Ultrasonic Testing Jokes

I asked my probe how it stays so calm under pressure.

The angle beam probe never answers a question directly.

I'm a straight beam person in an angle beam world.

The thickness gauge is great in relationships.

The Phased Array Ultrasonic Testing crew is never late.

I trust Time-of-Flight Diffraction with my crack sizing.

The A-scan promised to work on its resolution this year.

The C-scan is the only one in the family who sees the big picture.

I turned the gain down to get rid of the grass.

Nobody in the dead zone ever gets noticed.

I keep my calibration block on a pedestal.

The surface wave probe is the most superficial tool in the kit.

The BNC connector is the most stubborn member of the crew.

Our Level III is a lot like a back wall echo.

The couplant promised it would always fill the gap in my life.

My family group chat works like Ultrasonic Testing.

In the phased array, every element thinks it's the lead.

My probe wedge wore down on one side.

The back wall echo has great self-esteem.

Why did the technician's A-scan look like a lawn?

Why did the straight beam probe turn down the weld job?

What do the dead zone and Monday morning have in common?

Why do Time-of-Flight Diffraction technicians love gossip?

Why did the phased array win the debate?

Why did the thickness gauge never get a raise?

Why did the couplant bottle get nervous at the job site?

Why did the second back wall echo feel like a bad sequel?

Why did the receiver ask the pulser for some space?

Why did the delay line get promoted?

Why does everyone love the C-scan?

Why is steel plate such a good listener?

What is a tilted crack's favorite probe?

Why did the technician bring a bucket of water to the job?

Why do ultrasonic probes make bad secret keepers?

Why was the damping material so well loved?

How do you know a transducer is in love?

In Ultrasonic Testing, good news is a long, boring stretch of nothing between the front wall and the back wall.

The wedge says 70 degrees, and the weld says, 'Prove it.'

Phased Array Ultrasonic Testing: because one beam was never enough to disappoint me.

In Time-of-Flight Diffraction, the lateral wave shows up first, the back wall shows up last, and the cracks only speak up in between.

A thickness gauge never lies. It just rounds.

I trust my instrument completely, right up until the velocity is set for the wrong material.

Couplant always runs out at the exact moment you are farthest from the shop.

An A-scan is a heart monitor for steel, and nobody likes it when the back wall goes flat.

The gain knob has two settings: not enough, and what is all this grass?

Higher frequency sees finer detail and travels less far, which is also how I describe my patience.

A side-drilled hole is the only hole in the shop that is exactly where it's supposed to be.

An A-scan looks perfect right up until the client leans over to look at it.

The probe, the cable, the connector, the battery: an Ultrasonic Testing setup is only as strong as its cheapest link.

Near field is where the beam can't make up its mind: strong, weak, strong, weak.

You might be an Ultrasonic Testing technician if...

You might be an Ultrasonic Testing technician if...

You might be an Ultrasonic Testing technician if...

You might be an Ultrasonic Testing technician if...

You might be an Ultrasonic Testing technician if...

You might be an Ultrasonic Testing technician if...

You might be an Ultrasonic Testing technician if...

You might be an Ultrasonic Testing technician if...

A new technician proudly showed me a perfectly clean scan: no noise, no grass, no indications. 'Nice,' I said. 'Where's the back wall?' He studied the screen, checked the knob, and grinned. 'Either this plate is perfect, or my gain is at zero.'

The client asked why we need couplant. I explained that sound doesn't travel well through air. She nodded, then asked whether a thin film really beats pressing harder. I said it does: pressing harder only wears the probe and tires the thumb, while the film gets you a signal. She asked if she could squeeze the bottle.

My apprentice's thickness gauge said the steel plate was less than half its drawn thickness. He wanted to alert the engineer. I asked what material he had set. 'Whatever was on the screen when I turned it on,' he said. It was acrylic.

At 3 a.m. on a turnaround I realized I'd been finding indications for two hours that moved whenever I rotated the probe. The wedge was cracked. The only discontinuity on the job was in my equipment.

The auditor asked how we know the thickness gauge is accurate. I showed him the step wedge. He asked how we know the step wedge is accurate. I showed him the certificate. He asked who checks the lab. I said the Level III. 'And who checks the Level III?' 'That,' I said, 'is what you're for.'

