Browse Topic: Performance tests

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Improving the Performance of the Air Conditioning Unit in Different Locations of a City Bus and Lightening the Air Ducts2022-01-504406/03/2022
The focus of this study is to validate vehicle test results of the air conditioning (AC) unit in a city bus and perform a comparative computational fluid dynamics (CFD) analysis on homogenizing the cabin air distribution in different AC unit locations on the rooftop. To validate CFD practical results, a vehicle test was performed outdoor during the AC unit works. Obtained test results based on airflow rate inside AC unit and also measured velocity values on the front cabin of air duct were validated without completely modeling the whole AC unit and indoor cabin via CFD. With this simplified method, it is thought that this approach can give an idea for new prototype air duct designs in relevant industries. Another advantage to this approach is that it avoids high mesh density near the radial fans (blowers) placed on the AC unit. Foam placed in air ducts as insulation and air blockage material is also optimized for air distribution in the indoor cabin. In conclusion, several foams and
Özcan, Onur, Demirtaş, Servet, Yıldız, Alp Eren, Coşkun, Atakan
Technical Paper
Brake Lining Quality Test ProcedureJ661_202110 (Current)10/26/2021
The purpose of this SAE Recommended Practice is to establish a uniform laboratory procedure for securing and reporting the friction and wear characteristics of brake linings. The performance data obtained can be used for in-plant quality control by brake lining manufacturers and for the quality assessment of incoming shipments by the purchasers of brake linings.
Brake Linings Standards Committee
Recommended Practice
Development of Closed Loop Power Recirculating Type Test Rig - Higher Torque Ranges2021-26-049109/22/2021
In the past decades, many impressive progress has been made in the rig development for the gear validation. But, the challenges are to test the entire gear box for the improvement in the single gear alone to ascertain material quality or process improvement, that too with the higher torque range gear boxes, which requires huge investment and power consumption due to high capacity test rig / dynamometer. This paper deals with an experimental validation of the dynamic model for a gear pair test system, representative of a closed loop power recirculating type test rig. Being a closed loop, this system has its own uniqueness, that, it uses the low capacity prime mover, which considers the initial starting loop torque only, to cater the high power requirement in an efficient manner. The key intend of the development of this rig is to reduce the testing from system level to sub component level with low cost operation and more competence for the gears of high torque application. This also
Rajaraman, Manikandan, Srinivasan, Sriraman, Muthu kumar, Pandurangan, N, Gopi Kannan
Technical Paper
Android Automotive testing Solution2021-26-045409/22/2021
In current automotive industry OEMs and suppliers are facing the ever-increased challenge to provide in-vehicle infotainment features that are exciting to their customers. Hence android devices are becoming exceptionally adopted because of its enhanced customer experience with mobility and connectivity, Increased customization, openness and scalability. With android automotive, car makers can create powerful infotainment systems designed for the digital age. This paper deals with the various testing solutions for Android infotainment System. It covers functional and non-functional testing solution and tools for an android RSE (Rear Seat Entertainment) system manually and with automation. Automation includes the use of Generic Test Automation Framework with the help of automated test failure log analyzer and integration of car simulation. In the fast-moving era, there is always a need of faster delivery and feedback with better quality. Hence Continuous Integration and Continuous
K, SONA BABU, Vishwakarma, Rishika
Technical Paper
Performance Test for Windshield Defrosting Systems for Off-Road, Self-Propelled Work MachinesJ1535_202108 (Current)08/02/2021
This SAE Standard establishes uniform test procedures for the defrosting systems of off-road, self-propelled work machines used in construction, general purpose industrial, agricultural, and forestry machinery as referenced in table one of this document. It includes tests that can be conducted with uniform test equipment in commercially available laboratory facilities, as well as in an appropriate outdoor environment.
HFTC6, Operator Accommodation
Technical Standard
Maximum-Allowable-Airspeed Instruments (Turbine Powered Subsonic Aircraft)AS437B-TEST-REC (Historical)12/22/2020
This SAE Aerospace Standard (AS) covers one type of maximum-allowable-airspeed instrument which gives a continuous indication of both indicated airspeed and maximum allowable airspeed not exceeding 650 knots.
