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Unsettled Technology Domains in Industrial Metrology

Muelaner Engineering, Ltd.-Jody E. Muelaner
  • Research Report
  • EPR2019003
To be published on 2019-10-15 by SAE International in United States
Within manufacturing, measurements are used to make decisions related to product verification and process control. The selection of production machines and instruments involves a trade-off to achieve the required accuracy while minimizing cost. Similarly, deciding on the level of confidence at which products are rejected is a trade-off between the cost of rejecting acceptable parts and the cost of passing substandard products to the customer. These trade-offs can only be optimized if the uncertainties are fully understood. Currently multiple methodologies are used to understand uncertainties and variation within manufacturing, such as Measurement Systems Analysis (MSA), Statistical Process Control (SPC), and uncertainty evaluation. Industry lacks a unified approach that provides a complete understanding of uncertainty. This means that optimal decisions cannot be made to maximize the profitability of production systems. NOTE: SAE EDGE™ Research Reports are intended to identify and illuminate key issues in emerging, but still unsettled, technologies of interest to the mobility industry. The goal of SAE EDGE™ Research Reports is to stimulate discussion and work in the hope of promoting and speeding resolution…
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Improvement of Mechanical Properties, and Optimization of Process Parameters of AISI 1050 Spheriodized Annealed Steel by Ranking Algorithm

SRM Institute of Science and Technology-Durai Kumaran, Sundar Singh Sivam Sundarlingam Paramasivam, Krishnaswamy Saravanan, Raj Rajendran
Tishk International University-Ganesh Babu Loganathan
  • Technical Paper
  • 2019-28-0143
To be published on 2019-10-11 by SAE International in United States
AISI 1050 is used in the production of landing gear, actuators and other aerospace components but their application is limited due to machinability of the material. In any metal cutting operation the features of tools, input work materials, machine parameter settings will influence the process efficiency and output quality characteristics. A significant improvement in process efficiency may be obtained by process parameter optimization that identifies and determines the regions of critical process control factors leading to desired outputs or responses with acceptable variations ensuring a lower cost of manufacturing. This experimental study elucidates the problems and machinability issues like failure of tools and accuracy are found while machining and less output in machining. In the present study of spherodizing heat treatment of AISI 1050 was investigated during the turning operation in CNC lathe, under the consideration of several turning process parameters. The microstructures of the as-received, and heated specimens were investigated by Optical Microscopy (OM). A correlation between various process parameters on the desired response namely surface finish, roundness Material Removal Rate (MRR), power consumption…
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Advances in Laser Welding of Stainless Steel Alloys

BSACIST-Varun Kumar Arulvizhi, Selvakumar Alandur Somasundaram, Mohammed Haareeskhan Niyaz, Pradeep Krishna Ranganathan, Afnan Zaid Moolai, Mohamed Ashfaq Ahmed Abdulla Burhanudeen, Mohan Raj Ramu
  • Technical Paper
  • 2019-28-0056
To be published on 2019-10-11 by SAE International in United States
As a fusion welding process, Laser welding has proven to be the most promising method for joining of different materials whether it can be either a similar or dissimilar material category. However, few complications still remain unanswered in joining of materials by laser process after successful implementation of laser’s by industries and also the commercial users in previous year’s such as workpiece preparation, fixture issues, atmospheric conditions, nozzle focus on the material, etc., This article will give an elaborate survey on joining of stainless steel alloys, though there are many factors to be considered here concentration is on the metallurgical behaviour and tensile properties of weldments joined by laser welding technique, because the main criteria for a weldment is to have a coarse grain boundary distribution which may be distorted due to high heat generation during a joining process and to possess good tensile strength in order to withstand the impacts given on the weldment when it is being practically deployed in usage. The material behavior of weldment is primarily based on the process parameters…
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Castings, Sand, Magnesium Alloy 5.1Y - 3.0Re - 0.70Zr (WE54A - T6) Solution and Precipitation Heat Treated

AMS D Nonferrous Alloys Committee
  • Aerospace Material Specification
  • AMS4426B
  • Current
Published 2019-09-19 by SAE International in United States
This specification covers a magnesium alloy in the form of sand castings.
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Orbital Forming of Automotive Wheel Bearings

Orbitform-Jake Sponsler
Published 2019-09-15 by SAE International in United States
Orbital forming is considered an optimal assembly process for many designs of automotive wheel bearing assemblies. More specifically, this process involves forming the spindle over the inner race of the wheel bearing to maximize surface area contact on the inner ring for retention, and to maintain bearing preload. The unique forming properties and precise controls allow orbital forming to produce an ideal finished retention feature and form for these types of bearings. This paper discusses the specific benefits of orbital forming of automotive wheel bearings. Forming basics, the physics behind the benefits of orbital forming, as well as pre-form lip geometry and other part design considerations are presented. Advanced machine control methodologies and historical machine process improvements are also reviewed concluding with next steps in process control and in-machine quality assurance.
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A Review of Spark-Assisted Compression Ignition (SACI) Research in the Context of Realizing Production Control Strategies

Clemson University-Dennis Robertson, Robert Prucka
  • Technical Paper
  • 2019-24-0027
Published 2019-09-09 by SAE International in United States
This paper seeks to identify key input parameters needed to achieve a production-viable control strategy for spark-assisted compression ignition (SACI) engines. SACI is a combustion strategy that uses a spark plug to initiate a deflagration flame that generates sufficient ignition energy to trigger autoignition in the remaining charge. The flame propagation phase limits the rate of cylinder pressure rise, while autoignition rapidly completes combustion. High dilution within the autoignited charge is generally required to maintain reaction rates feasible for production. However, this high dilution may not be reliably ignited by the spark plug. These competing constraints demand novel mixture preparation strategies for SACI to be feasible in production. SACI with charge stratification has demonstrated sufficiently stable flame propagation to reliably trigger autoignition across much of the engine operating map. A key controls challenge of SACI is the two regimes of combustion are near several constraints that may be competing. This work summarizes key findings from decades of research that can help enable production control strategies for SACI engines. A summary and analysis of the broad…
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AEROSPACE STANDARD PROTECTIVE COVER, CONNECTOR RECEPTACLE, REVERSE BAYONET COUPLING

AE-8C1 Connectors Committee
  • Aerospace Standard
  • AS95234/11
  • Current
Published 2019-08-27 by SAE International in United States
No Abstract Available.
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CONNECTOR RECEPTACLE, REVERSE BAYONET COUPLING, DUMMY STOWAGE

AE-8C1 Connectors Committee
  • Aerospace Standard
  • AS95234/12
  • Current
Published 2019-08-27 by SAE International in United States
No Abstract Available.
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PROTECTIVE COVER, CONNECTOR PLUG, REVERSE BAYONET COUPLING

AE-8C1 Connectors Committee
  • Aerospace Standard
  • AS95234/10
  • Current
Published 2019-08-27 by SAE International in United States
No Abstract Available.
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Nickel Alloy, Corrosion and Heat-Resistant, Investment Castings 53.3Ni - 16.5Cr - 17Mo - 4.5W - 5.8Fe - 0.40V (CW-12MW) As-Cast

AMS F Corrosion Heat Resistant Alloys Committee
  • Aerospace Material Specification
  • AMS5388K
  • Current
Published 2019-07-30 by SAE International in United States
This specification covers a corrosion and heat-resistant nickel alloy in the form of investment castings.
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