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Viewing 1 to 30 of 15466
2015-10-28
Event
2015-09-28 ...
  • September 28-October 7, 2015 (5 Sessions) - Live Online
Training / Education Online Web Seminars
Through the years, there has been a significant and increasing volume of fraudulent and counterfeit electronic parts entering the aerospace supply chain. Left undetected, these parts can pose significant performance, reliability, and safety risks. In response to these threats, the SAE AS6081 Counterfeit Electronic Parts Avoidance – Distributors standard was developed to provide uniform requirements, practices, and methods to mitigate the risk of electronics distributors purchasing and supplying these counterfeit electronic parts throughout the aerospace supply chain.
2015-09-21 ...
  • September 21, 2015 (8:30 a.m. - 4:30 p.m.) - Seattle, Washington
Training / Education Classroom Seminars
The September offering of this seminar will be conducted at the Sheraton Seattle Hotel and held in conjunction with the SAE 2015 AeroTech Congress & Exhibition. Register for this offering and you can register to attend the SAE 2015 AeroTech Congress & Exhibition for 25% off the classic member event rate. Please contact our Customer Service department at +1.877.606.7323 (U.S. and Canada only) or +1.724.776.4970 (outside U.S. and Canada) to register for SAE 2015 AeroTech Congress & Exhibition at this special rate.
2015-09-21 ...
  • September 21-22, 2015 (8:30 a.m. - 4:30 p.m.) - Seattle, Washington
Training / Education Classroom Seminars
The September offering of this seminar will be conducted at the Sheraton Seattle Hotel and held in conjunction with the SAE 2015 AeroTech Congress & Exhibition. Register for this offering and you can register to attend the SAE 2015 AeroTech Congress & Exhibition for 25% off the classic member event rate. Please contact our Customer Service department at +1.877.606.7323 (U.S. and Canada only) or +1.724.776.4970 (outside U.S. and Canada) to register for SAE 2015 AeroTech Congress & Exhibition at this special rate. The requirements for producing an FAA approved replacement part can be daunting.
2015-08-05 ...
  • August 5, 2015 (8:30 a.m. - 4:30 p.m.) - Tysons, Virginia
Training / Education Classroom Seminars
Counterfeit electronic parts have been found in almost every sector of the electronics industry and continue to be an increasing threat to electronic hardware. This threat poses significant performance, reliability and safety risks. Aerospace industry organizations, in particular, must produce and continually improve safe and reliable products that meet or exceed customer and regulatory authority requirements.
2015-08-03 ...
  • August 3-4, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
  • December 14-15, 2015 (8:30 a.m. - 4:30 p.m.) - Troy, Michigan
Training / Education Classroom Seminars
This seminar introduces participants to all aspects of threaded fasteners including nomenclature, geometric considerations, metallurgy, material properties, applied stresses, and considerations for fatigue, corrosion, brittle fracture and temperature. Methods are developed for the analysis and design of bolted joints under axial and shear loads. Other topics include assembly practice and methods to control preload.
2015-08-03 ...
  • August 3-4, 2015 (8:30 a.m. - 4:30 p.m.) - Tysons, Virginia
Training / Education Classroom Seminars
Through the years there has been a significant and increasing volume of fraudulent and counterfeit electronic parts entering the aerospace supply chain. Left undetected, these parts can pose significant performance, reliability, and safety risks. In response to these threats, the SAE AS6081 Counterfeit Electronic Parts Avoidance – Distributors standard was developed to provide uniform requirements, practices, and methods to mitigate the risk of electronics distributors purchasing and supplying these counterfeit electronic parts throughout the aerospace supply chain.
