A study on quantitative nondestructive evaluation of small closed cracks using ultrasonics 閉じた微小き裂の超音波による定量的非破壊評価に関する研究
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著者
書誌事項
- タイトル
-
A study on quantitative nondestructive evaluation of small closed cracks using ultrasonics
- タイトル別名
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閉じた微小き裂の超音波による定量的非破壊評価に関する研究
- 著者名
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Shaikh Reaz Ahmed
- 著者別名
-
シェイク リアズ アーメド
- 学位授与大学
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東北大学
- 取得学位
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博士 (工学)
- 学位授与番号
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甲第6842号
- 学位授与年月日
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1999-03-25
注記・抄録
博士論文
目次
- CONTENTS / p1 (0004.jp2)
- CHAPTER1 INTRODUCTION / p1 (0007.jp2)
- 1.1 General Background / p1 (0007.jp2)
- 1.2 Usual Nondestructive Testing Techniques / p4 (0010.jp2)
- 1.3 Brief Historical Review of Ultrasonic Technology / p8 (0014.jp2)
- 1.4 Literature Survey on Ultrasonic NDE of Cracks / p10 (0016.jp2)
- 1.5 Proposed Research Work / p19 (0025.jp2)
- 1.6 Summary / p23 (0029.jp2)
- References / p24 (0030.jp2)
- CHAPTER2 GENERAL DEFINITIONS AND BASIC PROPERTIES / p27 (0033.jp2)
- 2.1 Introduction / p27 (0033.jp2)
- 2.2 Ultrasonic Waves / p28 (0034.jp2)
- 2.3 Wave Characteristics / p29 (0035.jp2)
- 2.4 Reflection and Transmission of Wave at a Plane Boundary / p30 (0036.jp2)
- 2.5 Defraction of Ultrasonic Waves and Sound Field / p34 (0040.jp2)
- 2.6 Attenuation of Ultrasonic Waves / p36 (0042.jp2)
- 2.7 Ultrasonic Transducers / p37 (0043.jp2)
- 2.8 Basic Crack Evaluation Configurations / p39 (0045.jp2)
- 2.9 Strategy for Structural Lifetime Prediction / p42 (0048.jp2)
- 2.10 Summary / p44 (0050.jp2)
- References / p45 (0051.jp2)
- CHAPTER3 EXPERIMENTAL / p46 (0052.jp2)
- 3.1 Introduction / p46 (0052.jp2)
- 3.2 Specimen Preparation / p47 (0053.jp2)
- 3.3 Experimental Set-up / p53 (0059.jp2)
- 3.4 Measurement Procedure / p56 (0062.jp2)
- 3.5 Presentation of Experimental Data / p61 (0067.jp2)
- 3.6 Summary / p63 (0069.jp2)
- References / p64 (0070.jp2)
- CHAPTER4 THE NEW EVALUATION APPROACH / p65 (0071.jp2)
- 4.1 Introduction / p65 (0071.jp2)
- 4.2 Investigation of the Effect of Beam Incidence on the Response / p65 (0071.jp2)
- 4.3 Analysis of Echo Height and Comparison / p73 (0079.jp2)
- 4.4 Optimum Angle of Evaluation and Enhancement of Sensitivity / p84 (0090.jp2)
- 4.5 Evaluation of Closed Cracks and Discussions / p88 (0094.jp2)
- 4.6 Conclusions / p97 (0103.jp2)
- References / p97 (0103.jp2)
- CHAPTER5 THEORETICAL MODELING FOR QUANTITATIVE SIZING / p98 (0104.jp2)
- 5.1 Introduction / p98 (0104.jp2)
- 5.2 Method of Analysis of Closed Cracks / p98 (0104.jp2)
- 5.3 Analysis of the Forward Problem / p104 (0110.jp2)
- 5.4 Analysis of the Inverse Problem / p111 (0117.jp2)
- 5.5 Evaluation Results of Normal Incidence Method / p114 (0120.jp2)
- 5.6 Evaluation Results of Optimum Incidence Method and Discussions / p118 (0124.jp2)
- 5.7 Analysis of Characteristic Response Curves / p133 (0139.jp2)
- 5.8 Conclusions / p136 (0142.jp2)
- References / p136 (0142.jp2)
- CHAPTER6 GENERALIZATION OF THE EVALUATION METHOD / p137 (0143.jp2)
- 6.1 Introduction / p137 (0143.jp2)
- 6.2 Investigation of the Effect of Specimen Thickness on the Response / p137 (0143.jp2)
- 6.3 Modification of the Calibration Equation for the Open Cracks / p145 (0151.jp2)
- 6.4 Investigation of the Effect of Material Structure on the Response / p147 (0153.jp2)
- 6.5 Establishment of Calibration Equation for Carbon Steel Plates / p153 (0159.jp2)
- 6.6 Evaluation Results and Discussions / p163 (0169.jp2)
- 6.7 Conclusions / p176 (0182.jp2)
- CHAPTER7 EVALUATION OF SUB-WAVELENGTH CRACKS / p177 (0183.jp2)
- 7.1 Introduction / p177 (0183.jp2)
- 7.2 Investigation of Ultrasonic Response Against Sub-Wavelength Cracks / p177 (0183.jp2)
- 7.3 Comparison of Sensitivity / p185 (0191.jp2)
- 7.4 Effect of Crack Size and Specimen Thickness on the Optimum Angle of Evaluation / p188 (0194.jp2)
- 7.5 Extension of the Calibration Equation for Sub-Wavelength Cracks / p190 (0196.jp2)
- 7.6 Evaluation of Closed Cracks and Sensitivity Limit / p193 (0199.jp2)
- 7.7 Conclusions / p210 (0216.jp2)
- References / p210 (0216.jp2)
- CHAPTER8 CONCLUSIONS / p211 (0217.jp2)
- ACKNOWLEDGEMENTS / p215 (0221.jp2)