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Technical Paper

Bridging the Design Gap: Next-Level Automation in Automotive Design with the IncQuery AUTOSAR-UML Bridge

2024-04-09
2024-01-2050
The IncQuery AUTOSAR-UML Bridge is an innovative solution for Assisted Documentation Creation and Automated Handover, aiming at driving a paradigm shift in integrated digital engineering in the automotive domain. The AUTOSAR-UML Bridge is addressing a well-known gap in the engineering ecosystem of automotive design, where the co-design of AUTOSAR models and other model-based artifacts is often hampered by tedious workflows involving manual syncing of model contents between AUTOSAR and UML/SysML tools. The Bridge is aiming at streamlining the workflow by generating high-quality UML models from AUTOSAR projects, with built-in ISO26262 and ASPICE compliance. Automotive software architects and systems engineers spend a lot of time with creating ISO26262-compliant documentation, by creating UML models from AUTOSAR architecture designs, or establishing traceability between requirements captured in SysML and design artefacts that exist in both modeling languages.
Technical Paper

Vehicle Accelerations during Common Maneuvers: Speed Bumps, Dips, and Parking Blocks

2024-04-09
2024-01-2480
Typical everyday driving scenarios involve acceleration ranges which are relevant to accident reconstruction. Understanding the motions and accelerations endured in common driving maneuvers can help quantify the accelerations of vehicles and occupants when reconstructing a collision. This paper evaluates various everyday driving conditions, such as traversing speed bumps and dips, and impacting parking blocks. The purpose of this paper is to quantify the accelerations experienced during everyday driving scenarios to provide a reference for impact severity analysis in the field of accident reconstruction.
Technical Paper

Accuracy of Rectifying Oblique Images to Planar and Non-Planar Surfaces

2024-04-09
2024-01-2481
Emergency personnel and first responders have the opportunity to document crash scenes while evidence is still recent. The growth of the drone market and the efficiency of documentation with drones has led to an increasing prevalence of aerial photography for incident sites. These photographs are generally of high resolution and contain valuable information including roadway evidence such as tire marks, gouge marks, debris fields, and vehicle rest positions. Being able to accurately map the captured evidence visible in the photographs is a key process in creating a scaled crash-scene diagram. Image rectification serves as a quick and straightforward method for producing a scaled diagram. This study evaluates the precision of the photo rectification process under diverse roadway geometry conditions and varying camera incidence angles.
Standard

Standard Sheet Steel Thickness and Tolerances

2024-03-04
CURRENT
J1058_202403
This SAE Recommended Practice provides an orderly series for designating the thickness of unocated and coated hot-rolled and cold-rolled sheet and strip. This document also provides methods for specifying thickness tolerances.
Technical Paper

Damage Tolerant Fracture Assessment of Crack for Non-Standard Geometries under Static and Fatigue Loading

2024-01-16
2024-26-0276
Cracks on metallic components may appear due to manufacturing, handling, installation, repair, welding etc. and are controlled by quality documents. However, if cracks violate the limit defined in quality document, then either parts will be scraped or will need additional evaluation through detailed fracture mechanic’s approach. The initial size and shape of a crack, part geometry and loading, highly impacts the behavior of a crack’s growth and remaining useful life. Industry standard software like ANSYS, AFGROW, Franc3D, etc. offer the solution to estimate the stress intensity factor and crack growth rate. However, these software’s have their limitation and start showing the deviation for complex geometry and loading scenario.
Technical Paper

Effect of Environmental Factors on the Function of an Automotive Luggage Cover of a Passenger Vehicle – A Case Study

2024-01-16
2024-26-0228
The Indian passenger vehicle market has grown by more than 40% by volume in the last decade and has reached a record high in FY23. This has created a more diverse and demanding customer base that values interior design and quality. The modern customer expects a high level of aesthetics and sophistication in their vehicle interiors - including in the luggage area. The Luggage Cover (Parcel Tray) is a component in the luggage area of a passenger vehicle that is used to conceal the luggage & improve its aesthetics. The cover is generally made of thermoplastic material with rotating hinges and is held in its place by the compression from the back door, which is frequently opened and closed. The parts that connect the cover to the door (usually an elastomer interface on the thermoplastic tray) tend to change over a period due to climatic conditions and leads to rattling concerns over a period.
Technical Paper

