精品文档---下载后可任意编辑PE/PE 复合材料拉伸断裂过程声发射源特性之讨论的开题报告【摘要】声发射检测技术是一种有效的非破坏性检测方法，被广泛应用于材料的力学性能讨论、裂纹扩展监测等领域。本文拟讨论 PE/PE复合材料在拉伸断裂过程中产生声发射的特性及其与材料断裂机制之间的关系。采纳声发射检测技术，对复合材料的拉伸断裂过程中的声发射信号进行实时监测，并分析其频域和时域特征。同时，结合断口形貌观察和显微镜观察，分析声发射源与材料断裂机制之间的关系，揭示材料断裂过程中的声发射机制。该讨论对 PE/PE 复合材料的力学性能讨论和应用具有一定的理论和实际意义。【关键词】声发射；PE/PE 复合材料；拉伸断裂；声发射源；断裂机制【Abstract】Acoustic emission detection technology is an effective non-destructive testing method, widely used in the study of mechanical properties of materials, crack propagation monitoring and other fields. In this paper, we study the characteristics of acoustic emission generated during the tensile fracture process of PE/PE composite materials and its relationship with the material fracture mechanism. The acoustic emission signals during the tensile fracture process of the composite material are monitored in real time by acoustic emission detection technology, and their frequency domain and time domain characteristics are analyzed. At the same time, combined with the observation of fracture morphology and microscopic observation, the relationship between acoustic emission source and material fracture mechanism is analyzed to reveal the acoustic emission mechanism in the material fracture process. This study has certain theoretical and practical significance for the study and application of the mechanical properties of PE/PE composite materials.【Keywords】Acoustic emission; PE/PE composite material; Tensile fracture; Acoustic emission source; Fracture mechanism
