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Technical Paper
2014-09-30
Xinyu Ge, Jonathan Jackson
Cost reduction in automotive industry becomes a widely-adopted operational strategy not only for Original Equipment Manufacturers (OEMs) that take cost leader generic corporation strategy, but also for many OMEs that take differentiation generic corporation strategy. Since differentiation generic strategy requires an organization to provide a product or service above the industry average level, a premium is typically included in the tag price for those products or services. Cost reduction measures could increase risks for the organizations that pursue differentiation strategy. Although manufacturers in automotive industry dramatically improved production efficiency in past ten years, they are still facing up with the pressure of cost control. The big challenge in the cost control for automakers and suppliers is increasing prices of raw materials, energy and labor costs. These costs construct constrains for the traditional economic expansion model. Lean manufacturing and other traditional Six Sigma processes have been widely utilized to reduce waste and improve efficiency further in the automotive industry.
Technical Paper
2014-09-30
Gregory J. Burek, Thomas Neyhart
PURPOSE The purpose of this paper is to introduce the concept of Knowledge Aware Engineering (KAE), and explain how it is already providing competitive advantage in the design and manufacturing of complex products. ABSTRACT Engineering intensive industries, such as aerospace, automotive and commercial vehicle, are facing increasing global competition. At the same time, their products are becoming more complex, incorporating advancing technologies while facing increasing regulations and requirements. During design, many of these are in conflict with each other, requiring a method for balancing these conflicts to increase the optimization of the design. Engineers must look at the entire system and align increased System Engineering requirements such as quality, reliability, safety, flexibility, interoperability, manufacturability, to name a few. For many of these disciplines, a designer or engineer is neither trained nor understands the integration issues. In response, companies have spent significant time, money, and effort to identify and capture best practices, lessons learned, design rules and other technical knowledge to improve first time quality and reduce total operating cost.
Technical Paper
2014-09-30
Marc Auger, Larry Plourde, Melissa Trumbore, Terry Manuel
Design of body structures for commercial vehicles differs significantly from automotive due to government, design, usage requirements. Specifically the design of heavy truck doors differ as they are not required to meet side impact requirements due to their height off the ground as compared to automobiles. However, heavy truck doors are subjected to higher loads, longer life and less damage from events. Past aluminum designs relied either on bent extrusions around the periphery of the door or multiple steel and/or aluminum reinforcements joined to the inner in order to provide the necessary structure. Doors using aluminum extrusions for the peripheries were limited to two dimensional bending for the extrusions resulting in a planar door with limited styling features an opportunity for aerodynamic improvements. Doors with stamped reinforcements and door mounted mirrors require joining the inner and outer structure at the lower mirror mount forcing the use of a division bar to split the glass that impedes vision and drives cost for the extra parts.
Technical Paper
2014-09-30
Zhigang Wei, Limin Luo, Shengbin Lin
This paper reviews the correlation concepts and tools available, with the emphasis on their historical origins, mathematical properties and applications. Two of the most commonly used statistical correlation indicators, i.e., modal assurance criterion (MAC ) for structural deformation pattern identification/correlation and the coefficient of determination (R^2 ) for data correlation are investigated. The mathematical structure of R^2 is critically examined, and the physical meanings and their implications are discussed. Based on the insights gained from these analyses, a data scatter measure and a dependency measure are proposed. The applications of the measures for both linear and nonlinear data are also discussed. Finally, several worked examples in vehicle dynamics analysis and statistical data analyses are provided to demonstrate the effectiveness of these concepts.
Technical Paper
2014-09-30
Sanket Pawar
Many time off-road vehicles need to perform variety of jobs. That means vehicles may need to handle variety of attachments for various reasons like type & scale of job to be performed, different terrain & geographical condition, load on machine etc. With different attachments, components used in the attachments may also change based on job demand i.e. accuracy & resolution required, operator preferences, environmental & cost factor etc. To make automotive system compatible with range of attachments having variety of components demand high degree of customization in the system. To cope up with these demands, system architects either have to create different system architecture for different attachments/implements or they have to make the system architecture highly modular. Prior method of creating different system architecture further increasing the cost of development and testing. As every architecture has to go through entire product development life-cycle, this increases time to market further adding to cost.
Technical Paper
2014-09-30
Venkatesan C, DeepaLakshmi R
The automotive industry is constantly looking for new alternate material and cost is one of the major driving factors for selecting the right material. ABT is a safety critical part and care to be taken while selecting the appropriate material. Polyamide 12(PA12) is the commonly available material which is currently used for ABT applications. Availability and cost factor is always a major concern for commercial vehicle industries. This paper presents the development of an alternative material which has superior heat resistance. Thermoplastic copolyester (TEEE) materials were tried in place Polyamide 12 for many good reasons. The newly developed material has better elastic memory and improved resistance to battery acid, paints and solvents. It doesn’t require plasticizer for extrusion process because of which it has got excellent long term flexibility and superior kink resistance over a period of time. Also it has got better heat ageing properties and higher burst pressure at elevated temperature.
