Corrosion monitoring systems for structures in extreme marine environments

极端海洋环境中结构的腐蚀监测系统

• 批准号: EP/D030269/1
• 负责人: Tong Sun
• 金额: $ 30.98万
• 依托单位: City, University of London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2006
• 资助国家: 英国
• 起止时间: 2006 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FD030269%2F1
• 关键词: Corrosion; monitoring; systems; structures; extreme

Structures in the marine context are exposed to an extremely aggressive environment. Serious risks arise to marine structures through a combination of chemical, biological, and physical actions, which may result in significant costs of ownership and use. These are not just at the level of millions of pounds annually for repair, rehabilitation, and replacement, but also for 'cleaning-up' the contamination that would inevitably arise from failure. Seawater contains a wide variety of dissolved inorganic material, of which the chloride ion in particular significantly influences the corrosion of marine structures. In the atmospheric exposure zone, air-borne chlorides are major factors responsible for the corrosion of the concrete structures. In the splash zone, chlorides, waves and tides make a major impact on the degree of corrosion experienced through both chemical and direct velocity effects from ocean currents. Wave loading on structures can be highly destructive, particularly during storms, combining as it does with loading from extreme wave action and high winds. In the tidal zone, chlorides and the growth of bio-organisms together play an important role in promoting the progression of corrosion effects as, for example, organisms can grow on the surface of concrete, and this may lead to microbial disintegration of concrete itself. In the submerged area in addition to chlorides, the physical characteristics of the seafloor sediments can affect the deterioration of concrete; for example, the grain size and packing factors of the sediments affect diffusion through the sediments which has a major impact on the availability of oxygen and other corrosive agents. Given these complex effects of the ocean discussed above, and the important effect on the resultant corrosion of marine structures, advanced research, suitably prioritised, for more effective corrosion monitoring and better control is required to safeguard the integrity of the structures and their components which are exposed to such an extreme environment. Therefore, an accurate assessment of the corrosion conditions at different stages is of vital importance both for the proper selection of longer life materials, durable and anti-corrosion coatings, and for effective corrosion control, and forms an important backdrop for the study in this novel research project. To tackle this vitally important area, this application has been developed collaboratively by two academic groups, which are active in complementary aspects of the field, working together to create new solutions to recognised problems in this extreme environment. The applicants consider that this can be done most effectively through enhanced monitoring systems being created to make better and longer term use of current infrastructure and resources and thus to extend the life of structures.

海洋环境中的结构暴露于极为激进的环境。通过化学，生物学和物理作用的结合，海洋结构产生了严重的风险，这可能会导致所有权和使用成本。这些不仅是每年数百万英镑的维修，康复和更换的水平，而且还可以“清理”污染，而污染不可避免地会因失败而产生。海水包含多种溶解的无机材料，其中氯离子特别影响了海洋结构的腐蚀。在大气暴露区，空气氯化物是负责混凝土结构腐蚀的主要因素。在飞溅区，氯化物，波浪和潮汐对通过洋流产生的化学和直接速度效应所经历的腐蚀程度产生了重大影响。结构上的波载可能具有高度破坏性，尤其是在暴风雨中，就像在极端波动和大风中加载一样。在潮汐区，氯化物和生物有机体的生长共同在促进腐蚀作用的进展中起着重要作用，例如，例如，有机体可以在混凝土表面上生长，这可能导致混凝土本身的微生物分解。除氯化物外，在淹没的区域中，海底沉积物的物理特征还会影响混凝土的恶化。例如，沉积物的晶粒尺寸和堆积因子会影响通过沉积物的扩散，这对氧气和其他腐蚀剂的可用性产生了重大影响。鉴于上面讨论的海洋的这些复杂影响以及对海洋结构的最终腐蚀的重要影响，需要优先考虑高级研究，以进行更有效的腐蚀监测和更好的控制，以维护结构及其组件的完整性，这些结构及其组件暴露于如此极端的环境中。因此，对不同阶段的腐蚀条件进行准确评估对于适当选择寿命较长的材料，耐用和抗腐蚀涂层以及有效腐蚀控制以及在这项新型研究项目中构成研究的重要背景至关重要。为了解决这个至关重要的领域，该应用程序是由两个学术团体共同开发的，两个学术团体积极在该领域的互补方面，共同努力为在这个极端环境中的公认问题创造新的解决方案。申请人认为，可以通过创建的增强监控系统来最有效地完成这项工作，以使当前基础架构和资源更好，长期使用，从而延长结构的寿命。

项目成果

Optical fibre-based sensor technology for humidity and moisture measurement: Review of recent progress

• DOI: 10.1016/j.measurement.2013.07.030
• 发表时间: 2013-12-01
• 期刊: MEASUREMENT
• 影响因子: 5.6
• 作者: Alwis, L.;Sun, T.;Grattan, K. T. V.
• 通讯作者: Grattan, K. T. V.

In Situ Cross-Calibration of In-Fiber Bragg Grating and Electrical Resistance Strain Gauges for Structural Monitoring Using an Extensometer

• DOI: 10.1109/jsen.2009.2026990
• 发表时间: 2009-11-01
• 期刊: IEEE SENSORS JOURNAL
• 影响因子: 4.3
• 作者: Grattan, Simon K. T.;Taylor, Su E.;Grattan, Kenneth T. V.
• 通讯作者: Grattan, Kenneth T. V.

Sewerage tunnel leakage detection using a fibre optic moisture-detecting sensor system

• DOI: 10.1016/j.sna.2014.09.018
• 发表时间: 2014-12-01
• 期刊: SENSORS AND ACTUATORS A-PHYSICAL
• 影响因子: 4.6
• 作者: Bremer, K.;Meinhardt-Wollweber, M.;Roth, B.
• 通讯作者: Roth, B.

Fibre Grating-based sensor design for humidity measurement in chemically harsh environment

• DOI: 10.1016/j.proeng.2016.11.359
• 发表时间: 2016-01-01
• 期刊: PROCEEDINGS OF THE 30TH ANNIVERSARY EUROSENSORS CONFERENCE - EUROSENSORS 2016
• 作者: Alwis, Lourdes S. M.;Sun, Tong;Grattan, Kenneth T. V.
• 通讯作者: Grattan, Kenneth T. V.

Fiber Bragg Grating-Based System for 2-D Analysis of Vibrational Modes of a Steel Propeller Blade

• DOI: 10.1109/jlt.2014.2361631
• 发表时间: 2014-12
• 期刊: Journal of Lightwave Technology
• 影响因子: 4.7
• 作者: S. Javdani;M. Fabian;M. Ams;J. Carlton;T. Sun;K. Grattan