A-4 Aircraft Instruments Committee
Technical Standard
Maximum-Allowable-Airspeed Instruments (Turbine Powered Subsonic Aircraft)AS437B (Current)12/22/2020
This SAE Aerospace Standard (AS) covers one type of maximum-allowable-airspeed instrument which gives a continuous indication of both indicated airspeed and maximum allowable airspeed not exceeding 650 knots.
A-4 Aircraft Instruments Committee
Technical Standard
Air Dryer Test ProcedureJ2384_202008 (Current)08/26/2020
This SAE Recommended Practice establishes uniform test procedures for desiccant air dryers used in vehicles with compressed air systems per SAE J2383. Continuous flow desiccant air dryers are excluded from the scope of this document.
Truck and Bus Brake Supply and Control Components Committee
Recommended Practice
Truck and Bus Grade Parking Performance Test ProcedureJ360_202008 (Current)08/19/2020
This SAE Recommended Practice establishes methods to determine grade parking performance with respect to: a. Ability of the parking brake system to lock the braked wheels. b. The vehicle holding or sliding on the grade, fully loaded or unloaded. c. Applied manual effort. d. Unburnished or burnished brake lining friction conditions. e. Down and up grade directions.
Truck and Bus Brake Systems Committee
Technical Standard
Air Data Computer – Minimum Performance StandardAS8002B (Current)04/28/2020
This SAE Aerospace Standard (AS) covers air data computer equipment (hereinafter designated the computer) which when connected to sources of aircraft electrical power, static pressure, total pressure, outside air temperature, and others specified by the manufacturer (singly or in combination) provides some or all of the following computed air data output signals (in analog and/or digital form) which may supply primary and/or standby flight instruments: Pressure Altitude Pressure Altitude, Baro-Corrected Vertical Speed Calibrated Airspeed Mach Number Maximum Allowable Airspeed Over-speed Warning Total Air Temperature
A-4 Air Data Subcommittee
Technical Standard
Air Data Computer – Minimum Performance StandardAS8002B-TEST-REC (Historical)04/28/2020
This SAE Aerospace Standard (AS) covers air data computer equipment (hereinafter designated the computer) which when connected to sources of aircraft electrical power, static pressure, total pressure, outside air temperature, and others specified by the manufacturer (singly or in combination) provides some or all of the following computed air data output signals (in analog and/or digital form) which may supply primary and/or standby flight instruments: Pressure Altitude Pressure Altitude, Baro-Corrected Vertical Speed Calibrated Airspeed Mach Number Maximum Allowable Airspeed Over-speed Warning Total Air Temperature
A-4 Air Data Subcommittee
Technical Standard
Clamp Assembly, Saddle Type, Cushioned, General Specification ForAS85449B-TEST-REC (Historical)04/21/2020
This SAE Aerospace Standard (AS) defines the requirements for saddle-type clamps. Tests and criteria noted do not indicate any specific areas of application or usage. Supplemental testing may be necessary to determine suitability for specific environments and applications.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Technical Standard
Clamp Assembly, Saddle Type, Cushioned, General Specification ForAS85449B (Current)04/21/2020
This SAE Aerospace Standard (AS) defines the requirements for saddle-type clamps. Tests and criteria noted do not indicate any specific areas of application or usage. Supplemental testing may be necessary to determine suitability for specific environments and applications.
G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Technical Standard
Performance Requirements for Determining Tow-Vehicle Gross Combination Weight Rating and Trailer Weight RatingJ2807_202002-TEST-REC (Historical)02/13/2020
This document establishes minimum performance criteria at GCWR and calculation methodology to determine tow-vehicle TWR for passenger cars, multipurpose passenger vehicles, and trucks. This includes all vehicles up to 14000 pounds GVWR.
