Spectralon Diffuse Reflectance Standards are highly Lambertian, with Spectralon. SRM-99 reflectance material being the most Lambertian reflector available ...

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Orme , M., and Smith, R. F. (September 1, 1999). "Enhanced Aluminum Properties by Means of Precise Droplet Deposition ." ASME. J. Manuf. Sci. Eng. August 2000; 122(3): 484–493. https://doi.org/10.1115/1.1285914

Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received Nov. 1998; revised Sept. 1999. Associate Technical Editor: K. Stelson.

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The use of molten aluminum droplets is investigated for potential application to precision droplet-based net-form manufacturing (PDM). In the proposed application, final structural components are made from the raw stock in one integrated operation by depositing molten metal droplets, layer after layer, via computer information. This work investigates the feasibility of the proposed technology by investigating the issues associated with generating molten aluminum droplets from capillary stream break-up, and examining the mechanical characteristics of the fabricated aluminum components. New results are presented which illustrate the generation of stable streams of molten aluminum droplets at rates of 24,000 droplets/second for a droplet stream speed of 10.9 m/s, corresponding to throughput rates of 2.3×10−4 kg/s (1.85 lb./hour). The droplets travel 2,500 droplet diameters in an inert environment before impingement with the substrate. Microstructural images are completely devoid of splat boundaries, which have been removed by remelting, and the grain size is approximately uniform throughout the field of view of the image that, in most cases presented, contains easily upwards of 30 splats. Also, it has been found that the presence of aluminum oxide in the melt does not influence the average grain size of the component. An oxide barrier however will encapsulate each grain if the oxides are not removed by filtration in the pre-jetting stage. The presence of aluminum oxide in the melt does not prohibit the removal of the splat boundaries. Mechanical analysis shows that fabrication with molten aluminum droplet deposition results in a 30 percent increase in ultimate tensile strength compared to the raw ingot stock. [S1087-1357(00)02402-3]

Sep 6, 2017 — In 1674, a Dutch draper and scientist by the name of Antony Van Leeuwenhoek became the first person to make and use a microscope for a ...

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Mar 17, 2013 — This frequency corresponds to a line spacing equal to the Sparrow criterion in Eq. (4.3). It is an absolute cutoff, with zero contrast between ...

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OMNISISTEM STINGER-50MC: Powerful Multi-Colored 250mW LaserThe Omnisistem Stinger-50MC comes locked and loaded with 25 of the most popular aerial laser ...

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Our designs operate the LEDs at conservative power levels and provide ample heat sinking so that the typical expected time to 80% of the initial brightness is ...

Polarize meaning in chemistry

polarized sunglasses – A polarized lens filters light to reduce glare from reflective surfaces. It allows you to see beneath the water's surface with clearer ...

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Define polarizedsunglasses

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There are 11 meanings listed in OED's entry for the noun polarization, two of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

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At Bridge Tronic Global, we have an equipment 'Newport-819 C-Spectralon Collimated Beam Integrating Sphere-54578' available for sale.

by W Koechner · 1970 · Cited by 460 — The results reveal that a Nd:YAG rod under pumped light becomes a positive lens with two focal lengths. The temperature dependent variation of the refractive ...

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Size: 2.5 mm (Metric) Hex chrome bit socket. Has a permanent stamped size marking clearly visible with an extra-deep outline. S2 steel bit. SHB32X3.