표제지
목차
國文要略 16
제1장 서론 18
1.1. 연구개요 18
1.2. 선행연구 21
1.3. 연구목표 22
제2장 레이저 가공 기술 및 그 외 가공 기술 23
2.1. 레이저 가공 기술 23
2.2. 그 외 가공 기술 26
2.2.1. 샤링기 26
2.2.2. 와이어 컷팅 27
2.2.3. 워터젯 가공 28
2.2.4. 플라즈마 가공 29
2.2.5. 파이프 레이저 가공 기술 30
제3장 실험계획법 수립 31
3.1. 실험계획법의 정의 31
3.2. 다구찌 실험 방법 32
3.3. 실험장비 스팩 및 시편의 재질, 두께 정리 33
3.4. 파라미터값 정리 34
3.4.1. STS304, Al5052, SPHC의 파라미터값 설정 35
3.5. 다구찌 기법을 통한 실험계획법 수립 37
제4장 실험의 측정 및 결과 분석 방법 41
4.1. 측정방법 41
4.2. 결과 분석 방법 43
4.2.1. 미니탭 통계프로그램 43
4.2.2. SN(Signal to Noise Ratio) 비 48
4.2.3. 산점도와 상관계수 50
4.2.4. 회귀분석 51
4.2.5. 결정계수 R² 52
제5장 실험의 결과 및 분석 53
5.1. STS304 53
5.1.1. STS304(2t) 실험의 결과 및 분석 53
5.1.2. STS304(4t) 실험의 결과 및 분석 63
5.1.3. STS304(6t) 실험의 결과 및 분석 72
5.1.4. STS304 실험결과 및 분석 요약 80
5.1.5. STS304 품질향상, 생산성 향상 및 에너지절감을 위한 가공 변수 예측 86
5.1.6. STS304 품질향상을 위한 재현성 실험 및 결과 87
5.2. Al5052 89
5.2.1. Al5052(2t) 실험의 결과 및 분석 89
5.2.2. Al5052(4t) 실험의 결과 및 분석 97
5.2.3. Al5052(6t) 실험의 결과 및 분석 105
5.2.4. Al5052 실험의 결과 및 분석 요약 113
5.2.5. Al5052 품질향상, 생산성 향상 및 에너지절감을 위한 가공 변수 예측 119
5.2.6. Al5052 품질향상을 위한 재현성 실험 및 결과 120
5.3. SPHC 122
5.3.1. SPHC(4.5t) 실험의 결과 및 분석 122
5.3.2. SPHC(6t) 실험의 결과 및 분석 130
5.3.3. SPHC(9t) 실험의 결과 및 분석 138
5.3.4. SPHC 실험의 결과 및 분석 요약 146
5.3.5. SPHC 품질향상, 생산성 향상 및 에너지절감을 위한 가공변수 예측 152
5.3.6. SPHC 품질향상을 위한 재현성 실험 및 결과 153
제6장 결론 155
References 157
Abstract 167
Table 1. Mechanical Performance 33
Table 2. Experimental Material 33
Table 3. Experimental Conditions of STS304 Material 35
Table 4. Experimental Conditions of Al5052 Material 36
Table 5. Experimental Conditions of SPHC Material 36
Table 6. STS304(2t) Experiment Plan 37
Table 7. STS304(4t) Experiment Plan 37
Table 8. STS304(6t) Experiment Plan 38
Table 9. Al5052(2t) Experiment Plan 38
Table 10. Al5052(4t) Experiment Plan 38
Table 11. Al5052(6t) Experimental Plan 39
Table 12. SPHC(4.5t) Experiment Plan 39
Table 13. SPHC(6t) Experiment Plan 39
Table 14. SPHC(9t) Experiment Plan 40
Table 15. Surface Roughness Measurement Test Result 54
Table 16. SN Ratio Response Table 55
Table 17. Response Table for Values 57
Table 18. Correlation Coefficient R 58
Table 19. Summary Table for Regression 60
Table 20. Surface Roughness Measurement Test Result 64
Table 21. SN Ratio Response Table 65
Table 22. Response Table for Values 67
Table 23. Summary Table for Regression 69
Table 24. Surface Roughness Measurement Test Result 73
Table 25. SN Ratio Response Table 74
Table 26. Response Table for Values 75
Table 27. Summary Table for Regression 77
Table 28. STS304 Test Result 81
Table 29. Parameter Level according to Purpose STS304(6t) 86
Table 30. Reproducibility Test Results STS304(6t) 87
Table 31. Surface Roughness Measurement Test Result 90
Table 32. SN Ratio Response Table 91
Table 33. Response Table for Values 92
Table 34. Summary Table for Regression 95
Table 35. Surface Roughness Measurement Test Result 98
Table 36. SN Ratio Response Table 99
Table 37. Response Table for Values 100
Table 38. Summary Table for Regression 102
Table 39. Surface Roughness Measurement Test Result 106
Table 40. SN Ratio Response Table 107
Table 41. Response Table for Values 108
Table 42. Summary Table for Regression 111
Table 43. Al5052 Test Result 114
Table 44. Parameter Level according to Purpose Al5052(2t) 119
Table 45. Reproducibility Test Results Al5052(2t) 120
Table 46. Surface Roughness Measurement Test Result 123
Table 47. SN Ratio Response Table 124
Table 48. Response Table for Values 126
