Thermal expansion

The anharmonic thermal expansion (TE) coefficient of crystalline silver (Ag) has been calculated and analyzed in the temperature-dependent. Based on the anharmonic effective potential, the calculation model is developed using the correlated Debye model and the manybody perturbation approach.

7p viambani 18-06-2024 1 1   Download

Part 2 book "Electromagnetic, mechanical and transport properties of composite materials" includes content: Viscoelastic behavior of composites; general introduction to heat transfer; fundamentals of conductive heat transfer; thermal conductivity of composites; thermal conductivity of composites of core shell particles; influence of interfacial contact resistance on thermal conductivity of composites; thermal diffusivity and coefficient of thermal expansion of composites;... and other contents.

203p dianmotminh00 22-04-2024 5 1   Download

Part 1 book "Essential college physics" includes content: Measurements in physics; motion in one dimension; motion in two dimensions; force and Newton's laws of motion; work and energy; momentum and collisions; oscillations; rotational motion; gravitation; solids and fluids; waves and sound; temperature, thermal expansion, and ideal gases; heat; the laws of thermodynamics.

342p muasambanhan05 16-01-2024 3 0   Download

Part 2 book "Elementary textbook on physics (Vol 1 - Mechanics heat molecular physics)" includes content: Thermal expansion of solids and liquids; work heat law of energy conservation; molecular theory; properties of gases; properties of liquids; properties of solids - transition from solid to liquid state; elasticity and strength; properties of vapours; physics of the atmosphere; heat engines.

217p muasambanhan02 18-12-2023 4 2   Download

Lecture Fundamental of Physics 2 - Chapter 1, Part 1: Temperature. This lesson provides students with content about: temperature and the Zeroth law of thermodynamics; thermometers; the constant-volume gas thermometer and the absolute temperature scale; the constant-pressure thermometer and the fahrenheit temperature scales; the constant-pressure thermometer and the celsius temperature scales; other temperature scales; thermal expansion solids and liquids;...

24p caongulam 10-11-2023 4 3   Download

Continued part 1, part 2 of ebook "Mechanical engineering principles" provides readers with contents including: dynamics; linear and angular motion; linear momentum and impulse; force, mass and acceleration; work, energy and power; friction; motion in a circle; simple harmonic motion; simple machines; heat transfer and fluid mechanics; heat energy and transfer; thermal expansion; the measurement of temperature;...

160p hanlinhchi 29-08-2023 7 2   Download

A metamaterial design is introduced herein, which exhibits negative thermal expansion during heating but reverses into positive thermal expansion during cooling with respect to the reference temperature. The metamaterial is inspired by geometric patterns found at the Alhambra Palace and the Great Mosque of Cordoba and designed using bimetallic strips.

6p viberbers 09-08-2023 4 3   Download

In this work, the temperature dependence of the anharmonic X-ray absorption fine structure (XAFS) and thermodynamic properties of the crystalline silicon (c-Si) have been investigated. The thermodynamic parameters are derived from the influence of the absorbing and backscattering atoms of all their nearest neighbors in the crystalline lattice with thermal vibrations.

11p viberkshire 09-08-2023 4 2   Download

Biodegradable cassava starch-based foams incorporated with grape stalks were obtained by thermal expansion. The morphology (SEM), chemical structure (FTIR), crystallinity (XRD), and biodegradability of the foams were evaluated. An applicability test was performed in the storage of food.

10p vihermione 06-01-2023 6 3   Download

Helical coil heat exchangers are known for their superior heat transfer, compactness and robustness against thermal expansion compared to systems with straight pipes. Due to all these benefits, they became quite popular in the last few decades in various industries such as pharmaceutical, chemical or nuclear.

12p vironald 15-12-2022 8 3   Download

In present paper "Equation of state and thermal expansion of metals with FCC structure: Application to Cu, Al and Ni", by the statistical moment method (SMM) we obtain the equation of state for metals with cubic structure at temperature 0 K and pressure P and from that obtain the expressions of lattice parameter and thermal expansion coefficient for these metals at temperature T and pressure P.

6p runordie3 27-06-2022 12 2   Download

This paper presents a design, calculation, simulation and fabrication of micro gripper driven by the electrothermal V-shaped actuator. The working principle of the V-shaped actuator bases on the thermal expansion of a thin beam when applying a voltage. The advantages of this design are large displacement amplification factor, large driving force, low voltage, simple configuration and control. The maximum displacement of each jaw can be up to 40µm at the calculated voltage of 17.35V and low operating frequency

8p spiritedaway36 28-11-2021 7 1   Download

The fall webworm Hyphantria cunea is an invasive and polyphagous defoliator pest that feeds on nearly any type of deciduous tree worldwide. The silk web of H. cunea aids its aggregating behavior, provides thermal regulation and is regarded as one of causes for its rapid spread.

22p vijeeni2711 24-07-2021 9 0   Download

In our model, the relaxation of a particle is governed by its nearest-neighbor interactions and long-range cooperative effects of fluid surroundings. On that basis, the temperature and pressure dependence of the structural relaxation time is deduced from the thermal expansion process. Additionally, we also consider correlations between the activated dynamics and the shear response in the deeply supercooled state. Our numerical calculations agree quantitatively well with previous experimental works.

10p trinhthamhodang1218 18-03-2021 11 2   Download

Thermodynamic quantities such as mean nearest neighbor distance, free energy, isothermal and adiabatic compressibilities, isothermal and adiabatic elastic modulus, thermal expansion coefficient, heat capacities at constant volume and constant pressure, and entropy of binary interstitial alloys with a body-centered cubic (BCC) structure with a very small concentration of interstitial atoms are derived using the statistical moment method.

10p tamynhan5 10-12-2020 15 3   Download

This paper describes design and calculation of an electrothermal V-shaped actuator (EVA) and an amplification mechanism integrated into a force measuring microsystem (FMMS), aims to apply for characterization of a micro beam. Displacement and driving force are generated by thermal expansion of the V-shaped silicon beams while applying a voltage to the electrodes of the EVA. ANSYS simulation helps to find out the relations between thermal force and displacement corresponding to driving voltage and determine the temperature of V-shaped beam at various applying voltages.

8p trinhthamhodang9 10-12-2020 12 0   Download

In this study, the theoretical results are applied to the interstitial alloy FeCrSi. The thermodynamic properties of main metal Fe, substitution alloy FeCr and interstitial alloy FeSi are special cases for the thermodynamic properties of interstitial alloy FeCrSi.

10p tamynhan9 02-12-2020 20 2   Download

Numerical calculations of the quantities were performed for Fe and W thin films and found to be in good and reasonable agreement with other theoretical results and experimental data. This research proves that thermal expansion coefficients of thin films approach the values of bulk when thin film is about 70 nm thick.

10p tamynhan9 02-12-2020 16 1   Download

The moment method in statistical dynamics (SMM) is used to study of thermal expansion coefficients of metallic thin films with body-centered cubic (BCC) structure taking into account the anharmonicity effects of the lattice vibrations and hydrostatic pressures. The explicit expressions coefficients of thermal expansion of metallic thin films are derived in closed analytic forms in terms of the power moments of the atomic displacements.

13p tamynhan9 02-12-2020 10 1   Download

Thermodynamic properties of rare-earth metals have been studied using staistical moment method. The analytic expressions of the Helmholtz free energy and thermodynamic quantities were obtained. Present SMM results of nearest neighbor distance, linear thermal expansion coefficient and specific heats at constant pressure for Th and Ce metals are compared with the experimental results.

7p tamynhan8 04-11-2020 11 1   Download