Small-scale cratering experiments I: Concrete
| Autor: | Thomas A. Weaver, R. D. Dick, C. L. Edwards, C. T. Aimone-Martin |
|---|---|
| Rok vydání: | 1998 |
| Předmět: | |
| Zdroj: | Fragblast. 2:143-180 |
| ISSN: | 1744-4977 1385-514X |
| Popis: | Three hundred small-scale explosive charge cratering tests were performed in concrete in an effort to increase the understanding of the cratering process. Charge masses ranged from 1.0 to 19.7 g (10-9 to 10-8 kt). The free face orientations were horizontal, and three inclinations of 10, 20, and 30°. Two series of tests with horizontal free faces were performed at varying charge mass length-to-diameter ratios (l: d). One series was performed at constant borehole diameter (varying charge mass) and the second series was performed at constant charge mass (varying borehole diameter). Post-shot fragmentation and fracture patterns were observed at the free surface. The test results in varying surface slope angles showed that the ratio of critical to optimum depth of charge for concrete was nearly 1.0. Increases in slope angle produced a non-linear increase in crater volume with increases in scaled depth of burial (SDOB). This was a result of a large spall lip around the crater periphery parallel to the ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|