Piezoelectric wafer active sensor embedded ultrasonics in beams and plates

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

Piezoelectric Wafer Active Sensor Embedded Ultrasonics in Beams and Plates

In this paper we present the results of a systematic theoretical and experimental investigation of the fundamental aspects of using piezoelectric wafer active sensors (PWASs) to achieve embedded ultrasonics in thin-gage beam and plate structures. This investigation opens the path for systematic application of PWASs for in situ health monitoring. After a comprehensive review of the literature, w...

متن کامل

Embedded Ultrasonics NDE with Piezoelectric Wafer Active Sensors

The use of piezoelectric wafer active sensors (PWAS) for embedded ultrasonic nondestructive evaluation (NDE) is described. PWAS structure and principle of operation are presented. The interaction between PWAS and ultrasonic Lamb waves is modeled and analyzed, and excitation “sweet spots” for preferentially exciting certain Lamb wave modes are identified. Recent trends in guided-wave ultrasonic ...

متن کامل

Piezoelectric Wafer Active Sensors (pwas) for Structural Health Monitoring and Embedded Ultrasonics

The capabilities of embedded piezoelectric wafer active sensors (PWAS) to perform insitu ultrasonics for active structural health monitoring (SHM) and nondestructive evaluation (NDE) are explored. The paper shows that PWAS, though low-power, lightweight, and small, can successfully perform Lamb wave transmission and reception, pitch-catch and pulse-echo, as well as large area scanning using the...

متن کامل

Embedded Ultrasonics with Piezoelectric Wafer Active Sensors for Structural Health Monitoring of Thin-wall Structures

The capability of embedded piezoelectric wafer active sensors (PWAS) to perform in-situ ultrasonic nondestructive evaluation (NDE) is explored. Laboratory tests are used to prove that PWAS can satisfactorily perform Lamb wave transmission and reception. Subsequently, pulse-echo method for crack detection in an aircraft panel is illustrated. For large area scanning, a PWAS phased array is used t...

متن کامل

Guided Wave Piezoelectric Wafer Active Sensor Arrays For Damage Detection

The paper describes an in-situ method for damage detection using phased arrays of piezoelectric wafers active sensors (PWAS) that are permanently attached to the structure. The method uses scanning beams of guided waves that can travel at large distances with little energy loss and hence permit the interrogation of large structural areas from a single location. The novelty of the present method...

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: Experimental Mechanics

سال: 2003

ISSN: 0014-4851,1741-2765

DOI: 10.1007/bf02411348