I am struggling to define the sample size of specimen for Tension Compression Fatigue Testing of Polymer Matrix Composites. Is there any ASTM standard for the same? If not, what sample size should I take to avoid buckling of the sample. I want to test at R=-1. For tension-tension fatigue testing I will be following ASTM D3479 standard.
Dear Ateeb Ahmad Khan
You can base your sample size on similar, high-quality research published in highly ranked journals. With the same sample sizes they took, you can justify your work scientifically.
It is also possible to suffice by knowing that a sample >=30, this size is called a large sample according to all statistical books and references. If you can reach this size, it is scientifically justified.
You can use the basic function to calculate the Cochrane sample size, but the sample size will be large and range from 100 to 400 and this may be expensive for you.
In the end, I advise you to use the G-POWER software, as it is easy to use and simple, and its options are clear and comprehensive.
Best wishes,
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials Chemistry
- Polymer Chemistry