The Denavit–Hartenberg rule is the most suitable method for this modelling case. Then, a mathematical model for tolerance allocation is developed and used as a nonl

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10

GRUNER, GLENN. "CALCULATION OF Cpk UNDER CONDITIONS OF VARIABLE TOLERANCES." Quality Engineering 3, no. 3 (1991): 281–91. http://dx.doi.org/10.1080/08982119108918858.

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Jin, Qiu, and Shao Gang Liu. "Concurrent Tolerancing Design Based on Time Value of Manufacture-Quality Loss Cost." Applied Mechanics and Materials 217-219 (November 2012): 2598–602. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.2598.

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The traditional manufacturing cost-tolerance function is improved from the point of view of the time value of money, and this makes manufacturing cost in tolerances design more actual. A comprehensive mathematic model is constructed for the concurrent tolerance optimal design based on the time value of manufacture-quality loss cost. Purpose of the establishment of the model is equivalent calculation for cost-tolerance function and quality loss function of different time points, so as to make them calculated in the same time point, and concurrent tolerance optimal design is achieved. This modif

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SOTTEK, Roland, Julian BECKER, Hugo FASTL, et al. "Comparison of loudness calculation procedures according to ISO 532-1 and DIN 45631/A1." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, no. 5 (2024): 6107–15. http://dx.doi.org/10.3397/in_2024_3685.

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In 2017, the standard ISO 532-1:2017 "Method for calculating loudness - Part 1: Zwicker method" was published. The method described in this standard for calculating loudness of time-varying sounds is based on the algorithm published in DIN 45631/A1:2010 "Calculation of loudness level and loudness from the sound spectrum - Zwicker method - Amendment 1: Calculation of the loudness of time-variant sound". With the publication of the German translation of ISO 532-1:2017 (DIN ISO 532-1:2022) in 2022, there are currently two DIN standards available that describe the calculation of loudness using the

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Orosz, Tamás, Krisztián Gadó, Mihály Katona, and Anton Rassõlkin. "Automatic Tolerance Analysis of Permanent Magnet Machines with Encapsuled FEM Models Using Digital-Twin-Distiller." Processes 9, no. 11 (2021): 2077. http://dx.doi.org/10.3390/pr9112077.

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Tolerance analysis is crucial in every manufacturing process, such as electrical machine design, because tight tolerances lead to high manufacturing costs. A FEM-based solution of the tolerance analysis of an electrical machine can easily lead to a computationally expensive problem. Many papers have proposed the design of experiments, surrogate-model-based methodologies, to reduce the computational demand of this problem. However, these papers did not focus on the information loss and the limitations of the applied methodologies. Regardless, the absolute value of the calculated tolerance and t

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14

Yang, Zhaohui, Wenrong Yang, Tianshi Gao, and Yu Zhang. "Tolerance analysis method considering multifactor coupling based on the Jacobian–torsor model." Advances in Mechanical Engineering 14, no. 12 (2022): 168781322211402. http://dx.doi.org/10.1177/16878132221140215.

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Assembly quality affects the performance of mechanical products and reasonable tolerance designs are central to assembly quality. Unreasonable tolerance design leads to the mechanical equipment performance degradation under complex operating conditions. This study developed a novel tolerance analysis method that considers the influence of temperature, load, and other environmental factors based on the Jacobian–torsor and skin models. First, the deformation caused by multifactor coupling was analyzed using the finite element method, and the feature surface of deformation is extracted. Second, t

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Leonov, O. A., Yu G. Vergazova, and U. Yu Antonova. "THE CALCULATION OF THE DEPENDENT TOLERANCE ALIGNMENT REPAIR SHAFTS GEAR BOXES." Traktory i sel hozmashiny 84, no. 3 (2017): 50–53. http://dx.doi.org/10.17816/0321-4443-66285.

