| Rotor Smoothing and Vibration Monitoring Results for the US Army VMEP |
Jun-2009 |
19 pages |
| Authors:
Paul Grabill; Tom Brotherton; Bob Branhof; John Berry; Lern Grant; INTELLIGENT AUTOMATION CORP POWAY CA
|
 | Automated systems to perform aircraft diagnostics and prognostics are of current interest. Development of those systems requires large amounts of data (collection, monitoring, manipulation) to capture and characterize fault events, and to ensure data is captured early-on in a fault progression to support prognostic system development. Continuous data collection is also required to capture relatively rare, potentially catastrophic events. Data collected can then be analyzed to assist in the development ... |
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| Portable Ultrasound Imaging of the Brain for Use in Forward Battlefield Areas |
Mar-2009 |
21 pages |
| Authors:
Gregory T Clement; ULTRADIAGNOSTICS INC ATTLEBORO FALLS MA
|
| Using ultrasound as a detection device in the body, including the brain, has been extensively investigated. Unfortunately, previous ultrasound-based methods on the brain have suffered from the severe distortion caused by the skull bone. The authors have recently developed a technique that allows ultrasound to propagate through the skull with significantly reduced distortion using a shear mode technique. The current project will develop a device for noninvasive identification of the ... |
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| Identification of Biomarkers Associated with the Healing of Chronic Wounds |
JUL 2006 |
24 pages |
| Authors:
Laura E. Edsberg; DAEMEN COLL AMHERST NY
|
| It is the objective of this study to identify the biomarkers associated with the earliest stages of healing in chronic wounds. The findings of this study are intended to facilitate the development a diagnostic tool which would evaluate the healing process. Samples have been collected from interior and peripheral wound sites over 6 weeks from 17 subjects thus far and analyzed using 2-D page. 161 spots/proteins have been identified that ... |
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| Fusing Competing Prediction Algorithms for Prognostics (Preprint) |
MAR 2006 |
12 pages |
| Authors:
Kai Goebel; Neil Eklund; Pierino Bonanni; GE GLOBAL RESEARCH CENTER NISKAYUNA NY
|
| Two fundamentally different approaches can be employed to estimate remaining life in faulted components. One is to model from first principles the physics of fault initiation and propagation. Such a model must include detailed knowledge of material properties, thermodynamic and mechanical response to loading, and the mechanisms for damage creation and growth. Alternatively, an empirical model of condition-based fault propagation rate can be developed using data from experiments in which ... |
|
| Scalable Quantum Processor Technology Based on Laser Trapped Neutral Atoms |
07 SEP 2005 |
14 pages |
| Authors:
Poul S. Jessen; ARIZONA UNIV TUCSON OPTICAL SCIENCES CENTER
|
| This grant has supported an extensive effort aimed at using laser cooled Cs atoms trapped in optical lattices as qubits, and to demonstrate basic single- and two-qubit quantum gates. During the grant period we have made significant progress towards these goals. We have: (i) Refined or developed new essential diagnostic tools for atomic qubits, including Stern-Gerlach analysis and real-time QND measurements. (ii) Developed techniques to trap atomic qubits in 3D ... |
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| Investigation of Transient Forces Produced by Gases Expelled from Rapidly Heated Surfaces |
13 JUL 2005 |
7 pages |
| Authors:
B. C. Souza; A. D. Ketsdever; E. P. Muntz; UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT OF AEROSPACE AND MECHANICAL ENGINEERING
|
| A torsional impulse balance has been developed as a new diagnostic tool to study fundamental processes in laser-surface interactions. The impulse balance has been designed and tested with a robust calibration system to measure impulsive forces with resolution as low as 1 nano-Newton-second. A simple technique has been developed to accurately determine the force as a function of time from the motion of the nano-impulse balance system (NIBS). This technique ... |
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| Adapting Conductance Technology for Military Application |
20 JUN 2005 |
24 pages |
| Authors:
Randy R. Swanson; MIDTRONICS INC WILLOWBROOK IL
