Display:

Results

Viewing 241 to 270 of 22515
WIP Standard
2014-04-04
AS81511/18 will allow the conversion of the MIL-C-81511/18 to an AS specification.
WIP Standard
2014-04-04
AS81511/14 will allow the conversion of the MIL-C-81511/14 to an AS specification.
WIP Standard
2014-04-04
AS81511/16 will allow the conversion of the MIL-C-81511/16 to an AS specification.
WIP Standard
2014-04-04
AS81511/15 will allow the conversion of the MIL-C-81511/15 to an AS specification.
WIP Standard
2014-04-04
AS81511/17 will allow the conversion of the MIL-C-81511/17 to an AS specification.
WIP Standard
2014-04-04
AS81511/13 will allow the conversion of the MIL-C-81511/13 to an AS specification.
WIP Standard
2014-04-04
AS81511/26 will allow the conversion of the MIL-C-81511/26 to an AS specification.
Standard
2014-04-03
This method is designed to evaluate the coking propensity of synthetic ester-based aviation lubricants under two phase air-oil mist conditions as found in certain parts of a gas turbine engine, for instance, bearing chamber vent lines. Based on the results from round robin data in 2008-2009 from four laboratories, this method is currently intended to provide a comparison between lubricants as a research tool; it is not currently a satisfactory pass/fail test. At this juncture a reference oil may improve reproducibility (precision between laboratories); a formal precision statement will be given when there is satisfactory data and an agreed on, suitable reference oil if applicable.
Standard
2014-04-03
This specification provides dimensional standards for crimp type contact wire barrel design and is a replacement for MS3190. Some wire barrel designs may exist in AS39029 but are not considered approved for future use, therefore, will not appear in this specification. The crimp barrel sizes listed in this document have been standardized in AS39029 and AS22520 specifications, tools and contacts are available to support these listed sizes. These crimp barrel requirements shall be used for any contact, regardless of whether it is a standard or non-standard contact configuration. The specification lists details for three types of wire barrels: A, B, and C. Wire barrel type A is not recommended for new design. Table 4 lists each AS39029 detail sheet wire barrel type.
WIP Standard
2014-04-02
The Measurement of Coolant Hose task group conducted a round-robin study to determine the measuring capability of automotive suppliers and users to measure Inside Diameter (ID), Outside Diameter (OD), Wall Thickness (Wall) and wall thickness variation of hose using traditional measuring devices and techniques. Seven companies (five suppliers and two end users) participated in this testing. Based upon the round-robin study this information report will detail procedures, test measuring devices, results and recommendations.
WIP Standard
2014-04-02
The Hose Measurement Task Force conducted a round-robin study to determine the measuring capability of automotive suppliers and users to simultaneously measure the Inside Diameter (ID), Outside Diameter (OD), Wall Thickness (Wall), and Wall thickness Variation (WV) of hose using a laser-based, non-contact LOTIS QC-20 gauging device. Three (3) companies (all end users) participated in this testing with one of the three companies performing the GR&R calculations presented herein. Based upon the round-robin study this report will detail procedures, test measuring devices, results, and conclusions.
WIP Standard
2014-04-02
This specification provides a standard set of procedures for sampling and testing to meet the requirements of material specifications for wrought titanium and titanium alloy products except forgings and forging stock. It is applicable to the extent specified in a material specification.
Technical Paper
2014-04-01
Ram Kiran Tholeti, Shyamsundar Kumbhar, Nainish Kumar B, R Govindarajan
Abstract Scooter segment growth is tremendously increasing in India. The increased competition challenges automotive manufacturers to deliver the high quality and high reliable product to the market. Higher reliability involves increased durability testing which involves time and cost. Stress testing a part of durability is initially conducted on prototype vehicles for structural design validation and then later on production units to ensure its structural integrity. The obtained data from the tests can be used for future structural design improvements. Scooters with small tires, suspension limitations transfers more loads to structure, challenges engineers to design robust structure without compromising on weight much. It is necessary to look at Real World Usage Pattern (RWUP) and to create a stress life cycle block for simulation of accelerated testing, thereby optimizing the testing time and the development costs. The aim of this paper is to provide a procedure for deriving an accelerated stress test cycle for evaluation of chassis based on Road Load Data Acquisition (RLDA).
Technical Paper
2014-04-01
Valerie Earlene Bumbaca
Abstract Virtually every major automaker has announced intentions of producing an electric vehicle (EV). Hyundai Motor Group has also announced plans to sell an electric vehicle in the next several years. There is strong and increasing support for electric vehicles in the USA due to an interest in protecting the environment, limiting dependence on oil, and reducing the associated cost of petroleum-based transportation. From a durability perspective, battery performance and longevity are significant concerns. In order to better prepare for upcoming electric vehicles, Hyundai-Kia America Technical Center, Inc (HATCI) Vehicle Evaluation group is developing an EV durability test and battery lifecycle laboratory test based on real world EV customer usage. Since there is limited availability of real world customer information for electric vehicles, a program has been started to collect EV customer usage data. This will be correlated with test inputs for both road and lab testing. An outside vendor has been contracted to collect data on customer usage from existing Nissan Leaf and Chevrolet Volt customers.
