alloys. The various combinations of alloying additions and strengthening mechanisms used for wrought aluminum alloys are shown in Table 1. The strength ranges achievable with various classes of wrought and cast alloys are given in Tables 2 and 3. Casting compositions are described by a three-digit system followed by a decimal value.
Anti-Biofouling Features of Eco-Friendly OleamidePDMS The biofouling of marine organisms on a surface induces serious economic damage. One of the conventional anti-biofouling strategies is the use of toxic chemicals. In this study, a new eco-friendly oleamidePDMS copolymer (OPC) is proposed for sustainable anti-biofouling and effective drag reduction. The anti-biofouling characteristics of the OPC are investigated using algal spores and
Oct 18, 2017 · Marine structures are designed with a requirement to have reasonably long and safe operational life with a risk of catastrophic failures reduced to the minimum. Still, in a constant wish for reduced weight structures that can withstand increased loads, failures occur due to one or several following causes:excessive force and/or temperature induced elastic deformation, yielding, fatigue
Experimental study on the dynamic behaviour of aluminium Recent experimental studies   have shown that the yield strength and strain hardening characteristics of many different marine grade steels improve at sub
Hot deformation behavior and processing map of low-alloy The hot deformation behavior of a low-alloy offshore steel was systematically investigated within the temperature range of 8501150 °C and strain rate range of 0.0110 s1, via hot compression testing. The hot working equation, grain size model and recrystallization kinetic models of the steel were developed by fitting the experimental data.
Jun 06, 2018 · ent torquetension characteristics of marine mooring chains and wire ropes, sensitivities of different compo- waters due to excessive torsional deformation. Zhang et al.10 investigated the dynamic torsional characteristics of mine hoisting rope and its internal spiral compo-nents. role of hardening and provided useful insights into the
Loading Rates and Tensile Properties / Fracture - TWISymbol.2. The present paper provides an overview on test techniques for determining tensile and fracture toughness properties under dynamic conditions and examples of effects of dynamic rates on tensile properties and fracture toughness, as well as structural assessment considerations.
Natural and bio-inspired underwater adhesives:Current Nov 09, 2017 · In addition to the cell-regulated mechanisms in governing various molecular processing details, other intriguing and important aspects about marine underwater adhesion are how organisms store the adhesive precursors of different features and how they prevent those molecules from premature hardening before they are eventually extruded and cured.
When designing a slender marine structure for a deepwater application, marine current ef-fects on the structural behavior are a major concern with respect to both static and dynamic conditions. With particular reference to the design of the Nemo Tower structure, characterized by a
Static and Dynamic Loading Behavior of Ti6Al4V Honeycomb Laser Engineered Net Shaping (LENSTM) is currently a promising and developing technique. It allows for shortening the time between the design stage and the manufacturing process. LENS is an alternative to classic metal manufacturing methods, such as casting and plastic working. Moreover, it enables the production of finished spatial structures using different types of metallic powders as
Temperature Effects on Dynamic Properties of Suspended The paper aims at studying the influences of temperature on the suspended cables dynamical behaviors subjected to dual harmonic excitations in thermal environments. Significantly, the quadratic nonlinearity and the corresponding secondary resonances are considered. By introducing a tension variation factor, the nonlinear vibration equations of motion could be obtained based on the
Jan 09, 2018 · Dynamic Hardening Behaviors of Various Marine Structural Steels Considering Dependencies on Strain Rate and Temperature, J. Mar. Struct., 32, pp. Some Recent Developments in the Dynamic Inelastic Behavior of Structures, J. Ships Offshore Struct., 1 (1