|
| In military vehicles, many mission-critical systems rely heavily on battery power for operation. Should the batteries fail or become deeply discharged, the mission-critical systems will fail, and the batteries will not be able to start the vehicle engine, leaving the vehicle and its occupants stranded and vulnerable. Without knowing the status of the batteries, the commander is limited in his ability to keep soldiers and equipment out of harm's way. ... |
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| Bio-Inspired Concepts: Studies of Biological Response to External Electric Fields for Cellular Manipulation and Diagnostics - Modeling and Experimentation |
03 MAY 2005 |
34 pages |
| Authors:
Ravindra Joshi; OLD DOMINION UNIV RESEARCH FOUNDATION NORFOLK VA
|
| A comprehensive modeling and experimental effort was carried out to develop an understanding of cellular bio-response to short duration, high- intensity electric fields. Macroscopic models for determining the time-dependent spatially-variable electric potential and current flows at single cells were developed. This provides predictions of both transmembrane voltages and temperature changes. The macroscopic model was coupled to a nano-simulator to probe the sub-cellular response at the molecular level. Many of the ... |
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| Accelerated Capabilities Initiative Condition-Based Maintenance: Machinery Diagnostics/Prognostics II |
21 FEB 2005 |
263 pages |
| Authors:
Leslie D. Johnson; Terri A. Merdes; PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB
|
| Machinery diagnostics and prognostics is an enabling technology for preventing equipment operational failures, reducing maintenance costs and improving system design. The Navy is currently investigating the impact of this technology for shipboard applications. A research team is currently participating in a shipboard demonstration of machinery monitoring system for a ships service gas turbine generator (SSGTG) set. The monitoring equipment was developed using modified commercial-off-the-shelf (COTS) technology to enable rapid revisions ... |
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| Development of a Novel Internal Positive Control for Taqman Based Assays |
01 FEB 2005 |
10 pages |
| Authors:
Laurie J. Hartman; Susan R. Coyne; David A. Norwood; ARMY MEDICAL RESEARCH INST OF INFECTIOUS DISEASES FORT DETRICK MD
|
| Development of rapid amplification assays for the detection and identification of biological threat agents has become a focus of diagnostic efforts in recent years. The use of real-time PCR assays as diagnostic tools depends upon two critical processes. First, nucleic acid purification must provide template that is both amplifiable and free of PCR inhibitors. Second, the assays themselves must be sensitive and specific for their nucleic acid targets. A differentiation ... |
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| Monitoring the Integrity of filament Wound Structures Using Built-In Sensor Networks |
2005 |
9 pages |
| Authors:
Mark Lin; Amrita Kumar; Xinlin Qing; Shawn J. Beard; Samuel S. Russell; James L. Walker; Thomas K. Delay; ACELLENT TECHNOLOGIES INC SUNNYVALE CA
|
| Monitoring the integrity of filament wound composite structures such as solid rocket motors and liquid fuel bottles is important in order to prevent catastrophic failures and to prolong the service life of these structures. To ensure the safety and reliability of rocket components, they require frequent inspection for structural damages that might have occurred during manufacturing, transportation, and storage. The timely and accurate detection, characterization and monitoring of structural cracking, ... |
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| Pilot Dependence on Imperfect Diagnostic Automation in Simulated UAV Flights: An Attentional Visual Scanning Analysis |
2005 |
7 pages |
| Authors:
Christopher Wickens; Stephen Dixon; Juliana Goh; Ben Hammer; ILLINOIS UNIV AT URBANA SAVOY
|
| An unmanned air vehicle (UAV) simulation was designed to reveal the effects of imperfectly reliable diagnostic automation a monitor of system health parameters on pilot attention, as the latter was assessed via visual scanning. Four groups of participants flew a series of legs under different automation conditions: a baseline (no automation) control, and automation which was either 100% reliable, 60% reliable with a low-threshold bias to produce false alerts, and ... |
