Results 221 to 230 of about 37,312 (263)

A geometric approach of form tolerance formulation and evaluation

Proceedings. 1998 IEEE International Conference on Robotics and Automation (Cat. No.98CH36146), 2002
We first present a unified geometric formulation of form tolerances using an extended least-squares (E-LSQ) approach. Then, using properties of configuration space of symmetric features an iterative algorithm is developed to solve the E-LSQ problem. Simulation results show that the algorithm not only keeps computational efficiency of the least-squares ...
Jianbo Gou, Yunxian Chu, Zexiang Li 0001
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Error-tolerant geometric graph similarity and matching

Pattern Recognition Letters, 2019
Abstract Geometric graph matching is the process of evaluating the similarity between geometric graphs, where each vertex has an associated coordinate point in a plane. Exact matching computes a strict correspondence between two geometric graphs, whereas in error-tolerant matching an approximate similarity between two geometric graphs is computed. In
Shri Prakash Dwivedi, Ravi Shankar Singh
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Economic Aspects in the Inspection of Multiple Geometric Tolerances

Volume 4: Advanced Manufacturing Processes; Biomedical Engineering; Multiscale Mechanics of Biological Tissues; Sciences, Engineering and Education; Multiphysics; Emerging Technologies for Inspection and Reverse Engineering; Advanced Materials and Tribology, 2012
Recent years have seen an increase in the adoption of geometric tolerances. Often it is possible to find several geometric tolerances defined on a single part. However, this poses inspection issues: the values of the geometric errors may be interrelated; therefore, the presence of multiple tolerances should be considered in inspection design.
PETRO', STEFANO, MORONI, GIOVANNI
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Statistical Analysis of Geometrical Tolerances: A Case Study

Quality Engineering, 2005
ABSTRACT Tolerancing is one of the most important but complex activities in design. Tolerance information takes place at every phase of design activity. It represents the fundamental link between the theoretical model of the mechanical product and the actual one.
Bennis, Fouad, Castagliola, Philippe, Pino, Laurent   +2 more
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A Mathematical Model for Geometric Tolerances

Journal of Mechanical Design, 1993
This paper presents a mathematical model for specifying geometric tolerances. This model along with a syntax of tolerance specification will be referred to as the Tolerance Specification Language (TSL). TSL can be used to interpret ANSI Y14.5 geometric tolerancing specifications. The formalization of TSL is based on a set theoretic approach, especially
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Probabilistic Analysis of Geometric Tolerances

1996
This paper describes a procedure for the statistical analysis of geometric tolerances. The proposed procedure assumes that a manufactured surface lies between two ideal offset surfaces positioned at equal distance from the nominal surface. These surfaces do not represent a tolerance zone, but rather the volume which has the highest probability of ...
A. O. Nassef, H. A. ElMaraghy
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Tolerance of geometric distortions in infant's face recognition

Infant Behavior and Development, 2014
The aim of the current study is to reveal the effect of global linear transformations (shearing, horizontal stretching, and vertical stretching) on the recognition of familiar faces (e.g., a mother's face) in 6- to 7-month-old infants. In this experiment, we applied the global linear transformations to both the infants' own mother's face and to a ...
Wakayo, Yamashita, So, Kanazawa, Masami K, Yamaguchi   +2 more
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Geometric Methods of Assigning Tolerances

2005 IEEE Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications, 2005
The geometrical interpretation of assigning tolerances is used. It allows the maximal tolerances are evaluated in normal ones. The volume of tolerance domain is optimized. Accuracy of calculation is increased for normal distribution of parameters.
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Quality Monitoring of Geometric Tolerances: a Comparison Study

2011
While in the previous chapters different approaches for quality monitoring of geometric tolerances were discussed, in the present one a comparison study is provided in which all of these approaches are considered. The aim is to allow practitioners to select a specific method in a given situation.
Colosimo B. M., PACELLA, Massimo
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Geometric Dimensioning and Tolerance Analysis

1991
This chapter is divided into two parts: the first discusses the subject of geometric dimensioning and tolerancing and its relevance in design for manufacturability. The second part deals with the why’s, how’s, and the need for tolerance analysis in taking a product from design to manufacture.
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