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Viewing 241 to 270 of 23377
Article
2014-04-28
AB Dynamics’ updated suspension parameter measuring machine (SPMM), the SPMM5000, is a fixed ground plane kinetics and compliance test machine that measures suspension parameters and characteristics like the SPMM4000 on which it is based.
Technical Paper
2014-04-28
Christian Fischer, Rainer Wagener, Tobias Melz, Heinz Kaufmann
Abstract The fatigue life approach is the main topic of structural durability. Improved methods for the numerical fatigue analysis should be based on experimental results. In some fields of material testing progress in research are very hard to achieve. Especially the regime of amplitudes below the knee point of the SN-curve with a huge number of load cycles to failure is one of these challenges with respect to fatigue tests. With standard testing devices, 108 to 1010 cycles cannot be achieved in a reasonable time span because of their low and limited testing frequencies or their inflexible control systems concerning variable amplitude loading. For this reason, a new piezo based testing facility has been developed by Fraunhofer LBF which is capable to master this challenge. Built up with a high performance piezo actuator and a specially designed high frequency load frame this testing facility enables test frequencies up to 1.000Hz and locking forces of 10kN. The control technique realises variable load amplitudes as well as variable frequencies to test materials under realistic load sequences.
Technical Paper
2014-04-28
Y. S. Thipse
Abstract Designers and analysts need to compare and conduct synthesis for selection of materials based on their properties involving simulation, optimization and correlation with test data. An example is that of acoustic material properties such as random and normal incidence sound absorption coefficient and sound transmission loss. The international test standards necessitate having standard operating procedures for characterization of these materials. This procedure is quite involved and addresses steps including test data acquisition, post processing, calculations, classification, report generation and most importantly, storage of such innumerable material properties in a structured manner to facilitate ease of retrieval and updating of properties. It is also highly desirable to have a synergy of the databank directly with simulation tools. Further, all of these steps need to be accurate, non-speculative and quick. In order to address all these diverse requirements, three cases of powerful knowledge based utilities are hereby presented.
Standard
2014-04-28
This SAE Recommended Practice is intended for testing of manual slack adjusters as they are used in service, emergency, or parking brake systems for vehicles that can be licensed for on-road use. Purpose This document establishes an accelerated laboratory test procedure for manual slack adjusters to determine their integrity and durability in various functional modes and environmental conditions.
Standard
2014-04-28
This SAE Recommended Practice provides definitions of common terms used in SAE Documents pertaining to motor vehicle lighting. It covers not only basic lighting terms but also terms which identify major segments of technical reports.
WIP Standard
2014-04-27
This specification covers quality assurance sampling and testing procedures used to determine conformance to applicable specification requirements of wrought carbon and low-alloy steel products and of forging stock.
Standard
2014-04-25
This SAE Standard defines a method for evaluating the immunity of automotive electrical/electronic devices to radiated electromagnetic fields coupled to the vehicle wiring harness. The method, called Bulk Current Injection (BCI), uses a current probe to inject RF onto the wiring harness in the frequency range of 1 to 400 MHz. BCI is one of a number of test methods that can be used to simulate the electromagnetic field.
WIP Standard
2014-04-25
This SAE Information Report defines the minimum performance specifications for accelerometers, load cells, and angular position transducers used within Anthropomorphic Test Devices (ATDs) when performing impact tests per SAE J211, "Instrumentation for Impact Test". This report does not define methodology and equipment for performing verification tests of the transducers. It is intended that any agency proposing to conduct tests in accordance with SAE J211 should be able to demonstrate that the transducers they use would meet the performance requirements specified in this information report. The purpose of this information report is to provide guidelines for choosing accelerometers, load cells, and angular position transducers for use in impact testing. The aim is to provide uniformity in transducer measurements, and provide a basis for meaningful comparisons of test results from different sources.
WIP Standard
2014-04-25
This specification covers both the material and the examination process of an inspection material in the form of a dispersion of magnetic particles in a controlled viscosity rubber base that cures at room temperature by addition of one or more curing agents. The test object is magnetized with the uncured rubber covering the area of interest. The magnetic particles then migrate to the leakage field caused by the discontinuity. As the rubber cures, discontinuity indications remain in place on the rubber. The product may be supplied in a variety of viscosities and colors. Magnetic Rubber Inspection is a nondestructive inspection technique used for detecting cracks or flaws on or near the surface of ferromagnetic materials. Its principal applications are in certain problem areas, such as: Areas having limited visual or mechanical accessibility; Coated surfaces; Complex shapes or poor surface conditions; and, Inspection for defects that require magnification for detection and interpretation.
