Model-Based Design of Low Frequency Lamb Wave EMATs for Mode Selectivity

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Optimization of Lamb and Rayleigh Wave Generation Using Wideband-low-frequency Emats

This paper describes a non-contact ElectroMagnetic Acoustic Transducer (EMAT) that can be used to generate both Lamb and Rayleigh waves on metal samples. The generated waves are wideband and low frequency with a dominant frequency content centred on approximately 200kHz extending to around 500kHz. Detection of the waves is achieved using a linear coil detection EMAT. The transducers (generator ...

متن کامل

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

Optimum sliding mode controller design based on skyhook model for nonlinear vehicle vibration model

In this paper a new type of multi-objective differential evolution employing dynamically tunable mutation factor is used to optimally design non-linear vehicle model. In this way, non-dominated sorting algorithm with crowding distance criterion are combined to fuziified mutation differential evolution to construct multi-objective algorithm to solve the problem. In order to achieve fuzzified mut...

متن کامل

Multi-Mode and Multi-Frequency Differential Lamb Wave Imaging with in situ Sparse Transducer Arrays

Application of ultrasonic methods to structural health monitoring requires a compromise between coverage and complexity, making it desirable to use as few transducers as possible to cover the largest area. Such a consideration leads to the use of very sparse arrays where transducers are spatially distributed over a large area and are permanently attached to the structure. For plate-like geometr...

متن کامل

Parameter measurement of thin elastic layers using low-frequency multi-mode ultrasonic lamb waves

A low-frequency ultrasonic method presented in this paper is suitable for measuring any one of the four characteristic parameters, i.e., thickness, density, shear, and longitudinal wave velocities, of a thin elastic layer given the remaining three. Thickness of the thin layer is much smaller than the longitudinal wavelength of the ultrasonic wave used in the experiments. The method employs the ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Journal of Nondestructive Evaluation

سال: 2015

ISSN: 0195-9298,1573-4862

DOI: 10.1007/s10921-015-0296-6