Search results

Some properties of advanced material are important in airframe applications.
Chief among these properties are strength and stiffness, especially in relation to weight.
Meanwhile, some metals, such as titanium and steel, have mechanical and temperature properties that are crucial in some applications and cannot be matched by today's composites.
Titanium's mechanical properties, such as strength and stiffness, are more compatible with those of composites than are aluminum's, so titanium is used for applications in airframe substructures that are part metal and part composite.
Moreover, the mechanical and processing properties of current aluminum-lithium alloys are considerably superior to those of previous versions.

The hysteresis of viscoelastic properties of tire structure was shown the largest factor of the power consumption rate in the tire, the rough estimation of 90% of the total energy loss.
The final results and characteristic of the tire numerical modeling were depended on various factors which were the material data to yield the significant impact on the correction of the numerical results; therefore, an accurate characterization and validation on the tire rubber mechanical properties were required in the FEA of tires.
Specimen Preparation In order to prepare the specimens regarding to the standard test methods for mechanical properties of material which are ASTM D575 and ASTM D412, the TWEEL tire is cut using a water jet cutting technique as shown in Fig. 1.
Mechanical Properties Testing The prepared specimens were carried out to test in tension and compression using universal testing machine, Instron 5969.
Malachowski, Assessment of mechanical properties of offroad vehicle tire: coupon testing and FE model development, Acta Mechanica Et Automata. 6 (2012) 17-22

There might be the dual effect of the segregation on structures and property of the composites.
But the solidification, as common alloy is affected by selecting crystallization and crystallizing rate larger than solute diffusing rate, the solute segregation cannot avoid forming in the metal matrix, and affects the solidifying structures finally.
The segregation causes the non- uniform distribution of local composition in the composite, so that affects properties of material; on the other hand, solute segregation, especially active elements riching at the fiber/matrix interface and producing suitable chemical reaction, is favourable to improving wetness and combination between the matrix and the ceramic reinforcement.
The interface and segregation phenomenon in alumina short fiber reinforced Al-Cu alloy composites manufactured by squeeze casting are observed and analyzed on metallogrraphic microscope and scanning electron microscope (SEM), and the main affecting factors are discussed in this paper.
The segregation produced in the composite, which causes the composition non-uniformly distributed to result in the difference of structure in the composite even as to affect the using properties of the composite, should try to be lightened or eliminated.

These properties arise from the combination of both the metal complex and the polymers’ characteristics (processability, mechanical strength, thin film formation, etc.).
Their luminescence properties were investigated.
Luminescence Properties.
In order to study the energy transfer process and luminescence mechanism, the effect of some factors such as the contents of Alq3 on luminescence spectrum was studied.
The luminescence properties of the copolymers were investigated by UV-vis and fluorescence spectra.

For metal forming it is generally assumed that the shape, properties and dimensions of the final product are directly controlled by the mechanical state of the process and material mechanical response represented by flow stress, but in practice the microstructure evolution can change the situation drastically.
This process will lead to completely different microstructure evolution and properties compared to the case when the plate is rolled with no strain path changes using continuous rolling stands.
Cyclic shear strain reversals lead to redundant strains formation near the surface of the materials what makes prediction of the microstructures and properties, using existing microstructure evolution models especially complex [2].
It is especially important in the case of AHSS, where due to microalloying elements (Nb, Ti, V), final mechanical properties result from interactions between static recrystallization process and strain-induced precipitations.
In these alloys, increased strain reversal influences two factors: reduces driving force for recrystallization and reduces formation of strain-induced precipitation process what, in turn, causes decrease in Tnr temperature.

The effect of post weld heat treatment on the microstructure and mechanical properties of friction stir welded 7039 aluminium alloy is also studied.
Indira Rani et al. [5] examined the mechanical properties of AA6351 using GTAW welding with non-pulsed and pulsed current at different frequencies.
Decline of Mechanical properties is observed at the Heat Affected Zone (HAZ) of the joints of the aluminium alloy, AA 5083 when welded with high current and less speed, because of high heat accumulation at the HAZ.
R.N. (2012), Effect of Pulsed Current Tig Welding Parameters on Mechanical Properties of J-Joint Strength of AA 6351, The International Journal of Engineering And Science (IJES), 1(1), 1-5
J. (2011), Effects of TIG Welding Parameters on Morphology and Mechanical Properties of Welded Joint of Ni-base Super alloy, Procedia Engineering, 10, 37-41.

Nano-magnetic Rheological Fluid Magnetorheological fluid is such a material that can change drastically in rheological properties under magnetic field.
Factors Affecting the Rheological Properties of Magnetorheological Fluid In the presence of applied strong magnetic field, magnetorheological fluid shows a nature of non-Newtonian fluid, with its stress-strain relation generally described in the Bingham plastic model [2].
The factors affecting the yield stress of magneto-rheological fluid are as follows: (1) The influence of the particle saturation magnetization: When the particles are completely magnetically saturated, the maximum yield stress of the magnetorheological fluid is τy∝ Ms2 (where Ms is the saturation magnetization of magnetic particles) [6].
Rheological Properties of Nanometer Iron-nitride MRF The yield stress of the magnetorheological fluid, characterizing the cure strength of this material, is the main parameter of this material.
The magnetorheological fluid rheological properties of the test device used in this paper is a slit rheometer[8], an indirect measuring method.

If the crosslinking is performed in sudden manner, the affects caused due to it on the UHMWPE are reduction in solidness, mechanical properties embroilment and reduced immobility of the polymers.
The application of the XLPE results in to insert misalignments but non effect on then mechanical properties.
This material comprises super biocompatibility thank to its optimum and effective mechanical properties, it is also discovered that the trash material properties were also biocompatible [126].
Affatato, “Ultra-High Molecular Weight Polyethylene: Influence of the Chemical, Physical and Mechanical Properties on the Wear Behavior.
Toni, “Risk factors for ceramic liner fracture after total hip arthroplasty,” Hip Int, vol. 22, no. 6, pp. 607–614, Dec. 2012, doi: 10.5301/HIP.2012.10339

Differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA) and fold-deploy shape memory tests were used to characterize the feasibility of two-stage curing, thermodynamics properties and shape memory performance of these polymers.
Secondly, the SMPs usually have low crossing-link because we hope they possess low folding package temperature, as a result, the mechanical properties will be deteriorated which limiting the application of SMPs using in space.
After two-stage curing, the materials’ stability and heat resistance will be significantly improved, though they lost the shape memory properties.
Thermodynamics properties including the Tg and storage modules of the composites researched by dynamic mechanical thermal analyzer (American, TA Q800) DMA, the sample size was 25mm×5mm×1mm.
The lower crosslink-density may lead lower Tg due to crosslink-density was one of most important influencing factors for Tg, Generally speaking, Tg might characterize the heat resistence of materials, hence, the results proved that heat resistence of SMPs had been enhanced effectively by the second curing stage.

The properties of metakaolin-based materials were investigated.
The properties of the materials were investigated using XRD, FTIR, and SEM.
The adsorbent properties of the studied material were investigated.
Ueng, Main factors affecting mechanical characteristics of geopolymer revealed by experimental design and associated statistical analysis, Constr.
Huang, M.Han, The influence of a-Al2O3 addition on microstructure, mechanical and formaldehyde adsorption properties of fly ash-based geopolymer products, J.