ASNT Level III- Visual & Optical Testing

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FIGURE 58. Comparison of optical microscopy to scanning electron microscopy in the documentation of a replicated microstructure; evidence of creep damage is visible in the grain boundaries; etchant is aqua regia; 100 x original magnification: (a) optical microscope image and (b) scanning electron microscope image Charlie Chong/ Fion Zhang
FIGURE 59. Documentation of creep damage: (al a weld viewed originally at 500 x in an optical microscope; the microstructure consists of an austenitic matrix, precipitated nitrides and carbides; linked creep voids can be observed; and lb) the alloy in Fig. 58 viewed originally at 1,000 x in a scanning electron microscope; grain boundary carbides, creep voids and particles believed to be nitrides can be observed in the matrix Charlie Chong/ Fion Zhang
Page 1 and 2: ASNT Level III- Visual & Optical Te
Page 3 and 4: At works Charlie Chong/ Fion Zhang
Page 5 and 6: Charlie Chong/ Fion Zhang Fion Zhan
Page 7 and 8: SECTION 4: BASIC AIDS AND ACCESSORI
Page 9 and 10: PART 4: MACHINE VISION TECHNOLOGY 4
Page 11 and 12: PART 6: TEMPERATURE INDICATING MATE
Page 13 and 14: PART 4: MACHINE VISION TECHNOLOGY 1
Page 15 and 16: 5.1 Cellulose Acetate Replication A
Page 17 and 18: 5.1.2 Fracture Surface Analysis The
Page 19 and 20: Replicas, in the as-stripped condit
Page 21 and 22: Microstructural replication is done
Page 23 and 24: If analysis with the scanning elect
Page 25 and 26: Sputter deposition is a physical va
Page 27 and 28: Sputtering http://en.wikipedia.org/
Page 29 and 30: Sputtering http://clearmetalsinc.co
Page 31 and 32: Sputter Deposition Charlie Chong/ F
Page 33 and 34: 5.1.4 Strain Replication The replic
Page 35 and 36: FIGURE 56. Principles of acetate ta
Page 37: Fatigue striations Charlie Chong/ F
Page 41 and 42: FIGURE 60. Documentation of stress
Page 43 and 44: TABLE 14. Action required for creep
Page 45 and 46: Cellulose Acetate Replication http:
Page 47 and 48: Replication Microscopy Techniques f
Page 49 and 50: Replication Microscopy Techniques f
Page 51 and 52: 5.2.1 Use of Silicone Replicating M
Page 53 and 54: FIGURE 63. Silicon replicas used to
Page 55 and 56: Brittle Failure Chevron Marking Cha
Page 57 and 58: PART 6: TEMPERATURE INDICATING MATE
Page 59 and 60: Temperature indicating sticks were
Page 61 and 62: Levels of Charlie Chong/ Fion Zhang
Page 63 and 64: 6.2 Certification of Temperature In
Page 65 and 66: 6.3 Applications for Temperature In
Page 67 and 68: 6.3.2 Verifying Oven Temperatures T
Page 69 and 70: 6.3.4 Process Control Applications
Page 71 and 72: 6.3.6 Precise Post forming Heat Con
Page 73 and 74: Another example of handforrning is
Page 75 and 76: 6.3.7 Pipeline Coatings Epoxy powde
Page 77 and 78: The most common use for temperature
Page 79 and 80: FIGURE 67. Temperature indicating s
Page 81 and 82: PART 7: CHEMICAL AIDS 7.0 General T
Page 83 and 84: 7.1 Test Object Selection Figure 68
Page 85 and 86: 7.2 Surface Preparation Preparation
Page 87 and 88: 7.2.2 Removing Rust and Scale Rust
Page 89 and 90:
If the required finish cannot be ac
Page 91 and 92:
FIGURE 70. Example of contrast reve
Page 93 and 94:
7.3.2 Safety Precautions Etchants a
Page 95 and 96:
Etchant Safety Charlie Chong/ Fion
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Etchant Safety Charlie Chong/ Fion
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7.3.3 Containers Containers used wi
Page 101 and 102:
1. add the acid or alkali to the wa
Page 103 and 104:
7.3.6 Disposal Before disposing of
Page 105 and 106:
7.4.2 Swabbing Etching may also be
Page 107 and 108:
7.4.4 Test Object Preservation Rins
Page 109 and 110:
7.5 Conclusion Visual testing is pe
Page 111 and 112:
Cellulose Replica Sheets Charlie Ch
Page 113:
Charlie Chong/ Fion Zhang
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ASNT Level III- Visual & Optical Testing

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