I am following ASTM D7264 for conducting Flexural strength test of natural fiber polymer composite. Initially support span to thickness ratio of 32:1 was planned but due to miscommunication 32:1 is now total length to thickness ratio. Now if I am using 20:1 which is also allowed as per the ASTM standard I will have 36% of total length as overhanging portion. The standard recommends about 20%, doesn't say if it os minimum or maximum. Does taking higher overhanging length effect the result?
The standard does recommend that the overhanging length should be about 20% of the total length, but it does not specify a minimum or maximum value. However, it is possible that a higher overhanging length could affect the results of the test.
In general, a longer overhanging length may result in a higher bending moment at the point of maximum load, which could lead to higher flexural strength values. However, it is also possible that a longer overhanging length could result in additional bending deformation or failure at the outermost fibers, which could lead to lower flexural strength values.
Therefore, it is important to consider the effect of the overhanging length on the results of the test and to carefully follow the recommended guidelines in the standard. It may also be helpful to conduct additional tests with different overhanging lengths to understand how this parameter affects the flexural strength of the composite material.
- Badges
- Science topic
- Similar topics
- Engineering
- Modeling