Materials Literature
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Ceramic laminates designed with strong interfaces have shown crack growth resistance (R-curve) behaviour through microstructural design (e.g. grain size, layer composition) and/or due to the presence of compressive residual stresses, acting as a barrier to crack propagation. The goal of the contribution is to model th…
Concrete materials with a large number of micro-cracks were defined as inhomogeneous materials. And the mechanical properties of inhomogeneous materials were regarded as high-order deformation gradient dependent. Starting from the nonlocal thermodynamics theory and the hypothesis of total energy equivalence, the gradi…
In this work a preliminary data set including experimental results from fatigue tests on smooth and foreign object damaged (FOD) aluminium samples coated with WC/C deposited with PVD (physical vapour deposition) technique was considered before testing WC/C-coated spur gears for racing motorcycles under rolling contact…
Hetero-modulus ceramics (HMC) present the combination of a ceramic matrix with inclusions of a dispersed phase with considerably lower values of Young's modulus, resulting in a material with significantly advanced properties. Densified '-Si 6−x Al x O x N 8−x based HMC materials, with various volume contents of low-mo…
The problem of treatment parameter optimization focused on the fatigue resistance is analysed through a case study about Deep Cryogenic Treatment (DCT) of AISI 302 steel. In particular, the possibility to integrate fatigue data fittings through the Maximum Likelihood Estimation (MLE) method in the optimization process…
On page 4152, Martin Moskovits and co-workers report a reversible surface-enhanced Raman spectroscopy (SERS)-based sensor consisting of gold nanoparticles tethered with stem loop aptamers capable of delivering robust signals from sensing events involving as few as two target molecules. Washing the sensor with buffer c…
It is known that type 310S stainless steel is insensitive to hydrogen embrittlement. Then, the effect of hydrogen on the mechanical properties has not been studied in detail. In the present work, SSRT was carried out under hydrogen cathodic charging condition. Elongation increased by hydrogen charging, while reduction…
Intelligent materials have been studied in various fields. In this study, Shape Memory Composite (SMC) is produced as one of those intelligent materials. SMC consists of Shape Memory Polymer (SMP) and Shape Memory Alloy (SMA). These two materials possess different characteristics in temperature changes. Therefore, we…
Abstract Beim Recycling von graphischem Altpapier bilden Druckfarben einen wichtigen Anteil an den zu entfernenden Verunreinigungen. Vor allem die wasserbasierten Druckfarben stellen hier eine Herausforderung dar. Ziel dieser Untersuchung war die Entwicklung einer neuen Flotationstechnologie, die diese Druckfarben ent…
In this paper, a new technique for fabricating silicon carbide (Si-C) microelectromechanical systems (MEMS) is described. Slip casting to UV-thick photoresist (SU8) micro mold was carried out for the fabrication of three-dimensional Si-C MEMS parts. Ultrahigh molecular weight polycarbosilane (PCS) was used as the prec…
Carbon nanotubes (CNTs) with average diameter of 14 nm were modified by oxidation in nitric acid and followed by treatment in sodium dodecyl sulfate (SDS). XPS analysis verified the introduction of carboxyl group and SDS molecules onto the CNT surface. The CeO 2 coatings on CNTs were synthesized using two different pr…
A globe valve is a linear motion valve used to shut off and regulate fluid flow in pipelines. Depending on the number of process connections, they are produced as two‑ or three-way valves. The main valve component carrying the internal pressure is the valve body. For safe exploitation, the valves are designed with the…
Chromium coatings have been used for the protection of gas turbine blades in power plants during the last years due to their very good resistance against steam corrosion. Microhardness, scratch, adhesion and pin-on-disk sliding tests are commonly used for rapid evaluation of the mechanical properties of these coatings…
A preliminary sensitivity examination of the ductility exhaustion based creep damage prediction model, currently used in the R5 high temperature assessment procedure, showed that material property inputs had significant effects on damage prediction. In the present work, the link between the microstructural factors and…
Abstract In this article, a novel high QL triple‐split ring resonator (T‐SRR) of mu‐negative metamaterial is suggested.It is used in the design of an I‐ band oscillator. A very low phase noise can be obtained for the oscillator due to the sharp band‐rejection characteristic of T‐SRR. The oscillator is designed to oper…
The MIC behavior of the ship plate steel specimen with LaCl3-Zn epoxy coating in the sulfate-reducing bacteria (SRB) solution was investigated in this paper. The variation of corrosion potential over time of different specimens in SRB solution show that the corrosion potential of the specimen with LaCl3-Zn epoxy coati…
This paper presents the analysis of different types of shear strength of wood which can differ very much due to its structure and different orientations of applied load. These combinations of wood structure and load orientations lead to different modes of fracture. The main aim of the paper is to find a relation among…
The effect of shot-peening on the uniaxial fatigue behaviour of four engineering steels, heat treated to a similar final hardness was investigated. Forged 0.39%C and 0.72%C steels, a quenched and tempered 0.51%C steel and a 0.50%C powder forged (PF) steel were fatigue tested under fully reversed (R=-1) push-pull loadi…
A bilayer wire grid polarizer composed of UV-replicated nanograting and deposited aluminum layer was designed, fabricated and evaluated for a simpler and less costly reflective polarizer. An electroformed nickel stamp was fabricated using a lithographed photo resist master pattern having a nanograting with a pitch of…
This study analyzed the crack healing behavior of Si 3 N 4 composite ceramics (SSTS-1) with SiO 2 1.3 wt.% nano-colloid additive, compared with that of Si 3 N 4 composite ceramics (SSTS-2) with SiO 2 0.0 wt.% nano-colloid additive. Cracks of about 100 − 500 μm were obtained from a single and multi-Vickers indenter usi…