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Healing of Cracks in PBX by Thermal Pressure Aging Treatment
Author(s): 
Pages: 205-208
Year: Issue:  2
Journal: Chinese Journal of Energetic Materials

Keyword:  物理化学PBX裂纹愈合温压时效处理;
Abstract: 采用温压时效处理技术开展PBX炸药件裂纹愈合试验,结合微焦点X射线断层扫描技术(μCT)、超声和力学性能测试,对PBX裂纹愈合现象开展探索研究.结果表明:经处理后,400 μm以下的内部裂纹愈合,愈合后的PBX抗拉强度和抗压强度接近相同密度下的无损伤试件,起到了有效改善受损炸药件质量的作用.裂纹类损伤存在阀值,低于阀值的裂纹可被填充愈合,而超过阀值的裂纹难愈合.PBX炸药件损伤程度影响愈合效果.
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