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Standard

Solenoid, Electrical, General Specification For

2020-10-19
WIP
AS40401A
This specification covers the general requirements for electrical solenoids used to actuate various devices through the conversion of electrical signals into mechanical motion. These solenoids are of the axial stroke type and the rotary stroke type.
Standard

Filter Element Cleaning Methods

2020-10-09
CURRENT
AIR787B
This SAE Aerospace Information Report (AIR) provides technical information to assist the development of specific cleaning methods for those filter elements which are designated as "cleanable" and cannot be cleaned by simple and obvious procedures.
Technical Paper

Toward a Corrosion Proof Braking System

2020-10-05
2020-01-1625
The manuscript firstly overviews the corrosion potentials of several components used in disk-brake systems. Particular attention is devoted to the couplings between materials with different nobility. It is demonstrated that if two materials: a) show a difference in their corrosions potential (Ecorr) >100mV; and b) are in electric contact in the presence of an electrolyte; they can form a galvanic couple (GC) which could undergo severe corrosive phenomena. In the second part, the paper focuses on the anodized Aluminium (ANOD-Al)-stainless steel (SS) GC. This couple is investigated since: 1) anodized Al and SS are often comprised in high-end braking systems and typically constitute the caliper body (anodized Al) and several components (springs, pins, screws, metal plates, rods, shims etc.) included; and 2) it shows one of the largest corrosion potential difference among all materials included in a braking system (>500mV).
Technical Paper

Design Analysis of Multipole Sensor Magnet for Peel off Strength of the Plastic Bonded Magnet from the Metal Cup

2020-09-25
2020-28-0493
In this paper, the study of plastic bonded magnetic material is studied for the surface adhesion of the material on to the surface of a metal cup. The bonded magnetic material is formed as a mixture of plastic material blended with ferrite or NdFeB Magnetic powder. The amount of magnetic material used is confined to the magnetic property of the magnetic powder that can exhibit the required magnetic performance as higher rotational speed and higher temperature. The magnet is injection moulded onto the outer circumference of the metal cup. The magnet is bonded onto the metal surface which is of cup shape and this assembly is magnetized to form a multipole magnet. This multipole magnet is designed to withstand high centrifugal force during the magnet rotation at higher rpm say 40000 rpm.
Technical Paper

Enhancing the Mechanical and Metallurgical Behavior of Post-Processing on Friction Stir Processed AA8011 with NiTi-SMAs and Si3N4 Surface Hybrid Composites

2020-09-25
2020-28-0419
This limited research was extended to study the modification surface amendment of materials through Friction Stir Process (FSP) with nanoparticle addition followed by the post-processing method. In this paper, strengthened core and surface properties of AA8011 has been enhanced by adding nanoparticles such as Nitinol shape memory alloy (NiTi-SMAs) and silicon nitrate (Si3N4) through FSP followed by two different way of post-processing techniques like case hardening, case harden with shot peening. During FSP the use of NiTi-SMAs and Si3N4 as reinforcement interlocked the grains in hybrid nano composites of the processed zone. Also besides, post-processing promises a performance enhancement of core and surface hardness, ultimate tensile strength, impact strength and homogeneous distribution which was observed through scanning electron microscopic observations.
Technical Paper

Effect of Shot Peening Exposure Time on Mechanical Behavior of Al 7075-T6 Alloy

2020-09-25
2020-28-0430
This investigation addresses the effect of exposure time applied through shot peening as one of the severe plastic deformation technique on mechanical behavior of Al 7075-T6 alloy. Shot peening induces hardened layer in the surface region due to work-hardening effect by shot peening. The specimen shot peened for 105 s (SP105) exhibited highest values of tensile strength (591 MPa), yield strength (550 MPa) and surface hardness (265 VHN) as compared with untreated specimen with 568 MPa, 504 MPa and 184 VHN respectively. The increment in tensile properties are due to rapid improvement in the surface work-hardening by virtue of peening treatment with 105 s duration. In contrast, the shot peened alloy exhibited lower percentage elongation and higher surface roughness as compared with untreated one. The surface morphology and roughness studies before and after the treatment analyzed by suitable characterization.
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