You could try the tip of a rubber glove. They always make a nice void and show up with Ultrasound. Atleast you could cut shapes and have them well defined.
The mold release deal should work well.
It might be hard to get measurable voids in a small sample, easy to evacuate. You may need to...
The bigger issue I think George is alluding to is the thermal induced microcracking a the fiber/resin interphase. A high exotherm may cause a problem with this. Also, this could contribute to the failure by creating mircro breache in a veil...
hmmm...Run a soak test on the laminate, the...
Try the local distributor anyway, maybe he can sample you. Or he could point you to a local toll producer who may have stock that he could tap off or sell you.
It kinda depends on how big a Chem user you are and whether you have any pull. Just be straight with whomever you are talking.
There are several companies with systems and extrusions depending on the type of panels. The problem is that you can by the panels, and extrusions, or tool up your own extrusions and own the rights to them...either way somone is on the hook for a couple grand in tooling and a minimum run of...
Golly blakmax...I do agree and that is where our product differ to the world...we have a bit more tolerance of damaged bondline in most of our application. I gotta tell ya, if I saw the technician walking down the wing bouncing a golfball, I would probably get off the plane.
The flip side is...
There is a specification on how to build the hammer for tap testing. I can't find my copy of Bitzer's book right now or I would let you know a spec.
Talk to the folks at Wichitech. They have several devices that are automatic tappers with acoustic sensors. As well, the only place that you...
After twenty plus years of the industry and dealing with non-technical Sales people I will not refer to anything as FRP.
In reference to boats, tanks, tubs, cars...It almost always means some kind of fiberglass, woven or random, in a polyester matrix. In electronics it is almost always fine...
The Hexcel guides are good...Bitzer wrote them and they are the "cliff's Notes" for his "Honeycomb Technology" book. Broutman wrote a great book that includes alot of the matrix code. I found it friendlier that Zenkert or Tsai's. I have always defaulted to the Hexcel TB that RP notes, it is...
Interesting idea...sort of a rubberized binder for the cement. It is all water based so should be compatible. I really don't know that much about the concrete chemistry, but with the Polymer concretes out there, it is probably doable. Actually with an exothermic concrete you could probably...
Look at a waterbased PolyUrethane Dispersion (PUD). These are used lately as the overcoat on laminated floor. Witcobond makes one that is 30% solids, dries and is really a thermoplastic urethane (more like a hot melt then) so can be reheated and made tacky. But the 296 has a modifier that...
hmmm...Depnds on what you are doing for stiffness. Generally the ribbon is run parallel to the width of a rectangular panel because the slice is rectangular in nature.
If you analysis shows that the ribbon must be parallel to the length then that is how it should be.
If it does not matter...
I see the issues. I really don't know how to attack it without some testing. Perhaps you can model it as you are and in a separate model put together a localized example of the attachment feature and apply the stress profile from what you already have...dunno, made sense when I started typing...
You know, it may be useful to set your own internal standard. Perhaps pick a metallic substrate with appropriate surface tretments that you make your standard and then make it thin enough to allow a T-peel. You will have to go back through your "catalog" and redo some testing, but it would...
