Browse Topic: Washers

Items (946)
This specification covers metric aircraft quality spacers for use as positioners for tubes, flat washers for use as load spreaders, galling protection of adjacent surfaces and or material compatibility, and key or tab washers for use as locks for bolts, nuts, and screws
E-25 General Standards for Aerospace and Propulsion Systems
Metal cutting/machining is a widely used manufacturing process for producing high-precision parts at a low cost and with high throughput. In the automotive industry, engine components such as cylinder heads or engine blocks are all manufactured using such processes. Despite its cost benefits, manufacturers often face the problem of machining chips and cutting oil residue remaining on the finished surface or falling into the internal cavities after machining operations, and these wastes can be very difficult to clean. While part cleaning/washing equipment suppliers often claim that their washers have superior performance, determining the washing efficiency is challenging without means to visualize the water flow. In this paper, a virtual engineering methodology using particle-based CFD is developed to address the issue of metal chip cleanliness resulting from engine component machining operations. This methodology comprises two simulation methods. The first is the virtual chip test
Jan, JamesKhorran, AaronHall, MarkTorcellini, SabrinaDoody, David
This SAE Aerospace Recommended Practice (ARP) provides guidelines for the application of polymeric bearings for linear actuation systems. Design considerations are included for recommended fit and function in conjunction with material selection and load-bearing capability
A-6C2 Seals Committee
This SAE Recommended Practice includes wheel mounting elements subject to standardization in a series of industrial and agricultural disc wheels. The disc may be reversible or nonreversible and concave or convex. (See Figure 1 and Table 1
MTC8, Tire and Rim
To establish design recommendations that will provide a basis for safe and reliable connections to threaded screw-type or stud-type electrical equipment terminations. These recommendations are directed primarily, but not solely, to the aerospace and ground support equipment industries. Since individual design criteria may alter the details as outlined, it is therefore important that this SAE Aerospace Information Report (AIR) not be considered mandatory but be used only as a design guidance
AE-8C2 Terminating Devices and Tooling Committee
This specification covers three series of environment resisting, circular, miniature electrical connectors (plugs and receptacles) with removable crimp and/or nonremovable solder contacts, and accessories. The connectors are only recommended for replacement and are not specified for aircraft applications (refer to AS50881
AE-8C1 Connectors Committee
The IC engine still plays an important role in global markets, although electrified vehicles are highly demanded in some markets. Emission requirements for stoichiometric operation are challenging. This requires the bolted joints for turbo, EGR (Exhaust Gas Recirculation) and exhaust manifold to work under much higher temperature than before. How to avoid fastener breakage due to bolt bending caused by cyclic changes of the thermal conditions in engines is a big challenge. The temperatures of the components in the exhaust, EGR (Exhaust Gas Recirculation) and turbo systems change from ambient temperature to about 800 ~ 1000 °C when engines run at peak power with wide-open throttle. The temperature change induces catastrophic cyclic bending and axial strain to the fasteners. This research describes a method to reduce the cyclic bending displacement in the fasteners using a low friction washer. Mathematical modeling and FEA methods have been employed to specify the design space based on
Zhang, WenshengWang, BingxuBarber, GaryLamonaca, Gianni
This SAE Standard covers 32 types of clamps most commonly and suitably being used on OEM coolant, fuel, oil, vacuum, and emission systems
Non-Hydraulic Hose Committee
The objective of this work is to analyze the signal of a piezoelectric washer installed under the spark plug and to compare the combustion metrics evaluated with such signal to the indexes from a standard piezoelectric sensor for the in-cylinder pressure measurement, considered as the reference. In the first part of the article, the spectrum analysis of the piezoelectric washer pressure trace is proposed. It is demonstrated how such a signal can be used to measure the main combustion and knock indexes. Nevertheless, due to the intrinsic characteristics of the system, the knock index evaluated from the raw pressure trace cannot be directly used to estimate the instantaneous knock intensity. For this reason, a model-based algorithm for Real-Time (RT) application is developed to calculate a corrective factor of the high-frequency content of the signal. With such an algorithm, the logarithmic mean value of the Maximum Amplitude of Pressure Oscillation (MAPO) can be accurately evaluated
