How to measure the ultrasonic velocity in solids?
Best insight from top research papers
To measure the ultrasonic velocity in solids, various techniques and instruments have been developed. One method involves using ultrasonic spectroscopy to simultaneously measure phase velocity and attenuation coefficient of shear waves in a solid at different frequencies, extending the current techniques used for longitudinal waves . Another approach utilizes a constant frequency pulse phase-locked loop instrument to accurately measure sound velocity in condensed matter, analyzing uncertainties and addressing inherent phase shifts within the system . Additionally, a method for determining ultrasonic attenuation and phase velocity in solid insulating materials involves studying pressure pulse propagation in samples subjected to an electric field, providing advantages like broad frequency band information from a single measurement without the need for a transducer .
Answers from top 5 papers
More filters
| Papers (5) | Insight |
|---|---|
27 Citations | Both constant frequency and variable frequency pulse phase-locked loop systems can measure ultrasonic velocity in solids by analyzing phase shifts and utilizing specific instrumentation techniques. |
121 Citations | Measure ultrasonic velocity in solids by applying ultrasonic spectroscopy technique to determine phase velocity and attenuation coefficient of shear waves within a frequency range of 2.2 to 7.6 MHz. |
38 Citations | Measure ultrasonic velocity in solids by studying pressure pulse propagation in a sample under an electric field, generating a current signal for Fourier analysis, providing broad frequency band data accurately. |
| The ultrasonic velocity in solids can be measured by comparing theoretical models with experimental data, focusing on systems with solid spherical inclusions within a solid matrix. | |
16 Citations | To measure ultrasonic velocity in solids, use ultrasonic interferometry by analyzing transmission and reflection coefficient spectra of torsional mode through a viscoelastic sample clamped between rods. |
Related Questions
How ultrasonic sensor is used to measure the distance?5 answersUltrasonic sensors are utilized for distance measurement by emitting ultrasonic waves towards an object and calculating the time taken for the waves to bounce back. These sensors can accurately measure distances up to several meters with millimeter precision. For instance, piezoelectric micromechanical ultrasonic transducers (pMUTs) have been developed with advanced structures and materials to enhance sensing capabilities, achieving distances of up to 6 meters. Additionally, calibration processes are crucial to ensure accurate distance measurements, involving the identification and compensation of delay contributors for precise results. By integrating ultrasonic sensors with microcontrollers and data processing systems, real-time tracking of an object's position and movement direction can be achieved. These advancements in ultrasonic sensor technology pave the way for diverse applications in robotics, automotive, and smart home systems.
How to measure density of solids?5 answersThe density of solids can be measured using various methods. One approach involves using a solid density measuring device that utilizes an electronic sliding platform, an electronic lifting platform, a detection platform, a detection chamber, a pressure transducer, and an electronic balance. Another method involves dropping the solid object into a liquid-filled cavity and measuring the volume using confocal laser microscopy. An electronic solid density measuring device can also be used, which includes an iron stand, a beaker, a pressure sensor, ultrasonic probes, a single chip microcomputer, and an LCD. Additionally, a solid density meter can be employed, which consists of a base, a fixing column, a slide bar, a spring, a balance arm, a gear, and a loading container. Another method involves measuring the mass of the solid sample in air and in a liquid to calculate the volume and density of the sample.
How is the speed of measured?4 answersThe speed of a vehicle can be measured using various methods. One method involves using a speed measurement device that includes sensors placed on the road and a photographing device. Another method uses a speed measuring apparatus with photodetectors arranged along parallel light paths, which provide a signal representing speed. Additionally, a laser beam can be split into two using a beam divider, and the reflected light's intensity modulation is measured to determine speed. Another approach involves acquiring video frames of a vehicle and performing subsequent operations on them to measure speed. Furthermore, a method for measuring speed involves calculating speed based on distance and time measurements, with the time being obtained using a reference signal and phase shift signals.
How to use ultrasonic measurements to determine elastic properties of wood?5 answersUltrasonic measurements can be used to determine the elastic properties of wood by measuring the ultrasonic pulse velocity (UPV). The UPV technique involves propagating an ultrasonic wave through the wood and measuring the velocity of the wave in different directions. By placing sensors on the three main orthogonal directions of the wood, the ultrasound velocity values can be obtained. Based on mathematical relations, the values of elastic parameters such as the modulus of elasticity (MOE) can then be calculated. This method has been applied to different wood species, including Mexican pine, and has been found to provide useful information about the elastic properties of wood. Non-destructive tests like UPV can estimate the strength and grade of wood based on specific gravity, making it a valuable tool for quality evaluations of existing wood structures.
Doppler type Ultrasonic Flow Meters5 answersDoppler type ultrasonic flow meters are devices used to measure the flow rate of fluids in various fluid pipes. They work by emitting ultrasonic waves into the pipe and measuring the flow velocity profile of the fluid using a receiving transducer. The flow rate of the fluid is then calculated based on this velocity profile. These flow meters can automatically select the optimal frequency of the ultrasonic wave to be emitted, ensuring accurate and precise measurements. They are contactless and provide versatile measurement capabilities for different types of fluid pipes.
How does an ultrasonic distance sensor work?5 answersAn ultrasonic distance sensor works by transmitting ultrasound waves and measuring the time it takes for the waves to bounce back after hitting an object. The sensor emits a transmission signal, usually a square wave, with a specific frequency and number of cycles. When the ultrasound waves hit an object, they are reflected back to the sensor. The sensor then receives the ultrasound reception waveform. By analyzing the correlation between the received waveform and a template waveform, the sensor can calculate the distance between itself and the object. Ultrasonic sensors can be used to accurately measure distances within a certain range, typically up to a maximum distance of a few meters. They can also be arranged in a triangular configuration to determine the position and orientation of an object in real time.