Technical Paper
2014-04-01
Derek R. Braden, David M. Harvey
Abstract There is a continual growth of test and validation in high reliability product applications such as automotive, military and avionics. Principally this is driven by the increased use and complexity of electronic systems deployed in vehicles, in addition to end user reliability expectations. Higher reliability expectations consequently driving increased test durations. Furthermore product development cycles continue to reduce, resulting in less available time to perform accelerated life tests. The challenge for automotive electronic suppliers is performing life tests in a shorter period of time whilst reducing the overall associated costs of validation testing. In this paper, the application of prognostic and health monitoring techniques are examined and a novel approach to the validation and testing of automotive electronics proposed which it is suggested may be more cost effective and efficient than traditional testing. The holistic method explored in this paper fuses real time test data obtained during the monitoring of products throughout an environmental exposure with key factors from manufacturing and product design.
Technical Paper
2014-04-01
Sunil Kumar Chippa, Bhavani Srinivasaiah, Samraj Jabez Dhinagar
Abstract Automated testing of manufactured products reduces the lead time to considerable extent in the process of production to delivery. Products like automobiles demand automated testing, for which robots and vision systems are widely employed. The basic functionality of a vision system in automation is to detect an object and then recognize it. In current automotive industry such systems are being used for robotic guidance, component tracking, dimensional gauging etc. There is a need to test the proper functionality of a speedometer fitted on a motorbike in the production line itself. Focused work on detection and recognition of Analog type and Digital type speedometer console reading of a motorbike is described in this paper. A vision based system is proposed which recognizes the speedometer reading instantaneously at the desired time. Image binarization, connected component analysis combined with character recognition algorithms are used to achieve the desired recognition, which resulted in reduced lead time hence contributing to lean manufacturing
Technical Paper
2014-04-01
Andrew Hall, John McPhee
Abstract Physical rig testing of a vehicle is often undertaken to obtain experimental data that can be used to ensure a mathematical model is an accurate representation of the vehicle under study. Kinematics and Compliance (K&C) testing is often used for this purpose. The relationship between the hard point locations and compliance parameters, and K&C characteristics of a suspension system is complex, and so automating the process to correlate the model to the test data can make the exercise easier, faster and more accurate than hand tuning the model. In this work, such a process is developed. First, the model parameters are adjusted, next a simulation is run, before the results are read and post processed. This automation processed is used in conjunction with an optimization procedure to carry out the K&C correlation. MATLAB scripts are created to modify the model parameters, run simulations and read the results so that MATLAB optimization algorithms can be used to identify the most appropriate suspension parameter values.
Technical Paper
2014-04-01
Xiaobo Yang
Abstract An outrigger is the device that is mounted on a test vehicle to protect it and/or its driver during handling test maneuvers, such as double lane change, constant radius cornering, J-turn, etc. The design of the outrigger is challenged by the constraints associated with its size, installation flexibility, strength, weight, and moment of inertia for a minimum or negligible impact on the test vehicle dynamics. To achieve an appropriate design of an outrigger for a specific vehicle, it is essential to determine the appropriate dynamic loads that the outrigger needs to support after its geometry and installation scheme have been determined. In this study, a flexible representation of an outrigger is mounted on a military vehicle that is simulated on a NATO double lane change maneuver at the given forward speeds. With the closed-loop driver/vehicle system simulation scheme, various drivers' choices of previewed paths are potentially applied by the ones with different levels of driving experiences and skills, which may further affect the vehicle dynamics and the outrigger contact forces.
Technical Paper
2014-04-01
Ping Zhong, Kang Zhang, Xu Chen, Yunlong Shi, Lianxiang Yang
Abstract The assembling accuracy of two contactors during the relay switch production is an important factor affecting the quality of relay. An embedded machine vision quality Inspection system has been developed for electric relay production line inspection. The proposed system can provide online feedback on the quality of the relays by measuring the distance of the gap between the contacts of them. Two CMOS imaging sensors are operated for image acquisition and the parallel working mode is realized under dual-channel mode. A red light illumination system has been adopted to eliminate the imaging noise from the reflection of the surfaces of copper sheet. Before the test, the features areas in the image of same type relay is selected as template and saved in the computer. During the inspection procedure, a rotation invariance detection scheme based on circular projection matching algorithm has been used for fast recognizing and locating detected object with the help of these feature areas.
