Crack Damage Characterization in Ti-6Al-4V by Surface White- Light Profilometry

机译：表面白光轮廓分析法表征Ti-6Al-4V中的裂纹损伤

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A high-resolution quantitative evaluation method to assess fatigue crack stability was developed and successfully tested on Ti-6Al-4V loaded cracked samples with two different microstructures. The method involves surface topography measurement at the tip of previously detected cracks. This newly developed nondestructive evaluation method measures the three-dimensional deformation zone ahead of the crack tip through white light interference microscopy and uses this new source of information to create better life prediction models. The method measures surface crack-deformation zone growth as a function of time, which is found to rise exponentially with stress intensity factor of damaged material. A critical rate of change in surface deformation at crack tip indicates approaching crack instability.

机译：开发了一种评估疲劳裂纹稳定性的高分辨率定量评估方法，并成功地在具有两种不同微观结构的Ti-6Al-4V裂纹样品上进行了测试。该方法包括在先前检测到的裂纹尖端处进行表面形貌测量。这种新开发的无损评估方法通过白光干涉显微镜测量了裂纹尖端之前的三维变形区，并使用这种新的信息源创建了更好的寿命预测模型。该方法测量表面裂纹-变形区随时间的增长，发现其随损坏材料的应力强度因子呈指数增长。裂纹尖端处表面变形的临界变化率表明接近裂纹不稳定性。

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来源
《World Conference on Titanium v.3; 20030713-20030718; Hamburg; DE》|2003年|P.1941-1948|共8页
会议地点 Hamburg(DE);Hamburg(DE)
作者
J. Schroeder; N. Meyendorf; E. B. Shell; D. Eylon;
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University of Dayton, Dayton, OH, USA;

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原文格式 PDF
正文语种 eng
中图分类钛;
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1. Influence of foreign-object damage on crack initiation and early crack growth during high-cycle fatigue of Ti-6Al-4V [J] . Peters J.O., Ritchie R.O. Engineering Fracture Mechanics . 2001,第3期

机译：Ti-6Al-4V高周疲劳过程中异物损伤对裂纹萌生和早期裂纹扩展的影响
2. Influence of foreign-object damage on crack initiation and early crack growth during high-cycle fatigue of Ti-6Al-4V [J] . J. O. Peters, R. O. Ritchie Engineering Fracture Mechanics . 2000,第3期

机译：Ti-6Al-4V高周疲劳过程中异物损伤对裂纹萌生和早期裂纹扩展的影响
3. Laser ultrasonic inspection system with a 3D surface profilometry to detect surface cracks [J] . Park SK, Baik SH, Cha HK, Modern Physics Letters, B. Condensed Matter Physics, Statistical Physics, Applied Physics . 2008,第11期

机译：带有3D表面轮廓仪的激光超声检测系统可检测表面裂纹
4. Crack Damage Characterization in Ti-6Al-4V by Surface White- Light Profilometry [C] . J. Schroeder, N. Meyendorf, E. B. Shell, World conference on titanium . 2004

机译：表面白光轮廓测定裂纹损伤TI-6AL-4V损伤表征
5. Fatigue Crack Growth in Complex Residual Stress Fields Due to Surface Treatment and Foreign Object Damage Under Simulated Flight Cycles [D] . Zabeen, Suraiya. 2012

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6. Coherent Light Photo-modification Mass Transport Effect and Surface Relief Formation in AsxS100-x Nanolayers: Absorption Edge XPS and Raman Spectroscopy Combined with Profilometry Study [O] . O. Kondrat, R. Holomb, A. Csik, 2017

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Crack Damage Characterization in Ti-6Al-4V by Surface White- Light Profilometry

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