Instron Testing Machine Programming

How do you propose to push a 110mm "wire" through a 100mm hole?

What's the wall thickness of the 100mm "tube"? What material? Etc. Etc.

Please give more detail.

OPPPS, you are right! Measures are as follows: wire diameter: 2.5mm, lenght: 110 mm. Tube diameter 2.7.. x 100 mm lenght

Thanks,

Snaketails already explained it to me. Boy, I'm dense!

If you want to do it real fast, keep F = ma in mind.

What does the Intron measure, anyway?

Established in 1946, Instron manufactures and services materials testing instruments, systems, and accessories, providing you with comprehensive solutions for all your research, quality, and service-life testing requirements. Our machines evaluate the mechanical properties of materials and components using tension, compression, flexure, fatigue, impact, torsion and hardness tests. We offer a broad range of service capabilities, including calibration, training, technical support, and assistance with laboratory management.

I don't have an answer for you, but from what I'm reading, and others seem to have a problem seeing it this way..

pushing a 2,5mm dia rod by 110mm long down a tube with ID of 2,7mm and length of 100mm

Mate, I think the best way to do it is to do physical measurements, as the material your using, will have different abrasion characteristics depending on what the abrasive is..

Also, if it has the consistency of toothpaste, is the abrasive material also pumped in so the rod is not pushing it out on its first application

"I don't have an answer for you, but from what I'm reading, and others seem to have a problem seeing it this way.. pushing a 2,5mm dia rod by 110mm long down a tube with ID of 2,7mm and length of 100mm" You are right, wrote in a hurry and mixed up the figures. I would like to avoid physical measurements as we are dealing with a practical problem: the user of a device pushes the material contained within a tube (cannula / needle) by means of a stylet (rod / wire). There is an ideal consistency for this material at which the stylet glides trough the cannula. I would like to know how much force is applied on the stylet to empty the tube. http://picasaweb.google.com/lh/photo/R21zR59I7qd8zbwjDYwXFKE3fySz0PP7F1rd0Zugn1g?feat=directlink In this pic you see a tube 40 mm in dia x 150 mm in length that is fixed to the plate of the machine. The upper end is closed by means of a metal disc acting as a lid, which has a 3mm hole in the center. The cannula (tube) is passed trough this hole. As the cannula has got handles that fit into a groove, it remains in a fixed position. Once cannula has been filled up, the trocar is inserted 10 mm into the cannula and the measuring tool of the Instron´s "arm" is moved downwards until it rests on the top of the trocar. When the operator hits "go", the arm starts descending at a speed that has been previously programmed. http://picasaweb.google.com/lh/photo/Fs9wpuVLNya8hxS42dVVqKE3fySz0PP7F1rd0Zugn1g?feat=directlink To those with experience in the use of Instron´s: what would the best parameter variables for doing this test? Thanks a lot!

Here are your pics, to save others the trouble:

I'm having a bit of difficulty sorting things out, here. Your post #7 suggests that you are an Instron employee, yet you are asking "those with experience in the use of Instron´s" for help. Shouldn't Instron (the company and its staff) be in the best position to answer this? Perhaps your question should have been addressed to "those with experience in the use of these or similar testing machines". Please elaborate.

Thanks JohnDG! I tried to upload these pictures a lot of times, but something went wrong on and on. Great you could solve this problem. In regard to your question: I do not work for Instron. Tornado asked post # 2 what a Instron is, so I pasted info from this company´s website to the reply.

Fair enough - it was the "We offer a broad range ..." that confused me. Often a good idea to make it clear when you're quoting something or someone.