Technical Paper
2014-09-30
Mehmet Bakir, Murat Siktas, Serter Atamer
In today's world, there are a prominent number of weight & cost reduction projects within the vehicle engineering development activities. Regarding this phenomenon, a complete optimization study is applied to a 4-leaf pendulum leaf spring used in heavy duty trucks by reducing the number of leaves down to 3 together with weight and cost reductions. Leaf spring itself plays a crucial role in a heavy duty truck structure. Because of this purpose, the new designs should withstand all forces like the current design assuring same strength and fatigue characteristics. In other words, it should be lower in price and weight but at the same time strong enough to maintain its durability throughout its life time. This fact brings great responsibility to the development process of the new optimized leaf springs. Hence, a complete optimization process is applied from scratch till the very end which is illustrated in this paper. At the first step of the project, the stiffness of the leaf spring is calculated with an in-house software based on mathematical calculations using the thickness profile of the leaves.
Technical Paper
2014-09-30
Sijing Guo, Zhenfu Chen, Xuexun Guo, Quan Zhou, Jie Zhang
Hydraulic electromagnetic shock absorber (HESA) consists of hydraulic cylinder and check valves etc., by which the high-pressure oil produced by shock absorber reciprocation could be exported to drive the hydraulic motor, so as to drive the generator, and eventually recover the mechanical vibration energy otherwise dissipated by the traditional shock absorber as heat energy. Hydraulic Interconnected Suspension(HIS) can improve the vehicle roll and pitch stablity performance by interconnecting the chambers of the shock absorbers on the vehicle. To integrate both the advantages of HESA and HIS, a new type of suspension system is proposed in this paper, namely Hydraulic Interconnected Suspension system based on Hydraulic Electromagnetic Shock Absorber (HESA-HIS). HESA-HIS has three operating modes: energy-recovery priority mode, driving stability performance priority mode and energy-recovery and driving stability performance balance mode. The working principle of HESA-HIS in the three operating modes is introduced, and the mathematic theory model is deduced with relative automobile theory knowledge.
Technical Paper
2014-09-30
Oscar Flores-Centeno, Manuel Fabela-Gallegos, David Vazquez-Vega, Carlos Blake-Cervantes, Ricardo Hernandez-Jimenez
The vehicle’s dynamic behavior is influenced mainly by the interaction of four factors: driver, vehicle, road an environment. Under given circumstances, perturbation of these factors can cause degradation of vehicles´ performance; as a result, an accident will take place affecting the vehicle itself, road infrastructure and injury or even death of passenger(s). In order to increase road safety is essential to fully understand the interaction of those factors on vehicle’s dynamic behavior, especially heavy vehicles due to its greater mass, dimensions and potential damage that can cause. This paper presents the effect of road condition on the dynamic behavior of a 3-axle straight-truck based on numerical simulations. Validated commercial software was used. Three different road conditions were studied, namely potholes, longitudinal level differences between adjacent lanes due to repairing process, and different surface friction coefficients also due to road repairing process. For numerical simulations, three standardized maneuvers were taken into account, namely, single and double lane change and panic braking.
Technical Paper
2014-09-16
Louis Columbus
Aerospace suppliers face the daunting task of constantly improving time-to-market, reducing cost of quality and turning compliance into a competitive advantage. Managing to these constraints while staying profitable is a challenge faced by the entire aerospace supply chain face today. The intent of this presentation is to share five lessons learned on how aerospace suppliers can optimize for these three constraints while growing their businesses. The first is electronically enabling traceability both within a multi-tier supply chains and throughout suppliers. Automating traceability at the shop floor improves quality management and accelerates compliance. Specific methodologies and metrics used to accomplish this will be provided. Second, lessons learned from implementing Manufacturing Execution Systems (MES) showing how shop floor visibility has a direct effect on supplier performance is illustrated with case studies and metrics. Third, lessons learned in making compliance pay by benchmarking performance to AS9100C, ISO9001, and ITAR standards is provided.
Standard
2014-07-21
The supplier shall use the following process to respond to a customer request for corrective and preventive action.
WIP Standard
2014-07-18
This specification covers quality assurance sampling and testing procedures used to determine conformance to applicable specification requirements of carbon and low-alloy steel forgings.
