Standardization of high-energy laser impact tests with respect to temperature, reflection and perforation time

Abstract High-energy laser impact tests on identical materials and irradiation parameters often show deviating results between different testing institutes. This particularly affects the specular component of the reflection and the temperatures. Even the supposedly easy-to-determine perforation time sometimes shows large variations between different test institutes. For a reliable and reproducible determination of test results, a standardization of the experimental setups is necessary. Test results using two different reference materials are presented. These tests demonstrate that standardizing experimental setups and evaluation methods significantly reduces the deviations of the experimental results. The presented multi-institutional approach aims at gaining data of laser reflection, temperature, and perforation time of laser impacted samples, and at developing an optimized experimental setup based on different existing laboratory equipment and experimental approaches.