My mentor handed me a half-inch steel block and said, 'Tell me what's in there.' I scanned for an hour. 'Nothing,' I said. He nodded. 'Good. Now tell me how you know.' That was the longest exam I ever took.

I once ran Time-of-Flight Diffraction on a weld for six hours before noticing the encoder was unplugged. The data was beautiful. It was also one single point, six hours long.

The client watched our Phased Array Ultrasonic Testing setup for forty minutes. 'When does the inspection start?' she asked. 'Forty minutes ago,' said the technician. 'Setup is half the inspection.'

Couplant (n.): A gel that spends all night on the part and all weekend on your jacket.

Back Wall (n.): The one reliable thing on an Ultrasonic Testing screen, and the first to disappear when you need it.

Grass (n.): What grows on the A-scan when nobody mows the gain.

Dead Zone (n.): The area near the surface where discontinuities go to be ignored.

Angle Beam (n.): A probe that reaches the weld root without ever facing it head-on.

Skip Distance (n.): How far the beam travels before it bounces off the back wall. The only skipping allowed in Ultrasonic Testing.

Time-of-Flight Diffraction (n.): A method that ignores the big reflections and listens to the gossip from the crack tips.

Calibration Block (n.): A piece of steel that has been told it is perfect and believes it.

Knock, knock.
Who's there?
Probe.
Probe who?

Knock, knock.
Who's there?
Skip.
Skip who?

Knock, knock.
Who's there?
Wedge.
Wedge who?

Knock, knock.
Who's there?
Shear.
Shear who?

Knock, knock.
Who's there?
Delay.
Delay who?

Knock, knock.
Who's there?
Couplant.
Couplant who?

A technician whose gain was too high
Saw grass growing up to the sky.
He reset to the line
Set by the procedure's design,
And the screen cleared up. Sensible guy.

Gel on the cold steel.
One pulse goes in, one comes back.
The back wall is home.

Signal dies away.
The dead zone keeps its secrets.
Ringdown fades too slow.

A phased array's elements fired
On delays so well timed and inspired
That the beam took a turn
For the flaws it would learn,
Then focused, and never got tired.

There once was a probe running dry
That got not a signal, oh my!
Then a drop of the gel
Made the screen come out well,
And the back wall stood tall in reply.

Corrosion at last.
The gauge reads half what it should.
The weekend is gone.

You must be couplant, because there's no air between us.

Is that a straight beam? Because you always meet me at exactly ninety degrees.

Are you a phased array? Because every part of me is focused on you.

Are you a thickness gauge? Because I lose a little more of my wall every time you get close.

You must be a back wall echo. No matter how far I go, you're the last thing I see.

Ever notice that every Ultrasonic Testing job has exactly one weld you can only reach by lying on your side with the probe in your off hand?

Nobody warns you that the second you finish calibrating, someone asks you to scan something hotter, colder, or thicker.

Ever notice that the back wall is always perfect in training and always missing when the client is watching?

Nobody warns you that Ultrasonic Testing is 5 percent physics and 95 percent finding a flat spot on a part nobody cleaned.

A good joke and an Ultrasonic Testing pulse have a lot in common.

I tried to couple the probe to a dry part.

What's the difference between a transducer and a phone on a turnaround?

Why did the plate fail its Ultrasonic Testing scan?

You might be in NDT sales if you can say 'Phased Array Ultrasonic Testing' in one breath, twice.

Knock knock.
Who's there?
Deliver.
Deliver who?

Are you couplant? Because everything just works better when you're around.

Ever notice the last inch of any scan takes as long as the first ten?

What did the thickness gauge say to the outside of the pipe elbow?

Why is an ultrasonic thickness gauge a good shipmate?

Why is Ultrasonic Testing so good at checking a blade's bond line?

Ultrasonic Testing of a wheel axle is a real turning point in the part's career.

Why did the couplant sit out the winter job?

Regular couplant on a 300 °F pipe isn't couplant anymore. It's a cooking show.

I asked the inspector how the hull plate was doing.

What does a hull plate say after a thickness survey?

An ultrasonic thickness reading is good to a thousandth of an inch. The tide table is good to the minute.

