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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Author

    • Shaikh Reaz Ahmed シェイク リアズ アーメド

Bibliographic Information

Title

A study on quantitative nondestructive evaluation of small closed cracks using ultrasonics

Other Title

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

Author

Shaikh Reaz Ahmed

Author(Another name)

シェイク リアズ アーメド

University

東北大学

Types of degree

博士 (工学)

Grant ID

甲第6842号

Degree year

1999-03-25

Note and Description

博士論文

Table of Contents

  1. CONTENTS / p1 (0004.jp2)
  2. CHAPTER1 INTRODUCTION / p1 (0007.jp2)
  3. 1.1 General Background / p1 (0007.jp2)
  4. 1.2 Usual Nondestructive Testing Techniques / p4 (0010.jp2)
  5. 1.3 Brief Historical Review of Ultrasonic Technology / p8 (0014.jp2)
  6. 1.4 Literature Survey on Ultrasonic NDE of Cracks / p10 (0016.jp2)
  7. 1.5 Proposed Research Work / p19 (0025.jp2)
  8. 1.6 Summary / p23 (0029.jp2)
  9. References / p24 (0030.jp2)
  10. CHAPTER2 GENERAL DEFINITIONS AND BASIC PROPERTIES / p27 (0033.jp2)
  11. 2.1 Introduction / p27 (0033.jp2)
  12. 2.2 Ultrasonic Waves / p28 (0034.jp2)
  13. 2.3 Wave Characteristics / p29 (0035.jp2)
  14. 2.4 Reflection and Transmission of Wave at a Plane Boundary / p30 (0036.jp2)
  15. 2.5 Defraction of Ultrasonic Waves and Sound Field / p34 (0040.jp2)
  16. 2.6 Attenuation of Ultrasonic Waves / p36 (0042.jp2)
  17. 2.7 Ultrasonic Transducers / p37 (0043.jp2)
  18. 2.8 Basic Crack Evaluation Configurations / p39 (0045.jp2)
  19. 2.9 Strategy for Structural Lifetime Prediction / p42 (0048.jp2)
  20. 2.10 Summary / p44 (0050.jp2)
  21. References / p45 (0051.jp2)
  22. CHAPTER3 EXPERIMENTAL / p46 (0052.jp2)
  23. 3.1 Introduction / p46 (0052.jp2)
  24. 3.2 Specimen Preparation / p47 (0053.jp2)
  25. 3.3 Experimental Set-up / p53 (0059.jp2)
  26. 3.4 Measurement Procedure / p56 (0062.jp2)
  27. 3.5 Presentation of Experimental Data / p61 (0067.jp2)
  28. 3.6 Summary / p63 (0069.jp2)
  29. References / p64 (0070.jp2)
  30. CHAPTER4 THE NEW EVALUATION APPROACH / p65 (0071.jp2)
  31. 4.1 Introduction / p65 (0071.jp2)
  32. 4.2 Investigation of the Effect of Beam Incidence on the Response / p65 (0071.jp2)
  33. 4.3 Analysis of Echo Height and Comparison / p73 (0079.jp2)
  34. 4.4 Optimum Angle of Evaluation and Enhancement of Sensitivity / p84 (0090.jp2)
  35. 4.5 Evaluation of Closed Cracks and Discussions / p88 (0094.jp2)
  36. 4.6 Conclusions / p97 (0103.jp2)
  37. References / p97 (0103.jp2)
  38. CHAPTER5 THEORETICAL MODELING FOR QUANTITATIVE SIZING / p98 (0104.jp2)
  39. 5.1 Introduction / p98 (0104.jp2)
  40. 5.2 Method of Analysis of Closed Cracks / p98 (0104.jp2)
  41. 5.3 Analysis of the Forward Problem / p104 (0110.jp2)
  42. 5.4 Analysis of the Inverse Problem / p111 (0117.jp2)
  43. 5.5 Evaluation Results of Normal Incidence Method / p114 (0120.jp2)
  44. 5.6 Evaluation Results of Optimum Incidence Method and Discussions / p118 (0124.jp2)
  45. 5.7 Analysis of Characteristic Response Curves / p133 (0139.jp2)
  46. 5.8 Conclusions / p136 (0142.jp2)
  47. References / p136 (0142.jp2)
  48. CHAPTER6 GENERALIZATION OF THE EVALUATION METHOD / p137 (0143.jp2)
  49. 6.1 Introduction / p137 (0143.jp2)
  50. 6.2 Investigation of the Effect of Specimen Thickness on the Response / p137 (0143.jp2)
  51. 6.3 Modification of the Calibration Equation for the Open Cracks / p145 (0151.jp2)
  52. 6.4 Investigation of the Effect of Material Structure on the Response / p147 (0153.jp2)
  53. 6.5 Establishment of Calibration Equation for Carbon Steel Plates / p153 (0159.jp2)
  54. 6.6 Evaluation Results and Discussions / p163 (0169.jp2)
  55. 6.7 Conclusions / p176 (0182.jp2)
  56. CHAPTER7 EVALUATION OF SUB-WAVELENGTH CRACKS / p177 (0183.jp2)
  57. 7.1 Introduction / p177 (0183.jp2)
  58. 7.2 Investigation of Ultrasonic Response Against Sub-Wavelength Cracks / p177 (0183.jp2)
  59. 7.3 Comparison of Sensitivity / p185 (0191.jp2)
  60. 7.4 Effect of Crack Size and Specimen Thickness on the Optimum Angle of Evaluation / p188 (0194.jp2)
  61. 7.5 Extension of the Calibration Equation for Sub-Wavelength Cracks / p190 (0196.jp2)
  62. 7.6 Evaluation of Closed Cracks and Sensitivity Limit / p193 (0199.jp2)
  63. 7.7 Conclusions / p210 (0216.jp2)
  64. References / p210 (0216.jp2)
  65. CHAPTER8 CONCLUSIONS / p211 (0217.jp2)
  66. ACKNOWLEDGEMENTS / p215 (0221.jp2)
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Codes

  • NII Article ID (NAID)
    500000170861
  • NII Author ID (NRID)
    • 8000000171135
  • DOI(NDL)
  • NDLBibID
    • 000000335175
  • Source
    • NDL ONLINE
    • NDL Digital Collections

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