Search results

The use of the Oxley machining theory is dependent on the following criteria being available for the prediction of the technological performance factors such as power and cutting forces – (i) machining with a continuous chip with no built-up edge, (ii) the problem can be solved by using the cutting conditions under the control of the machine tool operator and (iii) the appropriate work and tool material properties to determine the geometry of chip formation and the zones of plastic deformation together with the associated stresses, strain, strain-rates and temperatures are known.
Work Material Properties The predictive process uses work material flow stress properties which is a function of strain, strain-rate and temperature and can be defined using the following equation (1) where s is the flow stress at a particular strain e for a given material with s1 being the flow stress at e=1 and n is the strain hardening index.
This is generally the function of a number of factors such as the material flow stress, temperature generated, strain and the strain-rate the material undergoes.
Given that the material properties were derived from the data by Oyane et al [10] the results here show that the flow stress properties must cater for the variation in strain, strain-rate and temperature in order to obtain good correlation between the theoretical and experimental results.
The flow stress properties allow the prediction of essential technological parameters for the cutting conditions under consideration.

MNPs are promising candidates for clinical applications because of their strong magnetic properties and biocompatibility.
Synthetic polymers (e.g. polystyrene, polydecylmethacrylate, polyamide) are available in a wide variety of compositions with readily controlled physicochemical, chemical, mechanical and biological properties.
Their surface can be easily modified without significantly altering their properties.
The research efforts are being placed on generating cell-targeting drug delivery systems to specifically release the desired drugs to unhealthy cells without affecting the healthy cells [143].
Even though several studies have been conducted, many of the earlier experiments were not designed to isolate the source of the cytotoxicity, allowing the different physiochemical properties of the NPs plus experimental setup factors to influence and confound the findings.

Bistatic LIDAR System for the Characterisation of Aviation-Related Pollutant Column Densities Alessandro Gardi1, Roberto Sabatini2,a* and Subramanian Ramasamy3 1,2,3 School of Aerospace, Mechanical and Manufacturing Engineering, RMIT University Melbourne, VIC 3000, Australia aroberto.sabatini@rmit.edu.au Keywords: bistatic LIDAR, unmanned aircraft, pollution measurements, CO2, pollutant column density, sustainable aviation, aviation pollution, green-house gas.
In particular, a growing scientific interest is associated with the measurement of spatial and temporal variation of macroscopic observables, and on the microphysical and chemical properties of atmospheric constituents, including molecular, aerosol and particulate species [1, 2].
Atmospheric Laser Beam Propagation The propagation of laser radiation in atmosphere is affected by a number of linear and nonlinear effects.
If their molecular volume density in the propagation medium is sizeable, the transmittance spectrum is also significantly affected and this enables unambiguous species detection.
The parasite effects, in fact, are assumed to equally affect the off-absorption and the on-absorption transmittances.

Even though these materials are effective, they present environmental challenges due to their non-biodegradable properties.
Their superior mechanical properties, combined with a high cellulose content and low microfibrillar angle, make them especially suitable for developing composite reinforcement materials [10].
Characterization of the dielectric properties of the composite yielded a permittivity value (εr) of 4.13.
Karim, Effect of factors on dielectric properties of pineapple leaf for microwave application, Materials Today: Proceedings, 2023
Jayabalakrishnan, Characterization of mechanical, dielectric, EMI shielding properties of abaca bract biocarbon and pineapple fiber reinforced rigid vinyl ester composite, Polymer Bulletin, 2024, 1-19

Since the main sensing mechanism of CNT network is based on adsorption of gas molecules affects the electrical conduction properties of the CNT surrounding mediums, the change in resistance could be correlated to the concentration of gas molecules adsorbed [13].
This non-polar molecule could prevent agglomeration due to steric factors while efficiently contributing interactions between the nanotubes and the nonpolar polymeric matrix [18].
Electrical properties showed that CNT acts as p-type semiconducting sensing material.
Lanceros-Mendez, Effect of carbon nanotube type and functionalization on the electrical, thermal, mechanical and electromechanical properties of carbon nanotube/styrene-butadiene-styrene composites for large strain sensor applications, Compos.
Thim, Dodecylamine functionalization of carbon nanotubes to improve dispersion, thermal and mechanical properties of polyethylene based nanocomposites, Appl.

