Reliability analysis and damage detection in high-speed naval craft based on structural health monitoring data

Abstract

Current and future trends in naval craft design are leaning toward the development of high-speed and high-performance vessels. Lack of information on wave-induced loads for these vessels presents a challenge in ensuring their safety that is best tackled with monitoring operational loads and detecting damage via structural health monitoring (SHM) systems. These monitoring systems, however, require efficient statistical and probabilistic procedures that are able to effectively treat the uncertainties inherent in the massive volumes of collected data and provide interpretable information regarding the reliability and condition of the craft structure. In this article, an approach for using SHM data in the reliability analysis and damage detection in high-speed naval craft (HSNC) under uncertainty is presented. This statistical damage detection technique makes use of vector autoregressive modeling for detection and localization of damage in the ship structure. The methodology is illustrated on an HSNC, HSV-2. Data obtained from seakeeping trials of HSV-2 were treated as the SHM data mentioned above.

Fatigue reliability and service life prediction of aluminum naval ship details based on monitoring data

“…Since the effect of this combined load on the fatigue damage accumulation is herein analyzed, it has not been necessary to identify low and high frequency load components. This is in contrast with ultimate load capacity analyses in which the decomposition into low and high frequency loads is essential [13]. However, digital filters have been used herein to remove low amplitude stress cycles [41] has been used.…”

“…In this context, structural health monitoring (SHM) is an important tool for the reduction of uncertainties, providing information on the real-time structural response [13]. For fatigue studies, SHM data can be used for calculating the fluctuating stress levels acting on the details at different operational conditions.…”

Risk-informed life-cycle optimum inspection and maintenance of ship structures considering corrosion and fatigue

“…Ship performance associated with ultimate flexural failure of the hull's mid-ship section is considered as one of the most critical criteria regarding ship safety assessment (Decò et al, 2011(Decò et al, , 2012. The probability of failure and reliability index of ships have been previously investigated by Ayyub et al (2000), Paik and Frieze (2001) and Okasha et al (2011). Reliability-based structural performance indicators reflect the uncertainty in load, resistance, and modeling.…”

“…During the past few decades, the field of ship structural reliability assessment has been developed considerably (Paik and Frieze, 2001;Okasha et al, 2011;Frangopol and Soliman, 2014).…”

Numerical calculation of wing-bending moment with real-time strain monitoring by FBG modulation

“…Structural Health Monitoring (SHM) is significant aspect in large-sized structural component, due to the fatigue failure of mechanical products and the growing use of innovative structural systems and construction materials [1][2][3]. In recent years, the aircraft is moving towards integration and intelligent and higher requirements are put forward for the real-time monitoring of the structure.…”