|
| Completion of a High-Tc Hand-held SQUID System and Development of Small High-Fill-Factor Coils for Application to Non-Destructive Evaluation |
14 JUL 2004 |
43 pages |
| Authors:
Frederick C. Wellstood; MARYLAND UNIV COLLEGE PARK DEPT OF PHYSICS
|
| This project had two main objectives. The first objective was to complete the construction and testing of a high-fill factor, small-coil Superconducting Quantum Interference Device (SQUID) system that will allow one to feed a straight wire or flowing medium through a small coil that is tightly coupled to a SQUID. A prototype high-Tc SQUID-based, cryo-cooled system was designed, built, and operated. The goal for this "flow-through" system was to determine ... |
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| Embedded Diagnostics & Prognostics Wireless Sensing Platforms |
01 JUN 2004 |
10 pages |
| Authors:
Mark Ousachi; Andrew Scott; David Yee; Thomas Hosmer; Dave Daniszewski; AMERICAN SYSTEMS TECHNOLOGY INC TROY MI
|
| An embedded diagnostics and prognostics architecture affects several aspects associated with military ground vehicles such as improved safety, reduction in maintenance times, weapon system readiness, and awareness of mission capabilities. These capabilities can be enhanced further by implementing wireless technologies on vehicles and utilizing wireless communication in the theater of operations. A wireless architecture on the vehicle provides the foundation for additional significant attributes such as improved theater awareness and ... |
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| Diagnostic Biodosimetry Response for Radiation Disasters: Current Research and Service Activities at AFRRI |
JUN 2004 |
17 pages |
| Authors:
P. G. Prasanna; J. M. Muderhwa; A. C. Miller; M. B. Grace; C. A. Salter; W. F. Blakely; ARMED FORCES RADIOBIOLOGY RESEARCH INSTBETHESDA MD
|
| This paper addresses the importance of diagnostic radiation dose assessment to help develop a treatment strategy within days of a catastrophe. The long-range goals of the Armed Forces Radiobiology Research Institute (AFRRI) Biological Dosimetry Team are to develop validated radiation biodosimeters and to equip medical personnel with diagnostic information (clinical signs and symptoms, physical dosimetry, etc.) germane to the medical management of human radiation casualties. Our specific objectives are (a) ... |
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| Optical Coherence Tomographic Imaging and Delivery for Surgical Guidance |
31 MAY 2004 |
58 pages |
| Authors:
James G. Fujimoto; MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE
|
| OCT is an emerging diagnostic imaging technology which was developed by our research group in part under this program. OCT generates cross-sectional images of tissue microstructure with micron scale (1-15 micrometers) resolution by measuring the echo time delay and magnitude of backscattered light. OCT can thus function as a type of "optical biopsy," enabling imaging of tissue with resolution approaching conventional biopsy and histopathology, but without the need to remove ... |
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| Continuous and Discrete Inverse Conductivity Problems |
FEB 2004 |
27 pages |
| Authors:
Franklin Gavilanez; John Baras; Carlos Berenstein; MARYLAND UNIV COLLEGE PARK INST FOR SYSTEMS RESEARCH
|
| Tomography using CT scans and MRI scans is now well-known as a medical diagnostic tool which allows for detection of tumors and other abnormalities in a noninvasive way, providing very detailed images of the inside of the body using low dosage X-rays and magnetic fields. They have both also been used for determination of material defects in moderate size objects. In medical and other applications they complement conventional tomography. There ... |
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| Non-Destructive Evaluation of Defects in Wires and Other Samples Using an 8-Channel High-Tc Scanning SQUID Microscope |
26 AUG 2003 |
11 pages |
| Authors:
Fred Wellstood; Su-Young Lee; Anders Gilbertson; John Matthews; Greg Moore; MARYLAND UNIV COLLEGE PARK DEPT OF PHYSICS
|
| This project involves the development, construction, and operation of a sensitive magnetic microscope that is based on the dc Superconducting QUantum Interference Device (SQUID). During this project the authors constructed a system by modifying one of an existing 1-channel liquid-nitrogen cooled SQUID microscope to hold an array of 8 high-Tc YBCO SQUIDs. The SQUID chip was mounted on the end of a 77 K cold finger in the vacuum space ... |