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Distortion of the shape of the component parts leads to a decrease in the operational properties of these parts Thus, in movable joints the deviation of the component parts from the correct cylindrical shape leads to an inadequacy of its movements, rapid wear due to contact over a limited surface. In fixed joints, distortion of the shape leads to uneven tension in the joints, because of this, the strength of the joint, the tightness and the accuracy of the centering decrease. Distortion form also affects labor and assembly accuracy, increases the amount of trimming work affects the accuracy of

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16

Liu, J., and Guang Lin Wang. "Pneumatic Measurement Approach for Form Tolerances of Inner Hole in Spool Valve." Applied Mechanics and Materials 42 (November 2010): 480–84. http://dx.doi.org/10.4028/www.scientific.net/amm.42.480.

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Pneumatic measurement and genetic algorithm based approach for form tolerances, including the cylindricity error, circularity error and straightness error of axis, of inner hole in spool valve are studied in this paper. A differential pressure type of pneumatic comprehensive measurement approach is put forward, which applies the pneumatic nozzle scanning measurement principle. The minimum zone evaluation and calculation approach for form tolerances based on an improved genetic algorithm is presented considering the characteristics of the measuring point. Finally, the automatic measurement expe

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Lin, J., G. Thimm, and G. A. Britton. "Alternative design specifications of prismatic parts for manufactur ability." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 217, no. 4 (2003): 569–72. http://dx.doi.org/10.1243/095440503321628242.

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It is argued that design dimension specifications contribute to the manufacturability of a part and should therefore be subjected to optimization, targeting minimal tolerance stacks in a process plan. The optimality of a process plan, and therefore of a design, depends on the manufacuring environment. As this may change or be unknown at the deisgn stage, this paper proposes a mathematical approach to redimension a design without imparing the functionality of the part. The calculation of tolerances for substitute dimensions is emphasized, depending on the role of a dimension in the design.

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18

Komarov, V. A., and A. V. Grigoryev. "Modeling of controlled accuracy parameters of production machinery assemblies depending on the basic parts wear." Traktory i sel hozmashiny 80, no. 12 (2013): 16–19. http://dx.doi.org/10.17816/0321-4443-65691.

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Sequence of wear calculation for basic parts of production machinery and their permissible values is presented. The models allowing to determine the specific value of permissible parameters tolerances are given.

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19

Pantalienko, L. "Calculation of the optimal parameters of corrective elements in induction acceleration systems." Energy and automation, no. 2(54) (June 22, 2021): 107–14. http://dx.doi.org/10.31548/energiya2021.02.107.

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The formulations of a number of optimization problems for a linear induction acceleration system with respect to the adjustment parameters are considered. The dynamics of the transverse motion of electrons in the horizontal plane is investigated in the presence of given energy values for each resonator period: the particles at the initial moment of time are somewhat displaced relative to the accelerator axis (we neglect the displacements of the ends of the solenoids and the centers of the accelerating gaps relative to the accelerator axis). A connection is established between the initial and f

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20

Shi, Zhao Yao, Jia Chun Lin, and Michael Paul Krystek. "Uncertainty Analysis of Helical Deviation Measurements." Key Engineering Materials 437 (May 2010): 212–16. http://dx.doi.org/10.4028/www.scientific.net/kem.437.212.

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The helix is a complex geometrical element. During the process of a dynamical measurement of the helical deviations, many factors, including the machine and the environment, lead to measurement errors. Although ISO as well as national standards stipulate the tolerances and assessment methods for helical deviations, these standards contribute little to the uncertainty calculations concerning such measurements. According to the Guide to the Expression of Uncertainty in Measurement (GUM), all measurement results must have a stated uncertainty associated to them. But in most cases of helical devia

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21

Liu, Guanghao, Meifa Huang, and Zhemin Tang. "A Tolerance Type Screening Method Based on Similarity Evaluation." Applied Sciences 15, no. 5 (2025): 2272. https://doi.org/10.3390/app15052272.