A New Holistic Approach for System-Level Development of Seat Features

2024-01-16
2024-26-0381
System engineering-based approach is now ubiquitous in the automotive industry. It is a disciplined approach that ensures that targets are clearly defined and met through a structured and holistic approach. In this paper, we report an application of a systems engineering-based methodology for developing seating system features. It starts with a Business Requirement Document (BRD), which enlists the business requirements of a feature. We then developed a Logical Architecture Diagram (LAD) on a Simulink environment, which is an initial proposal for designing the logic to realize the desired functionality. As a next step, we perform Functional Failure Analysis (FFA) on the LAD to identify potential failure modes. We propose a few ways to mitigate the identified failures or modify the design so that these failures are rendered inconsequential to the end user.
Technical Paper

Rethinking V2X: Embracing User-First Development for Industry Advancement

2023-12-29
2023-01-1907
American roadway safety is facing significant challenges. With traffic and pedestrian fatalities approaching record levels, a paradigm shift from Proof of Technology (PoT) to Proof of Value (PoV) will promote the Vehicle-to-Everything (V2X) industry advancement. While a PoT-driven ecosystem has spurred the advancement of the V2X space, this paper underscores the value of a PoV mindset where solutions are focused on the user instead of being technologically driven. Users do not think in terms of minimum viable products (MVP). Instead, they anticipate useful, usable, and lovable products. Putting customers in sharp focus and planning products and services around their needs will pave the way for their widespread adoption and acceptance of V2X technology. This paper concludes with a call to make technology subservient to human needs rather than the other way around.
Standard

Fuel Filter - Initial Single-Pass Efficiency Test Method

2023-12-13
CURRENT
J1985_202312
This SAE Standard is intended for all sizes of fuel filters, so a variety of test stands may be required depending upon flow rate. The low contamination level, downstream clean-up filter, and short duration of the test ensure that the particle retention ability of the filter is measured in a single pass, as no appreciable loading or regression will occur.
Standard

Nomenclature - Clam Bunk Skidder

2023-12-07
CURRENT
J1353_202312
This SAE Recommended Practice identifies major components and parts peculiar to clam bunk skidders. Illustrations used here are not intended to include all existing machines or to be exactly descriptive of any particular machine. They have been provided to illustrate the principles to be used in applying this document.
Technical Paper

Integration of Automatic Speed Reducers and Motion Stabilizers for Improved Turn Ability in Two-Wheelers

2023-11-10
2023-28-0120
The operation of two-wheelers, or bikes, presents risks due to factors such as excessive speed, severe acceleration, and over-tilting, which may compromise the stability of the vehicle. This study proposes a solution to enhance ride safety and turn ability by integrating automatic speed reducers and a motion stabilizer, modelled using CATIA and designed from PVC material. The stabilizer is situated between the fork arms, holding a magnet, which initiates automatic braking when the magnet approaches the rim during a turn. We conducted three modes of testing, including no load and no angle, under magnetic load at zero angles, and under magnetic load at various angles in both lateral directions. Frequency data corresponding to the calculated speed was recorded using a spectrum analyzer, and we performed counterbalancing weight calculations to ensure stability. The results revealed a reduction in speed due to magnetic action.
Standard

Cast Shot and Grit Size Specifications for Cleaning and Peening

2023-06-27
CURRENT
J444_202306
This SAE Recommended Practice pertains to blast cleaning and shot peening and provides for standard cast shot and grit size numbers. For shot, this number corresponds with the opening of the nominal test sieve, in ten thousandths of inches1, preceded by an S. For grit, this number corresponds with the sieve designation of the nominal test sieve with the prefix G added. These sieves are in accordance with ASTM E11. The accompanying shot and grit classifications and size designations were formulated by representatives of shot and grit suppliers, equipment manufacturers, and automotive users.
Standard

