Quantitative Analysis of Surface Quality for Exterior Body Panels Ashland Chemical Company Columbus, OH

Format:

Conference/Event

Author/Creator:

Hupp, Stephen S., author.

Conference Name:

SAE International Congress & Exposition (1988-02-29 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1988

Summary:

One of the important considerations in SMC for automotive exterior body panels is the surface quality of molded parts. Various methods have been used to judge surface waviness, including profiling with electromechanical transducers and visual methods such as interference patterns and high and low angle reflections of grid patterns. Surface profiles can be quantified, but have not proven reliable and generally useful for evaluating surfaces. Host companies still rely on visual inspection and qualitative comparisons.We have developed a quantitative method to evaluate surface waviness based on modelling low angle grid reflections. The method gives numerical evaluations of long-term waviness in molded parts which agree well with visual methods most widely used now. Line images are viewed with a video camera, digitized and analyzed with a computer, so the method is automated and routine

Notes:

Vendor supplied data

Publisher Number:

880358

Access Restriction:

Restricted for use by site license