Table 49. Summary Table for Regression 128
Table 50. Surface Roughness Measurement Test Result 131
Table 51. SN Ratio Response Table 132
Table 52. Response Table for Values 133
Table 53. Summary Table for Regression 135
Table 54. Surface Roughness Measurement Test Result 139
Table 55. SN Ratio Response Table 140
Table 56. Response Table for Values 142
Table 57. Summary Table for Regression 144
Table 58. SPHC Test Result 147
Table 59. Parameter Level according to Purpose SHPC(6t) 152
Table 60. Reproducibility Test Results SPHC(6t) 153
Fig. 1. Laser Processing Equipment 23
Fig. 2. Laser Processing Principle 24
Fig. 3. Fiber Laser Principle 25
Fig. 4. Shearing Machine 26
Fig. 5. Wire Cutting Machine 27
Fig. 6. Waterjet Processing Machine 28
Fig. 7. Plasma Processing Machine 29
Fig. 8. Pipe Processing Machine 30
Fig. 9. Positions of Surface Roughness Measurement 41
Fig. 10. Roughness Meter 42
Fig. 11. Minitab Program Analysis Screen 43
Fig. 12. Minitab Program Input Screen 44
Fig. 13. Minitab Program Analysis Path Screen 44
Fig. 14. Minitab Program Oblivion Trait Selection Screen 45
Fig. 15. Minitab Program Oblivion Trait Graph Screen 45
Fig. 16. Correlation Coefficient Analysis Tab 46
Fig. 17. Correlation Coefficient Confirmation Window 46
Fig. 18. Correlation Coefficient Display Box 47
Fig. 19. SN Ratio Principle 48
Fig. 20. SN Ratio Characteristics 49
Fig. 21. Correlation Coefficient Characteristics 50
Fig. 22. Regression Characteristics 51
Fig. 23. Coefficient of Determination Characteristics 52
Fig. 24. Surface Roughness STS304(2t) Specimens 53
Fig. 25. Surface Roughness Deviation Graph 55
Fig. 26. Main Effects Plot of Signal to Noise Ratio (Data Average) 56
Fig. 27. Main Effects Plot of the Values (Data Average) 57
Fig. 28. Scatter Plot Matrix Graph 58
Fig. 29. Effect of Power on Surface Roughness and Fitted Line 60
Fig. 30. Effect of Cutting Speed on Surface Roughness and Fitted Line 61
Fig. 31. Effect of Nozzle Diameter on Surface Roughness and Fitted Line 62
Fig. 32. Surface Roughness STS304(4t) Specimens 63
Fig. 33. Surface Roughness Deviation Graph 65
Fig. 34. Main Effects Plot of Signal to Noise Ratio (Data Average) 66
Fig. 35. Main Effects Plot of the Mean (Data Average) 68
Fig. 36. Scatter Plot Matrix Graph 68
Fig. 37. Effect of Nozzle Diameter on Surface Roughness and Fitted Line 70
Fig. 38. Effect of Cutting Speed on Surface Roughness and Fitted Line 70
Fig. 39. Effect of Power on Surface Roughness and Fitted Line 71
Fig. 40. Surface Roughness STS304(6t) Specimens 72
Fig. 41. Surface Roughness Deviation Graph 74
Fig. 42. Main Effects Plot of Signal to Noise Ratio (Data Average) 75
Fig. 43. Main Effects Plot of the Mean (Data Average) 76
Fig. 44. Scatter Plot Matrix Graph 77
Fig. 45. Effect of Nozzle Diameter on Surface Roughness and Fitted Line 78
Fig. 46. Effect of Cutting Speed on Surface Roughness and Fitted Line 79
Fig. 47. Effect of Power on Surface Roughness and Fitted Line 79
Fig. 48. Surface Roughness Value by Thickness of STS304 82
Fig. 49. Surface Roughness according to the Main Parameters of STS304(2t) 83
Fig. 50. Surface Roughness according to the Main Parameters of STS304(4t) 84
Fig. 51. Surface Roughness according to the Main Parameters of STS304(6t) 85
Fig. 52. Reproducibility Test Specimen of STS304(6t) 88
Fig. 53. Surface Roughness Al5052(2t) Specimens 89
Fig. 54. Surface Roughness Deviation Graph 91
Fig. 55. Main Effects Plot of Signal to Noise Ratio (Data Average) 92
