Effect of Regrind on SMA Copolymer Boss/Joint Performance Ford Motor Company

Format:

Conference/Event

Author/Creator:

Bartos, C., author.

Conference Name:

International Congress & Exposition (1995-02-27 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1995

Summary:

To minimize warranty costs, due to squeak and rattle from ill fitting joints, automotive OEMs are requiring increased durability of thermoplastic attachments. There are several evaluation techniques for determining thermoplastic joint durability performance such as: strip-to-drive torque, screw pull-out force, and clamp load fall-off. A thermoplastic attachment (id est boss) which experiences clamp load fall-off will result in a loose fitting joint and subsequently lead to squeaks and rattles. In conjunction with the boss's performance the type of captured material between the screw and the joint can also contribute significantly to the overall retention qualities of the attachment.The purpose of this paper is to evaluate: 1.) strip-to-drive ratios for thermoplastic bosses, and 2.) changes in clamp load with respect to environmental effects (id est thermal exposure) on thermoplastic bosses. Injection molded styrene-maleic anhydride (SMA) bosses were tested using three different levels of regrind content, five different boss ID's, and eleven different screw types

Notes:

Vendor supplied data

Publisher Number:

950810

Access Restriction:

Restricted for use by site license