BUST OUT YOUR CALCULATOR

Question 1

What is the smallest reliably detectable discontinuity when using a 5 MHz Tx?

Steel Velocity = 3.24 mm/ms

Answer 1

ANS: .324 mm

Question 2

Convert the following Velocity to metric

Steel Shear Velocity = 127,000 in/sec

Answer 2

= 3,225,800 mm/sec

= 3.2258 x (10)6 mm/s

Question 3

Convert the following Velocity to metric

Steel Longitudinal Velocity
= 0.232 x (10)6 in/sec

Answer 3

= 5.89 x (10)6 mm/s
OR
= 5.89 mm/microsecond

Question 4

Convert 1 inch into millimeters

Answer 4

25.4 mm

Question 5

Name the following equation:

Sin<1 Vel1
______ = _____
Sin<2. Vel2

Answer 5

SNELL’S LAW

Question 6

What is Snell’s Law used to calculate

Answer 6

ANGULAR RELATIONSHIPS

Question 7

Calculate the SPD to the bottom (ID) of 0.500” T material using 70*

Answer 7

SPD=1.46”

Question 8

Calculate the full-skip V-path of 0.375”T mat’l using 45*

Answer 8

SPD=1.06”

Question 9

Depth divided WHAT??? EQUALS ANGULAR SOUND PATH DISTANCE (SPD)

Answer 9

ANGLE COSINE

Question 10

Sound Path Distance x ANGLE Sin = What?

Answer 10

SURFACE DISTANCE (SD)