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Understanding scratch and mar damage performance of materials is important in the automotive industry. Hence there is need to develop a suitable method to quantify them and relate back to product performance. This paper elucidates a method to quantitatively evaluate mar defects. The method involves marring the surface of a sample with a crockmeter and the damaged surface characterized using a two-camera optical imaging system. These results were then correlated with visual survey results and a transfer function was generated using Design expert DX6net. In the validation stage, a set of newly marred samples were investigated to generate both visual rank and mar index using the transfer functions. Excellent agreement between mar index and visual survey rank reconfirmed the method's effectiveness. Mar performance of different materials (black and high gloss) can be compared using this technique on a 0-100 scale. This method can also be used to characterize polycarbonate glazing surfaces.

The automotive industry is applying the concept of modularity to numerous automotive applications. Door modules, front-end modules, seating systems and instrument panel (IP) cockpits are examples of this trend. These systems offer advantages of part reduction and elimination, assembly line optimization, inventory reduction, and sub-system level design and validation. An IP cockpit is one of the most complex vehicle systems, not only because of the large number of components, but because of the numerous build variations available to the OEM. The OEM realizes maximum benefit when the IP cockpit is assembled as a module. The Integrated Structural HVAC System (ISHS) described here was designed and developed to enable the IP cockpit to be a modular system while realizing the benefits of mass reduction, cost reduction and packaging flexibility. This paper describes the components, functionality and performance that make up the ISHS system.

Automotive OEMs, insurance agencies and regulatory bodies are continuously looking at various accident statistics and proper ways of evaluating unaccounted (as per current regulations and safety ratings) accident scenarios to improve the safety standards of cars. Small overlap and oblique impacts during which a corner of a car hits a tree or the corner of another vehicle are two such situations. Most of the vehicles that are on road scored low when tested for these impact scenarios. This paper focuses on development of energy-absorbing members, using engineering thermoplastics materials, which can be mounted on the BIW of a vehicle, as countermeasures to small overlap impact. Various design and material configurations options, including metal plastic and composite plastic structural members mounted on the BIW are evaluated through CAE studies, against small overlap/oblique impact scenarios.

High repair cost and the subsequent increase in insurance cost in a highly competitive automobile market have forced every automobile original equipment manufacturer (OEM) to comply with the FMVSS and ECE-42 regulatory requirements of low-speed vehicle damageability. Although, the terminologies used are different, similar regulatory requirements also exist in Asia-pacific region. At the rear side, reducing the damage to expensive vehicle components in a low-speed pendulum impact or a low-speed barrier impact can attain a good rating for low-speed vehicle damageability. This paper focuses on a detailed study of various lightweight plastic rear beam designs and their effectiveness in reducing the damage to the vehicle during low-speed vehicle-to-vehicle collision or vehicle to barrier collision.