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| Effects on Diagnostic Parameters After Removing Additional Synchronous Gear Meshes |
APR 2003 |
14 pages |
| Authors:
Harry J. Decker; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH GLENN RESEARCH CENTER
|
| Gear cracks are typically difficult to diagnose with sufficient time before catastrophic damage occurs. Significant damage must be present before algorithms appear to be able to detect the damage. Frequently there are multiple gear meshes on a single shaft. Since they are all synchronous with the shaft frequency, the commonly used synchronous averaging technique is ineffective in removing other gear mesh effects. Carefully applying a filter to these extraneous gear ... |
|
| A Framework for Prognostics Reasoning |
DEC 2002 |
287 pages |
| Authors:
Thomas C. Clutz; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The use of system data to make predictions about the future system state commonly known as prognostics is a rapidly developing field. Prognostics seeks to build on current diagnostic equipment capabilities for its predictive capability. Many military systems including the Joint Strike Fighter (JSF) are planning to include on-board prognostics systems to enhance system supportability and affordability. Current research efforts supporting these developments tend to focus on developing a prognostic ... |
|
| HAARP Diagnostic Instruments; High Frequency Active Auroral Research Program |
DEC 2002 |
71 pages |
| Authors:
Paul A. Kossey; James C. Battis; AIR FORCE RESEARCH LAB HANSCOM AFB MA SPACE VEHICLES DIRECTORATE
|
| This report describes the suite of diagnostic instruments at a major facility for experimental radio science research, under development in Gakona, Alaska. This site is being developed as part of the High Frequency Active Auroral Research Program (HAARP). A key objective of the program is the identification and characterization of the physical processes initiated in the ionosphere and space via interactions with high power radio waves. Among these phenomena are: ... |
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| Diagnostic Instrumentation |
31 MAR 2002 |
5 pages |
| Authors:
Bruce L. Freeman; TEXAS A AND M UNIV COLLEGE STATION TX DEPT OF NUCLEAR ENGINEERING
|
| The requested image converter camera is a state-of-the-art camera that is able to capture frames as short as 5-to-10 nanoseconds with a resolution of 1,024 x 1,024 pixels. It will be primarily used on an AFOSR-supported research program on explosive driven power generation. It also may be used to enhance research on the SpearTIP program, the ATLAS switch development project, and plasma focus studies. A critical aspect of the author's ... |
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| Supporting Battlefield Situation Assessment Through Attention Guidance and Diagnostic Aiding: A Cost-Benefit and Depth of Processing Analysis |
DEC 2001 |
69 pages |
| Authors:
William J. Horrey; Christopher D. Wickens; ILLINOIS UNIV AT URBANA-CHAMPAIGN SAVOYAVIATION RESEARCH LAB
|
| Automated support systems may be useful tools for aiding situation assessment in complex environments such as the military battlefield, medical diagnosis, and crisis management. These environments are marked by large amounts of information which often must be weighted and integrated into a meaningful judgment or assessment. Two experiments examined the effects of attention cueing and decision aiding on information integration tasks in static battlefield situations. In the first experiment, sixteen ... |
|
| Identification of Vascular Parameters Based on the Same Pressure Pulses Waves Used to Measure Pulse Wave Velocity |
25 OCT 2001 |
|
| Authors:
A. S. Ferreira; J. B. Filho; M. N. Souza; UNIVERSIDADE FEDERAL DO RIO DE JANIERO (BRAZIL) BIOMEDICAL ENGINEERING PROGRAM
|
 | Pulse Wave Velocity (PWV) is a diagnosis method to evaluate the global behavior of arterial parameters and has being used as an indicator of arterial stiffness, It is a non-invasive method based on the acquisition of pressure pulses waveforms on two sites of an arterial segment In this paper it will be shown that based on a three-element Windkessel model and the same pressure pulse waves acquired to calculate PWV, ... |
