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Search Publications

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Displaying 901 - 925 of 2168

Determining Mechanical Reliability of Brittle Materials

April 18, 2013
Author(s)
Stephen W. Freiman, Jeffrey Fong
The widespread existence of slow crack growth in most glasses and ceramics due to a stress-enhanced reaction between an external environment and strained bonds at a crack tip greatly complicates the challenge of assuring the reliability of components which

Modeling and Simulation for Improving Ambulance Patient Compartment Design Standards

April 12, 2013
Author(s)
Deogratias Kibira, Yung-Tsun T. Lee, Allison Barnard Feeney, Jennifer L. Marshall, Larry Avery, Jennifer Moore, Carlotta Boone
Emergency medical service providers riding in ambulance patient compartments, while caring for patients, are at high risk of suffering injuries in case of a crash or sudden maneuver. Seat belts are one way to reduce the occurrence and severity of injuries

Block-copolymer healing of simple defects in a chemoepitaxial template

April 11, 2013
Author(s)
Paul N. Patrone, Gregg M. Gallatin
Using a phase-field model of block copolymers (BCPs), we characterize how a chemoepitaxial template with parallel lines of arbitrary width affects the BCP microdomain shape. The model, which is an extension of the Leibler-Ohta-Kawasaki theory, accounts for

Performance Metrics of Speed and Separation Monitoring in Shared Workspaces

April 1, 2013
Author(s)
Jeremy A. Marvel
A metric is proposed that evaluates speed and separation monitoring efficacy in industrial robot environments in terms of the quantification of safety and the effects on productivity. The collision potential is rep-resented by separation metrics and sensor

Coordinate Metrology and the Proposed E57.02 Static Pose Determination Standard

March 29, 2013
Author(s)
David MacKinnon, J.-Angelo Beraldin, Tsai H. Hong, Jeremy Marvel
We present the Proposed Standard ASTM E57.02 "Standard Test Method for Evaluating Static Pose Measurement Systems" (Work Item ASTM WK31638) and explain why it should be considered important by coordinate metrologists. The stated purpose of the standard is

Ground Truth Systems for Object Recognition and Tracking

March 29, 2013
Author(s)
Afzal A. Godil, Roger D. Eastman, Tsai H. Hong
In this report we discuss different types of ground-truth systems used for evaluation of object recognition and tracking systems in industrial manufacturing environments. We discuss three main ways for acquiring ground truth for object recognition and

Concept Analysis to Enrich Manufacturing Service Capability Models

March 22, 2013
Author(s)
Jun H. Shin, Boonserm Kulvatunyou, Yunsu Lee, Nenad Ivezic
When an Original Equipment Manufacturer (OEM), which makes a final product for the consumer marketplace by purchasing components from its suppliers, faces unexpected supply network failures and market events, models of suppliers’ manufacturing service

Review on Sustainability Characterization for Manufacturing Processes

February 15, 2013
Author(s)
Mahesh Mani, Jatinder Madan, Jae H. Lee, Kevin W. Lyons, Satyandra K. Gupta
Manufacturing industries lack the measurement science and the needed information base to measure and effectively compare environmental performances of manufacturing processes, resources and associated services with respect to sustainability. The current

ITRS Chapter: MEMS

January 30, 2013
Author(s)
Michael Gaitan
The ITRS has organized a MEMS Technology Working Group (TWG), which has developed a new chapter on MEMS for its 2011 report. The report focuses on MEMS technologies associated with mobile Internet devices, such as smartphones and tablet computers. These

Quantum Dot Fluorescence Lifetime Engineering with DNA Origami Constructs

January 21, 2013
Author(s)
James A. Liddle, Seung-Hyeon Ko, Kan Du
The ability to organize nanostructures of disparate types and materials – such as metal nanoparticles and semiconductor quantum dots – is challenging but essential for the creation of novel materials and devices. Metal nanoparticles (NPs) have interesting

AGVs and Forklifts Gaining Sight for Safety

January 10, 2013
Author(s)
Roger V. Bostelman
Forklifts and automated guided vehicles are useful tools for the manufacturing industry. With regard to safety of workers (and equipment) near industrial vehicles, there are issues when using either manned or automated powered industrial vehicles in

Simulation and Analysis for Sustainable Product Development

January 9, 2013
Author(s)
Mahesh Mani
Purpose: Simulation plays a critical role in the design of products, materials and manufacturing processes. However, there are gaps in the simulation tools used by industry to provide reliable results from which effective decisions can be made about

The Current State and Recent Trends of the U.S. Manufacturing Industry

December 20, 2012
Author(s)
Douglas Thomas
This report brings together multiple sources of aggregate manufacturing industry data and industry subsector data to develop a quantitative depiction of the U.S. manufacturing industry. It compares the U.S. manufacturing industry to its international

Microelectromechanical systems based Stewart platform with sub-nano resolution

December 3, 2012
Author(s)
Seung Ho Yang, Yong Sik Kim, Jae M. Yoo, Nicholas G. Dagalakis
Currently difficulties exist in the fabrication of microelectromechanical systems (MEMS) in the form of Stewart platforms. The macroscale positioning technology, such as universal joints, ball and roller bearings and commercial actuators, used for building

DNA Evolves

December 1, 2012
Author(s)
James A. Liddle, Seung-Hyeon Ko
None

A Humidity Generator for Temperatures to 200 degC and Pressures to 1.6 MPa

November 30, 2012
Author(s)
D Vega-Maza, W. Wyatt Miller, Dean C. Ripple, Gregory E. Scace
We have constructed a new humidity generator that produces gas streams of known moisture content at temperatures from 85 °C to 200 °C, absolute pressures from 0.2 MPa to 1.6 MPa, and relative humidities from 10 % to 90 %. The generator produces a moist gas

Formation of Extended Ionomeric Network by Bulk Polymerization of L,D-lactide with Layered Double Hydroxide

November 22, 2012
Author(s)
Edward D. McCarthy, Mauro Zammarano, Douglas M. Fox, Ryan Nieuwendaal, Yeon S. Kim, P H. Maupin, Paul C. Trulove, Jeffrey W. Gilman
We report the formation of an ionomeric network in a poly(L,D-lactide) hybrid nanocomposite, (PLDLA-HYB) during in-situ melt polymerization of L,D lactide in the presence of magnesium/aluminium layered-double-hydroxide (LDH) without added catalyst. The
Displaying 901 - 925 of 2168
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