I'm currently working on a project involving TPE Filament (3D Printer) as my base material. The manufacturer doesn't have the data of Young's Modulus that I need. What is the procedure for finding Young's Modulus of this material? What is the standard geometry of the specimen for testing elastomers?
Currently I only have access to a Tensile Test Machine, Hardness Test Machine, Impact Test Machine.
Thank you.
D412 (Standard Test Methods for Vulcanized Rubber and Thermoplastic Elastomers—Tension) and ISO 37 can be used as the standard method to calculate tensile properties by using a typical tensile test machine.
However, it should be noted that elastomers do not show correct data at low strains. Thus, most researchers reports the stress at a constant strain (as I reported in my articles). This value so called modulus at this strain . This method provides more correct results for elastomers.
It can be done by using a thermomechanical analyser. After calculating the depth of indentation the Youngs Modulus can be calculated by Finkins Equation which involves E, the Young’s modulus, P normal load, R the radius of the spherically
tipped indentor, H the sheet thickness, d the depth of indentor
penetration, and y Poisson’s ratio of the elastic layer (which for rubber
is approximately equal to 0.5).
You can use the ASTM 412A Standard to measure the mechanical properties of the vulcanized rubbers
- Badges
- Science topic
- Similar topics
- Automotive Engineering
- Machines