Title: An Investigation of Dissimilar Material Joining Via Adhesive for Clear Coat to SMC

Authors: Saeil Jeon and Bob Zweng

DOI: 10.33599/nasampe/s.19.1376

Abstract: Adhesives are used increasingly in the ground transportation sector, not only for increasing body strength, but also in noise, vibration and harshness (NVH) by isolating noise better than conventional mechanical fastening techniques. Mixed material assemblies are incorporated within modern commercial vehicles where metallic and non-metallic substrates are joined together, while carefully considering environmental impacts and the durability of the joint. In this study, the viability of joining clear coated steel to bare sheet mold compound using a two component polyurethane adhesive was investigated. Lab tests and environmental ageing studies on four different colors of pigmented top-coat revealed joints which outperformed the joints made from bonding electro-coated steel to sheet mold compound surfaces. An actual full vehicle trial for this concept has validated the lab-test results through double lap-shear testing. The correlation factor was derived empirically to link the lab and actual assembly results.

References: 1. Laure Bertrand, Saeil Jeon, “ER707395 – Engineering Report”, Jan 2015 2. Laure Bertrand, Saeil Jeon, “ER708250 – Engineering Report”, Nov 2015 3. L.D.R Grant, R.D. Adams, Lucas F. M. da Silva, “Experimental and numerical analysis of single-lap joints for the automotive industry.” Int’l Journal of Adhesion and Adhesives, Vol 29., Issue 4, Pages 405 – 413, June 2009 4. G. Fessel, J.G. Broughton, N.A. Fellows, J.F. Durodola, A.R. Hutchinson, “Evaluation of different lap-shear joint geometries for automotive applications”, Int’l Journal of Adhesion and Adhesives, Vol 27., Issue 7, Pages 574 – 583, Oct 2007 5. M.D. Banea, Lucas F. M. da Silva, “The effect of temperature on the mechanical properties of adhesives for the automotive industry.” Proc IMechE J Materials: Design and Applications, 224 (2): 51-62, 2010

Conference: SAMPE 2019 - Charlotte, NC

Publication Date: 2019/05/20

SKU: TP19--1376

Pages: 13

Price: FREE