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Corrosion Resilience of 2101 LDX Duplex Stainless Steels in Varying Sulphate Anion Concentrations Roland Tolulope Loto1* 1Department of Mechanical Engineering, Covenant University, Ota, Ogun State, Nigeria tolulope.loto@covenantuniversity.edu.ng Keywords: steel; pitting; corrosion; passivation; H2SO4 Abstract.
This property enables the broad utilization of stainless steels in industry where corrosive anions such as Cl-, SO42- are prevalent [2–5].
Material selection is an important factor in ensuring the lifespan and operational service life of structures, components and devices made of stainless steels.
Uhlig, Environmental factors affecting thecritical potential for pitting in 18-8 stainless steel.
Charles, Composition and properties of duplex stainless steels.

Introduction Bio-inspiration or biomimicry is a Synectic ideation method is mechanical design where physical attributes and characteristics observed in nature is used to solve a mechanical problem.
The wing skin also found to have different properties at different parts where the plagiopatagium, which is the part between the body and the hand skeleton, have the highest flexibility which is important in determining the centre of lift for the wing.
Goulbourne et al., 2011 [5] where the spatial variations of the wing fibre and a model of the spatial variations was characterised and shown to have an effect of its an-isotropic mechanical property.
Another factor that effects the aerodynamics of a wing is the movement of the wing itself.
Mechanical Properties of Bat Wing Membrane Skin.

Fundamental Computing of the Laser Beam The selection of type of Laser radiation source to sinter the material depends on the rules of evolution of processes and effects such as absorption of radiation in the material surface, heating, melting and evaporation of materials and formation of heat affected areas ...
Hence Rs ≈ f. λ/D ≈ 200.10,6.10-3/40 = 0.053mm The width of the scan line b = 2.Rs = 2.0,053 = 0,106 mm The computing of laser energy relates to many factors such as melting temperature, powder density, scanning velocity… h.vc.b.
Computing of Y axis motor The calculation of the motors based on the friction angle factors created by the sliders structure moving in Y directions.
Computing of X axis motor (Fig. 2) The calculation of the motors based on the friction angle factors is due to the structure of the slider rails in X directions.
Ana Pilipovit, Igor Drstvenšek, and Mladen Šercer, Mathematical Model for the Selection of Processing Parameters in Selective Laser Sintering of Polymer Products, Advances in Mechanical Engineering, Volume 2014

The analysis of motion and mechanics property has been studied on the five hinged incline arranged and double elbowed force increasing mechanism of injection machine in this paper.
A few changes of the design parameters may increasingly affect the unitary performance of products.
But the limitation of injection power and other factors should be involved.
motion and mechanics property of force increasing mechanism greatly.
Consequently, motion and mechanics property of force increasing mechanism of injection machine is improved, which allows to use lower power to obtain higher efficiency.

Properties of Ge such as high carrier mobility, compatibility with Si and adaptability with highk materials makes it comparable to silicon.
Since the electrical characteristics are affected by design parameters, this work determines the most influential factor by investigating the effects that arise due to varying multiple design parameters.
VTH is affected by the junction depth.
Ramasamy, "Green versus chemical precipitation methods of preparing zinc oxide nanoparticles and investigation of antimicrobial properties," Journal of Nanomaterials, vol. 2021, 06 2021
[38] "Chapter 5 - bandstructure and related properties," in Silicon-Germanium Strained Layers and Heterostructures (S.

Though the simple immersion showed no noticeable influence on the PZT rings, those PZT rings treated with the application of the AC voltage were obviously degraded in their piezoelectric properties.
Usually, however, the properties of lead zirconate titanate piezoelectric ceramics-based devices degrade gradually in the course of service and sometimes even sudden failures can occur to the devices.
Water could not affect the dense PZT rings through permeation.
versus frequency spectra are dependent on the various properties of piezoelectric materials.
It indicates that the second treatment has induced an obvious degradation in the piezoelectric properties of the PZT ring.

