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Leaking electricity in domestic appliances

Description: Many types of home electronic equipment draw electric power when switched off or not performing their principal functions. Standby power use (or ''leaking electricity'') for most appliances ranges from 1 - 20 watts. Even though standby use of each device is small, the combined standby power use of all appliances in a home can easily exceed 50 watts. Leaking electricity is already responsible for 5 to 10 percent of residential electricity use in the United States and over 10 percent in Japan. An… more
Date: May 1, 1999
Creator: Meier, Alan & Rosen, Karen
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Selective Oxidation Technology and its Applications Toward Electronic and Optoelectronic Devices

Description: Selective oxidation of AlGaAs compounds has facilitated dramatic improvements in the performance of near IR VCSELS. Under the auspices of this proposal we have: (1) expanded our understanding of both the strengths and the limitations of this technology; (2) explored its applicability to other Al bearing materials; (3) utilized this technology base to demonstrate a variety of new electronic and optoelectronic devices; and (4) established the reliability and manufacturability of oxidized devices … more
Date: July 1, 1999
Creator: Spahn, Olga B.; Allerman, Andrew A.; Choquette, Kent D.; Vawter, Gregory A.; Klem, John F.; Sullivan, Charles T. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Predicting Electronic Failure from Smoke

Description: Smoke can cause electronic equipment to fail through increased leakage currents and shorts. Sandia National Laboratories is studying the increased leakage currents caused by smoke with varying characteristics. The objective is to develop models to predict the failure of electronic equipment exposed to smoke. This requires the collection of data on the conductivity of smoke and knowledge of critical electrical systems that control high-consequence operations. We have found that conductivity is a… more
Date: January 15, 1999
Creator: Tanaka, T. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Modeling and Simulation - The Effects of Grain Coarsening on Local Stresses and Strains in Solder Microstructure

Description: A critical issue in the long-term reliability of solder connections used in electronic packages is the joint failure during thermal cycling. Presently in most finite element analysis to predict the solder joint fatigue failures, solder is assumed as a homogeneous single-phase metal. However in the last decade, several metallurgical studies have shown that solder microstructure may have a role in early solder joint failures (ref 1). Investigators have observed (ref 1) that solder microstructure … more
Date: January 21, 1999
Creator: Chanchani, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Technique for Measuring Hybrid Electronic Component Reliability

Description: Materials compatibility studies of aged, engineered materials and hardware are critical to understanding and predicting component reliability, particularly for systems with extended stockpile life requirements. Nondestructive testing capabilities for component reliability would significantly enhance lifetime predictions. For example, if the detection of crack propagation through a solder joint can be demonstrated, this technique could be used to develop baseline information to statistically det… more
Date: January 1, 1999
Creator: Green, C. C.; Hernandez, C. L.; Hosking, F. M.; Robinson, D.; Rutherford, B. & Uribe, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Long-term operating experience for the ATLAS superconducting resonators

Description: Portions of the ATLAS accelerator have been operating now for over 21 years. The facility has accumulated several million resonator-hours of operation at this point and has demonstrated the long-term reliability of RF superconductivity. The overall operating performance of the ATLAS facility has established a level of beam quality, flexibility, and reliability not previously achieved with heavy-ion accelerator facilities. The actual operating experience and maintenance history of ATLAS are pres… more
Date: December 21, 1999
Creator: Pardo, R. & Zinkann, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Elimination of Heat-Shielding for Geothermal Tools Operating Up To 300 Degress Celsius

Description: This report focuses Sandia National Laboratories' effort to create high-temperature logging tools for geothermal applications not requiring heat-shielding. Tool electronics can operate up to 300 C with a few limiting components operating to 250 C. Second generation electronics are needed to increase measurement accuracy and extend the operating range to 300 and then 350 C are identified. Custom development of high-temperature batteries and assembling techniques are touched on. Outcomes of this … more
Date: October 7, 1999
Creator: HENFLING,JOSEPH A. & NORMANN,RANDY A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Sandia National Laboratories/New Mexico Facilities and Safety Information Document [NOTE: Volume II, Chapters 13 and 14]

Description: The Sandia Pulsed Reactor Facility is a facility for operating SNL's fast-burst reactors, SPR-II and SPR-III. These reactors provide unique near-fission spectrum radiation environments for testing a wide variety of technologies that support both defense and nondefense activities. The primary mission of the facility is to produce high neutron fluence or pulsed high neutron doses for the testing of electronic subsystems and components. Critical experiments may be conducted in the facility to supp… more
Date: August 1, 1999
Creator: March, F.; Guerrero, J. V.; Johns, W. H.; Schetnan, R.; Bayliss, L. S.; Kuzio, K. A. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of highly magnetostrictive composites for applications in magnetomechanical torque sensors

Description: The objective of this work was to investigate and develop a magnetomechanical material with high magnetomechanical response and low hysteresis. This material will be used in electronic torque sensors for advanced steering systems in automobiles which will replace the costly and fuel inefficient hydraulic steering systems currently in use. Magnetostruction and the magnetomechanical effect under torsional stress of magnetostrictive composites have been investigated in the present study.
Date: December 1, 1999
Creator: Chen, Yonghua
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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