Automotive Adhesives

By on November 15, 2018 in IN THE NEWS, MATERIAL MATTERS

The use of adhesives in vehicles is on the rise.

According to 3M, the Post-it folks, “Some of today’s vehicles contain more than 500 linear feet of adhesive . . . This is nearly 15 times more adhesive than was used in a vehicle in 2001. There is no question when it comes to lightweight vehicle design, new materials need new methods for joining them together . . . Adhesives are playing a larger role in ensuring that engineers can put these materials together without the worry of corrosion, different melting points or thermal expansion.”

“The move to using adhesives is a byproduct of moving to the use of many different materials in a vehicle,” says Tod Dalrymple, SIMULIA R&D applications director, AM & materials applications, Dassault Systèmes. “It is not the adhesives that are directly the driver of the weight savings, but the move to lighterweight materials, which is enabled by the use of adhesives,” adds Shawn Freeman, structures R&D lead customer projects director, Dassault Systèmes.

Freeman points out adhesives are being used much more today as compared to 20 years ago. “There have always been low-volume uses of non-traditional materials among the original equipment manufacturers, but now we see a lot more flexibility in material selection even for the large-volume vehicles,” he says.

Adhesives have their downside. “When an assembly needs to be repaired, it’s one thing to remove the bolts and fasteners to disassemble it, but quite another to debond a glued part,” John O’Connor, Siemens PLM Software’s director of Aerospace Product and Market Strategy, says.