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Viewing 1 to 30 of 23906
2018-06-07
Training / Education
The requirements for producing an FAA approved replacement part can be daunting. Understanding the steps required in the FAA Parts Manufacturer Approval (PMA) process can greatly streamline the approval life-cycle and reduce unnecessary costs and delays, thereby shortening the time and cost to market. This course is designed for those organizations and individuals interested in designing and manufacturing replacement parts for civil aviation aircraft. This two-day course covers the crucial subjects and steps of the FAA-PMA approval process.
2018-05-22
Training / Education
Providing you have a basic understanding of geometric dimensioning and tolerancing fundamentals, this course teaches an introduction to functional gaging design and how to verify part dimensional requirements using functional gages and other measurement methods. Utilizing the expertise of world-renowned GD&T expert Alex Krulikowski, this course offers an explanation of metrology, the roles of the metrologist and inspector, measurement uncertainty, inspection tools, functional gages, inspection planning and reporting, and simulating datums. Newly acquired learning is reinforced throughout the class with numerous practice problems.
2018-05-01
Training / Education
The avionics hardware industry world-wide is now commonly required to follow DO-254 Design Assurance Guidance for Airborne Electronic Hardware for literally all phases of development: Safety, Requirements, Design, Logic Implementation, V&V, Quality Assurance, etc. The DO-254 standard is a companion to the software DO-178B standard; however, there are many differences between hardware and software which must be understood. This basic course introduces the intent of the DO-254 standard for commercial avionics hardware development.
2018-04-25
Training / Education
Certifying an aircraft, part or appliance can be challenging while navigating the maze of Federal Aviation Administration (FAA) procedures, rules, policies and guidelines. This course will help you to the understand the FAA organizational structure, it’s policies, guidelines and requirements leading to Type and Supplemental Type airworthiness approvals, and provide you with a competitive edge and potential reduction in time in obtaining an FAA approval.
2018-04-16
Training / Education
This course provides an introduction to basic tire mechanics, including materials, sidewall stampings, pressure, tread patterns, tire inspection and basic tire failure identification of passenger and light truck tires. Practical in nature and supplemented with samples and hands-on activities, the course will provide you with information that you can use immediately on-the-job and apply to your own vehicle. It serves as a good primer for the in-depth SAE Tire Forensic Analysis course. This course has been approved by the Accreditation Commission for Traffic Accident Reconstruction (ACTAR) for 7 Continuing Education Units (CEUs).
2018-03-19
Training / Education
This interactive seminar will take you beyond the basics of passenger car and light truck vehicle dynamics by applying advanced theory, physical tests and CAE to the assessment of ride, braking, steering and handling performance. Governing state-space equations with transfer functions for primary ride and open loop handling will be developed & analyzed. Building on the analysis of the state space equations, common physical tests and their corresponding CAE solutions for steady state and transient vehicle events will be presented. The "state-of-the-art" of vehicle dynamics CAE will be discussed.
2018-03-12
Training / Education
The task of certifying an aircraft or part can be overwhelming given the lengthy process and the many steps that are required. Understanding the process can greatly enhance the outcome and reduce unnecessary delays or frustrations. This course will provide an overview of the Federal Aviation Administration (FAA) organizational structure, its policies, guidelines and requirements leading to Type and Supplemental Type airworthiness approvals. It will also cover the rule-making process and rules applicable to aircraft parts and products.
2018-03-07
Training / Education
Engineers and managers involved with product development are constantly challenged to reduce time to market, minimize warranty costs, and increase product quality. With less and less time for testing, the need for effective accelerated test procedures has never been greater. This course covers the benefits, limitations, processes, and applications of several proven accelerated test methods including accelerated reliability, step stress, FSLT (Full System Life Test), FMVT® (Failure Mode Verification Testing), HALT (Highly Accelerated Life Testing), and HASS (Highly Accelerated Stress Screening).
2018-03-06
Training / Education
The skills and knowledge gained in this workshop will enable students to carry out regulatory responsibilities related to the administration of the Aircraft Certification and Continued Operational Safety. This course content provides the Civil Aviation Safety Engineers (Systems – Electrical) with the knowledge and skills to conduct oversight of aviation safety, aircraft certification and Continued Operational Safety.
2018-03-05
Training / Education
Individuals responsible for quality management system, implementation, and transition to the AS9100:2016 series of standards for Aviation, Space, and Defense will require an understanding of the requirements for the preparation and execution of the audit process as defined in these revised standards. Management and implementers of AS9100:2016 Rev. D within these organizations must also be aware of what these changes may mean for their company.
