| Development of an Operational Multi-sensor and Multi-channel Aerosol Assimilation Package |
18 AUG 2011 |
12 pages |
| Authors:
Jianlong Zhang; Jeff Reid; Edward Hyer; James Campbell; Douglas Westphal; Nancy Baker; NORTH DAKOTA UNIV GRAND FORKS DEPT OF ATMOSPHERIC SCIENCES
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 | Accurate aerosol and visibility forecasts are critical to both civilian and military applications. To improve the Navy's electro-optical propagation forecast capability, the world's first operational aerosol assimilation model was developed for improving the short and long-term forecasts of NAAPS through the assimilation of the over-water MODIS aerosol products. In this project, the capability of over-land aerosol data assimilation was studied, a multi-sensor data assimilation technique was evaluated, and a prototype ... |
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| Nondestructive Evaluation (NDE) of Sintered Silicon Carbide and its Correlation to Microstructure and Mechanical Properties |
Dec-2008 |
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| Authors:
Douglas M Slusark; M V Demirbas; Andrew Portune; Steven Miller; Richard A Haber; Raymond Brennan; William Green; Ernest Chin; James Campbell; RUTGERS - THE STATE UNIV PISCATAWAY NJ
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 | High density is a critical acceptance criterion for armor ceramics. Quantifying the difference in density between what would be considered to be a good or bad region is complicated. As density is reduced from theoretical, does this infer the presence of defects? The minimum acceptable density that ensures favorable ballistic performance is unknown. This question concerns not only the presence of defective regions, which may include pores or inclusions, but ... |
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| New Low-Cost Manufacturing Methods to Produce Silicon Carbide (SiC) for Lightweight Armor Systems |
Dec-2008 |
8 pages |
| Authors:
Ernest Chin; James Campbell; Walter Roy; Jerry LaSalvia; Richard Palicka; Daniel Ashkin; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
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| Ceramic-based armors, commonly used in personnel protection, are actively being considered for platform vehicles due to their potential to dramatically reduce system weight. Silicon carbide (SiC) has been shown to hold considerable promise as the ceramic component in an armor system, and comes in several grades with differing costs. Hot pressed silicon carbide has been shown to provide excellent ballistic properties, but is manufactured at high cost and in limited ... |
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| Novel Processing of Boron Carbide (B4C): Plasma Synthesized Nano Powders and Pressureless Sintering Forming of Complex Shapes |
Dec 2008 |
8 pages |
| Authors:
James Campbell; Melissa Klusewitz; Jerry LaSalvia; Ernest Chin; Robert Speyer; Namtae Cho; Noel Vanier; Cheng-Hung Hung; Edward Abbott; Peter Votruba-Drzal; William Coblenz; Toni Marcheaux; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
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| Boron carbide, most often used in personnel armor systems, is rather difficult to form and is almost always densified from ceramic powders under heat and pressure. Recent developments by PPG and Georgia Tech are allowing for the full densification of nano-sized powders through a pressureless sintering route. PPG is manufacturing these powders in a plasma processing technique, and they are less expensive than traditionally produced powders. The powders are fonned ... |
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| Effects of Shot Peening Processing on the Fatigue Behavior of Three Aluminum Alloys and TI-AL-4V |
05 APR 2001 |
7 pages |
| Authors:
James Campbell; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
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| The fatigue strength of three shot-peened aluminum alloys (Al 7075-T651, Al 2024-T351 and Al 2014-T6) and a titanium alloy (Ti-6Al-4V) was measured to determine the differences in shot peening quality from three vendors that were given the same shot peening parameters. Shot peening produces surface roughness, a cold-worked layer and, most importantly, a residual stress layer that resists the propagation of fatigue cracks. Significant vendor-to-vendor differences in fatigue properties were ... |
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| PLASMA ALBUMIN AS AN ACCEPTOR OF FREE FATTY ACIDS, |
30-Jan-1964 |
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| Authors:
James Campbell; A D Martucci; G R Green; TORONTO UNIV (ONTARIO)
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| Plasma albumin was more effective in solubilizing oleate in an aqueous medium than any of five other proteins or dextran. The solubilizing effect occurred up to an oleate:plasma albumin molar ratio of 7.4, or a total free fatty acids:plasma albumin molar ratio of 7.8. Fraction V (albumin), and to a smaller extent fractions IV sub 1 and IV sub 4 of human plasma, permitted the transfer of free fatty acids ... |
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