Refine Your Search

Search Results

Viewing 1 to 7 of 7
Technical Paper

Development of a One-Piece, Injection Molded, Thermoplastic Rear Bumper System with Pole Impact Protection

1997-02-24
970483
The first single-piece, rear bumper system injection molded from an engineering thermoplastic provides 8 km/h pole impact as well as required Federal Motor Vehicle Safety Standard (FMVSS) protection requirements for a small passenger vehicle. The system's efficient design features integral fascia support, eliminating bracketry and providing assembly savings at the plant. The bumper offers a 1.5 kg mass savings compared to conventional aluminum and polypropylene foam bumper systems. Additionally, its low intrusion design means neither the rear end panel nor the deck lid was damaged at the 8 km/h impacts tested. This paper will describe the bumper's design, development, and validation process, plus describe the results achieved to date.
Technical Paper

Development of an Advanced, Engineering Thermoplastic Step-Pad Bumper for a Sport Utility Vehicle

1997-02-24
970485
A conceptual step-pad bumper system has been designed for a sport utility vehicle. This bumper incorporates an all-thermoplastic solitary beam/fascia with a Class A finish and a replaceable, grained thermoplastic olefin (TPO) or urethane step pad. The rear beam is injection molded and the cover plate features integrated through-towing capabilities and electrical connections. The bumper is designed to pass FMVSS Part 581, 8 km/h impacts. The system can potentially offer a 5.0-13.6 kg weight savings at comparable costs to conventional step-pad bumper systems. This paper will detail the design and development of the concept and finite-element analysis (FEA) validation.
Technical Paper

New Fascia Materials Technology for Europe and North America

1998-02-23
980103
Owing to OEM pressures to reduce costs and mass, improve production efficiency, consolidate parts, and eliminate secondary finishing operations, a series of new-generation fascia materials in engineering thermoplastics are being positioned to replace lower performing thermoplastic polyolefins - the current industry standard in both North America and, to a lesser extent, in Europe. Among these materials are resins capable of thin-wall molding, electrostatic conductivity, primerless adhesion to paint, the ability to eliminate paint in certain segment-specific applications, and the ability to be painted on-line with the rest of the body-in-white. These new materials are expected to have a significant impact on fascia production in both North America and Europe, as requirements for fascias change to an emphasis on lighter weight, higher structural performance, lower cost, and more efficient finishing.
Technical Paper

Integrated Energy-Management Systems:Market Trends, OEM Needs, & Business Opportunities for the Tier 1 Community

1998-02-23
980110
Recent vehicle design trends require bumper systems to be crashworthy under more demanding circumstances, e.g. tighter package space, heavier vehicle mass, and wider rail spans. Meanwhile, pressure to reduce cost and weight of bumpers continues at a time when roles in the supplier community are changing. These factors have combined to increase the importance of optimizing bumper design and material properties for specific platforms. Materials suppliers have responded by developing a range of specialized engineering thermoplastic (ETP) resins that can help meet increasing performance requirements yet also offer the potential for improved manufacturing productivity, significant weight savings, and systems cost reductions. Material suppliers have also increased the level of technical design support provided to OEMs and 1st Tier suppliers.
Technical Paper

Performance Evaluations of Polyolefins vs. Engineering Thermoplastics for Blow-Molded Bumper Beams

1998-02-23
980112
The consumption of blow molded bumpers for passenger vehicles is increasing, particularly for small to mid-size vehicles. The performance required for bumpers in this class of vehicles varies by geographic region, as “global” vehicles are increasingly specified outside of the United States. For this reason, it is important to understand the impact performance provided by materials that could be blow molded into bumpers for this class of vehicles. This paper will compare the relative performance of polycarbonate/polybutylene terephthalate (PC/PBT) alloys vs. polyolefins for impact protection, weight, and processing performance.
Technical Paper

First One-Piece, Injection-Molded Thermoplastic Front-Bumper System for a Light Truck

1998-02-23
980107
The first single-piece, injection-molded, thermoplastic, front bumper for a light truck provides improved performance and reduced cost for the 1997 MY Explorer® Ltd. and 1988 MY Mountaineer® truck from Ford Motor Company. Additionally, the system provides improved impact performance, including the ability to pass 5.6 km/hr barrier impact tests without damage. Further, the advanced, 1-piece design integrates fascia attachments, reducing assembly time, and weighs 8.76 kg/bumper less than a baseline steel design. The complete system provides a cost savings vs. extruded aluminum and is competitive with steel bumpers.
Technical Paper

Performance Evaluations of Polyolefins vs. Engineering Thermoplastics for Blow Molded Bumper Beams for Mid-Size Vehicles – Part II

1999-03-01
1999-01-1015
The consumption of blow molded bumpers for passenger vehicles is increasing, particularly for small to mid-size vehicles. The performance required for bumpers in this class of vehicles varies by geographic region, as “global” vehicles are increasingly specified outside of the United States. For this reason, it is important to understand the impact performance provided by materials that could be blow molded into bumpers for this class of vehicles. This paper will compare the relative performance of polycarbonate/polybutylene terephthalate (PC/PBT) alloys vs. polyolefins for impact protection, weight, and processing performance.
X