2018-02-12
Training / Education
Part 21 is the FAA regulation that provides the regulatory framework to conduct certification of products and parts. This includes the engineering, airworthiness, production and quality systems. The aerospace industry is hinged around compliance with Part 21; however, comprehension of Part 21 and its role in civil certification is challenging. This course is designed to provide participants with an understanding of the processes that encompass aircraft certification, including compliance with FARs, certification procedures and post certification responsibilities.
2018-02-08
Training / Education
ARP4761 describes guidelines and methods for performing safety assessments. This recommended practice is associated with showing compliance with certification requirements (14CFR/CS Parts 23 and 25, section 1309) and assisting a company in meeting their own internal safety standards. The safety processes described are primarily associated with civil airborne equipment but the processes and tools may be applied to many applications.
2018-02-05
Training / Education
ARP4754A substantially revises the industry guidance for the development of aircraft and aircraft systems while taking into account the overall aircraft operating environment and functions. This development process includes validation of requirements and verification of the design implementation for certification and product assurance. ARP4754A provides the practices for showing compliance with regulations and serves to assist companies in developing and meeting its own internal standards though application of the described guidelines.
2010-10-05
Technical Paper
2010-01-2040
Mathew Heinecke, Jeremy Beedy, Kevin Horrigan, Raja Sengupta
The importance of fuel economy and emission standards has increased rapidly with high fuel costs and new environmental regulations. This requires analysis techniques capable of designing the next generation long-haul truck to improve both fuel efficiency and cooling. In particular, it is important to have a predictive design tool to assess how exterior design changes impact aerodynamic performance. This study evaluates the use of a Lattice Boltzmann based numerical simulation and the National Research Council (NRC) Canada's wind tunnel to assess aerodynamic drag on a production Volvo VNL tractor-trailer combination. Comparisons are made between the wind tunnel and simulation to understand the influence of wind tunnel conditions on truck aerodynamic performance. The production VNL testing includes a full range of yaw angles to demonstrate the influence of cross wind on aerodynamic drag.
2011-04-12
Technical Paper
2011-01-0457
Yixin Chen, Jeffrey Pfeiffer, Ken Simpson
This paper first presents a basic mean value engine plant model implemented in a hardware-in-the-loop (HIL) system. The plant model includes some basic engine parameters such as engine speed, manifold absolute pressure, etc., which are critical to both control algorithm integrity and default actions that result from improper signal performance (e.g., ECU shuts down due to corrupted signal(s)). The model is then improved to develop the HIL bench-based testing capabilities in the areas where a vehicle has traditionally been required. The on-board diagnostic monitor tests covered by SID $06 of SAE J1979 are selected as a case study. Specifically, for OBD exhaust gas sensor monitor testing purposes, the oxygen sensor model is developed to simulate normal or abnormal binary switching signals which might have asymmetric “lean to rich” and “rich to lean” transitions, or largely off maximum/minimum sensor voltages, etc.
2011-04-12
Technical Paper
2011-01-0454
Matt Rings, Paul Phillips
The increase in the number of electronic control units (ECUs) in the modern vehicle, combined with increased software complexity and more distributed controls has led to an extreme testing challenge when it comes to the verification and validation of body-control ECUs. In general test engineers have to deal with more software configurations, more closed-loop interaction between ECUs, and more fault conditions than ever before. By adding Unified Diagnostic Services (UDS) over CAN to a Hardware-In-The-Loop (HIL) test system, Lear was able to increase test automation and provide wider test coverage by automating the ECU flashing process, adding diagnostic identifiers and trouble codes to their test scripts, and providing a quick and easy way to exercise ECU I/O. Lear chose to implement their HIL testers on the open PXI[1] hardware platform, utilizing National Instruments' VeriStand software framework.
2011-04-12
Technical Paper
2011-01-0451
Florian Schmidt
Advanced Driver Assistance Systems (ADAS) in modern cars contain actively reacting functionality, like autonomous steering or braking assistants. The demand for functional Hardware-in-the-Loop (HiL) testing of these systems contains the need to create realistic models of the car's surrounding. Generating high-resolution photorealistic 3D-graphics in real-time proved to be critical, but with modern graphics technology, “Visual Loop” test-systems can be built. Integrated into test processes and with automated test case generation, these testing tools can improve the performance and quality of functional verification and validation significantly.
2011-04-12
Technical Paper
2011-01-0472
Oliver Scholz, Rolf Behrendt, Thomas Wenzel, Thomas Stocker, Jörg Müller
The inspection of steel welds is a requirement in many safety critical applications, with X-rays offering an excellent visual aid in quality monitoring of such parts. In order to penetrate the steel and the weld, high energy X-rays are usually required though, depending on the material's thickness and the length of material the X-ray beams must traverse. The high beam energies can seriously degrade the X-ray detectors' life expectancy and image quality, so in order to ensure consistent image quality traditional X-ray film has been used, in spite of its drawbacks regarding the ecological impact of the chemical process and the significant efforts involved if archives of the welds must be maintained. This paper presents an alternative solution to the traditional photochemical archival approach using a custom X-ray detector developed specifically for the inspection of welded seams.
