中文摘要：

利用声学的排放(AE ) 技术，进为在轴的紧张下面的钢海滨的损坏进化的试验性的调查被描述。为联系损坏进化到声学的排放参数的钢看台的损坏进化模型被合并 AE 率过程理论建议。监视的 AE 结果显示损坏发生在钢的有弹性、塑料的阶段海滨。在有弹性的阶段， AE 信号主要由于表面磨擦从微损坏被发送，在塑料阶段在钢的电线之中搁浅，从电线的塑料变丑射出的 AE 信号。另外， AE 累积参数曲线非常类似于装载曲线。AE 累积参数曲线能很好为钢海滨包括损坏出现和损坏开发描述损坏进化进程。AE 技术是为评估钢海滨的损坏特征的一种有效、有用的非破坏性的技术，这被结束。

英文摘要：

Utilizing the acoustic emission（AE） technique, an experimental investigation into the damage evolution for steel strand under axial tension was described. The damage evolution model for steel stand relating the damage evolution to acoustic emission parameters was proposed by incorporating the AE rate process theory. The AE monitoring results indicate that damages occur in both elastic and plastic phases of steel strand. In elastic phase, AE signals are mainly sent out from the micro damage due to the surface friction among the wires of steel strand, while in plastic phase, AE signals emitted from the plastic deformation of wires. In addition, the AE cumulative parameters curves closely resemble the loading curve. The AE cumulative parameters curves can well describe the damage evolution process including the damage occurrence and damage development for steel strands. It is concluded that the AE technique is an effective and useful nondestructive technique for evaluating the damage characteristics of steel strand.