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Search Publications by: Vijay Srinivasan (Fed)

Displaying 51 - 75 of 99

Theory and algorithm for planar datum establishment using constrained total least-squares

May 19, 2016

Author(s)

Craig M. Shakarji, Vijay Srinivasan

First, we present an efficient algorithm for establishing planar datums that is based on a constrained minimization search based on the L2 norm after forming a convex surface from sampled points. Visualized by Gauss maps, we prove that the problem reduces

The New Frontiers in Computational Modeling of Material Structures

February 23, 2016

Author(s)

Vijay Srinivasan, Jarek Rossignac, Vadim Shapiro, William Regli

We are witnessing the emergence of a new paradigm in the modeling of material structures. It stems from the digitization of manufacturing and is fueled by advances in additive manufacturing and material science. This paper strives to provide a critical

Datum Planes Based on a Constrained L1 Norm

December 1, 2015

Author(s)

Craig M. Shakarji, Vijay Srinivasan

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 L_1 (L1) norm after forming a convex

A Constrained L2 Based Algorithm for Standardized Planar Datum Establishment

November 18, 2015

Author(s)

Craig M. Shakarji, Vijay Srinivasan

For years (decades, in fact) a definition for datum planes has been sought by ASME and ISO standards writers that combines the contacting nature of traditional surface plate mating with a means of balancing rocking conditions when there is a centrally

An improved L1 based algorithm for standardized planar datum establishment

October 1, 2014

Author(s)

Craig M. Shakarji, Vijay Srinivasan

On architecting and composing through-life engineering information services to enable smart manufacturing

June 24, 2014

Author(s)

Vijay Srinivasan, Nenad Ivezic, Boonserm Kulvatunyou

Engineering information systems play an important role in the current era of digitization of manufacturing, which is also known as smart manufacturing. Traditionally, these engineering information systems spanned the lifecycle of a product by providing

A portrait of an ISO STEP tolerancing standard as an enabler of smart manufacturing systems

May 21, 2014

Author(s)

Allison Barnard Feeney, Simon P. Frechette, Vijay Srinivasan

The International Organization for Standardization (ISO) has just completed a major effort on a new standard ISO 10303-242 titled Managed Model Based 3D Engineering. It belongs to a family of standards called STEP (STandard for the Exchange of Product

Geometric Interoperability via Queries

May 19, 2014

Author(s)

Vijay Srinivasan

The problem of geometric (model and system) interoperability is a non-trivial generalization of the classical problem of part interchangeability in mechanical assemblies. Interoperability subsumes the challenging problems of geometric model quality

Report from a 2013 ASME Panel on Geometric Interoperability for Advanced Manufacturing

May 19, 2014

Author(s)

Vijay Srinivasan, Vadim Shapiro

During the Summer of 2013 in a conference organized by the American Society of Mechanical Engineers (ASME) at Madison, Wisconsin, a panel of academic, industrial, and government researchers engaged in a spirited discussion on the issue of geometric

A Call for Artificial Intelligence Tools to Support Manufacturing Innovation

March 14, 2014

Author(s)

Vijay Srinivasan

We are in the midst of a renewed interest in manufacturing. Developed economies in the West are increasingly concerned about the decline in manufacturing in their countries, and have linked that decline to high unemployment and low economic growth. In

Metrological challenges introduced by new tolerancing standards

February 13, 2014

Author(s)

Ed Morse, Yue Peng, Vijay Srinivasan, Craig M. Shakarji

The recent release of ISO has provided designers with a richer set of specification tools for the size of part features, so that various functional requirements can be captured with greater fidelity [2]. However, these tools also bring new challenges and

Theory and Algorithms for L1 Fitting Used for Planar Datum Establishment in Support of Tolerancing Standards

October 15, 2013

Author(s)

Craig M. Shakarji, Vijay Srinivasan

We present the theory and algorithms for establishing a datum plane consistent with ASME Y14.5 standard definitions corresponding to a planar datum feature sampled with coordinate data that is weighted,. The method uses a one-sided minimization search

On the Enduring Appeal of Least-squares Fitting in Computational Coordinate Metrology

September 6, 2013

Author(s)

Vijay Srinivasan, Craig M. Shakarji, Ed Morse

The vast majority of points collected with coordinate measuring machines are not used in isolation; rather, collections of these points are associated with geometric features through fitting routines. In manufacturing applications, there are two