U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Robert R. Lipman (Assoc)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 26 - 50 of 98

STEP File Analyzer User's Guide (Version 3)

April 27, 2016
Author(s)
Robert R. Lipman
This guide describes how to use the STEP File Analyzer, a software tool that analyzes and generates a spreadsheet from a STEP (STandard for the Exchange of Product model data) file. The spreadsheets simplify inspecting information in the STEP file at an

Exploring Model-Based Engineering Concepts for Additive Manufacturing

September 15, 2015
Author(s)
Robert R. Lipman, Jeremy S. McFarlane
Robust geometry and tolerance representations are needed in additive manufacturing for precise part specification and interoperability with downstream activities such as manufacturing, inspection, and long-term archiving. A disconnection exists between

Tolerance Specification and Related Issues for Additively Manufactured Products

August 12, 2015
Author(s)
Gaurav Ameta, Robert R. Lipman, Paul W. Witherell, Shawn P. Moylan
Additive manufacturing (AM) has gained increased attention in the last decade as a versatile manufacturing process for customized products. AM process can create complex free-form shapes, internal cavities and lattices, which are either not feasible or

Streamlining the Additive Manufacturing Digital Spectrum: A Systems Approach

October 18, 2014
Author(s)
Duck B. Kim, Paul Witherell, Robert R. Lipman, Shaw C. Feng
Additive Manufacturing (AM) provides great potential for industrial manufacturers who require low volume and functional, highly complex end use products. Given AM's potential, numerous research efforts are underway to reduce the time and improve the

STEP File Analyzer User's Guide (Version 2)

April 25, 2014
Author(s)
Robert R. Lipman
This guide describes how to use the STEP File Analyzer, a software tool that generates a spreadsheet from a STEP (STandard for the Exchange of Product model data) file. The spreadsheets simplify inspecting information in the STEP file at an entity and

Additive Manufacturing Technical Workshop Summary Report

December 4, 2013
Author(s)
Christopher U. Brown, Joshua Lubell, Robert R. Lipman
This report summarizes the presentations, discussions, and recommendations from the Additive Manufacturing Technical Workshop held during the PDES, Inc. offsite meeting in Gaithersburg, Maryland in March of 2013. The purpose of the workshop was to identify

Model Based Enterprise Summit Report

November 4, 2013
Author(s)
Joshua Lubell, Simon P. Frechette, Robert R. Lipman, Frederick M. Proctor, John A. Horst, Mark G. Carlisle, Paul J. Huang
This report summarizes the presentations, discussions, and recommendations from the Model-Based Enterprise Summit held at the National Institute of Standards and Technology in December of 2012. The purpose of the Summit was to identify challenges, research

Real-Time Monitoring: Augmenting Building Information Modeling with 3D Imaging Data to Control Drilling for Embeds into Reinforced Concrete Bridge Decks

September 16, 2013
Author(s)
Manu Akula, Robert R. Lipman, Marek Franaszek, Geraldine Cheok, Kamel Saidi, Vineet Kamat
A major contributing factor attributed to accidents in construction is the lack of hazard recognition due to limited visibility that characterizes construction projects. Real-time monitoring systems that utilize context aware computing techniques

A Survey of Standards for Product Lifecycle Management of Structural Composites

August 7, 2013
Author(s)
Christopher U. Brown, Joshua Lubell, Robert R. Lipman, Gaurav Ameta
Composites are needed when designing components with a high strength (along a particular direction) to weight ratio. Composites are widely used in the automotive, sports and aerospace industries. Designing a composite component requires highly concurrent

STEP File Analyzer User's Guide

December 13, 2012
Author(s)
Robert R. Lipman
This guide describes how to use the STEP File Analyzer that generates a spreadsheet from a STEP file. The spreadsheet simplifies inspecting information in the STEP file at an entity and attributes level. Geometric, PMI, assembly, annotation, attribute, and

Image-based 3D Mapping of Rebar Location for Automated Assessment of Safe Drilling Areas Prior to Placing Embedments in Concrete Bridge Decks

May 23, 2012
Author(s)
Mani Golparvar-Fard, Behshad Ghadimi, Kamel Saidi, Geraldine Cheok, Marek Franaszek, Robert R. Lipman
This paper presents a new image-based approach for 3D mapping the locations of the rebar and embedded components in a railway bridge deck prior to placement of concrete. Our approach enables practitioners to quickly and automatically identify where the