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Advanced mirror shapes for mode enhancement in plano-concave cavities. [PDF]

Sci Rep
Hughes WJ, Horak P.
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Geometric computation and optimization on tolerance dimensioning

CAD Computer Aided Design, 2014
This paper presents an efficient geometric method of tolerance analysis for optimizing dimensioning and providing an optimal processing plan for a discrete part. Geometric primitives are used to represent part features, and dependencies in the dimensions between parts are represented by a topological graph. The ordering of these dependencies can have a
John Keyser
exaly   +2 more sources

Geometric formulation of orientation tolerances

Proceedings. 1998 IEEE International Conference on Robotics and Automation (Cat. No.98CH36146), 2002
The rapid proliferation of coordinate measuring machines (CMM) triggered the need for precise and rigorous formulations of each tolerance concept. In this paper, we employ the concept of configuration space of symmetric features to define each type of datum features and orientation tolerances.
Jianbo Gou, Yunxian Chu, H. Wu, Zexiang Li 0001   +3 more
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Geometric tolerancing: II. Conditional tolerances

IBM Journal of Research and Development, 1989
Summary: We examined the representation of geometric tolerances in solid models from the perspective of certain functional requirements. We showed that assembly and material bulk requirements can be specified as virtual boundary requirements (VBRs). Here, we study the related issue of deriving equivalent alternative specifications.
Vijay Srinivasan, Rangarajan Jayaraman
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Statistical verification of conformance to geometric tolerance

Computer-Aided Design, 1994
Abstract Modern coordinate measurement machines have provided industry with new tools for inspecting complex parts. This paper develops statistical procedures that complement these inspection methods, and it ties the conformance problem into the hypothesis testing formalism of conventional statistics.
Thomas R. Kurfess, David L. Banks
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Geometric Tolerance Specification

2011
In conventional tolerancing, the efforts of designers are mainly directed at selecting suitable values for linear tolerances on part dimensions. These are either determined by trial and error through analysis calculations or optimized according to cost functions.
ARMILLOTTA, ANTONIO, SEMERARO, QUIRICO
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Statistical geometric computation on tolerances for dimensioning

Computer-Aided Design, 2016
Dimensions are used to specify the distances between different features in geometric models. These dimensions will often be expressed as a range of allowable dimensions. When considering a group of toleranced dimensions, these ranges can be analyzed as either a worst-case bound on allowable ranges, or as a statistical measure of expected distribution ...
Songgang Xu, John Keyser
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Tolerances in computer-aided geometric design

The Visual Computer, 1987
In the design of discrete part shapes, the specification of tolerance constraints can have major consequences for product quality and cost. Traditional methods for tolerance analysis and synthesis are time-consuming and have limited applicability. The thesis of this work is that geometric design systems based on solid modeling technology can be used to
Joshua U. Turner, Michael J. Wozny
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Representation and reasoning of geometric tolerances in design

Artificial Intelligence for Engineering Design, Analysis and Manufacturing, 1997
AbstractThe geometric dimensioning and tolerancing (GD&T) specifications of a design are directly associated with its performance and functional requirements. They also govern the manufacturing and quality control processes needed to achieve those requirements.
Jhy-Cherng Tsai, Mark R. Cutkosky
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