Discipline: Biological Sciences
Subcategory: Biomedical Engineering
Session: 2
Room: Exhibit Hall A
Destiny King - Delaware State University
One of the ways to obtain a bone sample’s strength is measuring the elasticity range of the sample. The elasticity range of a bone is the distance you can compress or bend the bone without effecting its original dimensions. If the sample is compressed within that range, when the load force is removed the sample will return to its initial dimensions. If the bone is compressed or bent outside that range, the sample’s structure can be damaged, changing the sample?s dimensions. There were two tests performed to test the elasticity range; a compression test and a bend test utilizing an INSTRON E3000 compression device. In the compression test, 10 10x10x10 mm cubes samples of bovine femur cortical bone was used. The cube-shaped samples were compressed in all three directions to 95% of its initial dimensions in three 20 second cycles. The test was repeated at double and triple speed. In the bending test, 10 4x4x40 mm block samples of bovine femur cortical bone was used. The block-shaped samples were bent in two directions until there was a 95% displacement in three 20 second cycles. The results showed that although all dimensions were the same, the amount of force was inconsistent. This can be since bone tissues are heterogeneous; measuring any mechanical properties will vary within a single sample or from sample to sample. The location the sample came from will affect the results considering different areas on the same bone will require different amounts of strength. All of our samples came from the same animal, in future experiments to make up for these differences, larger sample size can be used. Samples from different animals or different bones will make the results more diverse. With this information, a better understanding of how to collect information on bone tissue regardless of variations.
Funder Acknowledgement(s): Philadelphia AMP: Alliance for Minority Participation 2019 Summer grant
Faculty Advisor: Adam Mazurkiewicz, adam.mazurkiewicz@utp.edu.pl
Role: After the bone tissue samples was cut, I used an INSTRON E3000 compression device to experiment. There was a total of 20 samples. Each one was tested three times in a bending test or a compression test; Once at normal speed, then double speed, and final triple speed. I then analyzed the data collected from the machine to create graphs and find important statically information.