Chassis stiffening through foam injection

[Lipinhu]

Quote:Structural foam, in the 2 lb per cubic foot density that we used, can stiffen chassis members up to 40 percent.

Higher densities of foam can increase stiffness by up to 300 percent

Who wants roolbars anyway...?

Tell me something, i´ll take our cars as an example once they rust everywhere, even in MAJOR STRUCTURAL MEMBERS, if some of these major structural members are foam filled, it can prevent rust too, making no room for the water and air exposure. Could this be correct?

I've been told that this foam filling can be quite dangerous, i dont know if it the case of this specific aplication nor the propeties os that specific foam, that when we are filling the members the foam tends to expand, and if the foam doesnt dry uniformly leaving no room to expand, it will brake some spot welds. But dono if its true and never worked with polyurethane foam in any kind of aplication.

Iteresting thread