Questions tagged [ultrasound]

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Relationship between particle size and wave parameters in acoustic levitation

Can you tell me in acoustic (ultrasonic) levitation if a relationship between the acoustic sound wave parameters (frequency or amplitude or other) and the particle size that can be levitated is known? ...
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I don't understand a simulation result of frequency vibration analysis of ultrasonic tranducer

I am building a ultrasonic transducer like this (with double-exponential (75%-25%) match and 2 ring PZT8 50x20x6.5 (for the moment I do not take account of pre-stress on bolt) : When I simulate the 2 ...
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18 views

Is it possible to set up an ultrasonic range-finding system using a separate transmitter and receiver across 30m distance?

I need to set up a system capable of detecting the distance between an object moving further away and an anchor point. This object would be traveling through a slightly curved tunnel (of 1m diameter), ...
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27 views

Effect of wind on ultrasound sensor

For example, if I have an ultrasoundsensor 1 m above the ground while there is a wind speed of 5 m/s, a rough estimate of the horizontal displacement of the beam would be $$ t \approx 2 \frac{1}{343} =...
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1answer
34 views

Can I use a water-based ultrasound-cleaner with oil?

I'd like to clean my bicycle chain with as little effort as possible, so I thought an ultra-sound cleaner would be best. Professional oil-based ultrasound cleaners are way too expensive for a hobbyist,...
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Is it possible to silver solder a reliable grounding connection to a stainless steel ultrasonic cleaner tank?

My ultrasonic cleaner has a stainless steel tank with a threaded grounding stud for fastening a mains earth wire. I tried to tighten nut that fastens the ground terminal to the stud, but the stud ...
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1answer
57 views

High frequency ultrasound effects on viruses and bacteria

Might anyone have any clue on how high frequency ultrasound have effect on killing viruses and bacteria on surfaces (GHz/MHz)? There have been a few articles online that say ultrasound has effect on ...
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5answers
118 views

What sensors/methods can be used from the roadside to determine if a truck is loaded or empty - without weighing it?

What sensor, using what physical principle, can penetrate a closed rectangular object like the trailer of a truck and tell if the space is empty or loaded? Why is this question relevant? One of the ...
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4answers
60 views

small relatively inexpensive crack detection apparatus for bike shops

Is there a relatively inexpensive (let's say under $500US) crack-detection device and related mobile app that would be easy enough for a non-engineer/non-metallurgist to use to determine whether a ...
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34 views

What's the best way to get an ultrasonic sensor that can vary its operating frequency

Long story short I'm looking to build an ultrasonic sensor that can also be used to communicate with a seperate sensor. (So it must be able to send out a pitch around ~42kHz, but also alter the pitch ...
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1answer
124 views

Is there a difference between piezo ceramic disc transducer and a piezo ceramic bender

I really do apologise if this is a stupid question but I for the life of me can't find an answer. I need to do a project where I measure the liquid of water in a tank using ultrasound and am planning ...
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2answers
77 views

How to measure and verify ultrasound frequency and intensity from a cheap ultrasonic body contouring device?

Research shows that applying 1 MHz non-focused ultrasound at 3 W/cm2 may reduce subcutaneous fat thickness. In fact, high-end and expensive (costs $5000 >) HIFU ultrasonic transducers are now being ...
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1answer
55 views

Measuring intensity of a radio wave reflected from a metal plate

I am building a Project that can pinpoint location of a pen or any object (something as small as 0.5 mm radius sphere) placed on a flat screen. I am using a ultrasound sensor (initially but i can ...
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How to create a 3D model of a person's veins using ultrasound?

How to create a 3D model of a person's veins using ultrasound? How to do something like this, CARTOSOUND® Module: This 3D ultrasound technology gives you all the benefits of traditional ...
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1answer
93 views

Is it possible to calculate the shear wave velocity in lab using ultrasonic test?

I have an ultrasonic testing equipment that can only measure the direct and semi-direct ( (a) and (b) in the image below): I can measure compression wave velocities fairly easily, but I would like to ...
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2answers
238 views

What materials that can contain water and ultrasound wave can go through [closed]

Currently, I'm studying about Ultrasound wave. My aim is set up a system that ultrasound wave can go through ( not reflect and not absorb ultrasound wave). Besides that, this material can contain ...
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104 views

Measuring flow of polyol with ultrasonic flow meter

Our company is installing flow meters on an old polyurethane foam machine. After some research, ultrasonic flow meters were chosen as they have no moving parts and are easy to clean. Polyurethane ...
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1answer
369 views

What is the best resolution obtainable by ultrasonic non destructive testing?

What is the best resolution obtainable by ultrasonic non destructive testing? I understand it depends on frequency.
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78 views

What is the smallest flaw that can be detected by ultrasonic technology?

Ultrasonic transducer is used to detect flaws. What is the smallest flaw that can be detected by ultrasonic technology? One thing I know is that higher the frequency, higher is the sensitivity of the ...
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1answer
211 views

Can ultrasonic sound pass through solid medium?

For my electronic project, I have been searching the internet for a non invasive flow meter that does not require disassembly. I have found an ultrasonic measurement technique that use the clamp on ...