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In the context of automatic generation methods for tolerance specifications, the current approach entails designers subjectively selecting geometric tolerances suitable for annotation from the tolerance types generated through automatic reasoning. This process is susceptible to the occurrence of mismatches between tolerance types and product functionality. To address this issue, this paper proposes a similarity calculation and evaluation method for screening tolerance types, which retrieves tolerance types that meet design requirements from resource cases. The proposed method commences with th

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22

Bošnjak, Bruno, and Mario Stuhne. "Analysis and experimental verification of static tilting behaviour of CTC in transformer windings." Journal of Energy - Energija 63, no. 1-4 (2022): 52–62. http://dx.doi.org/10.37798/2014631-4163.

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This paper presents a numerical model and experimental verification of the critical tilting force calculation for transformer winding conductors under static axial pressure. For the purposes of this investigation a structural finite element method model of a non-epoxy bonded continuously transposed conductor used for the construction of transformer windings was developed. The mechanical behaviour of two different transformer winding conductors under static axial pressure was simulated. The radial position of CTCs was varied according to manufacturer tolerances in order to closer correspond to

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23

Lealin, Stanislav. "Comparison and evaluation of classical methods of dimensional chains theory and their modern analogues." Journal of Engineering Science 30, no. 4 (2023): 20–30. https://doi.org/10.52326/jes.utm.2023.30(4).02.

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The requirements for the quality, reliability, and cost-effectiveness of engineering products and engineering production itself are constantly improving. As a result, there is an increasing demand for the quality of design and technological preparation of production, which includes classical dimensional analysis as its foundation. The Classical Method of dimensional analysis calculation represents a comprehensive set of computational and analytical actions carried out during the development and analysis of projects and technological processes, including: the construction of specialized dimensi

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Li, J. K., C. Zhang, and Y. Z. Zhang. "Operational Dimensions and Tolerances Calculation in CAPP Systems for Precision Manufacturing." CIRP Annals 38, no. 1 (1989): 403–6. http://dx.doi.org/10.1016/s0007-8506(07)62733-4.

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Timofeev, B. P., N. T. Dang, and M. H. Tran. "THE CALCULATION OF BACKLASH IN THE GEARS BY USING THE MONTE CARLO METHOD." Kontrol'. Diagnostika, no. 265 (July 2020): 42–47. http://dx.doi.org/10.14489/td.2020.07.pp.042-047.

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This paper is devoted to ensuring normal lateral clearance during the normalization of manufacturing errors of gear wheels and non-gear transmission elements. The task is complicated by the fact that GOST 1643–81 sets tolerances and maximum deviations relative to the working axles of the gears. The methods of calculating the lateral clearance of spur gears are considered. As the influencing factors on the lateral clearance, the thermal expansion of the link materials, the deviation of the interaxial distance of the wheels, the deviation of the engagement pitch, the radial run-out of the gear c

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Timofeev, B. P., N. T. Dang, and M. H. Tran. "THE CALCULATION OF BACKLASH IN THE GEARS BY USING THE MONTE CARLO METHOD." Kontrol'. Diagnostika, no. 265 (July 2020): 42–47. http://dx.doi.org/10.14489/td.2020.07.pp.042-047.

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This paper is devoted to ensuring normal lateral clearance during the normalization of manufacturing errors of gear wheels and non-gear transmission elements. The task is complicated by the fact that GOST 1643–81 sets tolerances and maximum deviations relative to the working axles of the gears. The methods of calculating the lateral clearance of spur gears are considered. As the influencing factors on the lateral clearance, the thermal expansion of the link materials, the deviation of the interaxial distance of the wheels, the deviation of the engagement pitch, the radial run-out of the gear c

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Chen, Hua, and Xin Li. "Tolerance analysis of involute spur gear from the perspective of design." Mechanics & Industry 23 (2022): 16. http://dx.doi.org/10.1051/meca/2022013.

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The existing gears’ tolerance standards are formulated from the point of view of manufacturing and measurement. Tolerance categories are numerous. What is more, they have no correlation with each other. Tolerance analysis and optimization of gear and gear set are difficult. Module, pressure angle and center distance are the most important parameters for gears. Their variations directly affect the transmission precision of gears. Through careful research of the influence of deviations of module and pressure angle, a novel method of gear tolerance analysis is proposed in this paper from the pers

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Li, Chun Li, Jian Xin Yang, Jun Ying Wang, and Wen Xin Ma. "A Comparison Study of Small Displacement Torsor and Analysis Line Methods for Functional Tolerance Analysis." Advanced Materials Research 605-607 (December 2012): 358–64. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.358.

