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Orbital Drilling Optimization in High Speed Machining and Fatigue Life Enhancement by Orbital Roller Burnishing : Application to an Aluminum Alloy

INSA Toulouse-Alain Daidie
Université Paul Sabatier Ups-Landry Arnaud Kamgaing Souop, Yann Landon, Johanna Senatore
  • Technical Paper
  • 2019-01-1861
To be published on 2019-09-16 by SAE International in United States
Orbital drilling has proved to be advantageous to achieve aeronautical-level quality drilling (surface roughness, geometry control…) fully adapted for complex assemblies in a single operation. However, compared to conventional drilling method, this process leads to a drastic change in structure's fatigue life probably due to a non-optimised level of residual stress. The control of the mechanical behaviour of parts obtained by orbital drilling is the goal of the European-CleanSky collaborative R&D project RODEO (Robotized Orbital Drilling Equipment and Optimized Residual Stresses, GA no.738219). In this work, an orbital drilling unit (ORBIBOT) allowing high-speed-machining conditions was developed by PRECISE France, that can be integrated on a lightweight industrial robot. Cutting parameters were determined through an original Tool-Material Couple optimization strategy dedicated to orbital drilling, developed with MITIS Engineering and carried out on aluminium alloy 2024-T351. In order to enhance the mechanical behaviour of the system (fatigue, surface hardening…), an innovative mechanical surface treatment has been introduced for investigations: orbital roller burnishing, performed right after orbital drilling. The burnisher follows a helical path around the hole axis.…
 
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Steel, Corrosion and Heat Resistant, Seamless Tubing 23Cr - 13.5Ni (309S) Solution Heat Treated

AMS F Corrosion Heat Resistant Alloys Committee
  • Aerospace Material Specification
  • AMS5574F
  • Current
Published 2019-07-31 by SAE International in United States
This specification covers a corrosion and heat resistant steel in the form of seamless tubing.
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Superfinishing of HVOF Applied Tungsten Carbide Coatings

AMS B Finishes Processes and Fluids Committee
  • Aerospace Material Specification
  • AMS2452
  • Current
Published 2019-07-15 by SAE International in United States
This specification covers requirements for the superfinishing of High Velocity Oxygen/Fuel (HVOF) applied tungsten carbide thermal spray coatings.
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Plating, Gold for Thermal Control

AMS B Finishes Processes and Fluids Committee
  • Aerospace Material Specification
  • AMS2425F
  • Current
Published 2019-07-15 by SAE International in United States
This specification covers the requirements for gold deposited on metal surfaces and the properties of the deposit.
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Titanium Alloy, Bars, Wire, and Rings 5Al - 2.5Sn Annealed, 110 ksi (758 MPa) Yield Strength

AMS G Titanium and Refractory Metals Committee
  • Aerospace Material Specification
  • AMS4926P
  • Current
Published 2019-06-20 by SAE International in United States
This specification covers a titanium alloy in the form of bars, wire, flash welded rings 4.000 inches (101.60 mm) and under in nominal diameter or least distance between parallel sides and 16 in2 (103 cm2) and under in cross-sectional area, and stock of any size for flash welded rings.
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Etching of Fluoropolymer Insulations

AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
  • Aerospace Standard
  • ARP6167
  • Current
Published 2019-06-11 by SAE International in United States
This SAE Aerospace Recommended Practice (ARP) describes the etching of fluoropolymer electrical wire insulations to ensure that all facets of the process from the chemistry to the processing, to the storage and handling are well defined.
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Titanium Alloy Bars, Forgings, and Rings 6Al - 4V Extra Low Interstitial (ELI) Duplex Annealed, Fracture Toughness

AMS G Titanium and Refractory Metals Committee
  • Aerospace Material Specification
  • AMS4931F
  • Current
Published 2019-06-11 by SAE International in United States
This specification covers a titanium alloy in the form of bars 6.000 inches (152.40 mm) and under in nominal diameter or least distance between parallel sides, forgings and flash welded rings 6.000 inches (152.40 mm) and under in thickness, and stock for forging and stock for flash welded rings of any size.
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Barkhausen Noise Inspection for Detecting Grinding Burns in High Strength Steel Parts

AMS K Non Destructive Methods and Processes Committee
  • Aerospace Standard
  • ARP4462B
  • Current
Published 2019-06-06 by SAE International in United States
This recommended practice establishes the requirements and procedures for Barkhausen Noise (BN) inspection of ferromagnetic steel components. Applications of the method are listed in 1.2 through 1.5.
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Tolerances Carbon Steel Bars

AMS E Carbon and Low Alloy Steels Committee
  • Aerospace Material Specification
  • AMS2231K
  • Current
Published 2019-05-29 by SAE International in United States
This specification covers established inch/pound manufacturing tolerances applicable to carbon steel bars ordered to inch/pound dimensions. These tolerances apply to all conditions, unless otherwise noted. The term “excl” applies only to the higher figure of the specified range.
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Titanium Alloy Bars, Wire, Forgings, Rings, and Drawn Shapes 4Al - 2.5V -1.5 Fe Annealed

AMS G Titanium and Refractory Metals Committee
  • Aerospace Material Specification
  • AMS6948B
  • Current
Published 2019-05-28 by SAE International in United States
This specification covers a titanium alloy in the form of bars, wire, forgings, flash welded rings, drawn shapes 5.000 inches (127.00 mm) and under, and stock for forging or flash welded rings of any size.
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