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Viewing 1 to 30 of 6295
2017-09-19
Technical Paper
2017-01-2149
Cameron S. Gillespie
As carbon fiber reinforced plastics (CFRP) become integrated more and more into the design of aircraft structures, aircraft manufacturers are demanding higher speed and efficiency CFRP deposition systems. To facilitate the manufacture of large surface area and low contour parts (wing skins, in this case) at a high production rate, Electroimpact has developed a new Automated Fiber Placement (AFP) end effector consisting of twenty 1.5” wide pre-preg carbon tows. The new head design has been named the ‘OH20’, short for ‘One and a Half Inch, 20 Tows’. This AFP head format creates a deposition swath over 30 inches wide when all 20 tows are active. Two of these AFP end effectors have been integrated with a quick change robotic tool changer on a high speed, high acceleration, and accurate moving beam gantry. All end effector loading, maintenance, and cleaning can be accomplished in a maintenance cell while the other AFP head is in use depositing CFRP in the part cell.
2017-09-04
Technical Paper
2017-24-0116
Ekarong Sukjit, Pansa Liplap, Somkiat Maithomklang, Weerachai Arjharn
Abstract In this study, two oxygenated fuels consisting of butanol and diethyl ether (DEE), both possess same number of carbon, hydrogen and oxygen atom but difference functional group, were blended with the waste plastic pyrolysis oil to use in a 4-cylinder direct injection diesel engine without any engine modification. In addition, the effect of castor oil addition to such fuel blends was also investigated. Four tested fuels with same oxygen content were prepared for engine test, comprising DEE16 (84% waste plastic oil blended with 16% DEE), BU16 (84% waste plastic oil blended with 16% butanol), DEE11.5BIO5 (83.5% waste plastic oil blended with 11.5% DEE and 5% castor oil) and BU11.5BIO5 (83.5% waste plastic oil blended with 11.5% butanol and 5% castor oil). The results found that the DEE addition to waste plastic oil increased more HC and smoke emissions than the butanol addition at low engine operating condition.
2017-08-30
Event
2017-08-21
WIP Standard
AMS2690D
This specification defines the equipment, procedures, and requirements for joining leads by parallel gap resistance welding. For attaching leads by parallel gap resistance welding in the assembly of microelectronic circuitry to thin film substrates.
CURRENT
2017-08-17
Standard
AMS3793/3C
This specification covers three classes of para-aramid tape and webbing of a single width and with varying weights.
CURRENT
2017-08-07
Standard
J576_201708
This SAE Recommended Practice is intended as a guide toward standard practice and is subject to change to keep pace with experience and technical advances. This document establishes additional performance requirements and provides test methods and requirements to evaluate the suitability of plastic material or materials intended for optical applications in motor vehicles. The tests are intended to determine physical and optical characteristics of the material or materials only. Performance expectations of finished assemblies, including plastic components, are to be based on tests for lighting devices, as specified in SAE Standards and Recommended Practices for motor vehicle lighting equipment.
CURRENT
2017-08-04
Standard
AMSR25988A
This specification covers oil-and-fuel-resistant fluorosilicone elastomer rubber sheets, strips, molded parts, and extruded shapes for aeronautical and aerospace applications.
CURRENT
2017-08-02
Standard
AS3209A
Scope is unavailable.
2017-07-20
WIP Standard
J1928
This SAE Standard covers the minimum requirements for design, construction, and testing of devices to prevent the propagation of backfire flame from within the gasoline engine to the surrounding atmosphere.
CURRENT
2017-07-17
Standard
AMS3255B
This specification establishes the requirements for an expanded polytetrafluoroethylene (EPTFE) in the form of sealing tape, gaskets, or sheets requiring no mixing or curing.
2017-07-17
Book
Polymer Matrix, Metal Matrix, and Structural Sandwich Composites 6-Volume Set: • Volume 1: Guidelines for Characterization of Structural Materials • Volume 2: Materials Properties • Volume 3: Materials Usage, Design, and Analysis • Volume 4: Metal Matrix Composites • Volume 5: Ceramic Matrix Composites • Volume 6: Structural Sandwich Composites This 6-volume set includes critical properties of composite materials that meet specific data requirements, as well as guidelines for design, analysis, material selection, manufacturing, quality control, and repair. This newly-updated engineering reference tool, part of the Composite Materials Handbook (CMH-17), also contains the latest test data for polymer matrix composites and metal matrix composites, as well as essential material relating to sandwich composites and ceramic matrix composites used in military and commercial vehicles.
CURRENT
2017-07-17
Standard
AMS2482E
This specification establishes the requirements for a hard aluminum oxide coating, impregnated or codeposited with polytetrafluoroethylene (PTFE) on aluminum alloys.
CURRENT
2017-07-13
Standard
J1717_201707
SAE J1717 is an advisory document suggesting minimum recommended testing, appearance evaluation, and protocol for specifying the recommendations with regard to Singular Unassembled Automotive Interior Trim Parts.
CURRENT
2017-07-13
Standard
AMS3681E
This specification covers an electrically-conductive adhesive supplied as two components, a silver-filled, epoxy-base adhesive and a separate curing agent which may be paste or liquid.
CURRENT
2017-07-13
Standard
J2749_201707
This recommended practice is a guideline for generating high strain rate tensile properties under defined conditions of unreinforced and reinforced plastics used in the automotive industry. Several types of test specimens are identified to suit different types of materials and test rates. This document is intended for strain rates between 10-3/s and 103/s. Test procedures for rates of 10-2/s and below; i.e., quasi-static conditions, are described in ASTM D 638 and ISO 527-1. The procedures in this document include quasi-static testing in order to provide a common test rate for both quasi-static and dynamic test programs. The general procedures listed in ASTM D 638 and ISO 527-1 should be followed when appropriate. The main purpose of this document is to determine the relative effects of increasing strain rate on the measured material properties. Data generated from these tests are comparative in nature.