Tow Vehicle Trailer Rating Committee
Recommended Practice
Performance Requirements for Determining Tow-Vehicle Gross Combination Weight Rating and Trailer Weight RatingJ2807_202002 (Current)02/13/2020
This document establishes minimum performance criteria at GCWR and calculation methodology to determine tow-vehicle TWR for passenger cars, multipurpose passenger vehicles, and trucks. This includes all vehicles up to 14000 pounds GVWR.
Tow Vehicle Trailer Rating Committee
Recommended Practice
Performance Specification for Automotive Electrical Connector SystemsUSCAR2-7 (Current)02/03/2020
Procedures included within this specification are intended to cover performance testing at all phases of development, production, and field analysis of electrical terminals, connectors, and components that constitute the electrical connection systems in low voltage (0 to 20 VDC) road vehicle applications. These procedures are only applicable to terminals used for In-Line, Header, and Device Connector systems. They are not applicable to Edge Board connector systems, twist lock connector systems, >20 VAC or DC, or to eyelet terminals. No electrical connector, terminal, or related component may be represented as having met USCAR/EWCAP specifications unless conformance to all applicable requirements of this specification have been verified and documented. All required verification and documentation must be done by the supplier of the part or parts. If testing is performed by another source, it does not relieve the primary supplier of responsibility for documentation (DVP&R) of all test
USCAR
Specification
Performance Specification for Cable-to-Terminal Electrical CrimpsUSCAR21-4 (Current)01/22/2020
This specification defines test methods and requirements for validation of solderless crimped connections. The purpose of this test is to simulate in the lab the stress seen in a typical life (15 years and 150000 miles) for a crimp connection and assure the crimp is mechanically strong and electrically stable. This specification was developed for use with stranded automotive copper wire. Only where specifically mentioned are other constructions or other core materials (aluminum, clad, steel core, etc.) applicable. This specification does not apply to wire types not mentioned, such as coaxial cable crimps, unless a USCAR-21 test is specifically referenced in the test specification for that wire type. This specification is based on accepted levels of environmental exposure for automotive applications. In any intended vehicle application, if the products covered by this specification are or may be subjected to conditions beyond those described in this document, they must pass special
USCAR
Specification
O-Ring Machined from AMS3617 MaterialAS9772A (Current)01/13/2020
This standard establishes the dimensional and visual quality requirements, lot requirements, and packaging and labeling requirements for O-rings machined from AMS3617 polyamide material. It shall be used for procurement purposes.
A-6C2 Seals Committee
Technical Standard
Performance Specifications for a Midsize Male Pedestrian Research DummyJ2782_201911-TEST-REC (Historical)11/26/2019
While it is recognized that collisions involve pedestrians of all sizes, this Information Report addresses performance specifications for a midsize adult male research dummy. This approach stems from the greater knowledge of biomechanics and existing dummy technologies for the midsize male relative to other adult sizes and children. While not the initial objective, it is envisioned that additional performance specifications for other sizes of pedestrian research dummies will be developed in the future based on accepted scaling procedures. The specific requirements for the pedestrian dummy have been based on a collective assessment of pedestrian injury, response, and anthropometry priorities from the experimental, epidemiologic, and computational literature. In general, the objective was to specify performance specifications based on human characteristics and the impact response of post-mortem human subjects rather than to specify the design of a particular physical device. Based on the
Human Biomechanics and Simulations Standards Committee
Information Report
Performance Specifications for a Midsize Male Pedestrian Research DummyJ2782_201911 (Current)11/26/2019
While it is recognized that collisions involve pedestrians of all sizes, this Information Report addresses performance specifications for a midsize adult male research dummy. This approach stems from the greater knowledge of biomechanics and existing dummy technologies for the midsize male relative to other adult sizes and children. While not the initial objective, it is envisioned that additional performance specifications for other sizes of pedestrian research dummies will be developed in the future based on accepted scaling procedures. The specific requirements for the pedestrian dummy have been based on a collective assessment of pedestrian injury, response, and anthropometry priorities from the experimental, epidemiologic, and computational literature. In general, the objective was to specify performance specifications based on human characteristics and the impact response of post-mortem human subjects rather than to specify the design of a particular physical device. Based on the
Human Biomechanics and Simulations Standards Committee
Information Report
Seat Belt Dynamic Test Performance Sensitivity to Anchorage Location Tolerance of 50 mm2019-28-239811/21/2019
Seat Belt Assemblies used in a vehicle are tested and certified as per ECE R16/ IS 15140 for its performance during dynamic test. During validation test, seat belt anchorages are set-up as per design condition. The tolerance provided in the regulation for each anchorage is 50mm. Also there is difference in actual anchorage location in a vehicle and design location. This tolerance and variation can affect the performance of seat belt during the test or actual car accident. This study shows the variation of seat belt performance when different combination of anchorage locations is used within 50 mm.