The dispersants using petroleum products as basic materials will face a higher price day by day, due to oil resources will be depleted during the running modernization of society.[4] Therefore, it will become our long-term objective that developing low cost and biodegradable resources as the raw materials of CWS additives, such as suitable plant-based and starch-based additives, for the preparation of high concentration CWS with minimal viscosity and nonsettling properties.[5] Fortunately, the starch is widely found in nature, especially in China.
In a three-necked flask equipped with mechanical stirrer, reflux condenser and thermometer, the appropriate amounts of distilled water, starch and ammonium potassium (KPS) were added, gently stirred, heated to 90 ℃, and then kept at the temperature for 30 min.
Zeta potential indicates coal interparticle electrostatic repulsion force, which directly affect the apparent viscosity of CWS.
The application properties of CWS are influenced significantly by its rheological behavior.
The dispersant makes the slurry pseudo-plastic fluid with a shear thinning property meeting the needs in practical application.

To explore a way to characterize fatigue damage degree of ferromagnetic materials by metal magnetic memory testing (MMMT), tension-compression fatigue test of specimens with different stress concentration factors made of 45% C steel were carried out.
The results show that, the gradient variation of Hp(y) signals during the fatigue test is similar to each other, but the gradient value is different due to the different stress concentration factors.
In this paper, tension-compression fatigue tests of specimens with different stress concentration factor were carried out.
It is promising to provide a new way for fatigue life evaluation of ferromagnetic materials by using 2-dementional magnetic memory signals. 1 Experimental 1.1 Specimen The test material of this study was 0.45% C steel, which has excellent mechanical property such as plasticity, stiffness, strength and so on.
The specimen with stress concentration factor 2 was named specimen 1, and that with stress concentration factor 5 was named specimen 2 for short, respectively. 2.1 Variation of Hp(y) during fatigue Hp(y) signals of specimen 1 and 2 under different fatigue cycles were shown in Fig. 2.

The hydraulic properties of granulated blast-furnace slags have been studied for nearly 200 years, and use of slag in mortars and concretes dates back more than a hundred years.
Ai-Otaibi: Investigating some durability related properties of alkali-activated slag concrete. 29th conference on our world in concrete & structures: 25 - 26 august 2004, Singapore [2] The American Society for Testing and Materials, ASTM, C989-99 [3] D.
Lewis: Properties and uses of iron and steel slags.
Hakkinen: Influence of slag content on the microstmcture, permeability and mechanical properties of concrete.
Humphreys: Effects of ground granulated blast furnace slag (ggbs) on the strength and swelling properties of lime-stabilized kaolinite in the presence of sulphates.

Introduction Ceria-based electrolytes based on the ion-doping technique have been investigated extensively as regards its fundamental properties and applications for intermediate temperature solid oxide fuel cells (ITSOFCs) during past decades [1-4].
However, due to its inherent shortcomings and limits, such as the reduction of Ce 4+ to Ce 3+ associated with the fuel cell (FC) anodic condition resulting in partial electronic conduction and poor mechanical properties, and insufficient ion conductivity at low temperatures, e.g., 5x10 -3 Scm-1 for the samarium doped ceria (the best ion conducting ceria) at 600°C [5], current ceria-based electrolytes are meeting critical technical challenges for applications.
Therefore, for the La2O3-CeO2 binary system the La 3+ doping effect would not be the major factor to affect the system electrical properties.
Due to this amount of the carbonate used the CeO2-La2O3-25 NLC composites were able to maintain a good solid state, and had actually better mechanical properties than the pure CeO2-La2O3 itself.

In addition, it shows that the control of precipitation behavior of second-phase particles is the key factor to the texture inheritance in warm rolling, cold rolling and recrystallization processes.
As the second-phase particles pin the dislocations and grain boundaries, they affect the texture formation in cold rolling and recrystallization.
Table 2 displays the mechanical properties of the sheet after recrystallization.
Table 2 Mechanical properties of annealed Ti+P-IF steel YS(MPa) TS(MPa) YS/TS EI(%) n 0r 45r 90r r r∆ 216 343 0.63 35 0.28 1.4 2.25 1.96 1.95 -0.60 After the recrystallization, the volume fraction of (111)//ND component remains high, but its sharpness decrease as it broadens.
Obara, in Modern LC and ULC Sheet Steels for Cold Forming: Processing and Properties (Ed.: W.