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Horais Rideshare Conference Briefing Potential Benefits of Increased Access to Space for Secondary Payloads

DARPA 6/30/2008 | 0 (0) | 42 | 0 | 0 | English
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Achieving the Potential of Materials Prognosis for Turbine Engines - Prognosis Bidders Conference

DARPA 6/30/2008 | 0 (0) | 53 | 1 | 0 | English
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The Prognostic Requirement for Advanced Sensors and Non Traditional Detection Technologies - Prognosis Bidders Conference

DARPA 6/30/2008 | 0 (0) | 66 | 2 | 0 | English
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Prognosis Concept and Potential Implementation Plan - Prognosis Bidders Conference

DARPA 6/30/2008 | 0 (0) | 52 | 0 | 0 | English
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A Prognostic Development Methodology with Demonstration Examples - Prognosis Bidders Conference

DARPA 6/30/2008 | 0 (0) | 48 | 1 | 0 | English
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Electronic Structural Analysis of Refractory Alloy Glasses via Synchrotron Radiation

DARPA 6/30/2008 | 0 (0) | 47 | 0 | 0 | English

Tokarz 12/3/03 Electronic Structural Analysis of Refractory Alloy Glasses via Synchrotron Radiation Abstract: Bulk forms of Refractory Alloy Glasses (RAGs) of the composition Ni60Nb37Sn3 have recently been synthesized for potential use in structural applications. Modeling efforts of such metallic glasses have traditionally involved the use of hard  ... more>>

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On the Glassy State as a Path for Novel Aluminum Alloys

DARPA 6/30/2008 | 0 (0) | 39 | 0 | 0 | English

On the Glassy State as a Path for Novel Aluminum Alloys Metallic glass aluminum alloys are now being considered for applications in the aerospace industry as such alloys offer a significant increase in specific strength over current aluminum alloys. However, metallic glass alloys often exhibit low ductility and as a consequence of this, have found  ... more>>

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Processing of Bulk Metallic Glass Foams by Melt Infiltration Techniques

DARPA 6/30/2008 | 0 (0) | 41 | 1 | 0 | English

Processing of Bulk Metallic Glass Foams by Melt Infiltration Techniques C. San Marchi, A. Brothers, and D. C. Dunand Department of Materials Science & Engineering, Northwestern University, Evanston, IL 60208 ABSTRACT Processing of bulk metallic glass (BMG) foams, using melt infiltration techniques, is reported for the first time. Foaming methods ba  ... more>>

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Methodology for Composite Durability Assessment

DARPA 6/30/2008 | 0 (0) | 55 | 2 | 0 | English
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Combining Model Analysis and Experimental Test Data for Optimal Determination of Failure Allowables

DARPA 6/30/2008 | 0 (0) | 39 | 2 | 0 | English

Combining Model Analysis and Experimental Test Data for Optimal Determination of Failure Allowables Success Stan Uryasev University of Florida uryasev@ufl.edu www.ise.ufl.edu/uryasev and American Optimal Decisions Failure CVaR Joint presentation with A.A. Trindade This effort was jointly accomplished by the Boeing led team and the United Stat  ... more>>

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Effect of Stress State on Flow and Fracture of Bulk Metallic Glass

DARPA 6/30/2008 | 0 (0) | 48 | 0 | 0 | English

Abstract 2 Effect of Stress State on Flow and Fracture of Bulk Metallic Glass P. Wesseling, P. Lowhaphandu and J.J. Lewandowski Tension and compression tests have been performed with high alignment fixtures on two different zirconium-based bulk metallic glass specimens at atmospheric pressure as well as with levels of superimposed hydrostatic pre  ... more>>

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Effect of CSRO on glass formation in binary systems

DARPA 6/30/2008 | 0 (0) | 38 | 0 | 0 | English

Effect of Compositional Short Range Order on Glass Formation in Binary Metallic System Hao Chen, Mahadevan Khantha and Takeshi Egami Department of Materials Science and Engineering, University of Pennsylvania Philadelphia, Pa 19104-6272, U.S.A. ABSTRACT Molecular Dynamics simulation was carried out to study the glass transition and crystallization  ... more>>

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Fracture Toughness and Fatigue of Amorphous Metals and Composites

DARPA 6/30/2008 | 0 (0) | 49 | 0 | 0 | English

Fracture Toughness and Fatigue of Amorphous Metals and Composites J.J. Lewandowski, S. Solv’yev and P Lowhaphandu The fracture toughness and fatigue crack growth behavior of both monolithic and composite materials based on bulk amorphous metals are being investigated. A variety of different stress states have been utilized to determine the effects  ... more>>

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Configuration Control of Tools and Data in AIM-C

DARPA 6/30/2008 | 0 (0) | 52 | 1 | 0 | English

2004P0022 Accelerated Insertion of Materials – Composites (AIM-C) Software Component Delivery Requirements Report No. 2004P0022 V_2.0.0 May 07, 2004 Boeing Originator – Original Issue Gail L. Hahn gail.l.hahn@boeing.com Boeing Phantom Works St. Louis, MO 63166 Primary Author: Dr. George Orient Boeing Rocketdyne Canoga Park, CA Copyright 2004 by  ... more>>

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Accelerated Insertion of Materials Industrial Perspectives on Polymer Matrix Composites

DARPA 6/30/2008 | 0 (0) | 40 | 1 | 0 | English

Accelerated Insertion of Materials – Industrial Perspectives on Polymer Matrix Composites by Gail L. Hahn The Boeing Company Mailcode S245-1018 8900 Frost Avenue Berkeley, MO 63134-1004 gail.l.hahn@boeing.com Phone: 314-233-1848 Fax: 314-777-6595 Session: Structural Composites, Keynote Address Text: In June 2001, a group of eight people from va  ... more>>

   
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