Gupta, Akshat
Technical Paper
Requirements for Accreditation of Testing Laboratories for Organic CoatingsAS5505A (Current)10/28/2019
This document provides interpretation of ISO/IEC 17025 and establishes additional requirements for accreditation of testing laboratories for evaluating organic coatings.
AMS G8 Aerospace Organic Coatings Committee
Technical Standard
Brake Rating Power Requirements - Truck and BusJ257_201907 (Current)07/18/2019
The minimum performance values in this SAE Recommended Practice are applicable to vehicles with brake systems having typical service pressure ranges 0 to 16.6 MPa (0 to 2400 psi) hydraulic or 0 to 945 kPa (0 to 135 psi) air only. SAE J880 not only provides for determining maximum brake rating power capability, but also permits verification of any desired or arbitrary level such as the requirement established herein. The determining criteria for deciding brake rating power capability are: a. Cold brake stopping ability. b. Fade as a result of brake power absorption. c. Hot brake stopping ability following brake power absorption. d. Brake system stability following brake power absorption. e. Functional and structural integrity of brake system following test.
Truck and Bus Brake Systems Committee
Technical Standard
New Performance Metrics for Lidar19AVEP05_0705/01/2019
Frame-rate measurement is so yesterday. Object-revisit rate and instantaneous resolution are more relevant metrics, and indicative of what a lidar system can and should do, argues a revolutionary in the artificial-perception space. How do you measure the effectiveness of an intelligent, lidar-based perception system for autonomous vehicles? Conventional evaluation metrics favor frame rate and resolution as the ideal criteria. However, experts at Pleasanton, Calif.-based artificial perception company AEye believe that these criteria are inadequate for measuring the unique capabilities of more advanced lidar systems, nor do they explicitly address real-world problems facing autonomous driving, such as hazard detection and tracking. “Makers of automotive lidar systems are frequently asked about their frame rate, and whether or not their technology has the ability to detect objects with 10% reflectivity at a specified range, frame rate and resolution,” said the company's co-founder and
Vijayan, Indu
Magazine Article
Evaluation of After-Market Light Emitting Diode Headlight Bulbs2019-01-085004/02/2019
Taking advantage of growing consumer interest in light emitting diode (LED) headlights, an increasing number of after-market LED replacement bulbs is available on the market. They are designed to have similar socket shapes and sizes as halogen bulbs, in order to fit into existing headlight housings. Although none of these LED replacement bulbs conform to present federal headlighting regulations, and some are labeled for "off road use" only, others claim to meet current regulations. Regardless, many different LED bulbs can be easily purchased and installed by vehicle owners, who may or may not be aware of their regulatory status. Several different LED replacement bulb kits, each designed to replace a conventional 55-W H11 halogen bulb, were purchased and tested in three different low-beam headlight units. Photometric measurements at several critical test points for headlight performance revealed that none of the resulting distributions met all of the test point photometric requirements
Liu, Yi-wei, Bullough, John
Technical Paper
Investigating Cardiac Device Performance with Computer Modeling and SimulationTBMG-3371802/01/2019
Why do some people develop malfunction of their mitral valve (MV) after a heart attack? The answers are complex, and treatments are not yet perfected. But biomedical engineers are hot on the trail of better solutions thanks to advancements in computer modeling and simulation.