Brusa, AlessandroMecagni, JacopoCorti, EnricoSilvestri, Nicola
E-25 General Standards for Aerospace and Propulsion Systems
This procurement specification covers plain helical lock washers made of corrosion-resistant steel.of the type identified under the Unified Numbering System as UNS S30200
E-25 General Standards for Aerospace and Propulsion Systems
This SAE Information Report is provided as an advisory guide. Individual application discretion is recommended. The content has been presented as accurately as possible, but responsibility for its application lies with the user. The document covers a number of the variables in the torque-tension relationship: friction, materials, temperature, humidity, fastener and mating part finishes, surfaces, and the kind of tightening tools or equipment used. Also described in this document is the torque management required to achieve satisfactory fastened joint tightening. This guide is limited in application to clearance fit threads, such as the common 6g/6H class of fit. Other thread types including interference fit, mechanical locking, prevailing torque, or forms other than ISO-metric may apply to some aspects of this standard but are not specifically covered. The procedures described in this document are based on general factors for the determination of the torque-tension relationship for the
Fasteners Committee
This procedure is used to test and evaluate the resistance of fastener surface finishes to laboratory salt spray testing
USCAR
This SAE Recommended Practice applies to fasteners/fixing nuts as specified in SAE J694 and SAE J1835 used for disc wheels and demountable rim attachment respectively. Only the test methods necessary to ensure proper wheel or rim assembly are specified. Fasteners for less common and special applications are not included
Truck and Bus Wheel Committee
E-25 General Standards for Aerospace and Propulsion Systems
To establish design recommendations that will provide a basis for safe and reliable connections to threaded screw-type or stud-type electrical equipment terminations. These recommendations are directed primarily, but not solely, to the aerospace and ground support equipment industries. Since individual design criteria may alter the details as outlined, it is therefore important that this SAE Aerospace Information Report (AIR) not be considered mandatory, but be used only as a design guidance
AE-8C2 Terminating Devices and Tooling Committee
This SAE Standard provides a comprehensive list of guidelines for the selection, identification, and control of metric- and inch-sized fasteners for use in shipboard applications for both shipbuilder installed joints and for use in shipboard components. This guidance includes the following: a Fastener material selection. b Fastener thread form and fit selection. c Selection of fastener finish, when needed. d Selection of locking devices and elements, when needed. e Selection of screw thread fastener inserts, when needed. f Use of fastener part or identifying numbers. g Identification marking requirements
Ship Systems - Fasteners Committee
This SAE Standard covers material, dimensional, performance, and test requirements for metric thread rolling screws suitable for use in general engineering applications
Fasteners Committee
This SAE Aerospace Standard (AS) covers devices whose primary function is the retention of fasteners, except for such devices that are integral with the item being retained
E-25 General Standards for Aerospace and Propulsion Systems
This SAE Recommended Practice establishes a uniform procedure for assuring the manufactured quality, installed utility, and performance of automotive powered gas/brake controls other than those provided by the vehicle manufacturer (OEM). These products are intended to provide driving capability to persons with physical disabilities. These products function as adaptive modifications to compensate for lost or reduced function in the extremities of the driver. Powered gas/brake control systems are not only designed to transfer foot functions to the hands or from one side of the body to the other, but to supplement by power, other than by the driver’s own muscular efforts, the force output of the driver
Adaptive Devices Standards Committee
This SAE Standard covers the dimensional and general specifications, including performance requirements, for carbon steel self-drilling tapping screws suitable for use in general applications having point Styles 2, 3, 4, and 5. It is the objective of this document to ensure that carbon steel self-drilling tapping screws, by meeting the mechanical and performance requirements specified, shall drill a hole and form or cut mating threads in materials into which they are driven without deforming their own thread and without breaking during assembly
Fasteners Committee
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