Correlating Composite Damage to Impact Energy

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Posted on April 3, 2019 | Completed on April 1, 2019 | By: Defense Systems Information Analysis Center (DSIAC)

What is the correlation between impact energy and resulting damage diameter size in composite materials?

DSIAC was asked if there are any equations that correlate impact energy to the resulting damage diameter in a composite material. A DSIAC subject matter expert at Texas Research Institute Austin (TRI Austin) discussed the issue with the inquirer and found a number of references that provide experimentally-based correlations between impact energy and damage diameter, although these are very specific to the materials system examined. An expression was identified to determine damage diameter; however, this required knowing the impact force rather than the impact energy, which required using additional instrumentation.  A report summarizing the findings was delivered to the inquirer.

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