2010-10-10
Technical Paper
2010-01-1697
Jaroslaw Grochowicz, Karl-Heinz Wollenweber, Carlos Agudelo, Harald Abendroth
Modern project management including brake testing includes the exchange of reliable results from different sources and different locations. The ISO TC22/SWG2-Brake Lining Committee established a task force led by Ford Motor Co. to determine and analyze root causes for variability during dynamometer brake performance testing. The overall goal was to provide guidelines on how to reduce variability and how to improve correlation between dynamometer and vehicle test results. This collaborative accuracy study used the ISO 26867 Friction behavior assessment for automotive brake systems. Future efforts of the ISO task force will address NVH and vehicle-level tests. This paper corresponds to the first two phases of the project regarding performance brake dynamometer testing and presents results, findings and conclusions regarding repeatability (within-lab) and reproducibility (between-labs) from different laboratories and different brake dynamometers.
2010-10-10
Technical Paper
2010-01-1701
Donald E. Yuhas, Earl Gesch, Takeshi Yamane, Carol Vorres, Jacek Remiasz
In this study several non-destructive test methods have been applied to as-manufactured automotive brake pads. The primary emphasis of our study is the formulation and development of ultrasonic methods where four independent velocity modes are measured on each pad. For two of the measurements, the ultrasound is propagated in-the-plane of the pad, while in two other measurements the ultrasound is propagated through-the-thickness (out-of-plane). Over 300 pads from five different manufacturers have been tested. In many cases, the ultrasonic data is compared with other testing methods including conventional compressibility tests, modal analysis, and hardness testing. In some cases, measurements have been made of several different batches of materials to test long term consistency of the material properties in the production environment. In other studies the production process has been deliberately altered to help establish specific cause and effect relationships.
2010-10-10
Technical Paper
2010-01-1700
Christopher Thomas Griffen
Meeting specific bonded insulator attachment specifications depend on the type of bonding polymer selected as well as application conditions. These conditions include initial apply parameters (time, temperature and pressure), backing plate surface characteristics (surface material, flatness, finish) and strength properties that avoid cohesive, adhesive or mixed mode failures during operating life of the braking pad assembly. “T-pull” and “Lap Sheaf testing provide an overall quantitative method to determine tensile and shear load/deflection properties. They do not assess the three dimensional dynamic stress state of the bond during braking conditions which involve the influence of temperature, apply pressure, rotational inertial forces and cyclic frequency/strain rate effect. The operational factors which change the state of bond have an effect on damping performance and ability to control overall system noise.
2010-10-10
Technical Paper
2010-01-1699
Richard W. Bono, Gail Stultz
Resonant Inspection is a non-destructive test technique that measures the structural dynamic signature of an article. By comparing the resulting footprint to expected signatures, anomalous outliers are sorted due to some inherent structural defect, improving quality and consistency of manufactured components. Brake components, such as rotors and drums, are designed with specific structural dynamic properties for desired NVH qualities. Resonant Inspection via the Resonant Acoustic Method (RAM-NDT) provides a proven economical technique with the capacity for accurate, reliable and high-throughput 100% online inspection.
2010-10-10
Technical Paper
2010-01-1698
Andreas Bender, Karl Haesler, Claus Thomas, Jaroslaw Grochowicz
Brake system development and testing is spread over vehicle manufacturers, system and component suppliers. Test equipment from different sources, even resulting from different technology generations, different data analysis and report tools - comprising different and sometimes undocumented algorithms - lead to a difficult exchange and analysis of test results and, at the same time, contributes to unwanted test variability. Other studies regarding the test variability brought up that only a unified and unambiguous data format will allow a meaningful and comparative evaluation of these data and only standardization will reveal the actual reasons of test variability. The text at hand illustrates that a substantial part of test variability is caused by a misinterpretation of data and/or by the application of different algorithms.
2011-04-12
Technical Paper
2011-01-0231
YoungJae Jung, Yeongwoo Yoo
In recent years, many automotive companies have been striving to reduce costs and shorten new vehicle development cycle time. To develop a new vehicle costs a tremendous amount especially at the prototype phase. So currently vehicle simulation on the powertrain bench is an attractive alternative at the development phase to reduce the quantity of proto vehicles. This test method moves the test site from the road to the bench without the need for real chassis parts. This paper deals with the method and strategy for moving testing from road to bench, specifically emission and fuel economy test for vehicles equipped with manual transmission. To execute vehicle type tests on the bench requires correlation and simulation of many parameters - for example gear shifting, throttle position, clutch travel and related driver characteristics, temperature and driving road load resistance, etc.
