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I have told you this car passed the technical inspection and I know for sure they did it right. We have also inspected the car last year. We are engineers here, we know what we are doing. There was nothing wrong with that suspension arm one year ago. I am not claiming anything from anyone, and not trying to demolish Musk's statue. I am just making people aware of that suspension problem at least in early versions. I was asking what changes did they do in the revised version of the suspension, why don't you focus on the problem instead of trying to discredit me? There are others who reported similar issues, you will not manage to discredit everybody.
You say that this car passed an inspection. As a director of an airline I see many parts from airplanes that could not have been diagnosed as having a potential to fail unless they are subjected to eddy current, or dye penetration under a microscope. It appears that the part you have shown us was cracked for some time, likely before you owned it due to the corrosion on the surface of the fracture. Auto safety inspections are not this thorough.
You could prove all of us wrong, but I don't think so.
Actually there is no stress trail from the potential "void" to where the break started.To make things even worse there is a flaw in the extrusion at the point of fracture.
The context is that suspension links made from sliced extruded Aluminum have the grain structure running crosswise and break very easily.You do realize that vehicle and wheel were moved before the picture was taken, right? And that providing zero context to the failure mode provides zero useful data?
Goodbye Felicia.
Take a closer look to this failed arm. It look to me extremely porous, the center material is like sand, I can scratch it with my finger. It looks that the only structure that counts in that part is the thin metal shell, however porous, full of gas bubbles from casting.
Take a closer look to this failed arm
Stop talking about things you don't understand.
I agree, that piece looks like junk. Definitely a bad casting.
As an engineer in the aircraft industry, that looks like a disturbing amount of porosity in that casting.
Not in aero, so forgive my ignorance.
Isn't this part a sliced extrusion, and not a casting? If so, wouldn't the original slug need to be severely flawed to produce this flaw? Seems nigh impossible to produce a void internal to the extruded piece.
Given the coloration, could it be caused by prolonged internal corrosion?
Do you have a credible source stating they are extruded? Their shape does not look like something which would be created by an extrusion process, which is basically stretching and forming.The upper and lower links and the torque link are all made from slices of extruded Aluminum.