This experimental study deals with the effect of natural marine environment in Adriatic Sea on properties welded additively manufactured stainless steel AISI 316L. The welding materials is special interest to maritime industry, which seeking introduce additive manufacturing technology repair and maintenance ships offshore installations. Three types specimens were tested: a combination two parts, conventionally and, for reference, parts. submerged below sea one, three, six months. Once...

Standard structural assessments of ship hulls include the evaluation elastic response. Elastic analysis neglects extreme and unpredicted loadings, which can produce catastrophic outcomes, such as loss ship’s ultimate strength. Moreover, hull elements are considered unaffected by age-related degradation. Therefore, this study models quantifies effect corrosion-induced degradation on strength a high-tensile-steel (HTS) cargo using progressive collapse nonlinear finite element methods. Uniform...

This paper considers corrosion wastage of two ship hull structure members as a part investigated fuel oil tanks 25 aging bulk carriers. Taking into account that many factors which influence structures are uncertain nature, the related rate (c1) is considered here real-valued continuous distribution, assuming starts after 5, 6 or 7 years. In all cases, by using available data and applying three basic statistical tests, it established between two-parameter distributions, normal, Weibull...

The energy produced from renewable sources (solar, wind, hydro, geothermal, and biomass) provides direct access to clean safe energy. Offshore wind energy, generated through farms, has traditionally relied on fixed structures, whereas innovative floating structures have been commercially applied since 2017. This study investigates offshore areas in Montenegro suitable for farm construction. Research average annual speeds successfully identified a surface area deemed constructing the...

This paper presents an approach for the model estimating probabilistic percent corrosion depth inner bottom plates of fuel oil tanks located in double aging bulk carriers. Assuming that begins after four years exploitation, a statistical to investigations on ratio rate and average initial plate’s thickness considered carriers is given. We consider this be random variable since it included usual linear model. By applying adequate tests available empirical dataset, three best fitted...

This paper gives an approach to the probabilistic percent corrosion depth estimation model for CuAlNi Shape Memory Alloy (SMA) in different marine environments. Real testing was performed validation of theoretical model, where SMAs were exposed 6 and 12 months seawater Focus Ion Beam (FIB) analysis used measure real on surfaces tested samples. A statistical investigation rate SMA is given, observed as a continuous random variable described by linear with assumption that starts immediately...

The longitudinal girder (LG) between fuel oil tanks (FOT) and water ballast in the double bottoms of ships represent critical structural parts whose watertight nature could be harmed by corrosion, thus, causing pollution adjacent areas. new common rules (CSR) define minimum thickness values elements corrosion margins. assessment deviations from prescribed during ship operation optimize criteria. Assuming that corrosive processes begin after four years operation, paper analyzes a linear model...

This paper gives an approach to the probabilistic corrosion rate estimation model for inner bottom plates of bulk carriers.Firstly, by using data from thickness measurements considered 25 carriers, related best fitted linear wastage is obtained as a function ship's age.In this it assumed that life coating 4 years.The equal 135474 .0 mm/year.Notice particular case power proposed in some earlier investigations.In view fact ship hull structures influenced many factors, uncertain nature, recent...

Abstract In this review it is presented the insight of challenges faced by all branches industry in new age, and especially maritime industry, strive for sustainable development, better energy control, use materials with functional properties such as shape memory, direction increasing safety comfort. Therefore, development which associated introduction optimized production achievement properties. This leads to applications different systems possible on devices, meet rigorous requirements...

Probabilistic models of corrosion rate estimation in the case two NiTi alloys obtained by different technological processes are analysed this paper. The depth was measured focused ion beam analysis on a metal surface that not protected an anti-corrosion coating. samples were exposed to influence three seawater environments, and empirical data systematic measurement procedure after 6, 12 18 months. Assuming begin immediately exposure environment, observing as random variable affected various...

To ensure the better structural integrity and maximum safety of bulk carriers in ship design phase, an appropriate corrosion margin is introduced by classification societies, which should enable exploitation ships during projected 25-year life cycle. The new Common Structural Rules introduce even higher value to ship. This directly affects increase hull weight thus need for more total installed power fuel consumption. Higher consumption results increased emissions environmental pollution....

The article emphasizes the importance of considering modern transport chains from point view green transport.In addition to traditional way dealing with and supply chains, where focus is on price timing service, all stakeholders in such should be systematically informed about level GHG emissions energy efficiency so that a higher awareness cargo owners can ensured choose sustainable logistics services.The main contribution research an in-depth understanding complexity through ports eastern...

Corrosion is a phenomenon that occurs as reaction of metal with the environment in which it located. There are several ways to protect metals from corrosion, and one them cathodic protection, where anodes used different designs. Impressed Current Cathodic Protection (ICCP) conceivable uses protection ship hulls. This by far most efficient structure system against corrosion seawater, an external anode power source used. ICCP widely almost all ships. paper will present principle operation...

This paper deals with two different approaches in modelling corrosion wastage over the fuel tanks’ structures on example of ten aged bulk carriers. The first applied method might be treated as a short-term, rather random oriented one, and it is based Monte Carlo simulation technique. technique has been used creating an appropriate predictive model for characteristic steel damages carriers’ tanks caused by general relatively short time interval years, within period between 5th 25th year...