The Material Selection section lists environmental factors and material properties which should be considered when determining appropriate fan material(s) for a given application.

The Production Consideration section covers various aspects of machine selection, mold design, and process control.

The Initial Structural Integrity section lists factors which should be considered in addition to those covered by the same section of SAE J1390.

The In-Vehicle Testing section lists factors which should be considered in addition to those covered by the same section of SAE J1390.

The Laboratory Testing section addresses some test considerations and methods for nonmetallic fan which differ from those used with metallic fans or which were not included in the Durability Test Methods section of SAE J1390.

Purpose

This report exists to identify general methodology which addresses the areas of evaluation listed previously for injection-molded nylon fans. It is envisioned that those working with other processes and/or materials can use SAE J1390 and this document as starting points in the development of structural analysis methodology pertinent to their particular combinations(s).

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