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RISSpecial Issue: Geometric Tolerancing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In 1989 a small group of researchers gathered at Jerusalem, Israel under the sponsorship of CIRP (International Academy for Production Engineering) to address the emerging problem of computeraided tolerancing (CAT), which ...
Smart Vaccine Manufacturing Using Novel Biotechnology Platforms: A Study During COVID-19
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Healthcare experts have come to a consensus that effective and safe vaccines are necessary to control the rapid spread of the ongoing COVID-19 pandemic across the globe. Since the traditional vaccine development and ...
Datum Planes Based on a Constrained L1 Norm
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper has two major goals. First, we present an algorithm for establishing planar datums suitable for a default in tolerancing standards. The algorithm is based on a constrained minimization search based on the L1 ...
Theory and Algorithms for Weighted Total Least Squares Fitting of Lines, Planes, and Parallel Planes to Support Tolerancing Standards
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We present the theory and algorithms for fitting a line, a plane, two parallel planes (corresponding to a slot or a slab), or many parallel planes in a total (orthogonal) leastsquares sense to coordinate data that is ...
Optimality Conditions for Constrained Least-Squares Fitting of Circles, Cylinders, and Spheres to Establish Datums
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper addresses the combinatorial characterizations of the optimality conditions for constrained least-squares fitting of circles, cylinders, and spheres to a set of input points. It is shown that the necessary condition ...
Convexity and Optimality Conditions for Constrained Least-Squares Fitting of Planes and Parallel Planes to Establish Datums
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper addresses some important theoretical issues for constrained least-squares fitting of planes and parallel planes to a set of points. In particular, it addresses the convexity of the objective function and the ...
Toward a New Mathematical Definition of Datums in Standards to Support Advanced Manufacturing
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Recent advances in the digitization of manufacturing have prompted ASME and International Organization for Standardization (ISO) standards committees to reexamine the definition of datums. Any new definition of datums ...
On Algorithms and Heuristics for Constrained Least-Squares Fitting of Circles and Spheres to Support Standards
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: Constrained least-squares fitting has gained considerable popularity among national and international standards committees as the default method for establishing datums on manufactured parts. This has resulted in the ...
A Portrait of an ISO STEP Tolerancing Standard as an Enabler of Smart Manufacturing Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The International Organization for Standardization (ISO) has just completed a major effort on a new standard ISO 10303242 titled “Managed Model Based 3D Engineering.†It belongs to a family of standards called STEP ...