Magazine Article
A Study on the Repeatability of Vehicle Ride Performance Measurements2019-26-007601/09/2019
Across the automotive industries, objective measurements and subjective assessment of vehicle ride performance are routinely carried out during development as well as validation phase. Objective measurements are receiving increased attention as they are generally believed to offer a higher degree of objectivity and repeatability compared to the subjective assessment alone. Typical industry practices include the acquisition of vehicle-occupant vibrational response on specified road sections, test surfaces on proving grounds or in a controlled input environment such as four-poster test rig. In presented work, a study is performed on the repeatability of vehicle ride performance metrics such as weighted RMS acceleration and frequency responses using the data acquired in repeated trials conducted using three different sports utility vehicles (SUVs) on a sufficiently long designated road section. Intra-vehicle and inter-vehicle ride performances are compared and studied against the
Joshi, Divyanshu, Kedia, Shubham, Muthiah, Saravanan
Technical Paper
Design and Performance Specifications for a Generic Buck Representing a Small Family Car Used in the Assessment of Pedestrian Dummy Whole Body Impact ResponseJ3093_201901 (Current)01/08/2019
This Information Report addresses the design and performance specifications for a generic buck to be used in full-scale vehicle to pedestrian tests conducted to evaluate pedestrian dummy performance. Specifically, the buck is designed to mimic the impact response of the front end of a sedan within the small family car class during a collision with a pedestrian. The goal is to develop a generic buck with simplified geometry and a limited number of components made of clearly defined and readily available engineering materials to facilitate fabrication and reproducibility. To ensure performance of the buck, it is specified that the buck mimics the maximum crush distance, absorbed energy, and maximum force corresponding to a sedan within the small family car class during a pedestrian impact. The design and performance specifications provided in this document focus on: (1) the design specifications describing the materials and geometry of the generic buck and (2) the specific certification
Human Biomechanics and Simulations Standards Committee
Information Report
A Video-Based System for Measuring the Braking Performance of a Bicycle2018-01-503208/27/2018
The following article describes a methodology for using a video-based system to measure the deceleration or braking performance of a bicycle after the rider applies the brakes. The bicycle’s deceleration was calculated from the equation of motion using the initial velocity and the braking distance, which is the difference between the point of brake initiation (POBI) and the bicycle’s point of rest (POR). The POBI was determined by using a GoPro camera mounted on the chain stay near the rear axle that captured a brake light wired into the rear brakes while the test cyclist rode alongside of a 100-foot surveyor tape. The POR or more specifically where the rear wheel stopped was documented next to the 100-foot surveyor tape. This methodology was evaluated under two braking conditions: rear brake only (RBO) and front and rear brake (FARB). The results demonstrated that the video-based system provided reasonably accurate measurements, on the order of 5% for assessing the braking performance
Joganich, Timothy
Technical Paper
Strain-Life Fatigue Data File FormatJ2409_201808 (Current)08/24/2018
SAE format for a SIMPLE Strain-Life Fatigue Data Exchange File Format. The object of this SAE Standard is to provide a simple common way to exchange strain-life fatigue data collected from ASTM E 606 axial fatigue test data.
Materials, Processes and Parts Council
Technical Standard
Guidelines for Testing and Support of Aerospace, Fiber Optic, Inter-Connect SystemsARP5061A (Current)08/16/2018
ARP5061A provides guidelines for optical performance testing of short haul fiber optic inter-connection systems used in aerospace vehicles. The focus of this document is to introduce the proper testing tools and establish common pre- and post-installation test methods and troubleshooting methodologies.
AS-3 Fiber Optics and Applied Photonics Committee
Recommended Practice
FIBER OPTIC FERRULE MECHANICAL TRANSFERARINC846 (Current)08/06/2018
This specification covers the dimensions, performance, and quality assurance criteria for fiber optic MT contacts, including performance test requirements and procedures, suitable for use on commercial aircraft.