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Tolerance analysis plays an important role in the stage of product design and has great influences on the product assembly quality and manufacturing costs. Two major methods are used for three-dimensional functional tolerance analysis, which are small displacement torsor and analysis line. A positioning mechanism with two parts is presented for tolerance accumulation calculation. Through the comparison of these two methods on computation processes and results, analysis line method can establish the explicit relationship between the functional requirement and the tolerances of the influential p

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Гошовец, С. В. "Investigation of the Effect of Reducing the Thickness of Road Surfacing Layers Within the Tolerance Limits on the Reliability and Durability of Highways." НАУЧНЫЙ ЖУРНАЛ СТРОИТЕЛЬСТВА И АРХИТЕКТУРЫ, no. 3(59) (October 1, 2020): 43–57. http://dx.doi.org/10.36622/vstu.2020.59.3.004.

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Состояние проблемы. Считается, что уменьшение толщины слоя в пределах допуска не оказывает существенного влияния на надежность и долговечность дорожной одежды. Так как конструкция дорожной одежды, как правило, состоит из нескольких слоев, можно предположить, что занижение толщины слоев в пределах допуска может оказать негативное влияние на прочность конструкции в целом. Применительно к отечественным нормам проектирования и строительства данное предположение остается не изученным. Результаты. Проведен анализ показателей, характеризующих толщину слоя, и практик назначения строительных допусков.

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Bazuev, Mikhail, Vitaly Koksharov, and Alexey Naichuk. "RESEARCH OF THE INFLUENCE OF THE DISPERSION OF THE ACTUAL LINK SIZES ON THE TRANSMISSION FUNCTION OF THE MECHANISM OF ROD SEMI-AUTOMATICS." Perm National Research Polytechnic University Aerospace Engineering Bulletin, no. 64 (2021): 67–73. http://dx.doi.org/10.15593/2224-9982/2021.64.07.

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In this work, the analysis of real deviations from the nominal dimensions links, and their cumulative effect on the final movement of the chain linkage element rolling semiautomatic mechanism. The considered mechanism was converted to an equivalent one, consisting of lower translational and rotational kinematic pairs. In the course of the structural analysis, the mechanism was divided into Assur groups in order to simplify further kinematic calculations. The calculation was carried out sequentially for each of the structural groups separately. Based on this, a mathematical model of the kinemat

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Sun, Wei, Xiaokai Mu, Qingchao Sun, Zhiyong Sun, and Xiaobang Wang. "Analysis and optimization of assembly precision-cost model based on 3D tolerance expression." Assembly Automation 38, no. 4 (2018): 497–510. http://dx.doi.org/10.1108/aa-10-2017-137.

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PurposeThis paper aims to comprehensively achieve the requirements of high assembly precision and low cost, a precision-cost model of assembly based on three-dimensional (3D) tolerance is established in this paper.Design/methodology/approachThe assembly precision is related to the tolerance of parts and the deformation of matching surfaces under load. In this paper, the small displacement torsor (SDT) theory is first utilized to analyze the manufacturing tolerances of parts and the assembly deformation deviation of matching surface. In the meanwhile, the extracting method of SDT parameters is

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Yan, Ming, Zheren Zhang, and Zheng Xu. "Calculation of Main Circuit Steady-State Parameters for Capacitor Commutated Converter System." Applied Sciences 13, no. 2 (2023): 1171. http://dx.doi.org/10.3390/app13021171.

