Hello, I am working on a project where I will have to do some shear cell testing, I have some basic under standing (very basic). and I have done some research on the internet. I have a shear cell tester. it is very basic, geared motor with a rod to push on sample , which is under a weight. I believe what I am looking for is cohesive strength of a material. Between the rod and sample I will have a load cell which is hooked up to a data acquisition unit. This will let me record the applied force on the side of the sample. I believe this will give me a "shear force" value. My question is how do I determine the cohesive strength?? I am sorry If this question seem vague. I am left with this project on my hands:surprised, and I am trying to do my best to figure it out:grumpy:. I never had the opportunity to learn the whole theory behind shear cell testing from my prior boss (left the company), which was the guy who normally did the tests. Thank you all.