Such sound beams follow many of the physical rules of optics and thus can be reflected, refracted, diffracted and absorbed (when non-elastic materials are involved). At frequencies above 100 kilohertz (100KHz or 0.1MHz), sound energy can be formed into beams, similar to that of light, and thus can be scanned throughout a material, not unlike that of a flashlight used in a darkened room. At ultrasonic frequencies 20KHz (above 20,000 Hertz ), sound propagates well through most elastic or near-elastic solids and liquids, particularly those with low viscosities.
The ease with which the sound travels, however, is dependent upon the detailed nature of the material and the pitch (frequency) of the sound. Chapter 1 Review Questionsġ.0 Sound is the propagation of mechanical energy (vibrations) through solids, liquids and gases. Ultrasonic Inspection Results Form Review Questions for a Representative Procedure for Ultrasonic Appendix B - List of Materials, Velocities, and Impedances Appendix C - Answer Key to Chapter Review Questions 113 Appendix D - References Charlie Chong/ Fion ZhangĬontents Chapter 1 - Physical Principles 1.
Ultrasonic Testing Technique Sheet Form B. Flaw Sizing Techniques Charlie Chong/ Fion ZhangĪppendix A - A Representative Procedure for Ultrasonic Weld Inspection Form A.
SSUSH STANDARD NOTES CODE
Chapter 5 Review Questions Typical Approaches Summaries of Requirements ASTM Excerpts Taken from ASTM A609 ASME Excerpts Taken from ASME Boiler and Pressure Vessel Code Military Standards Excerpts Taken from MIL-STD-2154 Building Codes Charlie Chong/ Fion ZhangĬhapter 6 - Special Topics 1. Excerpts Taken from a Representative Building Code 11. Chapter 4 Review Questions Charlie Chong/ Fion ZhangĬhapter 5 - Codes and Standards 1. Chapter 3 Review Questions Charlie Chong/ Fion ZhangĬhapter 4 - Practical Considerations 1. Chapter 2 Review Questions Charlie Chong/ Fion ZhangĬhapter 3 - Common Practices 1. Chapter 1 Review Questions Charlie Chong/ Fion ZhangĬhapter 2 – Equipment 1. Numerical Prefix Micro - (µ) a prefix in the SI and other systems of units denoting a factor of 10-6(one millionth) Nano - a prefix in the SI and other systems of units denoting a factor of 10-9 (one billionth) Pico - a prefix in the International System of Units (SI) denoting a factor of 10-12Ĭontents Chapter 1 - Physical Principles 1. Preparatory Notes for My ASNT NDT Level III Examination - Ultrasonic Testing, UT Reading Two- Part 1 My pre-exam self study note - 2014 Charlie Chong/ Fion Zhang
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