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The selection of marine engineering floating pier structure Considering the needs of marine engineering floating pier structure and the characteristics of grid structure, the design concept of grid structure was applied to design marine engineering floating pier structure, the new marine structure should have sufficient strength and stiffness, be easily manufactured and constructed, and reducing the affect of waves and ocean currents is crucial.
Material properties Table 1 Material properties of steel Model Density [kg/m3] Modulus of elasticity [GPa] Poisson's ratio Yield stress [MPa] 7850 210 0.3 235 The selection of unit.
(the zoom factor of deformation is 5) Fig. 10 1st orde vibration mode Fig. 11 2nd order vibration mode Fig. 12 3rd order vibration mode Fig. 13 4th order vibration mode Fig. 14 6th order vibration mode Fig. 15 8th order vibration mode Fig. 16 10th order vibration mode The analysis of random response under wave force.
The mechanical property analysis of Deep-sea drilling riser[J].

Therefore, it is expected that the phase transformation behavior induced by surface treatment is different depending on the surface treatment technique, and that the microstructure of the deformation-induced layer would be also affected by it.
Based on it, two factors are considered as the reason for the occurrence of the reverse transformation.
One factor is the heat generation during shot-peening, the other one is the decrement of the phase transformation temperature due to SPD.
As a result, the deformation-induced layer due to the shot-peening test has the same microstructure and mechanical property regardless of initial microstructure

Introduction Metallic multilayered composites have attracted much attention due to great potential of such layer-to-layer structure to practical application in mechanical and physical aspects.
Substantial enhancement of mechanical properties, such as hardness, wear resistance, fatigue endurance limit etc.
Both Berkvoich nanoindenter (tip radius ～50 nm) and Vickers microindenter were employed to examine mechanical response of the Cu/Au and Cu/Cr multilayers at room temperature.
These were usually thought to be a pseudo behavior masking the inherent mechanical properties.
While at the submicron scale or more, deformation and fracture are mainly affected by grain orientation because dislocation slip becomes more dominated.

Each colour represents a shape Formability and material properties.
Specific materials and material properties.
The majority of experiments investigating formability and material properties have been done with pure aluminium.
Although it can improve surface finish and reduce production time by allowing larger vertical step sizes without affecting surface quality, increases in tool diameter give much higher forces and can be a limiting factor.
The Influence of mechanical properties of the sheet material on formability in single point incremental forming.

Repeated load tests were then carried out on the Mosquito wings, but these tests indicated that the static strength was not appreciably affected by repeated loading.
Wills at the Second International Aeronautical Conference in New York, proved to be a major contribution in this field.He predicted the emerging danger of fatigue and listed the major contributing factors, all of which have proved to be correct.
During this era major applied investigations were conducted on the General Dynamics F-111 (prompted by early in-flight failure), the Aermacchi MB326H trainer aircraft, the Vampire and the Marcel-Dassault Mirage III 0 aircraft, where the properties of the new high strength materials of construction was a vital consideration, and the development of new inspection techniques were to play an important part in interpreting results of fatigue tests and establishing inspection procedures.
This was achieved by having a manoeuvre loading system that would not significantly affect the dynamic characteristics of the structure.
Because of the lack of data from high life fleet aircraft, a number of risks exist in implementing a SRP1++ program, including (a) influence of in-service defects including mechanical damage and corrosion, (b) influence of widespread fatigue damage (and thus potential new fatigue critical locations not previously seen in other F/A-18 fatigue tests), and (c) ineffective repairs.

This leads to forming a combined effect of mechanical and electrochemical interaction, resulting in much more accelerated damage comparing with the independent working.
The coating layer of the NiCrBSi material appears to be more affected as compared to the NiCrMoNb coating.
In contrast, the coating layer of the NiCrMoNb material appears to be less affected, and it is characterized by small size and uniform distribution of cavities.
Surface roughness is known to be an important factor that affects positively the resistance of the material surface to cavitation.
Vuoristo, Effect of spraying parameters on the microstructural and corrosion properties of HVAF-sprayed Fe-Cr-Ni-B-C coatings, Surf.

To sum up, Table 2 summarizes the basic properties of three different luminescent materials.
Study on mechanical properties and thermal stability of PMMA.
Effect of Al/Sr ratio on the luminescence properties of SrAl2O4:Eu2+, Dy3+phosphors.
Influence on luminescent properties of the Sr2MgSi2O7: Eu2+ by Dy3+, Nd3+ co-doping.
Self-luminescent cement-based composite materials: properties and mechanisms.

In research of foreign scholars on micro-hardness and microstructure of grinding layer, Since the 1990s years BROCKHOFF had carried through research on the grinding hardening experiment of GCr15 and 40CrMnMo, And some achievements had been made[1];ZARUDI et al had researched texture of grinding hardness layer, and simulated texture change[2],but did not consider that temperature field distribution affected on austenite grain sizes of different layers depth.
The influence factors and the change rule are going to be analyzed. 1 Grinding experimental conditions 1.1 Experimental material and machining processes Here 20CrMnTi of spiral bevel gears was commonly selected in automobile gear material.
Moreover, the distance from thicker martensite structure of hardening area to grinding surface increased as augmenting grinding depth a, and the distance was slightly influenced by grinding wheel speed vs or gear feeding speed vw. 4 Experimental analysis of micro-hardness and structure of grinding burns and cracks Fig.4 Central microstructure of normal grinding small gear(1000×) Gray-white lath martensite Bainite White ferrolites 4.1 Influence of grinding temperature on burns Grinding temperature would affect change of metallographic structure, and grinding burns and discoloration would happen when fatally.
This showed that burns were affected by temperature, the temperature of this area was higher than one of gear tempering temperature(150℃).
[2] ZARUDI I,ZHANG L C.Mechanical Property Improvement of Quenchable Steel by Grinding[J].Journal of Materials Science, 2002, 37(18):3935-3943

Instability is the factor that causes the most significant technical problem in the drilling operation and it is also a major source of lost time and high cost [1].
Thus, the stability of oil wells has been studied considering the chemical and mechanical aspects of the rock, mainly with respect to shale-fluid interactions [4].
The stability of shales rich in clay are deeply affected by its complex physical and chemical interactions with drilling fluids [6].
The CEC is a property that derives from the structural characteristics of a clay mineral, and the estimation of this parameter is essential for a more accurate evaluation of reactive formations, as each clay mineral has a range of specific values.

The shot-noise-limited sensitivity of a magnetic field measurement is given by [10] (1) where g is the ground-state Landé factor, μB is the Bohr magneton, is Planck’s constant, N is the number of atoms involved in the measurement, t and τ represent measurement time and atomic coherence time respectively.
This material has excellent temperature and aging resistance, great mechanical strength to process easily.
The cell is placed in the center of the oven and sealed with heat-resistant adhesive to maximize the heat preservation property.
However, the residual magnetic field from the platinum resistance was of the order of few dozens nanotesla, which affected the experiment condition seriously.