Standard Guide for Material Properties Needed in Engineering Design Using Plastics

Importancia y uso:

4.1 This guide is intended to serve as a reference to the plastics community for material properties needed in engineering design.

4.2 Product datasheets or product literature typically report single-point values at ambient conditions and hence, by their very nature, are inadequate for engineering design and structural analysis of a component or system. A detailed property profile for the particular grade chosen for a given part not only enhances the confidence of the design engineer by allowing a more realistic assessment of the material under close-to-actual service environments but also may avoid premature failure of the designed component and potential liability litigation later. Additionally, it would also eliminate use of larger “design safety factors” that result in “overengineering” or “overdesign.” Not only is such overdesign unwarranted, but it adds to the total part cost, resulting in a good example of ineffective design with plastics and a prime target for substitution by other materials.

4.3 One of the problems faced by design engineers is access to comparable data among similar products from different material suppliers because of the lack of standardized reporting format in the plastics industry. ISO 10350.1, ISO 11403-1, and ISO 11403-2 are intended to address the comparability of data issue only as far as single-point and multipoint data for material selection. This guide attempts to serve as a means to standardize the format to report comparable data for engineering design. It is essential that incorporating standardized test specimen geometry and specific test conditions as recommended in Guide D1999, Practice D3641, or ISO 3167 and ISO 294-1 are an integral part of the data generation.

Subcomité:

D20.10

Volúmen:

08.03

Número ICS:

21.020 (Characteristics and design of machines, apparatus, equipment), 83.080.01 (Plastics in general)

Palabras clave:

computer aided design (CAD); computer aided engineering (CAE); engineering design; finite element analysis; manufacturability; plastics; structural analysis;