Airlines Electronic Engineering Committee
Specification
Passenger Car Tire Performance Requirements and Test ProceduresJ918_201806 (Current)06/29/2018
This SAE Standard provides minimum performance requirements and accompanying uniform laboratory test procedures for evaluating certain essential characteristics of new tires and newly retreaded tires intended for use on passenger cars. (The requirements published in this SAE Standard pertain to tire sizes currently used on American passenger cars and popular sizes used on imported passenger cars. For related information on tire sizes not listed, contact SAE Automotive Headquarters, 18121 East Eight Mile Road, East Detroit, Michigan 48021.)
Highway Tire Committee
Technical Standard
Performance Requirements for Motor Vehicle HeadlampsJ1383_201805 (Current)05/16/2018
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 performance requirements for headlamps.
Road Illumination Devices Standards Committee
Recommended Practice
An Integrated Test Facility for Suspension Dampers of Commercial Vehicle2018-01-138304/03/2018
In the present scenario, delivering the right product at the right time is very crucial in automotive sector to grab the competitive advantage. In the development stage, validation process devours most of the product development time. This paper focuses on reducing the validation time for damper (shock absorber) variants which is a vital component in commercial vehicle suspension system. New test facility is designed for both performance test and endurance testing of six samples simultaneously. In addition, it provides force trend monitoring during the validation which increases the efficiency of test with an enhanced control system. This new facility is also designed to provide side loading capability for individual dampers in addition to the conventional axial loading. The key parameter during validation is control of damper seal temperature within the range of 70-90°C. A cooling circuit is designed to provide an efficient temperature control by re-circulating cold water. The water
N, Obuli Karthikeyan, Bakthavachalam, Sathish Kumar, V, Srinivasa Chandra, C, Karthikeyan
Technical Paper
Splices, Fiber Optics, For Aerospace Inter-Connection SystemsMA5405B (Current)03/18/2018
This specification covers design and performance requirements of fiber optic splices for optical distribution systems in aerospace vehicles and provides a means of procurement of such devices.
AS-3 Fiber Optics and Applied Photonics Committee
Technical Standard
Performance Specification for Automotive Wire Harness Retainer ClipsUSCAR44 (Historical)05/10/2017
This specification describes a method and acceptance criteria for testing automotive wire harness retainer clips. Retainer clips are plastic parts that hold a wire harness or electrical connector in a specific position. Typical plastic retainers work by having a set of "branches" that can be inserted into a hole sized to be easy to install but provide acceptable retention. This specification tests retainer clips for mechanical retention when exposed to the mechanical and environmental stresses typically found in automotive applications over a 15-year service life. This specification has several test options to allow the test to match to the expected service conditions. The variability of applications typically arises a) from different ambient temperatures near the clip, different proximity to automotive fluids, different exposure to standing water or water spray and different thicknesses of the holes that the clip is inserted into. Clips are typically inserted into sheet or rolled
USCAR
Specification
Modeling and Simulation of Compression Molding Process for Sheet Molding Compound (SMC) of Chopped Carbon Fiber Composites2017-01-022803/28/2017
Compression molded SMC composed of chopped carbon fiber and resin polymer which balances the mechanical performance and manufacturing cost presents a promising solution for vehicle lightweight strategy. However, the performance of the SMC molded parts highly depends on the compression molding process and local microstructure, which greatly increases the cost for the part level performance testing and elongates the design cycle. ICME (Integrated Computational Material Engineering) approaches are thus necessary tools to reduce the number of experiments required during part design and speed up the deployment of the SMC materials. As the fundamental stage of the ICME workflow, commercial software packages for SMC compression molding exist yet remain not fully validated especially for chopped fiber systems. In the present study, SMC plaques are prepared through compression molding process. The corresponding simulation models are built in Autodesk Moldflow with the same part geometry and
Li, Yang, Xu, Hongyi, Dahl, Jeffrey, Zeng, Danielle, Su, Xuming, Mirdamadi, Mansour, Chen, Zhangxing
Journal Article
Simulating the Mobility of Wheeled Ground Vehicles with Mercury2017-01-027303/28/2017