Potential Standard Steels

2023-06-06
CURRENT
J1081_202306
This SAE Information Report provides a uniform means of designating wrought steels during a period of usage prior to the time they meet the requirements for SAE standard steel designation. The numbers consist of the prefix PS1 followed by a sequential number starting with 1. A number once assigned is never assigned to any other composition. A PS number may be obtained for steel composition by submitting a written request to SAE Staff, indicating the chemical composition and other pertinent characteristics of the material. If the request is approved according to established procedures, SAE Staff will assign a PS number to the grade. This number will remain in effect until the grade meets the requirements for an SAE standard steel or the grade is discontinued according to established procedures. Table 1 is a listing of the chemical composition limits of potential standard steels which were considered active on the date of the last survey prior to the date of this report.
Standard

Broadband PLC Communication for Plug-in Electric Vehicles

2023-05-24
CURRENT
J2931/4_202305
This SAE Technical Information Report SAE J2931/4 establishes the specifications for physical and data-link layer communications using broadband Power Line Communications (PLC) between the plug-In electric vehicle (PEV) and the electric vehicle supply equipment (EVSE) DC off-board-charger. This document deals with the specific modifications or selection of optional features in HomePlug Green PHY v1.1 (HomePlug GP1.1) necessary to support the automotive charging application over Control Pilot lines as described in SAE J1772™. PLC may also be used to connect directly to the Utility smart meter or home area network (HAN), and may technically be applied to the AC mains, both of which are outside the scope of this document.
Technical Paper

An Analysis of Data Curation Techniques throughout the Perception Development Pipeline

2023-04-11
2023-01-0055
The development of perception functions for tomorrow’s automated vehicles is driven by enormous amounts of data: often exceeding a gigabyte per second and reaching into the terabytes per hour. Data is typically gathered by a fleet of dozens of mule vehicles which multiply the data generated into the hundreds of petabytes per year. Traditional methods for fueling data-driven development would record every bit of every second of a data logging drive on solid-state drives located on a PC in the vehicle. Recorded data must then be exported from these drives using an upload station which pushes to the data lake after arriving back at the garage. This paper considers different techniques for curating logged data.
Journal Article

Development of Digital Shearography for Dual Sensitivity Simultaneous Measurement Using Carrier Frequency Spatial Phase Shift Technology

2023-04-11
2023-01-0068
Digital shearography has many advantages, such as full-field, non-contact, high sensitivity, and good robustness. It was widely used to measure the deformation and strain of materials, also to the application of nondestructive testing (NDT). However, most digital sherography applications can only work in one field of view per measurement, and some small defects may not be detected as a result. Multiple measurements of different fields of view are needed to solve this issue, which will increase the measurement time and cost. The difficulty in performing multiple measurements may also increase for cases where the loading is not repeatable. Therefore, a system capable of measuring dual fields of view at the same time is necessary. The carrier frequency spatial phase shift method may be a good candidate to reach this goal because it can simultaneously record phase information of multiple images, e.g. two speckle interferograms with different fields of view.
Technical Paper

Evaluation of Tesla Dashcam Video System for Speed Determination Via Reverse Projection Photogrammetry

2023-04-11
2023-01-0629
Recent Tesla models contain four integrated onboard cameras that serve the Autopilot and Self-Driving Capabilities of the vehicle and act as a dashcam by recording footage to a local USB drive. The purpose of this study is to analyze the footage recorded by the integrated cameras and determine its suitability for speed determinations of both the host vehicle and surrounding vehicles through photogrammetry analyses. The front and rear cameras of the test vehicle (2019 Tesla Model 3) were calibrated for focal length and lens distortion characteristics. Two types of tests were performed to determine host vehicle speed: constant-speed and acceleration. Several frames from each test were analyzed. The distance between camera locations was used to gather vehicle speed through a time distance analysis. These speeds were compared to those gathered via the onboard GPS instrumentation.
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