Article
2014-07-16
Ram’s official move to adopt the SAE J2807 towing standard for validating all three (1500, 2500, and 3500) of its pickup weight classes raises the competitive bar for the industry's other pickup players. Meanwhile, Ford has engineered its latest F-450 with half the GCVW capability of a Class-8 tractor-trailer.
Article
2014-07-15
Opel recently broke ground on a €210 million expansion of its Rüsselsheim International Technical Development center (ITDC) that will be used to develop and test engines. The 36,000-m² (400,000-ft²) expansion will be completed in 2017.
Article
2014-07-15
Northrop Grumman Corp. broke ground on a new $20 million Maryland Space Assembly and Test (M-SAT) facility on its Baltimore campus adjacent to Baltimore Washington International Thurgood Marshall Airport.
Article
2014-07-15
VPT Inc. has added a comprehensive radiation laboratory and test services facility to its Chelmsford, MA, facility. The 5000-ft² VPT Rad facility, which will serve the radiation and related test needs of aerospace electronics manufacturers, provides specialized environments and equipment for evaluating electronics used in applications where ionizing radiation can degrade device performance.
Article
2014-07-07
Recently, with increased vehicle safety requirements, vehicle manufacturers are installing cutting-edge testing equipment in their own crash test facilities.Chrysler Group LLC partnered with Messring Systembau GmbH to upgrade Chelsea Proving Grounds, the central testing facility in Chelsea, MI.
Article
2014-06-30
Camber Corp. signed an agreement with Texas A&M–Corpus Christi (TAMUCC) to be the lead systems and business integrator for the Lone Star Unmanned Aircraft Systems Center (LSUASC) Test Site. The LSUASC is one of six unmanned aircraft systems (UAS) test sites identified by the FAA.
WIP Standard
2014-06-26
This recommended practice describes the application of digital cameras to measurement of photometric quantities in the photometric laboratory.
Article
2014-06-20
Omega’s PR-21 series of RTD (resistance temperature detector) sensors with M12 connector feature a welded 316L stainless steel housing and an integral 4-pin M12 connector for easy connection.
Standard
2014-06-16
This SAE Recommended Practice describes the basic content requirements, bar-code specifications, and functional test specifications of a vehicle emission configuration (VEC) label. On the vehicle, the VEC label is to be mounted under the hood in a readily accessible location for use of a bar-code scanning device. This document specifies a permanent vehicle emission configuration label that can be automatically identified through a bar-coded format.
Standard
2014-06-13
The requirements established in this document are applicable to the IAQG and associated sectors for managing oversight to established requirements contained in 9104-series standards (i.e., 9104/1, 9104/2, 9104/3). The requirements are applicable to IAQG working groups for oversight.
Article
2014-06-12
The cause of the issue was an error in the process Ford engineers used to correlate wind-tunnel testing into their Total Road Load Horsepower (TRLHP) factor that is key to the vehicle fuel economy models that are ultimately submitted to the U.S. EPA.
Article
2014-06-11
Reaction Design worked with a German premium automotive company to build cylinder-combustion simulations for a high-performance diesel engine with the goal of accurately and quickly predicting combustion performance and the effects of varied operating conditions on soot emissions.
Standard
2014-06-05
This SAE Recommended Practice establishes the minimum interface compatibility requirements for electric vehicle (EV) inductively coupled charging for North America. This part of the specification is applicable to manually connected inductive charging for Levels 1 and 2 power transfer. Requirements for Level 3 compatibility are contained in Appendix B. Recommended software interface messaging requirements are contained in Appendix A. This type of inductively coupled charging is generally intended for transferring power at frequencies significantly higher than power line frequencies. This part of the specification is not applicable to inductive coupling schemes that employ automatic connection methods or that are intended for transferring power at power line frequencies. in the charge coupler). The charge controller signals the charger to stop charging when it determines that the batteries are completely charged or a fault is detected during the charging process. The following steps correspond with the diagram in Figure 1, and describe the closed-loop charging system.
Standard
2014-06-05
This specification covers quality assurance sampling and testing procedures used to determine conformance to applicable specification requirements of carbon and low-alloy steel forgings.
Article
2014-06-03
The LC411-USBH series high-speed USB load cells from Omega connect directly to your computer and offer up to 1000 readings per second.
Article
2014-05-31
Hexagon Metrology’s Leica T-Scan 5 handheld system for laser trackers is said to operate more than 15 times faster than the previous model.
Article
2014-05-30
PCB Piezotronics’ surface microphone for R&D testing features a low-profile design ideal for testing in confined spaces and windy environments.
Article
2014-05-30
Supercritical Fluid Technologies’ SFT-250 supercritical fluid extractor is designed to perform extractions in supercritical fluid and meets the rigors of the research lab.
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