Author
H.C.H. Li
Bio: H.C.H. Li is an academic researcher from RMIT University. The author has contributed to research in topics: Structural health monitoring & Fiber Bragg grating. The author has an hindex of 10, co-authored 13 publications receiving 346 citations.
Papers
More filters
TL;DR: In this article, the structural integrity and damage tolerance of typical composite T-joints found in ships constructed from glass fibre reinforced plastic was investigated using finite element (FE) analysis, which showed that the critical strains were significantly affected by the joint geometry.
74 citations
TL;DR: In this paper, a typical monolithic glass fibre reinforced polymer composite T-joint is modeled and tested for structural health monitoring (SHM) and the performance of embedded optical fiber Bragg sensors in such joints has been shown to be satisfactory and the effects of artificially induced disbonds on the strain distribution have been determined via finite element modelling and have been experimentally verified.
64 citations
TL;DR: In this paper, the fracture behavior of a reinforced polymer T-joint commonly used in composite marine vessels was investigated using the virtual crack closure technique (VCCT) to investigate the fracture behaviour of the structure.
49 citations
TL;DR: In this paper, a methodology for the health monitoring of composite marine joint structures based on strain measurements under operational loading using embedded fibre Bragg grating sensors is described, which enables the sensor measurements to be used for damage detection without reference to a high-fidelity numerical model of the structure which is often difficult and resource intensive to generate.
39 citations
TL;DR: In this article, the effects of chemical or mechanical stripping on the sensor integrity, operating life and damage mechanisms of the fibres when they have not been recoated after producing the Bragg gratings were investigated.
37 citations
Cited by
More filters
TL;DR: This paper provides a tutorial introduction, a comprehensive background on this subject and also a forecast of the future of OFS for SHM, including those from the renewable energy, transportation, civil engineering and the oil and gas industry sectors.
Abstract: Structural Health Monitoring (SHM) can be understood as the integration of sensing and intelligence to enable the structure loading and damage-provoking conditions to be recorded, analyzed, localized, and predicted in such a way that nondestructive testing becomes an integral part of them. In addition, SHM systems can include actuation devices to take proper reaction or correction actions. SHM sensing requirements are very well suited for the application of optical fiber sensors (OFS), in particular, to provide integrated, quasi-distributed or fully distributed technologies. In this tutorial, after a brief introduction of the basic SHM concepts, the main fiber optic techniques available for this application are reviewed, emphasizing the four most successful ones. Then, several examples of the use of OFS in real structures are also addressed, including those from the renewable energy, transportation, civil engineering and the oil and gas industry sectors. Finally, the most relevant current technical challenges and the key sector markets are identified. This paper provides a tutorial introduction, a comprehensive background on this subject and also a forecast of the future of OFS for SHM. In addition, some of the challenges to be faced in the near future are addressed.
609 citations
TL;DR: Structural health monitoring and damage detection techniques are tools of great importance in the off-shore, civil, mechanical and aeronautical engineering communities, both for safety reasons and because of the economic benefits that can result.
Abstract: Structural health monitoring and damage detection techniques are tools of great importance in the off-shore, civil, mechanical and aeronautical engineering communities, both for safety reasons and because of the economic benefits that can result. The need to be able to detect damage in complex structures has led to the development of a vast range of techniques, of which many are based upon structural vibration analysis. In the present article, some of the latest advances in Structural Health Monitoring and Damage Detection are reviewed, with an emphasis on composite structures on the grounds that this class of materials currently has a wide range of engineering applications. FOREWORD-It should be noted that this review is not intended to be a general, all-encompassing review covering the whole range of structural health monitoring (SHM); it was planned as the starting point for a study focusing on damage detection, localization and assessment for certain kinds of structure. Thus, the line of thought behind the search and the structure of this review is a result of objectives beyond the scope of the paper itself. Nevertheless, it was considered that, once the above was understood, an updated synopsis such as this could also be useful for other researchers in the same field. ©2006 SAGE Publications.
468 citations
TL;DR: In this article, the area of structural bonded repair of composites is broadly reviewed, starting from damage assessment to automation, to identify current scientific challenges and future opportunities, and the authors propose a robust, reliable and repeatable structural bond repair procedures to restore damaged composite components.
388 citations
TL;DR: In this paper, the feasibility of using optical fiber sensing technology for marine application is discussed and a review of optical fiber sensors employed for marine environment and marine structural health monitoring are summarized for the understanding of their basic sensing principles.
Abstract: Optical fiber sensors have attracted considerable attention for marine environment and marine structural health monitoring, owing to advantages including resistance to electromagnetic interference, durability under extreme temperature and pressures, light weight, high transmission rate, small size and flexibility. In this paper, the optical fiber sensors employed for marine environment and marine structural health monitoring are summarized for the understanding of their basic sensing principles, and their various sensing applications such as physical parameters, chemical parameters and structural health monitoring. This review paper shows the feasibility of using optical fiber sensing technology for marine application and, due to the aforementioned advantages, it is possible to envisage a widespread use in this research field in the next few years.
184 citations
Patent•
02 Apr 2012
TL;DR: In this article, a coaxial cable sensor device with periodic impedance discontinuities along the length of its cable is described, which can be used to measure temperature, pressure, strain, and acoustic waves in building structures.
Abstract: A coaxial cable sensor device with periodic impedance discontinuities along the length of its cable. The cable comprises an inner conductor, insulating material disposed around the length of the inner conductor, and an outer conductor disposed around the insulating material. The periodic impedance discontinuities are created by physical deformations or material alterations to at least one of the inner conductor, the outer conductor, and the insulating material. The sensor device may be used to measure temperature, pressure, strain, and acoustic waves in building structures, and is well suited for down-hole or underwater applications.
162 citations