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Fast Ignition: Physics Progress in the US Fusion Energy Program and Prospects for Achieving Ignition.

Description: Fast ignition (FI) has significant potential advantages for inertial fusion energy and it is therefore being studied as an exploratory concept in the US fusion energy program. FI is based on short pulse isochoric heating of pre-compressed DT by intense beams of laser accelerated MeV electrons or protons. Recent experimental progress in the study of these two heating processes is discussed. The goal is to benchmark new models in order to predict accurately the requirements for full-scale fast ig… more
Date: October 16, 2002
Creator: Key, M. H.; Andersen, C.; Cowan, T.; Fisch, N.; Freeman, R.; Hatchett, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

STATISTICAL DAMAGE CLASSIFICATION USING SEQUENTIAL PROBABILITY RATIO TESTS.

Description: The primary objective of damage detection is to ascertain with confidence if damage is present or not within a structure of interest. In this study, a damage classification problem is cast in the context of the statistical pattern recognition paradigm. First, a time prediction model, called an autoregressive and autoregressive with exogenous inputs (AR-ARX) model, is fit to a vibration signal measured during a normal operating condition of the structure. When a new time signal is recorded from … more
Date: February 16, 2002
Creator: SOHN, HOON; ALLEN, DAVID W; WORDEN, KEITH & FARRAR, CHARLES R
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Field testing of component-level model-based fault detection methods for mixing boxes and VAV fan systems

Description: An automated fault detection and diagnosis tool for HVAC systems is being developed, based on an integrated, life-cycle, approach to commissioning and performance monitoring. The tool uses component-level HVAC equipment models implemented in the SPARK equation-based simulation environment. The models are configured using design information and component manufacturers' data and then fine-tuned to match the actual performance of the equipment by using data measured during functional tests of the … more
Date: May 16, 2002
Creator: Xu, Peng & Haves, Philip
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Incorporating the Technology Roadmap Uncertainties into the Project Risk Assessment

Description: This paper describes two methods, Technology Roadmapping and Project Risk Assessment, which were used to identify and manage the technical risks relating to the treatment of sodium bearing waste at the Idaho National Engineering and Environmental Laboratory. The waste treatment technology under consideration was Direct Vitrification. The primary objective of the Technology Roadmap is to identify technical data uncertainties for the technologies involved and to prioritize the testing or developm… more
Date: January 16, 2002
Creator: Bonnema, B. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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