Technical Paper
2014-04-01
Shulian Zhang, Weiping Wang
Abstract This paper reports the extraordinary properties and industry applications of Nd: YAG Microchip Laser Feedback Interferometer, Nd: YAG LFI. The Michelson interferometer has been invented for more than a century and is widely used in science and industry today. The Nd: YAG LFI, which is based on laser feedback effect instead of ordinary interferometry, has the different structure from Michelson interferometer, and then extraordinary properties. Therefore the Nd: YAG LFI can be used as a traditional laser interferometer with nano-meter resolution and a few meters measurement range. At the same time Nd: YAG LFI can also measure the displacement of light, thin, black, transparent (water, alcohol, glass surface) objects, even liquid evaporation rate. Some actual applications are described in this paper, including the displacement measurement with nano-meter resolution for black machine parts, measurement of evaporation rate of liquids, measurement of the hysteretic curves of PZT and displacement measurement of cylinder surface.
Technical Paper
2014-04-01
Li Yanhua, Jianping Lin
Abstract Similar laser welded blanks with same material and same gauge have been extensive applied in automobile body for improving the material utilization and extending maximum coil size. It is known that, for TWBs with dissimilar material and thicknesses, the difference of material properties and/or thickness of the welded blanks, change of the material properties in the weld seam and heat-affected zones (HAZ) as well as location and orientation of the weld seam are reasons for reduced formability. However, the plastic deformation capacity of TWBs is reduced even when the material and thickness are the same. The aim of this paper is to evaluate the deformation behaviors of similar laser welded joints. Uniaxial tensile of five laser welded joints, with 90°,60°,45°,30°and 0°weld orientations, were tested by using optical measurement-DIC (Digital Image Correlation). Strain /strain ratio distribution and evolution of each joint was analyzed and compared with base material. In addition, mechanical property of weld was determined using rule of mixture and hardness testing.
Technical Paper
2014-04-01
Songgang Li, Guobiao Yand, Weiming Zeng
Abstract The port structure consisting of spur pile, vertical pile and beam is subjected to impact loads, so its internal stress state of each point will rapidly change over time. Dynamic photoelastic method is used to study the dynamic stress and stress wave propagation. With epoxy resin and other materials, a photoelastic model of beam to column connection structure is processed and product. The dynamic response of the model under the impact load by the free fall is researched by the dynamic photoelastic method, and recorded by the new digital dynamic photoelastic system with a laser source and high-speed photography system. The internal dynamic stress propagation and distribution, the maximum shear stress and the dynamic stress concentration problems can be obtained by analyzing the dynamic response. Researching on the key part under impact load using dynamic photoelastic method can furnish the experimental evidence of transient stress phenomenon for theoretical research and engineering applications.
Technical Paper
2014-04-01
Hang Yin, Weiming Zeng, Guobiao Yang, Songgang Li
Abstract When an object was subjected an impact loading, stress wave was produced in the object. Studying the regularity of stress-wave propagation was significant to the study of objects subjected to impact loading. When stress wave travelled in the object, principal stress on free boundary was useful to theoretical analysis and calculation. In this article, a new kind of dynamic photoelastic apparatus was used. Isochromatic and isoclinic of the object subjected to impact loading could be obtained combining dynamic photoelastic experiment and related test equipment. By analyzing the isoclinic, there would be a conclusion that the angle between the isoclinic and the free boundary was not 0°or 90°. So the values of the two principal stress on the boundary were all not 0. The result obtained from the electrometric method came to the same conclusion. Analysis showed the result of dynamic photoelastic method was compatible with the result of electrometric method. So the method in this article was feasible and accurate.
Technical Paper
2014-04-01
Guobiao Yang, Jingyu Wang, Qirong Zhu, Ruhua Fang, Lianxiang Yang
Abstract With the rapid development of computing technology, high-speed photography system and image processing recently, in order to meet growing dynamic mechanical engineering problems demand, a brief description of advances in recent research which solved some key problems of dynamic photo-elastic method will be given, including:(1) New digital dynamic photo-elastic instrument was developed. Multi-spark discharge light source was replaced by laser light source which was a high intensity light source continuous and real-time. Multiple cameras shooting system was replaced by high-speed photography system. The whole system device was controlled by software. The image optimization collection was realized and a strong guarantee was provided for digital image processing. (2)The static and dynamic photo-elastic materials were explored. The new formula and process of the dynamic photo-elastic model materials will be introduced. The silicon rubber mold was used without the release agent. The epoxy resin sheet or block was solidified at room temperature and could be poured accurately once.
Viewing 241 to 270 of 22515

Filter

  • Book
    43
  • Collection
    5
  • Magazine
    432
  • Technical Paper
    15236
  • Standard
    6799
  • Article
    0
  • Article
    0