A New Transducer to Monitor Fatigue Crack Propagation
A New Transducer to Monitor Fatigue Crack Propagation
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监测疲劳裂纹扩展的新型传感器
DOI：
10.1520/jte10681j
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发表时间：
1983
影响因子：
1.2
通讯作者：
W. Logsdon
中科院分区：
文献类型：
--
作者：
P. Liaw;H. Hartmann;W. Logsdon
溅射沉积技术已成功地用于将薄膜Krak-Gage®形式的高温DC传感器直接原子融合到测试样本上，以获得疲劳裂纹扩展速率数据。在288 ° C和427°C（550 ° F和800°F）下，通过该技术测量的疲劳裂纹扩展速率与通过柔度法测量的结果非常一致。数据采集和分析通过与计算机接口实现自动化，这节省了与疲劳裂纹扩展测试相关的昂贵劳动力。这一基于薄膜溅射技术的新进展有望使研究人员能够在各种不利的高温环境中进行疲劳和断裂力学测试。
A sputter deposition technique has been successfully used to fuse atomically a high-temperature DC transducer, in the form of a thin film Krak-Gage®, directly onto a test specimen for developing fatigue crack propagation rate data. The rates of fatigue crack growth measured by this technique are in good agreement with those measured by the compliance method at 288 and 427°C (550 and 800°F). The data acquisition and analysis are automated by interfacing with a computer, which saves costly labor associated with fatigue crack growth tests. This new development, based on thin film sputtering technology, is expected to enable researchers to conduct fatigue and fracture mechanics testing in various adverse high-temperature environments.