CURRENT
2017-07-12
Standard
J2642_201707
This SAE Recommended Practice is intended to establish uniform procedures for developing specifications for automotive thermoplastics. It is intended for use by automotive companies and their suppliers of molded and/or fabricated parts from thermoplastic materials.
2017-07-11
WIP Standard
AMS3217/8A
This specification covers a high temperature, compression set and fluid resistant fluorocarbon (FKM) rubber stock in the form of molded test slabs. Material has improved low temperature sealing (-30°C Tg) and improved compatibility to a variety of advanced gas turbine engine oils (HTS-type). In application, these reference slabs would be an extension of AMS 3217A (Standard Elastomer Stocks) - AMS 3217/8A is proposed.
CURRENT
2017-07-07
Standard
AS85848/2A
SCOPE IS UNAVAILABLE.
2017-06-26
White Paper
WP-0001
NASA has embarked on an ambitious program to integrate additive manufacturing techniques and to develop processes for the microgravity environment. The most recent example of this program is the successful launch and deployment of the first 3D printer on the International Space Station. In this one-year effort, students were required to meet a series of milestones to design, manufacture, and test their ideas in close cooperation with members of the NASA Exploration Augmentation Module (EAM) concept team.The participants in this project were tasked with thinking of new solutions using AM that would simultaneously be recyclable with minimal loss in mechanical properties but also have the capacity for high mechanical properties. Working in interdisciplinary teams, the participant teams investigated the use of recycled materials, characterization, testing, modeling, and tool development.
CURRENT
2017-06-22
Standard
AS6414A
This specification is applicable to the processes that are used in the manufacture of aerospace elastomer parts utilizing materials conforming to AMS7XXX series specifications, user specifications, or print on a Purchase Order (PO) that calls out this document for aerospace applications. The elastomer parts are in the form of O-rings, plate seals and other compression seals.
CURRENT
2017-06-20
Standard
AS85848/1A
SCOPE IS UNAVAILABLE.
CURRENT
2017-06-19
Standard
AS7115A
This document has been declared "CANCELLED" as of June 2017 and has been superseded by PRI AC7115. By this action, this document will remain listed in the Numerical Section of the Aerospace Standards Index noting that it is superseded by PRI AC7115. Cancelled specifications are available from SAE.
CURRENT
2017-06-16
Standard
J1525_201706
This SAE Recommended Practice describes a lap shear test method for use in measuring the bonding characteristics of automotive-type adhesives for joining fiber reinforced plastics (FRPs) to themselves and to metals.
CURRENT
2017-06-09
Standard
ARP4912C
This SAE Aerospace Recommended Practice (ARP) provides recommendations on cavity design, the installation of elastomer type spare seals in these cavities, and information surrounding elastomer material properties after contact with typical shock absorber hydraulic fluid(s) or grease. This ARP is primarily concerned with the use of spare seals on shock absorbers where only a single dynamic seal is fitted and in contact with the slider/shock absorber piston at any one time. These shock absorbers typically have a spare (dynamic) seal gland located on the outer diameter of the lower seal carrier. This spare seal gland is intended to house a spare elastomer contact seal. Split Polytetrafluoroethylene (PTFE) backup rings can also be installed in the spare seal cavity. During operation, if the fitted dynamic shock absorber standard seal begins to fail/leak, then the aircraft can be jacked up, allowing the lower gland nut of the shock absorber to be dropped down.
CURRENT
2017-06-07
Standard
J948_201706
These methods of test are applicable for determining the resistance to snagging and abrasion of automotive bodycloth, vinyl, and leather.
2017-06-05
Technical Paper
2017-01-1880
Guojian Zhou, Xiujie Tian, Keda Zhu, Wei Huang, Richard E. Wentzel, Melvyn J. Care, Kaixuan Mao, Jiu Hui Wu
Abstract A flexible rebound-type acoustic metamaterial with high sound transmission loss (STL) at low frequency is proposed, which is composed of a flexible, light-weight membrane material and a sheet material - Ethylene Vinyl Acetate Copolymer (EVA) with uneven distributed circular holes. STL was analyzed by using both computer aided engineering (CAE) calculations and experimental verifications, which depict good results in the consistency between each other. An obvious sound insulation peak exists in the low frequency band, and the STL peak mechanism is the rebound-effect of the membrane surface, which is proved through finite element analysis (FEA) under single frequency excitation. Then the variation of the STL peak is studied by changing the structure parameters and material parameters of the metamaterial, providing a method to design the metamaterial with high sound insulation in a specified frequency range.
2017-06-05
Journal Article
2017-01-1813
James M. Jonza, Thomas Herdtle, Jeffrey Kalish, Ronald Gerdes, Taewook Yoo, Georg Eichhorn
Abstract The aerospace industry has employed sandwich composite panels (stiff skins and lightweight cores) for over fifty years. It is a very efficient structure for rigidity per unit weight. For the automobile industry, we have developed novel thermoplastic composite panels that may be heated and shaped by compression molding or thermoforming with cycle times commensurate with automotive manufacturing line build rates. These panels are also readily recycled at the end of their service life. As vehicles become lighter to meet carbon dioxide emission targets, it becomes more challenging to maintain the same level of quietness in the vehicle interior. Panels with interconnected honeycomb cells and perforations in one skin have been developed to absorb specific noise frequencies. The absorption results from a combination and interaction of Helmholtz and quarter wave resonators.
Viewing 1 to 30 of 6295

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