NDLI: Study of the effect of angle errors in conical ultrasonic sensors

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Study of the effect of angle errors in conical ultrasonic sensors

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IET Signal Processing

IET Wireless Sensor Systems

Micro & Nano Letters

The Journal of Engineering

Study of the effect of angle errors in conical ultrasonic sensors

Content Provider	IET Digital Library
Author	Álvarez, Javier García Hernández, Miguel J. García Chávez, Juan A. Turó, Antoni Salazar, Jordi
Abstract	Many ultrasonic sensors intended for non-destructive testing include a plastic or metal element, known as buffer rod, between the ultrasonic transducer and the material under analysis. Buffer rods are often terminated in the form of a conical tip for ultrasonic inspection of liquid-like substances. The conical tip is carefully shaped in a 45° angle to favour the in phase reception of all the components of the ultrasonic wave reflected at the buffer tip, obtaining thus a maximum amplitude measurement signal. The effect of the buffer rod cone angle on measurement signals is studied in this work. A straightforward approximate formula for the effect of the error angle on measurement signal amplitude is used. Simulations are performed using a two-dimensional finite differences tool. Measurements are conducted with the same operating conditions and buffer rod materials and dimensions as those defined for both approximate formula evaluation and simulations. Thus, a comparison of the approximate formula, simulation and measurement results are established. Furthermore, the significance of some parameters such as ultrasonic transducer operating frequency and diameter, and buffer rod material are also analysed. The obtained results show that significant loss of the measurement signal amplitude is found only for cone error angles beyond the range of usual machining errors.
Starting Page	265
Ending Page	273
Page Count	9
ISSN	17518822
Volume Number	7
e-ISSN	17518830
Issue Number	Issue 5, Sep (2013)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-smt/7/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-smt.2012.0141
Journal	IET Science, Measurement & Technology
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Angular Measurement Approximate Formula Evaluation Approximation Theory Buffer Rod Cone Angle Error Effect Conical Tip Conical Ultrasonic Sensor Device For The Generation And Reproduction of Sound Inspection Inspection And Quality Control Interpolation And Function Approximation Liquid-like Substance Machining Error Material Testing Material under Analysis Maximum Amplitude Measurement Signal Measurement by Acoustic Technique Metal Element Nondestructive Testing Nondestructive Testing: Acoustic Method Numerical Analysis Numerical Approximation And Analysis Phase Reception Plastic Element Sonic And Ultrasonic Application Sonic And Ultrasonic Transducers Spatial Variables Measurement Transduction Two-dimensional Finite Difference Tool Ultrasonic Inspection Ultrasonic Machining Ultrasonic Material Testing Ultrasonic Measurement Ultrasonic Reflection Ultrasonic Transducer Ultrasonic Transducers Ultrasonic Wave Reflection
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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