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| Wrist Sensor for Warfighter Status Monitor Clinical and Field Testing Phase |
JUL 2001 |
33 pages |
| Authors:
David W. Gerdt; Martin C. Baruch; EMPIRICAL TECHNOLOGIES CORP CHARLOTTESVILLE VA
|
| Twelve, versatile wrist worn pulse monitors were developed and delivered. A light, non-constricting band worn around the wrist is pneumatically coupled to a small electro-optical unit worn on the forearm. The forearm unit contains a fiber optic sensor, pulsed laser, photodiode, PIC processor, DSP, transceiver, antenna, memory, battery, and other parts. Physiological data is radioed to an RS-232 port on a standard IBM compatible computer. The computer switches the unit ... |
|
| A Novel Diagnostic and Therapeutic Marker for Prostate Cancer |
FEB 2001 |
44 pages |
| Authors:
Irwin Gelman; MOUNT SINAI SCHOOL OF MEDICINE NEW YORK
|
| This is a final report correlating loss of SSeCKS (Src Suppressed C Kinase Substrate; pronounced essex) expression with increased metastatic potential in prostate cancer. The expression of SSeCKS, and its human orthologue, Gravin, is severely downregulated in human and rat prostate cancer cell lines compared to immortalized, untransformed prostate epithelial cell lines or prostate tissue sections from normal patients or patients with benign prostatic hypertrophy or low-grade prostate cancers (Gleason ... |
|
| Development of an All Electronic, Behind the Armor Debris Witness Panel |
17 JAN 2001 |
36 pages |
| Authors:
Chris Anderson; FLORIDA UNIV SHALIMAR GRADUATE ENGINEERING AND RESEARCH CENTER
|
| This report documents an AFOSR study performed by the UF GERC for a high speed diagnostic tool for characterizing the behind-armor effects of various armor defeating munitions. Regions behind the armor are continuously monitored with laser beams and photo-detectors so that passing fragments are detected when they temporarily shadow the detector outputs. During an event, all information is stored on a high speed, CCD detector based camera that is produced ... |
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| Naval Aviation Aging Wiring: Prognostic and Diagnostic Solutions |
DEC 2000 |
81 pages |
| Authors:
Mark E. Nieto; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The Navy and Marine Corps provide key forward-presence, crisis response and war-fighting capabilities to our nation's leaders and joint commanders. Naval Aviation plays a central role in every naval mission. Unfortunately, the tools of naval aviation's power, its aircraft, are becoming alarmingly old. The average age of the naval aviation inventory is in excess of eighteen years old. The nerve center of today's sophisticated aircraft, wiring, is also aging and ... |
|
| Structural and Functional Brain Repair Studies of PD Models by Novel Neurosurgical, PET and MRI/MRS Methods |
SEP 2000 |
122 pages |
| Authors:
Ole Isacson; MCLEAN HOSPITAL BELMONT MA
|
| This work develops a methodology to assess the acute toxicity induced by the MPTP treatment in a neurotoxic model of Parkinson's disease. Secondly, the progressive loss of dopamine axons can be diagnostically measured by positron emission tomography (PET) and using specific ligands such as CFT. Third, we are addressing whether xenogeneic dopamine neurons can replace the neurons lost by the neurotoxic process. We will also compare neurotransplantation with pallidotomy. The ... |
|
| Nonintrusive Diagnostic Strategies for Arcjet Stream Characterization |
APR 2000 |
37 pages |
| Authors:
Douglas G. Fletcher; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCHCENTER
|
| In the previous lecture, the issues related to arcjet flow modeling were introduced, and the limitations of conventional instrumentation in addressing these issues were discussed The general level of understanding of the arcjet flows was seen to preclude the use of arcjets as aerothermodynamic test facilities beyond the current role in aerothermal material testing, despite their long test duration capability. In this section, the focus will be on new developments ... |
|
| Diagnostic Tools and Reclamation Technologies for Mitigation Impacts of DoD/DOE Activities in Arid Areas |
JAN 2000 |
79 pages |
| Authors:
W. K. Ostler; DEPARTMENT OF ENERGY LAS VEGAS NV NEVADA OPERATIONS OFFICE
|
