Infrared Laser Surface Treatment Of Sheet Molding Compound (SMC) For Adhesive Bonding: The Effect Of Power Density And Fluence On Adhesive Properties

John Newbould

doi:10.1117/12.947707

24 October 1988 Infrared Laser Surface Treatment Of Sheet Molding Compound (SMC) For Adhesive Bonding: The Effect Of Power Density And Fluence On Adhesive Properties

John Newbould

Author Affiliations +

Proceedings Volume 0957, Laser Beam Surface Treating and Coating; (1988) https://doi.org/10.1117/12.947707
Event: SPIE International Symposium on Optical Engineering and Industrial Sensing for Advance Manufacturing Technologies, 1988, Dearborn, MI, United States

Abstract

Many automotive parts, such as hoods and decklids, are made by adhesively bonding sheet molding compound (SMC) sub-assemblies. The presence of contaminants such as mold releases, together with variable chemical composition, characterizes the SMC surface. Thus some form of surface preparation is required to ensure reproducible adhesive bonding. This paper describes how a reproducible bonding surface can be obtained by ablation of the variable outer layer with an infrared laser. The effect of laser beam power density and fluence on surface properties, ablation depth, and adhesion is discussed. As laser beam delivery systems can be readily automated, this procedure has substantial potential for use in an automated SMC manufacturing system.

Citation Download Citation

John Newbould "Infrared Laser Surface Treatment Of Sheet Molding Compound (SMC) For Adhesive Bonding: The Effect Of Power Density And Fluence On Adhesive Properties", Proc. SPIE 0957, Laser Beam Surface Treating and Coating, (24 October 1988); https://doi.org/10.1117/12.947707

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