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Machinability and parametric optimization of Inconel 600 using Taguchi-Desirability analysis under dry environment

Vellore Institute of Technology-Venkatesan Kannan, Devendiran Sundararajan, Abhishek Chahal, Devesh Raj
  • Technical Paper
  • 2019-28-0068
To be published on 2019-10-11 by SAE International in United States
Inconel 600 is a face-centered cubic structure and nickel-chromium alloy. Alloy 600 has good resistance to oxidation, corrosion resistant, excellent mechanical properties and good creep rupture strength at higher temperature. Alloy 600 is used in chemical and food processing, heat treating, phenol condensers, soap manufacture, vegetable, and fatty acid vessels. In this context, the present paper investigates the machinability characteristics of Alloy 600 under dry environment. Also, the parametric effect of cutting speed, feed rate and cutting depth on the force, surface roughness and tool wear are carried out using 3-Dimensional surface and 1-Dimensional plots. The optimal parameters are determined systematically based on Taguchi-desirability analysis with turned with TiAlN coated carbide insert. From the graphical analysis of collected data, the low rate of feed and moderate cutting for roughness and cutting force and average feed rate for tool wear with low cutting depth. Probability test at 95% confidence reveals the residual of machining data falls reasonably on a straight line and can be taken for factor optimization. Variance test reveals that the cutting depth (68.34%)…
 

Building Multiple Resolution Modeling Systems Using the High-Level Architecture

Univ. of Central Florida-Mario Marin, Kyungeun Lee, Edgar Gutierrez, Luis Rabelo
University of Central Florida-Gene Lee, JAEHO KIM
  • Technical Paper
  • 2019-01-1917
To be published on 2019-09-16 by SAE International in United States
The modeling and simulation pyramid in defense states it clearly: Multi-Level modeling and simulation are required. Models and simulations are often classified by the US Department of Defense into four levels—campaign, mission, engagement, and engineering. Campaign simulation models are applied for evaluation; mission-level simulations to experiment with the integration of several macro agents; engagement simulations in engineered systems development; and engineering-level simulation models with a solid foundation in structural physics and components. Models operating at one level must be able to interact with models at another level. Therefore, the cure (“silver bullet”) is very clear: a comprehensive framework for Multiple Resolution Modeling (MRM) is needed. In this paper, we discuss our research about how to construct MRM environments. Also, the utilization of the High-Level Architecture (HLA) is explained and in particular, the processes of verification and validation in these composite models. Three implementations in the areas of aerospace, navy ships, and infantry combat are utilized to illustrate the MRM simulation concepts.
 

Marine Electrical Switches

Marine Technical Steering Committee
  • Ground Vehicle Standard
  • J1320_201906
  • Current
Published 2019-06-06 by SAE International in United States
This SAE Recommended Practice covers the requirements for switches used in marine applications both under and over 50 V.
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Panoramic Thermal Imaging Technology

Aerospace & Defense Technology: June 2019

  • Magazine Article
  • 19AERP06_03
Published 2019-06-01 by SAE International in United States

A New Concept in Naval Defense

SPYNEL sensors are passive wide area surveillance systems with automatic intrusion detection and tracking capabilities. The 360° thermal sensors offer 24/7 situational awareness by detecting and tracking an unlimited number of targets in real time, on land, air and sea. HGH Infrared Systems recently won a multimillion contract from a leading shipyard, to equip three new warships with the latest generation of SPYNEL panoramic thermal cameras.

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Standard for Safety Glazing Materials for Glazing Motor Vehicles and Motor Vehicle Equipment Operating on Land Highways - Safety Standard

Glazing Materials Standards Committee
  • Ground Vehicle Standard
  • J3097Z26_201905
  • Current
Published 2019-05-28 by SAE International in United States
Specifications, test methods, and usage provisions for safety glazing materials used for glazing of motor vehicles and motor vehicle equipment operating on land highways.
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Sound Attenuation of Neoprene Wetsuit Hoods as a Function of Dive Depth and Acoustic Frequency: Hyperbaric Chamber Trials

  • Magazine Article
  • TBMG-34337
Published 2019-05-01 by Tech Briefs Media Group in United States

The U.S. Navy is interested in strategies that divers could employ to protect them from loud underwater sounds. Sonar transmissions and other forms of underwater sound, such as that produced by noisy underwater tools, are an occupational hazard for U.S. Navy divers.

 

Underwater Drone Technology

Aerospace & Defense Technology: May 2019

  • Magazine Article
  • 19AERP05_03
Published 2019-05-01 by SAE International in United States

Finding ways to overcome physical limitations so that humans can dive deeper and stay underwater longer has been an ongoing quest. Back in the 15th century, Leonardo Da Vinci drew sketches of a submarine and a robot. Had he thought to combine the two concepts, he would have created a prototype of an unmanned underwater vehicle, or underwater drone. Instead, the world had to wait another five hundred years.

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Monitoring a Nearshore Beneficial Use Site: Application of a Benthic Sled and Video Annotation

Aerospace & Defense Technology: May 2019

  • Magazine Article
  • 19AERP05_07
Published 2019-05-01 by SAE International in United States

Passive survey method provides less labor and resource intensive system for monitoring the effects of dredging on aquatic life in nearshore beneficial use sites.

The U.S. Army Corps of Engineers (USACE) Portland Districts (NWP) maintains safe and navigable waterways in Oregon through a variety of dredging projects, including channel deepening, and dredging sandbars. Placement of dredged sediment occurs at preselected, specific geographic areas categorized as nearshore beneficial use sites. Beneficial use sites are commonly monitored before, during, and after disposal, to evaluate dredge management practices and to avoid potentially adverse effects to the marine environment.

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Underwater Drone Technology

  • Magazine Article
  • TBMG-34329
Published 2019-05-01 by Tech Briefs Media Group in United States

Finding ways to overcome physical limitations so that humans can dive deeper and stay underwater longer has been an ongoing quest. Back in the 15th century, Leonardo Da Vinci drew sketches of a submarine and a robot. Had he thought to combine the two concepts, he would have created a prototype of an unmanned underwater vehicle, or underwater drone. Instead, the world had to wait another five hundred years.

 

Ducted Fuel Injection: Effects of Stand-Off Distance and Duct Length on Soot Reduction

Caterpillar Inc.-Kenth I. Svensson, Glen C. Martin
Published 2019-04-02 by SAE International in United States
Ducted fuel injection (DFI) has been shown to be an effective method to significantly reduce soot formation in mixing controlled compression ignition (MCCI) diesel combustion. This reduction has been demonstrated in both combustion vessels and in an optical engine. The mechanisms driving the soot reduction are to date not fully understood. Optimal duct configurations are also not immediately evident. The objective of this study is to show the effects of two geometric variables, namely distance from fuel injector orifice exit to duct inlet (0.1-6 mm) for a 2x14 mm duct, and duct length variation (8-14 mm) at a given stand-off distance of 0.1 mm.A 138 μm on-axis single-orifice injector operated at 100-250 MPa was used in a heated, continuous flow, constant pressure vessel with optical access. Results show that the shortest stand-off distance of 0.1 mm yields the greatest soot reduction for a 2x14 mm duct, but interpretation of this result is confounded by the fact that the ambient air entrained into the duct gets cooler and denser at shorter stand-off distances. Also, at the…
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