Effect of the Preexisting Fissure with Different Fillings in PMMA on Blast-Induced Crack Propagation

<div>Relationship between <i>θ</i> and <span class="nowrap"><svg height="11.8174pt" id="M61" style="vertical-align:-3.1815pt" version="1.1" viewbox="-0.0498162 -8.6359 14.3785 11.8174" width="14.3785pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M697 650H468L461 623L492 619C539 613 547 605 518 546C481 471 367 264 278 116H276C239 278 197 500 186 567C180 604 185 613 226 619L252 623L260 650H24L17 623C78 617 92 613 108 533L216 -11H247C365 200 515 462 560 529C616 612 624 615 689 623L697 650Z" id="g113-87"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.332,3.132)"><path d="M682 0V33C615 38 603 49 571 134C507 305 441 494 378 665L343 655L136 136C101 48 86 41 22 33V0H246V33C170 41 161 50 183 112C196 152 209 192 224 232H441C461 176 478 126 493 87C504 49 499 41 433 33V0H682ZM425 279H242C273 363 303 448 335 533H337L425 279Z" id="g58-63"></path></g></svg>.</span> (a) Air; (b) soil; (c) water.</div>

Advances in Materials Science and Engineering

fig24

Figure 24

Figure 24: Effect of the Preexisting Fissure with Different Fillings in PMMA on Blast-Induced Crack Propagation 