| An essential component of monitoring to determine the spatial extent and degree of military impact is the ability to accurately assess site changes through time as training areas undergo normal use under varying climatic conditions. Historically, monitoring techniques have been primarily limited to expensive, labor-intensive ground collection of data such as plant canopy cover by line-point or line-intersect methods, and plant density by quadrat sampling techniques. Additionally, accessibility to the ... |
|
| Real-Time 3-D Ultrasonic Diagnostic Imager for Battlefield Applications |
DEC 1999 |
26 pages |
| Authors:
Timothy White; LOCKHEED MARTIN INFRARED AND IMAGING SYSTEMS LEXINGTON MA
|
| This final report describes the accomplishments of a two phase, three year technology demonstration program whose goal was "to develop a 2-D acoustic array which incorporates VLSI technology and demonstrate it's imaging capability in a portable ultrasound imager". During Phase I (year 1), Lockheed Martin demonstrated ultrasound imaging at 5 MHz using an electronic scanned, two- dimensional hybrid transducer array and an acoustical lens. The hybrid array was constructed by ... |
|
| Safety Climate Assessment in Naval Reserve Aviation Maintenance Operations |
SEP 1999 |
104 pages |
| Authors:
Todd J. Oneto; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Naval Aviation's annual Class A' Flight Mishap rate is commonly used as a measure of safety effectiveness. Interventions implemented over the past four decades greatly reduced mishap occurrence by focusing on aircrew and supervisory error. Less attention has been paid to the role maintenance plays in Naval Aviation mishaps, though it is consistently responsible for approximately 16 percent of all Class A' Flight Mishaps. In 1998, ... |
|
| Impact Damage Identification of Composite Structures with Built-in Piezoelectric Sensor/Actuator Networks |
1999 |
36 pages |
| Authors:
Calvin S. Wang; J. H. Park; Fu-Kuo Chang; STANFORD UNIV CA DEPT OF AERONAUTICS AND ASTRONAUTICS
|
| An investigation was performed to develop a self-diagnostic technique using a built-in piezoelectric wafer network to detect damage and to identify the extent of the damage in fiber-reinforced composite plates resulting from foreign-object impact. The principle of the technique was to use built-in piezoelectric wafers as actuators to generate stress waves and also use the neighboring piezoelectric wafers as sensors to receive the propagating waves. The difference in sensor measurements ... |
|
| Advanced Instrumentation and Measurements for Early Nondestructive Evaluation of Damage and Defects in Aerostructures and Aging Aircraft |
AUG 1998 |
81 pages |
| Authors:
Jan Achenbach; Isaac M. Daniel; Sridhar Krishnaswamy; NORTHWESTERN UNIV EVANSTON IL
|
| This report details the KU part of an AFOSR sponsored Vanderbilt/ Northwestern University Research Initiative (URI) project. The project was divided into several tasks. New laser based ultrasonic techniques were developed including a Sagnac interferometer. This interferometer is a common-path device that is robust enough to be operated in the field. An adaptive heterodyne interferometer using photorefractive recording media was also developed for detecting ultrasound ... |
|
| Engine Condition Monitoring System for the Canadian Forces F404-GE-400 Engine |
24 APR 1998 |
|
| Authors:
M. Pare; D. Muir; DEPARTMENT OF NATIONAL DEFENCE OTTAWA (ONTARIO)
|
| With the acquisition of the CF-18 fighter aircraft in 1982, the Canadian Forces have developed advanced engine condition monitoring techniques and software programs to aid in the life cycle management of the General Electric F4O4-GE-4OO engine. The early programs that provided parts life and engine maintenance tracking have recently been replaced by PC-based, graphical user interface systems that not only provide configuration and usage management, but have diagnostic and prognostic ... |
|
| Avionics/Electronics Quick Reliability Assessment |
MAR 98 |
78 pages |
| Authors:
G. Havey; S. Lewis; G. Seifert; HONEYWELL TECHNOLOGY CENTER MINNEAPOLISMN
|
| This report describes the Quick Reliability Assessment Tool (QRAT) developed under this effort. The QRAT is a configurable data acquisition device designed to collect, process, and store environmental data for military and commercial electronic systems. It is designed for easy transfer from one platform to another, and to operate on its own battery, independent of the platform. The battery is considerably larger than the QRAT device itself. Highly accurate sensor ... |
|
