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Technical Paper

AM-lite & AM-HP2 - New Magnesium Alloys Offer New Opportunities

2006-04-03
2006-01-1564
Two new magnesium die casting alloys, AM-lite and AM-HP2, have been developed which address issues related to magnesium applications. AM-lite offers considerable advantages over the existing general purpose die-casting alloy AZ91D. AM-lite has superior diecastability, significantly improved as-cast surface quality, superior surface definition, and is highly suitable for decorative surface finishing processes including electroplated in a process that is similar to zinc. AM-HP2 is a new creep resistant alloy that provides a combination of good diecastability and creep resistance at temperatures of relevance to powertrain applications.
Technical Paper

A New 5MPH Bumper System

1994-11-01
942277
A new bumper system which provides 8 kph (5 mph) vehicle protection with superior quality, outstanding durability and high value is in production. The system includes five new technologies: Hot stamped, ultra high strength front beam, 970 N/mm2 (160 KSI) which also is the #1 body structure crossmember. Ultra high strength roll formed rear beam 1150 N/mm2 (190 KSI). polypropylene foam isolators designed for controlled energy management Thermoplastic olefin (TPO), injection molded fascias Two component urethane paint for long term color, gloss and scratch resistance. This bumper system, installed on over 100,000 vehicles so far, meets both MPV and passenger car 8 kph standards. Consumer and insurance industry trends indicate increasing demand for Multi Purpose Vehicle (MPV) bumper systems which meet 8 kph criteria. The major competitors in the MPV market (Aerostar, Grand Caravan, Toyota Previa, GM APV's, and Mazda MPV) have either 0 kph or at best 4 kph systems.
Technical Paper

Full Vehicle Variability Modeling

1994-11-01
942334
Dimensional variability must be managed. Assembly plant installation processes which require operator adjustment result in random, unpredictable variability. On the other hand, processes which use locators and quality controlled components eliminate operator adjustments. This results in managed variability with repeatable and dimensionally consistent end products. The 1994½ Windstar mini-van incorporated locators with a detailed component quality control plan and then went one step further. Dimensional variability was managed and verified during the design process to ensure that every vehicle produced would meet customer quality standards. To verify that the Windstar would achieve the customer quality standards, by design, a full vehicle dimensional variability model was developed. The body structure, interior trim, major instrument panel components, suspension, steering and various subsystems were modeled.
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