My name is Sebastian Kirmse. I am a graduate student in Mechanical Engineering and Systems Engineering at the University of South Alabama and am currently working on shear strength testing of CFRP panels reinforced with carbon nanofibers for my Master's Thesis.
I am planning on performing the following two tests:
ASTM D2344: "Standard Test Method for Short-Beam Strength of Polymer Matrix Composite Materials and Their Laminates"
ASTM D3846: "Standard Test Method for In-Plane Shear Strength of Reinforced Plastics".
Now, looking at the two tests, I got confused about the difference between in-plane shear strength and interlaminar shear strength.
Also, it seems to me, even though ASTM D3846 is called in-plane shear strength, it is actually an interlaminar shear like ASTM D2344.
So, my questions are:
Let me know if you need any additional information from me in order to be able to answer those questions.
Mechanical Engineer/Laboratory Manager
Composite Mechanics Lab
Dept. of Mechanical Engineering
University of Utah
1495 E. 100 S., MEK 1550
Salt Lake City, UT 84112
You are correct that D3846 is an interlaminar shear test. Here's a link to a brief article discussing the issue.