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Improving competitiveness of Additive Manufacturing Aerospace serial parts

LISI AEROSPACE Additive Manufacturing-Maxime gas, Alexis RENE-CORAIL, Sebastien EYRIGNOUX, Guillaume IKER, Stephane SUDRE
  • Technical Paper
  • 2019-01-1900
To be published on 2019-09-16 by SAE International in United States
The interest of selective laser melting technology for aerospace parts is very high due to their high complexity and their freedom of design which allow functions integration. However, the competitiveness of Laser Beam Melting (LBM) machines for aerospace industry is limited by two major road blocks. On the one hand, basic parametric set sold with LBM machines are more oriented to historical qualification than productivity rates. For instance, the ongoing qualification on EOS M290 by AIRBUS COMMERCIAL AIRCRAFT only enables us to produce a hundred pieces per machine per year. On the other hand, wasted times between two consecutive manufacturing batches are significant and are impacting the yearly output of the machines. The present project focuses on two activities, focusing on the largest available machines, XLINE2000R and M400, in order to maximize the amount of pieces per build. The first one was the improvement of parametric set productivity, to reduce production time, while keeping material and mechanical properties. We focused on main aerospace materials: titanium alloys, aluminum alloys (Scalmalloy®) and nickel-chromium-based superalloys. The second one…
 
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The Influence of SLD Drop Size Distributions on Ice Accretion in the NASA Icing Research Tunnel

NASA John Glenn Research Center-Mark G. Potapczuk
Ohio Aerospace Institute-Jen-Ching Tsao
Published 2019-06-10 by SAE International in United States
An ice shape database has been created to document ice accretions on a 21-inch chord NACA0012 model and a 72-inch chord NACA 23012 airfoil model resulting from an exposure to a Supercooled Large Drop (SLD) icing cloud with a bimodal drop size distribution. The ice shapes created were documented with photographs, laser scanned surface measurements over a section of the model span, and measurement of the ice mass over the same section of each accretion. The icing conditions used in the test matrix were based upon previously used conditions on the same models but with an alternate approach to evaluation of drop distribution effects. Ice shapes resulting from the bimodal distribution as well as from equivalent monomodal drop size distributions were obtained and compared. Results indicate that the ice shapes resulting from the monomodal and bimodal drop size distributions had similar shapes, but the bimodal distributions had greater mass and volume measurements and icing limits that extended further back on the chord of the model.
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Matrix-Free Assisted Laser Desorption Ionization Using Metal-Organic Frameworks

  • Magazine Article
  • TBMG-34534
Published 2019-06-01 by Tech Briefs Media Group in United States

Matrix-assisted laser desorption/ionization (MALDI) is a soft ionization technique that is widely applied in the characterization of large biomolecules using various mass spectrometry (MS) analyzers, specifically, time-of-flight (TOF) analyzers. The MALDI process involves the deposition of an analyte solution onto a metal substrate before the addition of a matrix. The matrix/analyte dry spot is exposed to a UV laser, and the laser energy that is absorbed by the matrix/analyte is converted into heat energy that initiates charge transfer, which results in the desorption of the matrix and analyte molecules in ionized form. The positive ions are then accelerated through a vacuum into MS analyses.

 
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Using Laser Metal Printing to Cool Computer Chips

  • Magazine Article
  • TBMG-34595
Published 2019-06-01 by Tech Briefs Media Group in United States

Traditionally, electronics are cooled using a heat sink that transfers the heat generated by the electronic system into the air or a liquid coolant. For the heat sink to work, it has to be attached to the CPU or the graphics processor via a thermal interface material such as thermal paste. It helps facilitate the transfer of heat by bridging microscopic gaps between the heat sink and the chip.

 
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Cross-Training Made Possible by Common Control Platform

  • Magazine Article
  • TBMG-34579
Published 2019-06-01 by Tech Briefs Media Group in United States

EMAG L.L.C. is the U.S. subsidiary of a major German machine tool builder that specializes in machine tools for the production of automotive, off-highway, agricultural, and oil field components. The company’s equipment ranges from basic round part turning centers to large-workpiece, five-axis machining centers; gear hobbing machines; and alternative equipment such as laser welding and electrochemical machining centers. This wide variety of machine tools requires an assortment of control technologies to power and manage the motion. For one customer requirement where a major agricultural equipment builder needed grinding, turning, and turn-grind machines, EMAG looked to Siemens for a standardized CNC solution.