| Diagnostic Tools for the Monitoring and Organization of In-Situ Air Sparging Systems |
FEB 1998 |
247 pages |
| Authors:
Illa L. Amerson; ARIZONA STATE UNIV TEMPE DEPT OF CIVILENGINEERING
|
| In situ air sparging (IAS) involves injecting air into an aquifer to treat trapped contaminant sources, remediate dissolved contaminant plumes, and mitigate dissolved contaminant plume migration. The injected air also provides a source of oxygen for aerobic biodegradation of contaminants. Although the principle of the technology is simple, the practical aspects of effectively monitoring and optimizing IAS systems remain problematic. Conventional monitoring approaches generally focus ... |
|
| A Graphical User Interface (GUI) for Automated Classification of Bradley Fighting Vehicle Shock Absorbers |
FEB 98 |
80 pages |
| Authors:
Patrick Sincebaugh; William Green; Gerard Rinkus; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
|
| In this report we describe a diagnostic system that is being utilized to evaluate the condition of armored vehicle shock absorbers. We begin by providing the motivation behind the development of the smart shock absorber test stand (SSATS). We then describe the theory required to evaluate the condition of shock absorbers. This theoretical discussion leads to a description of what real life data are acquired during a shock absorber test, ... |
|
| Loss-Prevention and Risk-Mitigation by Reducing False-Alarms in Equipment Protection Systems |
1998 |
12 pages |
| Authors:
Philip P. Corso; TRIP-A-LARM CORP DEERFIELD BEACH FL
|
| Like death and taxes Equipment Protection System failures (alarms) are undesirable, unpredictable, unwarranted, and unexplainable. 95% of industrial alarms are false, 99% in aircraft, and 99.9% in security systems. They excite management, incite environmentalists, spur regulatory agencies, and frighten many. Product loss and wasted resources are obvious consequences. Not so obvious is the negative impact on safety. Fail-safe... shutdown upon failure. .. doesn't make the situation safer. Instead, there's a ... |
|
| Implementing a Reliability Centered Maintenance Program at NASA's Kennedy Space Center |
1998 |
9 pages |
| Authors:
Raymond E. Tuttle; Robert R. Pete; EG AND G FLORIDA COCOA
|
| Maintenance practices have long focused on time based "preventive maintenance" techniques. Components were changed out and parts replaced based on how long they had been in place instead of what condition they were in. A reliability centered maintenance (RCM) program seeks to offer equal or greater reliability at decreased cost by insuring only applicable, effective maintenance is performed and by in large part replacing time based maintenance with condition based ... |
|
| Telemedicine: Federal Strategy is Needed to Guide Investments |
FEB 97 |
104 pages |
| Authors:
GENERAL ACCOUNTING OFFICE WASHINGTON DC NATIONAL SECURITY AND INTERNATIONAL A FFAIRS DIV
|
| During a deployment in the Western Pacific region, a sailor aboard the U.S.S. Abraham Lincoln became seriously injured and was seen and treated by a specialist in San Diego-6,000 miles away. Doctor and patient were linked by telemedicine, which, in its broadest sense, refers to the use of communications technology to help deliver medical care without regard to the distance that separates the participants. In addition to the Department of ... |
|
| Photorefraction as a Diagnostic Tool for InP |
18 DEC 96 |
11 pages |
| Authors:
Gregory J. Salano; ARKANSAS UNIV FAYETTEVILLE DEPT OF PHYSICS
|
| The phase shift between the intensity pattern and the index pattern in two-wave mixing experiments has been determined from measured values of photorefractive two-wave mixing gain and diffraction efficiency in a bulk InP:Fe crystal as a function of the total incident intensity. Remarkably, the phase shift varies from 0 to 180 degrees with a value of 90 degrees at the intensity for which the two-wave mixing gain peaks Comparison between ... |
|
| New High-Pressure Diagnostic Technique |
21 OCT 96 |
8 pages |
| Authors:
Richard N. Zhare; STANFORD UNIV CA DEPT OF CHEMISTRY
|
| Our research goal was to develop nonintrusive, laser-based optical diagnostic tools for the investigation of trace amounts of molecular species in hostile environments such as plasmas, flashes, flames and other combustion forms. By extending our study on spectroscopic applications of degenerate four- wave mixing (DFWM), we proposed to exploit a new absorption technique, Cavity Ring-Down Spectroscopy (CRDS), which is, in many ways, complementary to other methods for the investigation of ... |
