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Technical Paper

Development of a transmission-illumination-based crack detection method using translucent tools for testing of thin-walled metal sheets and foils

2022-03-29
2022-01-0242
The formability of thin-walled metallic sheets and foils is increasingly gaining in importance in the automotive industry and in medical and food packaging. As a result, the demand for methods to test the deep drawing and stretch forming capabilities of these materials is increasing significantly as well. In deep drawing and stretch forming, the in-situ crack detection is either performed manually by purely visual evaluation by the machine operator or automatically by a crack detection system. The automatic crack detection method commonly integrated in sheet metal testing machines functions by analyzing the drawing force during forming. However, friction, vibration, and machine noise are disturbance variables that prevent crack detection in thin sheets and foils. The same disturbance variables also prevent robust crack detection in thin sheets and foils by systems that analyze structure-borne sound.
Standard

GASKET, METALLIC, ENCASED, ANNULAR, COPPER

2021-12-13
CURRENT
AS35769C
THIS STANDARD ESTABLISHES THE DIMENSIONAL AND VISUAL QUALITY REQUIREMENTS, LOT REQUIREMENTS, AND PACKAGING AND LABELLING REQUIREMENTS FOR METALLIC-ENCASED COPPER GASKETS MANUFACTURED PER AMS-HH-G-101 TYPE III - STYLE J. IT SHALL BE USED FOR PROCUREMENT PURPOSES.
Standard

GASKET, METALLIC, ENCASED, ANNULAR, COPPER

2021-10-15
HISTORICAL
AS35769B
THIS STANDARD ESTABLISHES THE DIMENSIONAL AND VISUAL QUALITY REQUIREMENTS, LOT REQUIREMENTS, AND PACKAGING AND LABELLING REQUIREMENTS FOR METALLIC-ENCASED COPPER GASKETS MANUFACTURED PER AMS-HH-G-101 TYPE III - STYLE J. IT SHALL BE USED FOR PROCUREMENT PURPOSES.
Technical Paper

Mechanical Studies on Polycaprolactone Based Green Composite

2021-10-01
2021-28-0242
In the last decade, there was growing interest in the use of green composites because of their environment-friendly nature, improvement in mechanical & chemical properties, better processability, and low cost. In this work, short sisal fiber was reinforced in a polycaprolactone (PCL) matrix and four different degradable green composites were developed with different weight fractions. Experimental studies were conducted as per standard to find the mechanical properties of PCL based composites. The data obtained shows that there is a 22% increase in tensile strength, 18% increase in hardness and 100% increase in impact strength for the specimen with 10% sisal fiber compared to neat PCL specimen. The mechanical property reduces when the fiber content is increased to 15%. These PCL based composites shall find applications in the packaging industry and consumer goods that have less service temperature.
Technical Paper

Customer Usage Profile based Luggage Compartment Development at Concept Phase

2021-10-01
2021-28-0153
The SAE J1100 based standard cargo volume index methods and predefined luggage objects are very specific to United States population. The European luggage volume calculation and standard luggage calculations are primarily based on DIN and ISO standards. Luggage volume declaration by manufacturers are based on any of these methods. The calculations are complicated and there is a possibility of declaring different values for similar luggage compartments. The major purchase decision of vehicle is based on its luggage capacity and current methods are very limited to make an intelligent decision by a customer. Market specific customer usage patterns for luggage requirements and protecting them in vehicle architecture upfront in concept stage is important to retain the market position and buying preference of customers. The usage patterns is collected from customer clinics and marketing inputs.
Standard

O-RING MOLDED FROM AMS-R-7362 NITRILE RUBBER MATERIAL

2021-09-15
CURRENT
AS29561C
THIS STANDARD ESTABLISHES THE DIMENSIONAL AND VISUAL QUALITY REQUIREMENTS, LOT REQUIREMENTS AND PACKAGING AND LABELING REQUIREMENTS FOR O-RINGS MOLDED FROM AMS-R-7362 NITRILE RUBBER. IT SHALL BE USED FOR PROCUREMENT PURPOSES.
Technical Paper

A Novel Dissipative Acoustic Material

2021-08-31
2021-01-1128
Due to modern trends in the automotive industry, such as vehicle electrification, light-weighting, reduced NVH (Noise, Vibration and Harshness) packaging space, etc., it is desirable to have a low profile and light-weight acoustic material with multi-functionality. If one single layer of a thin acoustic material can provide comparable absorption and transmission loss to a multilayer treatment, it will benefit the industry by saving weight, packaging space and system cost. Acoustic absorption and sound transmission loss performance of a new dissipative material at reduced weight and thickness is introduced in this paper. The acoustic performance of the material was evaluated by using random incidence absorption and transmission loss as well as in-vehicle experiment. Further potential applications for this material have been identified using the Statistical Energy Analysis (SEA) method with panel leakage considered.
Technical Paper

Knowledge-Based Engineering CAD Templates Applied in Vehicle Advanced Concepts Design

2021-05-04
2021-01-5049
This work is part of a series of studies developed by the author. It is intended to systematically address the study and definitions of advanced concepts for the development of automotive design with a focus on Vehicle Definition (VD) and Occupant Packaging (VOP). The methodology presented here is based on the concepts of Knowledge-Based Engineering (KBE) that captures consolidated engineering knowledge that is repeatable, reusable, and noncreative. KBE’s goal is to optimize engineering tools in pursuit of best practices and performance gains, reducing time and cost. This methodology proposes the creation of a three-dimensional (3D) digital model using a Computer-Aided Design (CAD) tool, which will be called here the CAD KBE template. This model is in line with neural network technology that mimics the brain’s own problem-solving process, and every single template will be organized interdependently with other templates.
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