For the first problem, an algorithm for locating wrinkles through extracting feature curves based on photo is presented; For the second problem, a shape control function is proposed considering the properties of real wrinkles, which could provides intuitive parameters for easily modulating the depth and the width of wrinkles, and express the attenuation and impact of one wrinkle on its surrounding surface.
These details constitute the major elements affecting the visual appearance of the face, because they not only show a person's age, but also are an important factor in interpreting a person's inner world.
The experiment results demonstrate that our wrinkle modeling method can achieve the photo-realistic wrinkles Physiology and properties of wrinkles In order to enhance the verisimilitude of wrinkles, it is necessary to study and analyze the physiology to determine the characteristics and attributes.
No matter what type of wrinkles, we all can sum up its properties as follows: 1) Each wrinkle has a sharp inward furrow with a round outward bulge, as well as a sequence of fine attenuated ripple. 2) The true wrinkle has some relation to human age, and it becomes gradually more prominent with repeated wrinkling and age. 3) The middle of each wrinkle is deeper and wider while two ends of it are shallower and thinner by gradual transition. 4) The wrinkle is often not a one stand-alone, often accompanied by a number of wrinkles.
Thus, formation and shape of each wrinkle can affect the surrounding wrinkles or shin.

Temperature, strain rate and the material´s hardening properties are the major influences affecting the result of this competition between cleavage and ductile fracture mechanisms.
In other words, fracture mechanics concepts suffer from two major shortcomings: · The material´s fracture toughness properties show a pronounced dependency on the state of stress
Likewise, the flow behavior is not affected by damage evolution.
C Si Mn P S Cr Mo Ni Al Nb Cu Ti V Co 0.20 0.20 0.91 0.005 0.002 0.40 0.49 0.80 0.02 0.002 0.034 0.001 0.005 0.01 The material´s mechanical properties are presented in [22] together with a precise description of the calibration scheme for material parameters originating from the yield stress definition and the ductile damage evolution law.
Summary The presented hybrid damage mechanics model gives a good approximation of the Charpy impact toughness properties of steel 22NiMoCr3-7.

Experimental Study on the Surface Micro-geometrical Characteristics of Quenched Steel in Ultrasonic Assisted Turning Feng Jiao a, Xiang Liu b, Chongyang Zhao c and Xiong Zhang d School of Mechanical and Power Engineering, Henan Polytechnic University, Henan, China ajiaofeng@hpu.edu.cn, bliuxiang621@126.com, czhaocy@hpu.edu.cn, dzhangxiong2007@126.com Keywords: Ultrasonic Turning; Surface Micro-Geometry; Surface Roughness; Quenched Steel Abstract: Compared with conventional turning, ultrasonic assisted turning demonstrates many advantages in turning of quenched steel.
Introduction The surface micro-geometry is also called surface micro-topography, which describes the convex peak and valley in different shapes and sizes residual on the machined surface because of the friction between tool and workpiece or tool and chips, the plastic deformation of shear zone and the vibration in the processing system etc. during turning process [1].The surface micro-geometry not only affects the mechanical properties of system such as friction and wear, contact stiffness, fatigue and coordinating characteristic etc., but also influences the performance and life of the whole machine directly [2-4].
On the basis of ultrasonic cutting theory, some single factor experiments have been carried out in the paper, and the influence rules of machine speed n, feed rate f and depth of cut ap on surface roughness Ra are studied.

Introduction In recent years, ferroelectric films have been extensively investigated for various applications including nonvolatile ferroelectric random access memory (FeRAM), sensor and actuator in micro-electro-mechanical systems (MEMS) [1-3].
It is well known that the ferroelectric and piezoelectric properties are affected by the domain structure.
Cross-section TEM specimens of the PTO/STO structure were made by mechanical polishing followed by Ar ion milling using a Fischone low angle milling and polishing system (model1010).
The 180º domain wall energy of PTO has been determined to be 132 mJ/m2, about a factor of 4 higher than the 90º domain wall energy (35 mJ/m2) [22].