Fig. 56. Main Effects Plot of the Mean (Data Average) 93
Fig. 57. Scatter Plot Matrix Graph 94
Fig. 58. Effect of Nozzle Diameter on Surface Roughness and Fitted Line 95
Fig. 59. Effect of Cutting Speed on Surface Roughness and Fitted Line 96
Fig. 60. Effect of Power on Surface Roughness and Fitted Line 96
Fig. 61. Surface Roughness Al5052(4t) Specimens 97
Fig. 62. Surface Roughness Deviation Graph 99
Fig. 63. Main Effects Plot of Signal to Noise Ratio (Data Average) 100
Fig. 64. Main Effects Plot of the Mean (Data Average) 101
Fig. 65. Scatter Plot Matrix Graph 102
Fig. 66. Effect of Nozzle Diameter on Surface Roughness and Fitted Line 103
Fig. 67. Effect of Cutting Speed on Surface Roughness and Fitted Line 104
Fig. 68. Effect of Power on Surface Roughness and Fitted Line 104
Fig. 69. Surface Roughness Al5052(6t) Specimens 105
Fig. 70. Surface Roughness Deviation Graph 107
Fig. 71. Main Effects Plot of Signal to Noise Ratio (Data Average) 108
Fig. 72. Main Effects Plot of the Mean (Data Average) 109
Fig. 73. Scatter Plot Matrix Graph 110
Fig. 74. Effect of Nozzle Diameter on Surface Roughness and Fitted Line 111
Fig. 75. Effect of Cutting Speed on Surface Roughness and Fitted Line 112
Fig. 76. Effect of Power on Surface Roughness and Fitted Line 112
Fig. 77. Surface Roughness Value by Thickness of Al5052 115
Fig. 78. Surface Roughness according to the Main Parameters of Al5052(2t) 116
Fig. 79. Surface Roughness according to the Main Parameters of Al5052(4t) 117
Fig. 80. Surface Roughness according to the Main Parameters of Al5052(6t) 118
Fig. 81. Reproducibility Test Specimen of Al5052(2t) 121
Fig. 82. Surface Roughness SPHC(4.5t) Specimens 122
Fig. 83. Surface Roughness Deviation Graph 124
Fig. 84. Main Effects Plot of Signal to Noise Ratio (Data Average) 125
Fig. 85. Main Effects Plot of the Mean (Data Average) 126
Fig. 86. Scatter Plot Matrix Graph 127
Fig. 87. Effect of Nozzle Diameter on Surface Roughness and Fitted Line 128
Fig. 88. Effect of Cutting Speed on Surface Roughness and Fitted Line 129
Fig. 89. Effect of Power on Surface Roughness and Fitted Line 129
Fig. 90. Surface Roughness SPHC(6t) Specimens 130
Fig. 91. Surface Roughness Deviation Graph 132
Fig. 92. Main Effects Plot of Signal to Noise Ratio (Data Average) 133
Fig. 93. Main Effects Plot of the Mean (Data Average) 134
Fig. 94. Scatter Plot Matrix Graph 135
Fig. 95. Effect of Nozzle Diameter on Surface Roughness and Fitted Line 136
Fig. 96. Effect of Cutting Speed on Surface Roughness and Fitted Line 137
Fig. 97. Effect of Power on Surface Roughness and Fitted Line 137
Fig. 98. Surface Roughness SPHC(9t) Specimens 138
Fig. 99. Surface Roughness Deviation Graph 140
Fig. 100. Main Effects Plot of Signal to Noise Ratio (Data Average) 141
Fig. 101. Main Effects Plot of the Mean (Data Average) 142
Fig. 102. Scatter Plot Matrix Graph 143
Fig. 103. Effect of Nozzle Diameter on Surface Roughness and Fitted Line 144
Fig. 104. Effect of Cutting Speed on Surface Roughness and Fitted Line 145
Fig. 105. Effect of Power on Surface Roughness and Fitted Line 145
Fig. 106. Surface Roughness Value by Thickness of SPHC 148
Fig. 107. Surface Roughness according to the Main Parameters of SPHC(4.5t) 149
Fig. 108. Surface Roughness according to the Main Parameters of SPHC(6t) 150
Fig. 109. Surface Roughness according to the Main Parameters of SPHC(9t) 151
Fig. 110. Reproducibility Test Specimen of SPHC(6t) 154