2011-04-12
Journal Article
2011-01-0227
Sebastian Kunkel, Martin Werner, Georg Wachtmeister
This SAE Technical Paper gives a summary of the essential findings in the development and operation of a test engine dedicated to the measuring of the friction between the piston group and the liner. Firstly the fundamental demands on the high-precision and close to real engine operation friction measuring are laid out. Subsequently the basic engine, the measuring system based on the floating liner method including a gas balance device, as well as the implemented measuring technique are specified. Major influencing variables on the friction of the piston assembly and its interference variables are also summarized. Extensive information about the systematic and strategies for the test engine's operation startup are given in acknowledgement of influencing and interference variables. This strategy reduces the developmental and startup process of an engine dedicated to the measuring of piston group friction.
2011-04-12
Technical Paper
2011-01-0225
Sam Scime
For decades, the industry standard for laboratory durability simulations has been based on reproducing quantified vehicle responses. That is, build a running vehicle, measure its responses over a variety of durability road surfaces and reproduce those responses in the laboratory for durability evaluation. To bring a vehicle to market quickly, the time between tightening the last bolt on a prototype test vehicle and starting the durability evaluation test must be minimized. A method to derive 4-Post simulator displacements without measuring or predicting vehicle responses is presented.
2011-04-12
Technical Paper
2011-01-0198
Masahiro Fujimoto, Atsushi Fujii, Nobuyuki Matsumiya
Since wear resistance and fatigue strength are key requirements for chassis components, induction hardening is widely used to apply compressive stress for controlling crack growth. Therefore, it is crucial that the influence of defects is examined with compressive residual stress applied to parts. In this report, the relationship between crack depth and compressive residual stress is evaluated using a cylindrical specimen and a torsional fatigue test. The test results were found to be consistent with CAE simulations performed in advance. In the future, it will be necessary to make this method applicable to product design to further improve vehicle safety performance.
2011-04-12
Technical Paper
2011-01-0144
Kim R. Hansen, Jakob D. Dolriis, Christoffer Hansson, Claus S. Nielsen, Spencer C. Sorenson, Jesper Schramm
The paper describes the optimization of a 50 cc crankcase scavenged two-stroke diesel engine operating on dimethyl ether (DME). The optimization is primarily done with respect to engine efficiency. The underlying idea behind the work is that the low weight, low internal friction and low engine-out NOx of such an engine could make it ideal for future vehicles operating on second-generation biofuels. Data is presented for the performance and emissions at the current state of development of the engine. Brake efficiencies above 30% were obtained despite the small size of the engine. In addition, efficiencies near the maximum were found over a wide operating range of speeds and loads. Maximum bmep is 500 kPa. Results are shown for engine speeds ranging from 2000 to 5000 rpm and loads from idle to full load. At all speeds and loads NOx emissions are below 200 ppm and smokeless operation is achieved. Design improvements relative to an earlier prototype are described.
2011-04-12
Technical Paper
2011-01-0158
Stephane Cyr, Kang-Duck Ih, Sang-Hyun Park
Aerodynamic simulation results are most of the time compared to wind tunnel results. It is too often simplistically believed that it suffice to take the CAD geometry of a car, prepare and run a CFD simulation to obtain results that should be comparable. With the industry requesting accuracies of a few drag counts when comparing CFD to wind tunnel results, a careful analysis of the element susceptible of creating a difference in the results is in order. In this project a detailed 1:4 scale model of the Hyundai Genesis was tested in the model wind tunnel of the FKFS. Five different underbody panel configurations of the car were tested going from a fully paneled car to a car without panels. The impact of the moving versus static ground was also tested, providing over all ten different experimental results for this car model.
2011-04-12
Technical Paper
2011-01-0161
Tsuneaki Ishima, Yasushi Takahashi, Haruki Okado, Yasukazu Baba, Tomio Obokata
In CFD (Computational Fluid Dynamics) verification of vehicle aerodynamics, detailed velocity measurements are required. The conventional 2D-PIV (Two Dimensional Particle Image Velocimetry) needs at least twice the number of operations to measure the three components of velocity ( u,v,w ), thus it is difficult to set up precise measurement positions. Furthermore, there are some areas where measurements are rendered impossible due to the relative position of the object and the optical system. That is why the acquisition of detailed velocity data around a vehicle has not yet been attained. In this study, a detailed velocity measurement was conducted using a 3D-PIV measurement system. The measurement target was a quarter scale SAE standard vehicle model. The wind tunnel system which was also designed for a quarter scale car model was utilized. It consisted of a moving belt and a boundary suction system.
Viewing 1 to 30 of 23906

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