WIP Standard
2014-04-25
This specification covers one type of fluorescent magnetic particles in the form of a mixed, ready to use suspension in an odorless, inspection oil vehicle and packaged in aerosol cans. This product has been used typically as the inspection medium in a wet, fluorescent magnetic particle inspection system as defined in AMS2640 or ASTM E 1444, but usage is not limited to such applications.
WIP Standard
2014-04-25
This specification covers a stable, noncorrosive, water-soluble, highly-penetrating, fluorescent solution which may, but need not, be diluted with an appropriate amount of water for use. This product has been used typically for use in fluorescent penetrant inspection of parts and assemblies for detection of surface discontinuities and imperfections, particularly on parts, such as those in oxygen systems, which must not be exposed to oils, but usage is not limited to such applications.
Standard
2014-04-24
This SAE Aerospace Recommended Practice (ARP) establishes software capability guidelines for computer controlled test equipment, hereinafter referred to as automatic test equipment (ATE), for testing hydraulic components. A typical ATE system is shown. The items herein have been selected as potential features which may or may not be applicable to a particular application. This document does not address software development requirements, qualification procedures, or hardware design requirements, but encourages users to refer to existing documents for guidance on such issues.
Article
2014-04-23
In a bid to deliver a system that combines quality control with process control, Hexagon introduces its 360° Smart Inline Measurement Solutions for automotive applications.
WIP Standard
2014-04-23
Develop test procedures, requirements, and guidelines for adaptive high beam systems.
Standard
2014-04-22
Scope is unavailable.
Standard
2014-04-22
Scope is unavailable.
Article
2014-04-21
Ashcroft pressure switches offer a selection of features to meet the requirements of most industrial applications.
WIP Standard
2014-04-21
This SAE Recommended Practice was prepared by the Motor Vehicle Brake Fluids Subcommittee of the SAE Hydraulic Brake Systems Actuating Committee to provide engineers, designers, and manufacturers of motor vehicles with a set of minimum performance standards in order to assess the suitability of silicone and other low water tolerant type brake fluids (LWTF) for use in motor vehicle brake systems. These fluids are designed for use in braking systems fitted with rubber cups and seals made from natural rubber (NR), styrene-butadiene rubber (SBR), or a terpolymer of ethylene, propylene, and a diene (EPDM). In the development of the recommended requirements and test procedures contained herein, it is concluded that the LWTFs must be functionally compatible with existing motor vehicle brake fluids conforming to SAE J1703 and with braking systems designed for such fluids. To utilize LWTFs to the fullest advantage, they should not be mixed with other brake fluids. Inadvertent mixtures of LWTFs with fluids meeting SAE J 1703 are not known to have any adverse effects on performance, but all combinations have not been tested.
WIP Standard
2014-04-17
This document examines the most important considerations relative to the use of proximity sensing systems for applications on aircraft landing gear. In general, the recommendations included are applicable to other demanding aircraft sensor installations where the environment is equially severe.
Article
2014-04-16
Champion GSE has developed a dual-purpose stand for its -1B and -2B GEnx engine platforms.
Article
2014-04-16
The M300 data acquisition and datalogging system from Rigol Technologies integrates the company’s 6.5-digit multimeter technology into a versatile system mainframe.
Article
2014-04-16
dSPACE offers a flexible solution for hardware-in-the-loop testing of electric motors, combining Scalexio architecture with a programmable FPGA board and scalable electronic load.
Article
2014-04-16
The latest release of the MapleSim toolbox from Maplesoft expands control design capabilities and supports parameterized controllers for improved flexibility.
Article
2014-04-16
The all-new sports car poses a crucial question: Is it too clever by half? Dr. Andre Ebner, who heads the company’s development of onboard systems, argues very strongly that it is not.
Standard
2014-04-16
This SAE Recommended Practice covers the recommended testing techniques for the determination of electric field immunity of an automotive electronic device when the device and its wiring harness is exposed to a power line electric field. This technique uses a parallel plate field generator and a high voltage, low current voltage source to produce the field.
Article
2014-04-15
With its i3 slated to reach U.S. customer hands in early May, BMW is ramping up production of its first mass-produced all-electric vehicle.
Article
2014-04-14
Customers want quieter cabins, but industry trends are working against the engineers who strive to reduce noise, vibration, and harshness.
Article
2014-04-14
Backed by the world’s fifth-fastest computer, Argonne’s new VERIFI service combines unique test facilities along with focused expertise to help engine developers.
Standard
2014-04-14
These recommendations are provided to aid the international air transport industry by identifying a standard, minimum amount of safety instructions that should be given to sight-impaired passengers. This document is not meant to address problems associated with communicating safety information to sight- impaired passengers who are also hearing impaired or non- conversant in the language(s) used by the cabin crew to disseminate general safety information to passengers. Aircraft operators are encouraged to customize the safety instructions for their own operations in order to ensure that required safety information is provided to sight-impaired passengers.
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