FPADS
As we increase this test variable we see improvement in sensitivity and resolution.
Frequency
This property is dependent upon the material but it rears its ugly head more as we increase frequency
attenuation
The words that we say following a fist bump
There is no sound in space (optional - Bro)
If we were to propagate sound across the state it would be fastest through which of the following
air, water, rock, metal
metal
UT is described as sound energy above
20KHz
As frequency goes down this happens to our penetration
Increases / goes up
If I want to hide food from this co worker I simply place it above 5' which greatly impedes his ability to get at it.
Scott
10,000,000hz could also be expressed as
10MHz
In Oregon and other states and nations people use this fantastic law to determine angles of incidence and refraction
Snells
At this key angle, the longitudinal wave is gone and only shear waves exist
1st critical (longitudinal refracted to 90 degrees, leaving only shear wave in the material)
we have two transducers, one 5MHz and one 10MHz which has a longer near field
10 MHz
Bonus: Why? (Bonus points are in the form of a special prize for the team who gets it)
One could simulate the particle motion of this wave type by tying a rope around your friends neck
Shear / Transverse
What is the Z value of water. Density of Water = 1.0 Velocity =0.059"/us
0.059
This fish is ancient, potentially very large and have four whiskers and a toothless mouth and can be caught in the willamette
Sturgeon
The velocity of this wave type is approximately 50% of Compression waves
shear / transverse
Which of the below would provide the longest wavelength?
12MHz
7.5MHz
15MHz
7.5MHz
Particle motion is parallel to the direction of propagation, what is the wave type
longituidnal
The cable which connects the probe to the instrument is called
coaxial. Don't confuse with the connectors on either end. BNC connector at the probe.
Lemo connector at the instrument.
This park would be a great location to take over and install an outdoor immersion inspection system or sytems.
Swanson Park
The angle of incidence is between normal and the first critical, what wave modes are present
Longitudinal and Shear
Crystal Thickness determines this very key parameter.
Frequency
Fresnel and Fraunhauffer are pretty close friends but one always leads the other.....
Fresnel / Near Field
These two characteristics define our ultrasonic test
resolution and sensitivity
He's large, he's friendly, he is my great Dane, what is his full name?
Walter Whitman Milligan
As diameter of an element increases this characteristic decreases
Hint: the property is a part of fpads but diameter is not
Beam spread / divergence