defects/voids
defects/voids
(OP)
Not so long ago while doing a part we found a very strange void. It had happened before we thought that a substance in the surface of the mold could be the problem (oil, water, Etc)this last time it appear without going all the way down to the mold, and we are puzzled how it could happened.the line you see in the bottom is not metal or anything like that it seems to be a stress mark. the profile if we had a section of it would be of half an hour glass. I wonder if someone has an idea of what could make this type of a void.





RE: defects/voids
RE: defects/voids
It looks like a trapped air bubble that has not had time to come to the surface before the resin hardened. This can happen with vacuum bagged lay ups and with resin transfer molding, it is not so common in pre preg lay ups.
B.E.
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor
RE: defects/voids
RE: defects/voids
How are you molding the part, is it an extrusion, or is this a hot melt press dropping into a cavity mold?
B.E.
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor
RE: defects/voids
B.E.
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor