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Failure Analysis and Evaluation of Strength Properties for Brazed Joints

机译：钎焊关节强度特性的故障分析与评价

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摘要

This study was aimed at identifying failure mechanism and strength of brazed copper pipe used in household air conditioner. For these ends, the brazed joints with various brazing length were manufactured according to manufacturer's recommended methods. The 3-dimensional X-ray technique was used to identify internal flaws and their failure mechanism in brazed joints. And, strength of brazed joint was evaluated by static tests. To evaluate the effect of heat on the brazed joints, the micro-Vickers hardness is measured. Also, bursting tests were performed for burst pressure of brazed joints by using of self-designed internal pressure bursting tester.
机译：本研究旨在识别家用空调中使用的钎焊铜管的故障机制和强度。对于这些目的，根据制造商推荐的方法制造具有各种钎焊长度的钎焊接头。三维X射线技术用于识别钎焊接头中的内部缺陷及其失效机制。并且，通过静态试验评估钎焊接头的强度。为了评估热量对钎焊接头的影响，测量微维氏硬度。此外，通过使用自行设计的内部压力爆破测试仪进行钎焊接头的突发压力进行突发测试。

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