Probing the depths of the sea
Frequency, diameter and damping are factors that define
conventional probes
decreasing pitch and element width with a constant number of elements
increases steering
Wedge name that results in a 55 degree shear wave in steel
N55S
Once a focused beam converges to a point it
diverges
They are cake like, they are delicious and I am addicted
what are Zaks choc chip cookies
Their behavior is affected by how individual elements are positioned sized and grouped.
PAUT Probe
Increasing pitch or frequency
creates grating lobes
this is the traditional range of angle that a sound beam can be swept +/-
20 degrees
When element size and or frequency increase this angle decreases
beam spread
For nearfield calculations we use the diameter (D), frequency(F) and velocity(V). With PAUT probes we have to calculate D by multiplying n and p. n and p represent
number of elements in group and pitch
Which of the below apertures has the best inherent steering capability?
32mm aperture
16mm aperture
16, smaller = more angular energy content
increasing element width
creates side lobes and reduces steering
If you drop your keys in molten lava
let them go, they are gone
Beams are focused in this direction and not in this direction
steering / active and not in the passive direction
This Oregon lake receives on average 44' of snowfall per year and is only fully open between july and september
crater
The deepest part of the ocean (name)
challenger deep (end of the Mariana trench (35,876' deep)
increasing active aperture by using many small elements with a small pitch
Increases focusing factor
We will use inches feet and miles except in
certain unpopular sports like track and swimming.
george washingtons dream / SNL / Nate Bargatzee
A larger number of elements with a larger active aperture results in this being sharper
focusing
He's Large, he's in charge
Scott Ballard
This state has the most coast line in miles
CA, FL, AL HI
Alaska with 6,640 miles with over 33,000 miles of shoreline including islands.
this results in better sensitivity, better lateral resolution and lessens the impact of a rough surface
Focusing
Portability Speed and system cost are three advantages of this type of image generation when compared to conventional.
C Scan PAUT
Scotty from Star Trek Job
chief engineer
This is the cleanest lake in Oregon and one of the purest bodies of water in the world, nearly as pure as distilled water
waldo