|
| Combat Surgical Ultrasound System and Probes with Multi-Modality Image Fusion for Front Line Surgical Guidance and Telesurgery |
OCT 1996 |
24 pages |
| Authors:
David R. Pickrell; TRS CERAMICS INC STATE COLLEGE PA
|
| This TRP-SBIR project addressed the synthesis and characterization of single crystal relaxor ferroelectrics for high performance bio-medical transducers. The ability to grow single crystals of various relaxor-based compositions with specific crystallographic orientations offers piezoelectric, dielectric and electro-mechanical properties not achievable in polycrystalline PZT ceramics. Limitations associated with the multi-domain state of polycrystalline ceramics are eliminated in single crystals. Consequently, these single crystals will exhibit better temperature stability allowing devices to ... |
|
| Novel Strip Test for Circulating Hormones |
OCT 1996 |
32 pages |
| Authors:
Judith L. Erb; IA INC ANN ARBOR MI
|
| During Phase I, IA, Inc. successfully demonstrated the feasibility of developing a strip test capable of distinguishing between levels of estrone-3-glucuronide'(EI-g) typical of a woman's fertile period and those typical of the non-fertile period .This level of discrimination will permit 72 hour advance notice of impending ovulation, making the strips a useful tool in family planning in that they provide sufficient advance notice of ovulation to allow for the lifetime ... |
|
| Biological Sensors and Multiorgan Diagnostic Screening Physiographic Personnel Monitor |
OCT 1996 |
26 pages |
| Authors:
Martin C. Baruch; David W. Gerdt; Charles M. Adkins; EMPIRICAL TECHNOLOGIES CORP CHARLOTTESVILLE VA
|
| The Phase I effort has established the feasibility of a heartbeat and respiration sensor with high sensitivity based on a fiber optic coupler that will fit within the dimensions of a wrist watch. Radio frequency transmission tests have demonstrated the feasibility of using a custom designed IC with on- board antenna and driver circuitry to transmit the sensor's low frequency signal to a receiver unit over a distance of one ... |
|
| Evaluation of a Vibration Diagnostic System for the Detection of Spiral Bevel Gear Pitting Failures |
SEP 96 |
14 pages |
| Authors:
Dennis P. Townsend; James J. Zakrajsek; Robert F. Handschuh; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER
|
| A vibration diagnostic system was used to detect spiral bevel gear surface pitting fatigue in a closed loop spiral bevel gear fatigue test rig. The diagnostic system consists of a personal computer with an analog to digital conversion board, a diagnostic system unit and software. The diagnostic system performs time synchronous averaging of the vibration signal and produces a vibration image of each tooth on any gear in a transmission. ... |
|
| The Development and Construct Validation of the Small Unit Equal Opportunity Climate Survey |
SEP 96 |
43 pages |
| Authors:
Robert M. McIntyre; Robert Albright; Mickey R. Dansby; Arlene Pace; DEFENSE EQUAL OPPORTUNITY MANAGEMENT INST PATRICK AFB FL
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| An equal opportunity climate survey suitable for use at small units is a needed supplement to the standard Military Equal Opportunity Climate Survey (MEOCS). The standard MEOCS uses a critical incident approach to assess a military unit's equal opportunity climate. However, many small military units lack the racial and gender diversity needed for critical incident measures. This report describes the creation of a climate assessment instrument suitable for use at ... |
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| Assessment of Diesel Engine Condition Using Time Resolved Measurements and Signal Processing |
SEP 96 |
129 pages |
| Authors:
Joseph E. Bell; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| An experimental investigation was conducted to access methods of detecting, and localizing faults in a diesel engine. A three cylinder, two stroke Detroit 3-53 engine was heavily instrumented for time resolved measurements. In particular, a 3,600 count per revolution optical encoder was used along with accelerometers mounted on various engine structures, in-cylinder pressure measurements and a variety of steady state sensors, such as exhaust temperatures. A large number of baseline ... |
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