Tensile tester.

[Tin Falcon]

Does anyone here have experience with or know a good link to a simple INEXPENSIVE shop built tensile tester that would be suitable for testing test blanks generated by a 3d printer ??

I have consulted the almighty GOOGLE with less than satisfactory results.

I have seen and downloaded the plans for the open source "Freeloader" but at a build price of about $4000 for materials not in my budget.
Some of the basic Mark 10 products would likely work but IIRC somewhere in the $ 1500 range.

Should not be that difficult to build some aluminum extrusion a pair of jaws to hold the material a stepper motor , gears and lead screw.
a load cell to sense force and a HF digital caliper to measure stretch before failure.

And possibly a Dataq DI-145 to handle the data acquisition.

http://www.dataq.com/products/di-145/

With the advent of 3d printers and 3d prosthetics IMHO it would be valuable to have access to material testing.

Tin

 

[canadianhorsepower]

Does anyone here have experience with or know a good link to a simple INEXPENSIVE shop built tensile tester that would be suitable for testing test blanks generated by a 3d printer ??



Tin

is this any good for you

[ame]https://www.youtube.com/watch?v=Z11a7CRK3Mo[/ame]

 

[Tin Falcon]

CHP yes I saw that one. A bit overkill for plastic.
I would like something that will throw a pair of graphs on a computer screen.

whiskey for the price of water maybe.
I think it is doable just need to find the right combination of hardware and software.
I have an old dataq DI194RS serial port box but have not taken the time to explore the possibilities. Analog input from a load cell is easy that is part of my life digital input from a cheap dial caliper a little higher on the learning curve.
The dataq software has a chart recorder

for $30 it may be worth getting the new usb dataq box.

 

[canadianhorsepower]

CHP yes I saw that one. A bit overkill for plastic.
I would like something that will throw a pair of graphs on a computer screen.

.

you mean something like this

[ame]https://www.youtube.com/watch?v=D8U4G5kcpcM[/ame]

1 it would have to be hydraulique
2 a couple of pressure transducer
3 a couple of bing sensor
and a pic program is all you need

 

[Tin Falcon]

Maybe something like this to start with then add a motor later.

tin