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Fluid, Jet Reference

AMS G9 Aerospace Sealing Committee
  • Aerospace Material Specification
  • AMS2629F
  • Current
Published 2020-03-12 by SAE International in United States
This specification covers a mixture of liquid hydrocarbons and soluble additives.
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OEM Plastic Parts Repair

Motor Vehicle Council
  • Ground Vehicle Standard
  • J1573_201910
  • Current
Published 2019-10-24 by SAE International in United States
This SAE Recommended Practice defines the information required to repair the various types of plastics found on modern light-duty highway vehicles. Information is included for the repair and refinishing of most plastic body parts, both interior and exterior. Repair information is described for all commonly used plastics including, but not limited to, polyurethanes, polycarbonate blends, modified polypropylenes, polyethylenes and nylons. Repairs can be made to these types of plastics using two-part (2K) repair adhesives, plastic welding, and other materials available from body shop suppliers. When a new type of plastic is being introduced to the market through a new vehicle program, specific repair and refinishing procedures should be provided, following the format in this document. Sheet-molded compounds (SMC), fiber-reinforced plastics (FRP) and carbon fiber reinforced plastics can also be repaired using slightly different procedures and repair materials.
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Increase of Compressor Performance through the Use of Microstructures

Bionic Surface Technologies GmbH-Mikel Garcia de Albeniz, Peter Adrian Leitl
RINA-Emiliano Costa, Stefano Barberis
Published 2019-10-07 by SAE International in United States
Turbomachinery efficiency is becoming more and more relevant in order to reduce fuel consumption and mechanical wear of machines at the purpose of increasing their environmental sustainability and reliability. Optimized material identification and design is therefore of paramount importance. This paper describes how turbomachines can be optimized thanks to the effect of microstructures suitably created over the shapes of their constituting components in order to increase the overall efficiency via a simple coating solution. These structures, called riblets, consist of tiny streamwise grooved surfaces which are such to reduce drag in the turbulent boundary layer. Theoretical, numerical and experimental experiences gave a first estimation of the impact of riblets in industrial compressors. In this case, the riblet structures reduce the aerodynamic shear stress losses. The areas of higher interest are the diffuser and the volute, where the higher losses happen. The optimal size, position and effect on performance were analysed via simulation. The use of such an effective numerical means may give a precise evaluation about benefits in terms of efficiency increase as well as…
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Portable Electrochemical Sensing System

  • Magazine Article
  • TBMG-35141
Published 2019-09-01 by Tech Briefs Media Group in United States

An electrochemical sensing system that significantly improves the ability to rapidly and accurately detect heavy metals in biological and environmental samples was developed. Using a simple blood sample from a finger prick, the system identifies and eliminates exposure to toxic metals such as lead. These dangerous elements continue to pose a significant health concern, especially to children.

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Glossary of Carbon Steel Sheet and Strip Terms

Sheet and Strip Steel Committee
  • Ground Vehicle Standard
  • J940_201907
  • Current
Published 2019-07-29 by SAE International in United States
This glossary is intended to provide engineers, metallurgists, and production personnel with uniform definitions of commonly used carbon sheet and strip terms. The glossary serves to supplement information and photographs reported in SAE J810, J763, J877, J863, and J403. Many of the terms listed apply only to hot-dipped zinc-coated products or to uncoated products. The letter C following the term identifies a term applying to coated materials, while the letters NC identify a term applying to uncoated materials. Where no identification is provided, the term is common to both.
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Smartphone Test Spots Poisoned Water Risk

  • Magazine Article
  • TBMG-34731
Published 2019-07-01 by Tech Briefs Media Group in United States

Researchers have developed a biosensor that attaches to a smartphone and uses bacteria to detect unsafe arsenic levels. The device generates easy-to-interpret patterns similar to volume-bars that display the level of contamination.

Electrical Characterization of Crystalline UO2, THO2 and U0.71TH0.29O2

  • Magazine Article
  • TBMG-34527
Published 2019-06-01 by Tech Briefs Media Group in United States

Tracking and identifying radiation sources in the age of nuclear proliferation and well- resourced non-state actors is a national priority. Current neutron detection methods favor large detector volumes and long data collection times. Additionally, portable neutron detection methods have persistent problems with low signal-to-noise (small pulse height) and require large applied voltages.

Micro UV Aerosol Detector

  • Magazine Article
  • TBMG-34637
Published 2019-06-01 by Tech Briefs Media Group in United States

The detection of aerosols within fluid samples can be accomplished by optical methods. Such methods are useful in detecting potentially harmful aerosols such as biological aerosols that may be present after a biological agent attack or industrial accident. It is well known that biological molecules fluoresce when excited by ultraviolet (UV) radiation. As a result, biological molecules in an aerosol sample can be optically detected by irradiating the sample with ultraviolet radiation and observing the fluorescence response. Since differing excitation wavelengths may be used to detect different classes of biological molecules, the excitation wavelength can be chosen to detect specific classes of biological molecules such as proteins, flavinoids, and metabolite products.

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Electrical Characterization of Crystalline UO2, THO2 and U0.71TH0.29O2

Aerospace & Defense Technology: June 2019

  • Magazine Article
  • 19AERP06_08
Published 2019-06-01 by SAE International in United States

Evaluating the suitability of advanced alloys for use in uranium-based neutron detectors.

Tracking and identifying radiation sources in the age of nuclear proliferation and well-resourced non-state actors is a national priority. Current neutron detection methods favor large detector volumes and long data collection times. Additionally, portable neutron detection methods have persistent problems with low signal-to-noise (small pulse height) and require large applied voltages.

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Researchers Create Smartphone System to Test for Lead in Water

  • Magazine Article
  • TBMG-34421
Published 2019-05-01 by Tech Briefs Media Group in United States

Researchers at the University of Houston have created an inexpensive system that can detect lead in tap water at levels commonly accepted as dangerous, using a lens made with an inkjet printer and a smartphone.