Can ultrasound measure stress? Thank you

Ultrasonic waves are mechanical waves, and the presence of stress will affect the sound field, and the condition of stress can be known by detecting changes in sound field parameters.

It is easy to measure unidirectional stress with ultrasound, but it is basically impractical to measure three-dimensional stress.

Ultrasonic can measure stress, and our company has ultrasonic stress measurement and stress treatment equipment.

Absolutely, acoustic elasticity technology.

I didn't hear that it can be measured, but I heard that it can relieve stress.

Even without walls, ultrasound cannot measure human body temperature.

The human body emits infrared light waves with a wavelength of 10 to 14 microns, and does not emit ultrasound, which is a mechanical wave.

If ultrasound is used to shoot at the human body, the wavelength and intensity of the reflected wave will not change with the temperature of the human body, but only the angle, shape, and surface mechanical properties of the reflecting surface of the human body.

No! The temperature is hot, and ultrasound is mechanical vibration! There's no way to get in touch!

Ultrasound can measure distance! Measure the human body's ultrasound!

Yes, because objects have different reflection and absorption properties at different temperatures.

Theory is possible. But the partition wall can't do it now

There is a direction called ultrasound infrared, you can look it up.

Absolutely not! It's infrared that measures the temperature!

Can ultrasound test for stress? Looks like you can only test the strain, right? I don't know the specifics, ultrasonic is generally used in the field of mechanics for non-destructive detection of material defects...

Both ultrasonic impact and Howker aging are used to relieve welding stress. However, the ultrasonic impact energy is small and the output is unstable, so in the process of using the equipment, one part of the product may be treated well, and the other part may be treated poorly, which is not easy to control, and it is easy to lead to the generation of some waste products. Hawke energy aging, high frequency, high energy, good focus, stable performance, completely eliminate welding stress, and produce ideal compressive stress.

The timeliness is 90%-100%. At present, only Shandong Huayun has this kind of equipment.

It seems that you don't understand the principle of mechanical aging, which is vibrational and requires resonance to homogenize stress. He has nothing to do with ultrasound, the essence of ultrasonic is high-frequency sound waves, which is not the same thing as mechanical aging. They could fool you!

Medical imaging, measuring width or length, depth1

Ultrasonic is a sound wave with a frequency higher than 20,000 Hz, which has good directionality, strong penetrating ability, easy to obtain more concentrated sound energy, and has a long propagation distance in water, which can be used for distance measurement, speed measurement, cleaning, welding, stone crushing, sterilization and disinfection, etc. There are many applications in medicine, military, industry, and agriculture. Ultrasound gets its name from the fact that its lower limit of frequency is approximately equal to the upper limit of a person's hearing.

Ultrasonic stress testing is not very mature now, the most accurate test results at this stage is the blind hole stress testing equipment, Huayun's HK series stress detector meets the national standards for stress testing, and the qualification is complete.

The load energy with ultrasonic waves is relatively large.

It is somewhat destructive.

Low-dose ultrasound is a potential carcinogenic and teratogenic factor, and different frequencies and different sound intensities are harmful to different individuals. Because ultrasonic waves have a strong ability to penetrate solids and liquids, when the energy is large, it can make the particles of matter vibrate at high frequency, and part of the energy can also be converted into heat energy, so that the local temperature rises. When high-intensity pulsed ultrasound waves propagate in a liquid containing small bubbles in the micron range, they can cause the bubbles to shrink, expand, and even violently**, a phenomenon known as cavitation.

Not long ago, the famous American ultrabiophysicist Carlson pointed out that the maximum output intensity of ultrasound imaging diagnostic instruments used in some clinics has reached 1 kilowatt square centimeter, which is enough to cause transient cavitation of organisms. For organisms, cells near the bubble will be damaged during transient cavitation, and in general, in most organs and biological fluids in the human body, damage to a small number of cells will not cause harm to the human body.