Mercury is a high-fidelity, physics-based object-oriented software for conducting simulations of vehicle performance evaluations for requirements and engineering metrics. Integrating cutting-edge, massively parallel modeling techniques for soft, cohesive and dry granular soil that will integrate state-of-the-art soil simulation with high-fidelity multi-body dynamics and powertrain modeling to provide a comprehensive mobility simulator for ground vehicles. The Mercury implements the Chrono::Vehicle dynamics library for vehicle dynamics, which provides multi-body dynamic simulation of wheeled and tracked vehicles. The powertrain is modeled using the Powertrain Analysis Computational Environment (PACE), a behavior-based powertrain analysis based on the U.S. Department of Energy’s Autonomie software. Vehicle -terrain interaction (VTI) is simulated with the Ground Contact Element (GCE), which provides forces to the Chrono-vehicle solver. The driver model implements an array of tests for
Goodin, Chris, Priddy, Jody, Lynch, Larry, Mange, Jeremy, Pace, Sara, Skorupa, Thomas, Kedziorek, Daniel
Journal Article
Calculation and Measurement of the Time to Complete In-Vehicle Navigation and Route Guidance TasksJ2365_201607-TEST-REC (Historical)07/12/2016
This Recommended Practice can apply to both Original Equipment Manufacturer and Aftermarket route-guidance and navigation system functions for passenger vehicles. The methods apply only to the presentation of visual information and the use of manual control inputs to accomplish a navigation or route guidance task. They do not apply to visual monitoring tasks which do not require a manual control input, such as route following. Voice-activated controls or passenger operation of controls are also excluded.
Driver Metrics, Performance, Behaviors and States Committee
Recommended Practice
Calculation and Measurement of the Time to Complete In-Vehicle Navigation and Route Guidance TasksJ2365_201607 (Current)07/12/2016
This Recommended Practice can apply to both Original Equipment Manufacturer and Aftermarket route-guidance and navigation system functions for passenger vehicles. The methods apply only to the presentation of visual information and the use of manual control inputs to accomplish a navigation or route guidance task. They do not apply to visual monitoring tasks which do not require a manual control input, such as route following. Voice-activated controls or passenger operation of controls are also excluded.
Driver Metrics, Performance, Behaviors and States Committee
Recommended Practice
Reliability Evaluation of Thin, Lightweight Laminates for Windshield Applications2016-01-140104/05/2016
The use of lightweight materials to produce automotive glazing is being pursued by vehicle manufacturers in an effort to improve fuel economy. As glazing’s become thinner, reduced rigidity means that the critical flaw size needed to create fracture becomes much smaller due to increased strain under load or impact. This paper documents experiments focused on the impact performance of several alternative thin laminate constructions under consideration for windshield applications (including conventional annealed soda-lime glass as well as laminates utilizing chemically strengthened glass), for the purpose of identifying new and unique failure modes that result from thickness reduction. Regulatory impact tests and experiments that focused on functional performance of laminates were conducted. Given the increased sensitivity to flaw size for thin laminates, controlled surface damage was introduced to parts prior to conducting the functional performance tests. Damage levels were selected
Walawender, Chester S., Cleary, Thomas M., Huten, Timothy, Strong, Daniel
Journal Article
Storage BatteriesJ537_201604 (Historical)04/05/2016
This SAE Standard serves as a guide for testing procedures of automotive 12 V storage batteries.
Starter Battery Standards Committee
Technical Standard
Storage BatteriesJ537_201604-TEST-REC (Historical)04/05/2016
This SAE Standard serves as a guide for testing procedures of automotive 12 V storage batteries.
Starter Battery Standards Committee
Technical Standard
Bayesian Sleep FusionTBMG-2387602/01/2016
To ensure mission success, astronauts must maintain a high level of performance, even when work-rest schedules result in chronic sleep restriction and circadian misalignment, both of which can contribute to fatigue and performance deficits unless effective countermeasures are used. The overarching goal of this project is to build an Individualized Fatigue Meter to provide astronauts and mission support personnel with immediate feedback about their alertness or fatigue levels. The Individualized Fatigue Meter incorporates sleep history, ambient light levels, schedule information, and performance tests to provide immediate individualized feedback about alertness, and allow critical insight when making decisions about scheduling future sleep periods and selecting fatigue countermeasures.
