ASTM D3846 describes the method for determining the in-plane shear strength of reinforced plastic composite materials. These specimens are typically thermosetting plastics with reinforcements that widely vary in type and thickness ranging from 2.54 mm to 6.60 mm.
- Ensuring parallelism of compression platens
- Reporting calculations in compliance with the standard
- Ensuring parallelism of compression platens – When testing according to ASTM D3846, the compression platens must be parallel to each other and in the normal plane to the axial loading. The lockable spherically-seated platens provide a means of pre-loading the assembly and locking the platen to ensure parallelism for the test.
- Reporting calculations in compliance with the standard – In order to calculate the in-plane shear strength, the user must measure the length of the failed area. Bluehill® Universal materials testing software offers a prompted test to walk users through the necessary inputs at each step. An integrated specimen measurement device can be used to automatically input the measurements into Bluehill Universal, saving time and eliminating typos.
It is important to review ASTM D3846-08(2015) in order to fully understand the test setup, procedure, and results requirements.