2015-06-15
Technical Paper
2015-01-2364
Xianpai Zeng, Jared Liette, Scott Noll, Rajendra Singh
The vibration isolation effectiveness of powertrain mount configurations is examined for electric vehicle application by focusing on the deteriorating effect introduced by internal mount resonances. Unlike internal combustion engines where mounts are typically designed only for static support and low frequency dynamics, electric motors have higher excitation frequencies in a range where mount resonances often occur. The problem is first analytically formulated by considering a simple 2-dimensional powertrain system. It is shown that by modifying the mount shape, the mount resonance(s) can be shifted while maintaining the same static rate. Further, vibration isolation is improved over a narrow frequency range by using non-identical mounts that split mount resonance peaks. Then a computational model for a realistic drive unit (containing electric motor, power invertor, and differential case) is considered.
2015-06-15
Technical Paper
2015-01-2225
Peng Yu, Tong Zhang, Jing Li, Shiyang Chen, Rong Guo
Faced on transient vibration of EV, considering the characteristics of the electric drive system, active and passive integrated transient vibration control method of power train mounting system was proposed. First, models of power train system and mounting system were established, modal characteristics were grasped by simulation and experiment; a feed-forward controller was constructed from the active control perspective, mounting system transient vibration and power train torsion vibration were reduced; based on this, further optimization of mounting system was conducted from a passive control perspective. Results show that the active and passive integrated control method can effectively reduce the dynamic reaction force of mounting points, improve the vibration conditions of power train and body as well.
2015-06-15
Journal Article
2015-01-2178
Mohamed El Morsy, Gabriela Achtenova
When localized fault occurs in a bearing, the periodic impulsive feature of the vibration signal appears in time domain, and the Corresponding bearing characteristic frequencies (BCFs) emerge in frequency domain. However, one limitation of frequency-domain analysis is its inability to handle non-stationary waveform signals, which are very common when machinery faults occur. The common technique of Fast Fourier Transforms (FFT) and Envelope Detection (ED) are always used to identify faults occurring at the BCFs. In the early stage of bearing failures, the BCFs contain very little energy and are often overwhelmed by noise and higher-level macro-structural vibrations. In order to extract the weak fault information submerged in strong background noise of the gearbox vibration signal, an effective signal processing method would be necessary to remove such corrupting noise and interference. Optimal Morlet Wavelet Filter and Envelope Detection (ED) are applied in this paper.
2015-06-15
Technical Paper
2015-01-2212
A. Elsawaf, H. Metered, T. Vampola, Z. Sika
This paper presents the particle swarm optimization (PSO) algorithm to search about the optimum feedback controller gains for the active mount suspension, for the first time, to reduce the transmitted vibrations to the suspended mass placed over a structure. A mathematical model and the equations of motion of the structure system with an active mount suspension are derived and simulated using Matlab/Simulink software. The proposed PSO algorithm aims to minimize the acceleration of the suspended mass as the objective function with constraint of the actuator force. System performance criteria are evaluated in both the time and frequency domains in order to count the effectiveness of the proposed controller. The simulation results reveal that the proposed feedback controller gains tuned by PSO algorithm offer a significant improvement of the vibration isolation compared with both the passive and active mount controlled using the linear quadratic regulator (LQR).
2015-06-15
Technical Paper
2015-01-2190
Manchi Venkateswara Rao, S Nataraja Moorthy, Prasath Raghavendran
Mount development and optimization plays a significant role in vehicle NVH refinement as they significantly influence overall driving experience. Dynamic stiffness is a key parameter that directly affects the mount performance. Conventional dynamic stiffness evaluation techniques are cumbersome and time consuming. The dynamic stiffness of mount depends on the load, frequency of application and the displacement. The above parameters would be far different in the test conditions under which the mounts are normally tested when compared to operating conditions. Hence there is need to find the dynamic stiffness of mounts in actual vehicle operating conditions. In this paper, the dynamic stiffness of elastomeric mounts is estimated by using a modified matrix inversion technique popularly termed as operational path analysis with exogenous inputs (OPAX).
2015-05-20
WIP Standard
AS4130C
Scope is unavailable.
2015-05-20
WIP Standard
AS4136C
Scope is unavailable.
2015-05-20
WIP Standard
AS4134C
Scope is unavailable.