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The calculation of the main circuit parameters is the basic part of the engineering design for high voltage direct current (HVDC) transmission systems. Compared to the conventional line commutated converter (LCC), the application of the capacitor commutated converter (CCC) can reduce the probability of commutation failures and the shunt capacitor reactive compensation. This paper proposes a calculation method of main circuit parameters for the CCC-based HVDC system. Firstly, the topology of a CCC-HVDC transmission system is described. Secondly, based on the steady-state mathematical model of t

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Prodous, O. A., P. P. Yakubchik, L. D. Terekhov, and D. I. Shlyichkov. "Hydraulic calculation improvement of polymer and metal-polymer pressure pipelines." Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture 26, no. 1 (2024): 140–51. http://dx.doi.org/10.31675/1607-1859-2024-26-1-140-151.

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The relevance of this paper is determined by the pipe manufacturing from polymer and metal-polymer materials, that requires hydraulic calculations.Purpose: The purpose is to describe reasons affecting the accuracy of the hydraulic calculation of pipes made of polymer materials and show changes in their hydraulic potential, depending on these reasons.Methodology/approach: Assessment of the influence of process parameters on hydraulic characteristics, classical equations of hydraulic calculation of water pipes.Research findings: The paper shows the influence of technological tolerances for the o

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Bezjazychnyj, V. F., K. A. Vinogradov, O. V. Vinogradova, and V. A. Fadeev. "SYSTEM ANALYSIS AND SYNTHESIS OF GAS-TURBINE STAGES AERODYNAMIC PERFORMANCE." Spravochnik. Inzhenernyi zhurnal, no. 288 (March 2021): 15–21. http://dx.doi.org/10.14489/hb.2021.03.pp.015-021.

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A method for system improvement of gas turbine flow-passage at the preliminary design stage is proposed. The results of 1D aerodynamic calculation is the reference information. Based on the obtained structural parametrical models a wide range of analysis, synthesis and optimization problems can be solved, as well as uncertainty quantification problem for turbine blade permissible manufacture tolerances in batch production.

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Anufriev, Egor, Vladimir Mazur, and Aleksey Pudalov. "USING MATHEMATICAL MODELING FOR MULTIPARAMETRIC ANALYSIS OF ELECTRONIC CIRCUITS WITH A LINEAR ACTIVE DEVICE." Scientific Papers Collection of the Angarsk State Technical University 2024, no. 1 (2024): 11–19. http://dx.doi.org/10.36629/2686-7788-2024-1-11-19.

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It is proposed to use matrix methods for mathematical modeling of the operation of electronic analog linear devices. They allow using computational tools to obtain results with high calculation speed and acceptable accuracy. For example, a scheme of an active second-order electronic filter based on an operational amplifier is proposed. A multiparametric analysis of the transfer function based on the primary parameters of the electronic circuit is proposed. The proposed method for analyzing linear active electronic circuits based on the conduction matrix can significantly reduce the calculation

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Muholzoev, A. V., and V. B. Masyagin. "Probabilistic Calculation of Tolerances of the Dimension Chain Based on the Floyd-warshall Algorithm." Procedia Engineering 150 (2016): 959–62. http://dx.doi.org/10.1016/j.proeng.2016.07.070.

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Arutyunov, Denis V. "RESEARCH OF THE METHOD OF ORTHOPHOTOMAP DECIVED FROM UAV IMAGES WITH LARGE TILT ANGLES." Interexpo GEO-Siberia 6 (May 21, 2021): 12–17. http://dx.doi.org/10.33764/2618-981x-2021-6-12-17.

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The article reflects the method of orthophotomap decivetion. The flow diagram of UAV data processing in Photomod is presented. The final processing results are presented in the form of an orthophotomap. The technology for constructing point objects for further error analysis is presented. The calculation of the plotted points in Excel for further error analysis was performed. Errors based on the tolerances that are proposed in the instructions for topographic survey are analyzed.

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O., Kazmirovych, and Kazmirovych R. "CALCULATION OF AREAS OF OVERLAPPING OF INKS OF RASTER ELEMENTS BY PRINTING FROM POINT TO POINT." Technological Complexes 1, no. 15 (2018): 78–83. https://doi.org/10.5281/zenodo.2669576.