The inspector crawled into the ballast tank and started the thickness survey. By reading forty, every one said 0.312 inch. 'Remarkably consistent plate,' she told the radio. Then she looked down and found the chalk mark she'd made an hour earlier. She had been measuring the same spot.

The rail flaw detection crew says theirs is the only job where being on track is a requirement.

I told the beam it had to follow Snell's law.

Steel and air have the worst impedance mismatch in the shop.

My high-frequency probe and I have a lot in common.

I tried to explain damping to my kids.

A standing wave has a great job.

What did the steel say to the air?

Why did the beam bend as it entered the slower material?

Why does low-frequency sound go the distance?

What did the shear wave say to the longitudinal wave?

Why does sound travel faster in steel than in air?

Why did the beam quit in the coarse-grained casting?

The speed of sound in steel is about 0.23 inches per microsecond, which is roughly how fast bad news travels through a plant.

Anything much smaller than a wavelength is invisible to the beam, which is also how I explain my filing system.

Acoustic impedance is density times velocity, and nearly every disagreement is a mismatch.

You might be an NDT tech if...

At a family dinner someone asked what I do. I said I use sound waves to find cracks in steel. 'So, like a bat?' 'Exactly like a bat,' I said, 'but with more paperwork and fewer insects.'

The instructor asked what happens to sound at a steel-to-air boundary. A student said, 'Almost all of it reflects.' 'Why?' 'Because the air isn't interested.' The instructor wrote that on the board and underlined it.

Acoustic Impedance (n.): A material's resistance to being pushed around by sound, and the reason air gaps get all the reflection and none of the credit.

Knock, knock.
Who's there?
Joule.
Joule who?

Into slower steel
The beam bends toward the normal.
Sines hold the ratio.

Are you Snell's law? Because every time I meet your boundary, I change direction.

Nobody warns you that learning wave physics ruins a quiet room: you start thinking about all the reflections.

Ever notice that the velocity of sound in steel is the one number every technician remembers and the one number nobody writes on the report?

I trust my reference block completely. It's the standard I hold myself to.

Couplant and I have a lot in common. We both smooth things over.

Running out of couplant is the most slippery slope in the field.

The wedge's attitude was the problem. It was always at an angle.

The reference block never apologizes for its flaws.

Why was the calibration block so calm during the audit?

Why did the couplant bottle look so tired at the end of the shift?

Why did the ultrasonic probe sign up for night classes?

The instrument passed calibration this morning. By lunch it was a different instrument, which is why we check it again.

A reference block weighs three pounds in the shop and forty on the third level of scaffold.

The day couplant matters most is the day the bottle has one last squeeze left.

The technician spent twenty minutes tracing a missing signal through the instrument, the cable, the connector and the probe. Then someone asked whether the cable was plugged in. It was plugged into the wrong port. She moved it and the signal came back. 'Twenty minutes of electronics,' she said, 'and the fix was one inch of cable.'

Reference Block (n.): The only piece of steel on site whose flaws were ordered in advance.

Couplant (n.): The only thing in the field that is applied liberally and still runs out.

Are you a calibration block? Because I'm only sure about everything else once I've checked it against you.

Are you the back wall? Because every time I send something your way, I get a strong response.

Why was the lamination so quiet?

The inspector found a lamination in the incoming plate. The receiving clerk checked the order. 'It says one plate.' 'It's two,' said the inspector. 'They just aren't speaking.'

Are you a lamination? Because I know there's more to you than the surface.

Why did the Level II study Snell's law the night before the exam?

Inspection: two hours. Report: two days. Turns out time-of-flight is only fast for the sound.

Why did the technician pack a gallon of couplant for a two-hour job?

You might be a field technician if your truck holds more couplant than your kitchen holds groceries.

Why did the high-strength bolt always win at tug-of-war?

Couplant, Winter Edition (n.): A gel that has decided to be a solid until further notice.

Why did the high-temperature transducer get promoted?

Noon sun on the tank,
the couplant is running off.
So is my patience.

Ever notice that sound slows down in hot steel, and so does everyone standing next to it?

The booth demo was so good I went back for a second look. Excellent repeatability.

Networking is couplant for careers: it fills the gap so the signal can pass between people.

Why did the demo work perfectly?

Mile marker one-ten.
Flaw marked, window closing fast.
Train horn: time to clear.