계장화에 의한 고분자 재료의 낙하추식 충격시험

Instrumented Drop Weight Impact Testing of Polymer Materials

Polymer materials have been used offensively as construction materials for automobiles, ships, and airplanes in recent years, and their impact resistance has been obliged to be examined. In the present study, a dropped load and a specimen, equipped with high responsible strain gauges respectively, were dropped and then the changes of load and absorption energy with time were observed. It was found that the waveforms for dropped weight coincided with output signal wave for specimen during the destruction test. Based on this experimental result, three disc type of specimens with different compositions were prepared and examined. This instrumented impact test method showed that each specimen can be distinguished from each other better than conventional tests and is expected to contribute to assess test results of impact resistance for some materials under development.