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In article the directions of moire’s correction in multi-ink imprints by the method printing a point to a point. The algorithm of calculation of areas of overlapping of inks of square, rhombic and circular forms of raster elements by printing a point to a point, which with using the Nyberg-Neigebauer equations permission proceed directly to the calculation of the color coordinates of separate sections of the raster imprint and determine the exact tolerances for the accuracy of the combination of the imprints for certain types of printing products are proposed. The determine the error of

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Andris, Peter, Tomáš Dermek, Daniel Gogola, Jiří Přibil, and Ivan Frollo. "Analysis of NMR Signal for Static Magnetic Field Standard." Measurement Science Review 22, no. 2 (2022): 80–83. http://dx.doi.org/10.2478/msr-2022-0010.

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Abstract This article describes the analysis of the NMR (Nuclear Magnetic Resonance) stabilizer signal. Magnetic field of the standard is created using an electromagnet. Sufficiently high stability of the magnetic field is achieved with the help of a stabilizer with an NMR probe. The NMR phenomenon makes possible very accurate measurements of the static magnetic field, but the resulting stability depends also on supporting electronics. An analysis has been done and tolerances of the measured quantities have been estimated. The calculated tolerances indicate the needed features of the material.

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Zhou, Chuanyuan, Zhenyu Liu, Chan Qiu, and Jianrong Tan. "A quasi-Monte Carlo statistical three-dimensional tolerance analysis method of products based on edge sampling." Assembly Automation 41, no. 4 (2021): 501–13. http://dx.doi.org/10.1108/aa-09-2020-0144.

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Purpose The conventional statistical method of three-dimensional tolerance analysis requires numerous pseudo-random numbers and consumes enormous computations to increase the calculation accuracy, such as the Monte Carlo simulation. The purpose of this paper is to propose a novel method to overcome the problems. Design/methodology/approach With the combination of the quasi-Monte Carlo method and the unified Jacobian-torsor model, this paper proposes a three-dimensional tolerance analysis method based on edge sampling. By setting reasonable evaluation criteria, the sequence numbers representing

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Makarov, Pavlo M. "The Choice of a Rational Technology for Manufacturing the Hydrogenerators-Motors Rotor Rim." Journal of Mechanical Engineering 26, no. 4 (2023): 29–37. http://dx.doi.org/10.15407/pmach2023.04.029.

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The object of research in the paper is the technology of manufacturing segments of the rotor rim of large hydrogenerators-motors. The subject of study is the design and geometrical state of the rotor rim during the operation of hydraulic units. The goal is to make a three-dimensional mechanical calculation of the rotor segment for the further determination of the most optimal technology for the rotor rim manufacturing. The following tasks are set: to study the peculiarities of the manufacturing technology of the rotor rim segments; to perform an analytical calculation and a three-dimensional c

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Okuda, S., K. Ikegami, T. Yoshida, E. Nosaka, and H. Nakanishi. "Calculation of manufacturing tolerances of an electron gun by a pseudo-three dimensional field analysis." IEEE Transactions on Magnetics 25, no. 4 (1989): 2858–60. http://dx.doi.org/10.1109/20.34306.

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Marincic, A., and D. Miletic. "Calculation of parameter tolerances of near-zero dispersion step-index fiber for a specified bandwidth." Microwave and Optical Technology Letters 5, no. 6 (1992): 273–75. http://dx.doi.org/10.1002/mop.4650050610.

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Yang, Cheng-Jung. "Optimizing Manufacturing Parameters of DLP Machine by Taguchi Method and Desirability Approach." Machines 10, no. 10 (2022): 901. http://dx.doi.org/10.3390/machines10100901.

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With less manufacturing time and less photosensitive resin consumed, Digital Light Processing of the bottom-up process is more forward-looking than the top-down one in terms of 3D printing technology. In view of differences in the optimization of machine printing parameters for objectives with different quality requirements, this paper discusses how the control factors consisting of machine printing parameters can obtain objects with a high quality through an experimental design with full considerations of the separation force and dimensional tolerance. By taking the titling separation mechani

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Semenenko, Oleg, Roman Lukash, Lilia Semenenko, Yuzef Dobrovolskyi, and Sergii Stolinets. "METHODICAL APPROACH TO CALCULATING THE COST OF APPLICATION OF THE NAVAL FORCES OF THE ARMED FORCES OF UKRAINE." Collection of scientific works of Odesa Military Academy, no. 15 (September 30, 2021): 185–96. http://dx.doi.org/10.37129/2313-7509.2021.15.185-196.

