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Standard

Heat Treatment of Carbon and Low-Alloy Steel Parts, Minimum Tensile Strength Below 220 ksi (1517 MPa)

2019-06-17
CURRENT
AMS2759/1G
This specification, in conjunction with the general requirements for steel heat treatment covered in AMS2759, establishes the requirements for heat treatment of carbon and low-alloy steel parts to minimum ultimate tensile strengths below 220 ksi (1517 MPa). Parts are defined in AMS2759. Due to limited hardenability in these materials, there are size limits in this specification.
Standard

Polyamide Type 6-6, Plastic Moldings and Extrusions

2019-06-13
CURRENT
AMS3617F
This specification covers one type of nylon thermoplastic resin in the form of moldings and extrusions. These products have been used typically for parts requiring high strength and resistance to aircraft fuels and lubricants up to 120 degrees C (248 degrees F), but usage is not limited to such applications.
Technical Paper

Electromechanical Resonant Ice Protection Systems: How to Favour Fractures Propagation

2019-06-10
2019-01-2032
Many researches focus on piezoelectric ice protection systems with the objectives to develop light and low consumption resonant electromechanical systems for de-icing. These systems use the vibrations generated by piezoelectric actuators at resonance frequencies to produce shear stress at the interface between the ice and the support or to produce tensile stress in the ice. This article presents experimental results of de-icing tests performed with resonant piezoelectric systems that generate amplitudes of vibrations to exceed ice tensile strength or ice/support adhesive shear strength. The tests show that fractures are initiated but that the ice is not always completely detached. A methodology based on the energy release rate is presented to enable a better understanding of fractures initiation and propagation.
Standard

Insert, Screw Thread, Helical Coil, Metric Series, Standard Assembly Dimensions For

2019-05-28
WIP
MA1567C

This SAE Metric Aerospace Standard (MA) provides for helical coil screw thread inserts, both free running and self-locking, installation screw thread dimensional data and guidance on insert length selection. The document also provides formulas for determining requirements when non standard insert lengths are necessary.

Standard

Inspection of Ground, Chromium Plated Steel Parts

2019-05-28
WIP
AMS2440C
This specification covers the requirements for inspection of ground chromium plated surfaces for grinder-induced damage to the chromium plate and substructure. The specification also provides users with criteria for distinguishing between such damage and acceptable indications inherent to the chromium plate.
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