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In this paper we propose a novel ultrasonic longitudinal wave resonance method for measuring the thickness of metal walls using a laser-electromagnetic acoustic transducer . During the servicing of flange fasteners, the sealing gasket and the flange cover interface are prone to separation and air contamination due to factors such as stress, corrosion, and vibration. In the detection process, there .In the field of industrial ultrasonic testing, ultrasonic thickness measurement (UTM) is a method of performing non-destructive measurement (gauging) of the local thickness of a solid element (typically made of metal, if using ultrasound testing for industrial purposes) based on the time taken by the ultrasound wave to return to the surface. This type of measurement is . The traditional liquid film thickness measurement by ultrasonic pulse echo method has long been used in many sectors of engineering and is well understood [15], [16]. For very thick liquid layers (the order of mm), this method can determine the film thickness by measuring the time difference between two reflected pulses from the liquid film .
Based on the working principles, ultrasonic thickness measurement methods can be divided mainly into pulse-echo method, Lamb wave method, and resonance method. Pulse-echo method is a widely used thickness measurement method due to its simplicity and forgiving requirements on the smoothness of the material surface. . and EMAT coil parameters . The use of ultrasonic resonance frequency measurements for dimension or elastic modulus determination has become popularly known as resonant ultrasound spectroscopy [15] and Rus and Grosse [16] have pointed out that it is possible to measure the thickness of thinner plates than with time-of-flight measurements at a similar nominal frequency. Resonant Ultrasound Spectroscopy (RUS) is an ultrasound-based minimal-effort high-accuracy elastic modulus measurement technique. RUS as described here uses the mechanical resonances (normal modes of vibration or just modes) of rectangular parallelepiped or cylindrical specimens with a dimension of from a fraction of a millimeter to as large as will fit . Cook [6] described one of the first applications of ultrasonic resonance to make thickness measurements provided the acoustic properties of the membrane are known. . Thickness measurement by ultrasonic resonance. J. Acoust. Soc. Am., 27 (3) (1955), pp. 564-569. Crossref View in Scopus Google Scholar [7]
Ultrasonic methods are based on interfacial reflection, Wang et al. [11] proposed an ultrasonic method named "Ultrasonic Echo Resonance Main Frequency" (UERMF), able to measure the liquid film . Semantic Scholar extracted view of "Thickness measurement via local ultrasonic resonance spectroscopy." by J. Rus et al. Skip to search form Skip to main . , title={Thickness measurement via local ultrasonic resonance spectroscopy.}, author={Janez Rus and Christian Ulrich Grosse}, journal={Ultrasonics}, year={2020}, volume={109}, pages .In this paper we propose a novel ultrasonic longitudinal wave resonance method for measuring the thickness of metal walls using a laser-electromagnetic acoustic transducer (Laser-EMAT). The method is based on the surface constraint mechanism (SCM) of the material and is expected to be capable of acc . An alternative to ultrasonic time-of-flight measurements for thickness determination is to use through-thickness resonance frequency measurements; these frequencies correspond to the cut-off .
Ultrasonic thickness resonance and pulse propagation speed can be effectively used to find the thickness of thin-walled structures present in the skin of aircraft, fluid handling equipment such as .DOI: 10.1016/j.ultras.2024.107340 Corpus ID: 269694564; A novel laser-EMAT ultrasonic longitudinal wave resonance method for wall thickness measurement at high temperatures. @article{Chen2024ANL, title={A novel laser-EMAT ultrasonic longitudinal wave resonance method for wall thickness measurement at high temperatures.}, author={Weiwei Chen and . DOI: 10.1016/J.MEASUREMENT.2019.06.027 Corpus ID: 197433346; A new method for liquid film thickness measurement based on ultrasonic echo resonance technique in gas-liquid flow @article{Wang2019ANM, title={A new method for liquid film thickness measurement based on ultrasonic echo resonance technique in gas-liquid flow}, author={Mi .
The measurement models (eg, resonance, spring, phase, and complex models [9 . where it was possible to compare the ultrasonic film thickness measurements with optical interference methods and .
ultrasonic wall thickness measurement tool
Ultrasonic methods are based on interfacial reflection, Wang et al. [11] proposed an ultrasonic method named "Ultrasonic Echo Resonance Main Frequency" (UERMF), able to measure the liquid film .Request PDF | On May 1, 2024, Weiwei Chen and others published A novel laser-EMAT ultrasonic longitudinal wave resonance method for wall thickness measurement at high temperatures | Find, read and .I. N. Ermolov and M. F. Krakovyak, “Ultrasonic apparatus for thickness gaging,” VINITI, 1957, subject 21, No. 57-36/4. Yu. V. Bogoslovskii, The UZD-4N Ultrasonic .
The oil film thickness in an oil-lubricated tribo-pair can be measured using reflected ultrasonic waves and various transformation models. Conventionally, this approach requires the incident signal to be calibrated using off-line methods prior to testing, and this limits the on-line measurement of oil film thickness in sliding components such as journal bearings. Current film thickness prediction techniques are satisfactory for many bearing design applications. However, for high precision or highly loaded systems a more direct measurement approach is often required [1].For example, the use of environmentally acceptable lubricants (EALs) in marine stern tube bearings has proven challenging, leading to .Ultrasonic instruments which are built to withstand such harsh conditions tend to last longer, increasing their value. Important Software Capabilities for Ultrasonic Thickness Measurement . Intelligent software is required to collect and interpret the results of ultrasonic thickness measurements.Thickness measurement via local ultrasonic resonance spectroscopy Ultrasonics , 0041624X , 109 ( 2021 ) , Article 106261 , 10.1016/j.ultras.2020.106261 View PDF View article View in Scopus Google Scholar
Measurement of the resonant through thickness ultrasonic modes of a homogeneous plate using a fast Fourier transform of the temporal data can be used to calculate plate thickness very accurately. We describe an extension of this principle to two-layer systems, examining a thin coating on a substrate of known properties. The resonant behavior of these .Local ultrasonic resonance spectroscopy (LURS) is a new approach to material inspection, where the specimen is locally excited by a short mechanical impulse while its local mechanical response is recorded at a position nearby. . Keywords: Laser-ultrasonics; Local resonance; Local ultrasonic resonance spectroscopy; Thickness measurement . Key words: aluminum alloy; spectral analysis; ultrasonic resonance; thickness measurement; irregular surface 1 Introduction Nondestructive detection technology is widely used in aviation, aerospace, industry and medical science [1−3]. Ultrasonic inspection and measurement have a great development, as an important nondestructive evaluation .A mathematical analysis made of the acoustic system of resonance‐type instruments used for thickness measurements from one side only. The approach is general and can be used to evaluate any combinations of test sample, couplant, and driving crystal provided their acoustic properties are known.
Birefringence stress measurement with a shear wave EMAT. RESONANCE FREQUENCY AND ACOUSTOELASTICITY LAW The resonance frequency of n-th mode, f , is given by the elastic wave velocity V and the plate thickness d th¥ough f nV/2d. n (1) The acoustic birefringence B, that is, the velocity difference of shear
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ultrasonic resonance thickness measurement|ultrasonic thickness measurement report pdf