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The decision on the further development of the Ukrainian Navy should be made at the state level, as the development of the Navy is inextricably linked with the development of high-tech and science-intensive industries. Construction is a long process that requires long-term planning, which is possible only at the strategic, state level. In addition, the implementation of the shipbuilding program requires significant amounts of financial resources, which requires not just to consider them in total defense spending, but as a separate program. Also, Ukraine today must decide how to protect and def

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Frosio, Thomas, Thomas Bonaccorsi, and Patrick Blaise. "Manufacturing Data Uncertainties Propagation Method in Burn-Up Problems." Science and Technology of Nuclear Installations 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/7275346.

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A nuclear data-based uncertainty propagation methodology is extended to enable propagation of manufacturing/technological data (TD) uncertainties in a burn-up calculation problem, taking into account correlation terms between Boltzmann and Bateman terms. The methodology is applied to reactivity and power distributions in a Material Testing Reactor benchmark. Due to the inherent statistical behavior of manufacturing tolerances, Monte Carlo sampling method is used for determining output perturbations on integral quantities. A global sensitivity analysis (GSA) is performed for each manufacturing

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Lee, S. J., and B. J. Gilmore. "The Determination of the Probabilistic Properties of Velocities and Accelerations in Kinematic Chains With Uncertainty." Journal of Mechanical Design 113, no. 1 (1991): 84–90. http://dx.doi.org/10.1115/1.2912755.

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A probabilistic model and methods to determine the means and variances of the velocity and acceleration within stochastically-defined planar pin jointed kinematic chains are presented. The presented model considers the effect of tolerances on link length and radial clearance and uncertainty of pin location as a net effect on the link’s effective length. The determination of the mean values and variances of the output variables requires the calculation of sensitivities of secondary variables with respect to the random variables. It is shown that this computation is straightforward and can be ac

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Jacqmin, Dustin J., Jeremy S. Bredfeldt, Sean P. Frigo, and Jennifer B. Smilowitz. "Implementation of the validation testing in MPPG 5.a “Commissioning and QA of treatment planning dose calculations–megavoltage photon and electron beams”." Journal of Applied Clinical Medical Physics 18, no. 1 (2016): 115–27. http://dx.doi.org/10.1002/acm2.12015.

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AbstractThe AAPM Medical Physics Practice Guideline (MPPG) 5.a provides concise guidance on the commissioning and QA of beam modeling and dose calculation in radiotherapy treatment planning systems. This work discusses the implementation of the validation testing recommended in MPPG 5.a at two institutions. The two institutions worked collaboratively to create a common set of treatment fields and analysis tools to deliver and analyze the validation tests. This included the development of a novel, open‐source software tool to compare scanning water tank measurements to 3D DICOM‐RT Dose distribu

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Li, Chunxi, and Wenjun Hou. "Analysis of Assembly Tolerance Based on Assembly Constraint Information Model." Mathematical Problems in Engineering 2021 (August 9, 2021): 1–18. http://dx.doi.org/10.1155/2021/7438966.

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Mechanical products are composed of two or more parts. The geometric tolerance and dimensional tolerance of each feature in part will affect the assembly performance of the product, which are accumulated and propagated between assembly fit and parts. In this paper, through the secondary development of CAD software, the B-rep model of parts is obtained. The model information is decomposed and simplified based on geometric features to obtain the key information of parts in the assembly process, simplify the operation, and improve the accuracy. Through a directed graph network, the transmission m

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Pośpiech, Janusz. "Calculation method for deformations of stand and rolls to obtain products with small dimension of tolerances." Journal of Materials Processing Technology 166, no. 3 (2005): 417–22. http://dx.doi.org/10.1016/j.jmatprotec.2004.09.042.

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