2015-05-19
Standard
AS9132B
This standard defines uniform quality and technical requirements relative to metallic parts marking performed using "data matrix symbology" within the aviation, space, and defense industry. ISO/IEC 16022 specifies general requirements (e.g., data character encodation, error correction rules, decoding algorithm). In addition to ISO/IEC 16022 specification, part identification with such symbology is subject to the requirements in this standard to ensure electronic reading of the symbol. The marking processes covered by this standard are as follows: - Dot Peening - Laser - Electro-Chemical Etching Further marking processes will be included, if required. Unless specified otherwise in the contractual business relationship, the company responsible for the design of the part shall determine the location of the data matrix marking. Symbol position should allow optimum illumination from all sides for readability. This standard does not specify information to be encoded.
2015-05-13
WIP Standard
AS45909A
The specification covers the requirements for locked-in studs. The method of locking in the stud is by means of a serrated collar and an accessory lockring with matching serrations installed within the parent material to prevent rotation.
2015-05-13
Standard
AMS3733C
This specification covers a highly filled epoxy potting compound supplied as a two-component system.
2015-05-13
Standard
AMS3647D
This specification covers polyfluoroethylenepropylene in the form of film and sheet 0.020 inch (0.51 mm) and under in nominal thickness. These products have been used typically for electrical, electronic, and mechanical applications requiring a chemically-inert film of the fluorocarbon family, having high dielectric strength and volume resistivity, and being free from pinholes and electrical flaws. Usage is not limited to such applications.
2015-05-13
Standard
AMS3652D
This specification covers one grade of polytetrafluoroethylene (PTFE) resin in the form of film, normally produced by skiving. This film has been used typically for gaskets and other parts for use up to 260 degrees C (500 degrees F) where chemical resistance or anti-stick characteristics are required but where high mechanical or electrical characteristics are not important, but usage is not limited to such applications.
2015-05-13
WIP Standard
AS4726A
This specification establishes the requirements for self-locking nuts, wrenching type (i.e., hexagon, double hexagon, and spline drive), made of a corrosion and heat resistant steel of the type identified under the Unified Numbering System as UNS S66286. Classification: a. 220 ksi minimum tensile strength at room temperature and b. 850 degrees F maximum test temperature of parts. Primarily for use in aerospace propulsion systems in temperatures up to approximately 850 degrees were nuts are used with bolts capable of developing 220 ksi axial tensile strength at room temperature, and having UNJ thread form.
2015-05-12
WIP Standard
ARP5448/4A
This test method outlines a recommended procedure for performing bond integrity tests of bonded peelable woven fabric reinforced polytetrafluoroethylene (PTFE) liners, hereafter referred to within this document as "PTFE liner" or "liner". The data from these tests shall be used to determine if the product meets the "bond integrity" requirements of the applicable specifications.

Bearings covered by this test method shall be plain shperical, track roller, journal or rod end bearing with PTFE liners.

2015-05-12
Standard
J1939DA_201505
This document is intended to supplement the J1939 documents by offering the J1939 information in a form that can be sorted and search for easier use. The J1939 Digital Annex, introduced in August 2013, offers key J1939 technical data in an Electronic Spreadsheet that can be easily searched, sorted, and adapted to other formats. J1939DA contains all of the SPNs (parameters), PGNs (messages), and other J1939 data previously published in the SAE J1939 top level document. J1939DA also contains all of the SLOTs, Manufacturer ID Codes, NAME Functions, and Preferred Addresses previously published in the SAE J1939 top level and the J1939-71 document. J1939DA contains the complete technical details for all of the SPNs and PGNs previously published in the SAE J1939-71 document. It also includes the supporting descriptions and figures previously published in the SAE J1939-71 document.
2015-05-11
WIP Standard
J2286
The interface document SAE J2286 revises the requirements for file formats as described in SAE J1924. This document describes Interface 1 (I/F 1) in SAE J2214, SAE J1708. This document does not imply the use of a specific hardware interface, but may be used with other hardware interfaces such as SAE J1939. The requirements of SAE J2286 supersede the requirements defined by SAE J1924.
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