Application of Smart Structures to Aircraft Health Monitoring

Hickman, Granger; Gerardi, J. J.; Feng, Yuanhua

doi:10.1177/1045389x9100200308

Cited by 32 publications

(9 citation statements)

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“…Boeing's ideas of implementing SHM go back to the early concepts proposed by Hickman et al in the early 1990s [4]. After a period of wider exploration, the Boeing Commercial Airplane Company began a collaboration with Delta Airlines to evaluate and flight test several SHM technologies in 1998.…”

Section: Aircraft Oem and Operator Developmental Effortsmentioning

confidence: 99%

History ofSHMfor Commercial Transport Aircraft

Ikegami

Boller

2008

Encyclopedia of Structural Health Monitoring

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For the commercial transport aircraft industry, structural health monitoring (SHM) is a relatively new technology, and significant effort is required to define, develop, validate, and certify SHM systems for specific structural applications. Additionally, the systems must be demonstrated to be reliable over an aircraft service life of 30 years with low maintenance costs. This article describes some of the past activities on the part of commercial aircraft original equipment manufacturers (OEMs), the aircraft operators, and SHM equipment suppliers to evaluate, develop, and certify SHM technologies for potential application to new commercial aircraft designs and the aging commercial aircraft fleet currently in service.

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Section: Aircraft Oem and Operator Developmental Effortsmentioning

confidence: 99%

History ofSHMfor Commercial Transport Aircraft

Ikegami

Boller

2008

Encyclopedia of Structural Health Monitoring

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“…The first SHM systems consisted of simple instrumentation. With development in sensor and signal processor technology, SHM systems based on these techniques were capable of detecting the structural health of aircrafts and with the help of a preventive maintenance system greatly extended the lifetime of aircrafts [Hickman et al 1991]. In 1998, a coordination was achieved between universities, government agencies, and industry, and an innovative SHM assessment method for the overall structural condition of structures was proposed by incorporating the basic concept of system identification [Aktan et al 1998].…”

Section: Introductionmentioning

confidence: 99%

Implementation of a bio-inspired two-mode structural health monitoring system

Lin¹,

et al. 2011

Smart Structures and Systems

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A bio-inspired two-mode structural health monitoring (SHM) system based on the Naïve Bayes (NB) classification method is discussed in this paper. For the micro-vibration mode, a two-tier auto-regression with exogenous (AR-ARX) process is used to extract the expression array from the recorded structural time history while an ARX process is applied for the analysis of the earthquake mode. The health condition of the structure is then determined using the NB classification method. To verify the performance and reliability of the SHM algorithm, a downscaled eight-storey steel building was used as the benchmark structure. The structural response from different damage levels and locations was collected and incorporated in the database to aid the structural health monitoring process. Preliminary verification has demonstrated that the structure health condition can be precisely detected by the proposed algorithm. To implement the developed SHM system in a practical application, a SHM prototype was developed, which consists of three separate modules namely, the input sensing module, the transmission module, and the SHM platform. The vibration data is first measured by the deployed sensor, and subsequently the SHM mode corresponding to the desired excitation is chosen automatically to quickly evaluate the health condition of the structure. Test results from the ambient vibration and shaking table test showed that the condition and location of the benchmark structure damage can be successfully detected by the proposed SHM prototype system, and the information is instantaneously transmitted to a remote server to facilitate real-time monitoring. Implementing the bio-inspired two-mode SHM practically has been successfully demonstrated.

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“…Thus, integrating monitoring devices, such as sensors either surface-mounted on or embedded in the structures is compulsory in these circumstances [2]. A structural health monitoring (SHM) system with built-in sensors has attracted much attention in the past decade [3][4][5]. Recently, sensors with on-board processing capabilities with wireless networks, hence called smart sensors, are being investigated [6].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study Applying a Migration Technique in Structural Health Monitoring

Lin

Fang

2005

Structural Health Monitoring

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This article presents the experimental results of adopting a geophysical migration technique to interpret the ultrasonic flexural wave signals for the purpose of realizing quantitative damage identification in structures. In this study, a homogeneous isotropic plate is examined with a surface-mounted linear array of piezoelectric ceramic (PZT) disk. The piezoelectric disks function as actuators to excite flexural waves and also as sensors to receive the waves scattered from the structural damage in the plate. A prestack reverse-time migration technique, which is an advanced technique in geophysics to reverse the reflection wavefield and to image the Earth’s interior, is then used to back-propagate the scattering waves and to image damage in the plate. The configuration of the experimental setup is presented and its capability of accurately generating and receiving flexural waves is validated by comparing the collected signals with an analytical solution of transient response of a narrowband signal in a piezoelectric sensor/actuator integrated plate using Mindlin plate theory. Finally, the migration results from the scattering waves of an artificial damage are presented. It is shown that the existence of the damage is correctly revealed through migration process in the experiment as it has been shown using synthetic data.

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Application of Smart Structures to Aircraft Health Monitoring

Cited by 32 publications

References 0 publications

History ofSHMfor Commercial Transport Aircraft

History ofSHMfor Commercial Transport Aircraft

Implementation of a bio-inspired two-mode structural health monitoring system

Experimental Study Applying a Migration Technique in Structural Health Monitoring

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