Magazine Article
Optimization of Engine Variables for Low Emissions of a 6 Cylinder Heavy Duty Diesel Engine2016-28-012102/01/2016
There are significant geometrical as well as operational parameters which affect the emission performance of a diesel engine. In this work, various important engine variables are selected for optimization. The objective of this work is to satisfy BS III norms, that too, with a healthy margin. Among the selected variables, swirl is a complex variable to control, and that itself depends on number of geometrical and operational parameters. Chamfer angle of the valve seat is modified to vary swirl ratios, actual swirl performance test is done. Further, CFD and analytical analysis is done on various geometrical parameters of intake port and important parameters affecting swirl were identified. Thus, by the above exercise three optimum swirl ratios were selected for design of experiments. Engine variables selected for optimization are swirl ratio, fuel injection timing, nozzle orifice (K and KS type) and turbocharger (waste gate and free float). L9 Orthogonal array was formed consisting of 9
Jain, Praveer, Kulkarni, Vinayak, Kulkarni, Sachin, Mahajan, Ravindra
Technical Paper
Motorcycle Side Stand Retraction Performance RequirementsJ1579_201410 (Current)10/24/2014
These requirements define minimum recommended levels of side stand retraction performance of a new side stand/motorcycle combination when tested according to the procedures of SAE J1578.
Motorcycle Technical Steering Committee
Recommended Practice
Influence of Test Procedure on Friction Behavior and its Repeatability in Dynamometer Brake Performance Testing2014-01-252109/28/2014
The efforts of the ISO “Test Variability Task Force” have been aimed at improving the understanding and at reducing brake dynamometer test variability during performance testing. In addition, dynamometer test results have been compared and correlated to vehicle testing. Even though there is already a vast amount of anecdotal evidence confirming the fact that different procedures generate different friction coefficients on the same brake corner, the availability of supporting data to the industry has been elusive up to this point. To overcome this issue, this paper focuses on assessing friction levels, friction coefficient sensitivity, and repeatability under ECE, GB, ISO, JASO, and SAE laboratory friction evaluation tests. With multiple companies (or programs) developing and assessing the friction coefficient and friction behavior under different methods, it is inevitable to avoid conflicts of performance requirements or lack of reproducibility or correlation of test results under
Grochowicz, Jaroslaw, Agudelo, Carlos, Li, Shanglei, Abendroth, Harald, Wollenweber, Karl-Heinz, Reich, Achim
Journal Article
Integrated Approach for Accelerated Fatigue Testing of Resonating Structures2014-01-082104/01/2014
The durability evaluation of overhanging components of a vehicle (Ex: horn, radiator) is a challenge to durability engineers as resonance plays an important role in determining their fatigue life. As resonance cannot be avoided always, it is desirable to develop methods to evaluate life of the component in the presence of resonance. Though the existing vibration test standards suggest test profiles to evaluate resonance failures, there are cases in which, these methods do not yield the proving ground results. This may lead to unnecessary overdesign or unrealistic failures. In such cases it is suggested to generate a sweep endurance test procedure customized to the proving ground or actual roads. This paper studies a methodology for generating a sweep endurance test procedure for evaluation of resonating components. Responses like stress and accelerations were measured in test components in proving ground. Contribution of each frequency band towards overall damage is determined. An
KV, Sunil, Sheepri, Sunil, Kandula, Kiran, Kumar, Amit
Technical Paper
AVIONICS APPLICATION SOFTWARE STANDARD INTERFACE, PART 3A, CONFORMITY TEST SPECIFICATION FOR ARINC 653 REQUIRED SERVICESARINC653P3A (Current)01/13/2014
The scope of this Compliance Test Specification is to define test procedures to demonstrate compliance of the API behavior only. This does not include performance tests (e.g., benchmark tests), nor demonstration of capability of the operating systems to manage combinations of configuration parameters.
Airlines Electronic Engineering Committee
Technical Standard
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