 
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Aerospace & Defense Technology: June 2019

  • Magazine Issue
  • 19AERP06
Published 2019-06-01 by SAE International in United States
Eyes in the Sky Rugged High-Speed Cameras Capture Critical Flight Test Video DataPanoramic Thermal Imaging Technology A New Concept in Naval DefenseCoating Technology Enables Effective Missile CountermeasuresFACE™ - Future Airborne Capability Environment Diminishing U.S. Combat Superiority Drives New Software Development RequirementsBroadband 1.2- and 2.4-mm Gallium Nitride (GaN) Power Amplifier DesignsMulti-Agent RF Propagation SimulatorElectrical Characterization of Crystalline UO2, THO2 and U0.71TH0.29O2 Evaluating the suitability of advanced alloys for use in uranium-based neutron detectors.ONR Short Pulse Research, Evaluation and non-SWaP Demonstration for C-sUAV Study Research project is designed to map small unmanned aerial vehicle (sUAV) effects space, empirically and by simulation, as a function of high power microwave (HPM) waveform to develop effective countermeasures.Matrix-Free Assisted Laser Desorption Ionization Using Metal-Organic FrameworksMachining Titanium Aero-FramesGetting the Most Out of Industrial CT Scanning Industrial CT analysis software uncovers aerospace manufacturing defects that scanning alone might miss.Aerospace Work Platforms - More than Meets the Eye Today's work platforms are far more complex than the simple designs of the past.
 
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The ‘Relativity’ of High Q Capacitors

  • Magazine Article
  • TBMG-34557
Published 2019-06-01 by Tech Briefs Media Group in United States

For many high-power RF applications, the “Q factor” of embedded capacitors is one of the most important characteristics in the design of circuits. This includes products such as cellular/telecom equipment, MRI coils, plasma generators, lasers, and other medical, military, and industrial electronics.

 
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Matrix-Free Assisted Laser Desorption Ionization Using Metal-Organic Frameworks

Aerospace & Defense Technology: June 2019

  • Magazine Article
  • 19AERP06_10
Published 2019-06-01 by SAE International in United States

Army Research, Development and Engineering Command, Aberdeen Proving Ground, Maryland

Matrix-assisted laser desorption/ionization (MALDI) is a soft ionization technique that is widely applied in the characterization of large biomolecules using various mass spectrometry (MS) analyzers, specifically, time-of-flight (TOF) analyzers. The MALDI process involves the deposition of an analyte solution onto a metal substrate before the addition of a matrix. The matrix/analyte dry spot is exposed to a UV laser, and the laser energy that is absorbed by the matrix/analyte is converted into heat energy that initiates charge transfer, which results in the desorption of the matrix and analyte molecules in ionized form. The positive ions are then accelerated through a vacuum into MS analyses.

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Industrial Blue Lasers

  • Magazine Article
  • TBMG-34415
Published 2019-05-01 by Tech Briefs Media Group in United States

Industrial lasers are integrated into manufacturing and fabrication facilities around the world. Every moment, there is an industrial laser somewhere that is cutting, etching, or welding. But the energy from traditional industrial lasers is not absorbed well by copper, so using them for copper processing has been slow and produced inferior quality.

 

Advances in Laser Welding Technology

  • Magazine Article
  • TBMG-34420
Published 2019-05-01 by Tech Briefs Media Group in United States

There have been many changes in laser technology over the past 30 years. With each advancement comes new challenges and opportunities. The CO2 laser with 10-micron wavelength was king for many of those years because it was versatile, from cutting thin to thick plates and welding fast while maintaining high quality welds. A little over 10 years ago, high brightness 1-micron wavelength fiber and disk lasers came into the market with great promise. Everyone thought the higher absorption in steel (from ~5% up to now ~40%) (Figure 1) was the holy grail for faster, better and greater flexibility in laser processing, with a 200% increase in energy efficiency.