experimental investigation and modelling

Nygren et al. [27] developed a finite-element model for the crack tip deformation of SNP/epoxy and evaluated the effect of silica nanoparticle spacing on the fracture toughness of the composite. These simulation results must be confirmed by experimental microscopic characterization [28].

By combining the fuel spread model and the burning rate model, the maximum burning area was calculated and validated against the experimental data. These results are important in assessing the risks in a spill fire accident during marine transportation and conducting in-situ burning which can be used to reduce the adverse effect of the leaked ...

A new mechanism-based unified constitutive model, comprising three sub-models, has been developed to simultaneously predict the evolutions of microstructures, yield strength and work hardening properties of the artificially aged AA2050.

With an experimental setup of a laser Doppler sensor, a full-field fringe spacing estimation using a high-resolution matrix camera is performed with dual-wavelength beams. The numerical modeling and experimental results show an average relative difference below 0.6%.

Then, the developed model is verified by comparing numerical modelling results and experimental data. The parametric sensitivity is analysed with respect to several important parameters to show their influences on modelling the elastoplastic and damage behaviours of quasi-brittle rocks.

Experimental investigation included the XRD, XRF, and SEM techniques, which were also confirmed by the traditional wet chemistry analysis. Thermodynamic modeling was carried out using thermochemical software package MTDATA, which enables thermodynamic and physical properties of the matte, slag, and gas phases to be calculated in a wide range of ...

A series of experiments were performed aiming at controlling milling force-induced surface errors in the robot-assisted milling process, for the sub-area of the multi-stiffener reinforced inner wall of complex cylindrical thin-walled casting parts, to investigate the relationship between surface errors, milling forces, and robot-assisted milling parameters. Firstly, based on the design of ...

Starting from the thermo-mechanical properties measured by dynamic mechanical analysis (DMA), an FE model based on a thermoviscoelastic approach is developed, and the reliability of the model is tested by comparing its prediction with experimental results.

The experimental results suggest that the addition of the mechanical mechanism is critical for HWIPR. Based on the power law relationship, an airborne particle concentration model was developed for HWIPR.

Ren J, Zhong J, Yao L, Guan Z. Experimental Investigation and Theoretical Modelling of a High-Pressure Pneumatic Catapult Considering Dynamic Leakage and Convection.

To maximize control of this critical process and reduce its undesirable effects, numerical models of nano-second laser pulsed and multi-stack material interaction have been developed. The modeling strategy using finite elements formalism is based on the convergence of two approaches, numerical and experimental Validation.

The foam fractional flow modelling by Dholkawala and Sarma [36] was modified based on experimental results obtained in this study. The range of the ratio of two important model parameters ( Cg/Cc) at various foam qualities was determined and could be used for large-scale predictions.

In this paper, an experimental program and a CFD based mathematical model using a brush seal at two bristle to rotor clearances (0.27 mm and 0.75 mm) are presented. The experimental program examined the radial pressure distributions along the backing ring, the axial pressure distribution along the rotor, and the mass flow through the seal through a range of pressure ratios while exhausting to ...

This study addresses the critical need for a constitutive model to analyze the cyclic plasticity of additively manufactured 316L stainless steel. The …

Based on the experimental results, it is concluded that the short-circuit current increases with temperature, while the open-circuit voltage and the maximum power point decrease. For all the experimental results, the novel d1MxP model presents better fitting results.

Along with experimental investigations, a three-dimensional dynamic modelling will be provided by using Fourier expansion and state-space approach for detailed verifications.< >

Semantic Scholar extracted view of "Experimental investigation and quasi-steady modeling of nucleate boiling in mini-channel thermosyphons" by V. Scheiff et al.

Experimental investigation of ducted fan noise control by turbulence grids insertion between propellers and struts ... Theoretical model of scattering from flow ducts with semi-infinite axial liner splices," J. Fluid Mech.

Numerical analysis on the performance of DVAA are also included to instruct the design of DVAA used in experiment. The finite element model is adopted for quantitatively dynamic modeling, and a novel parametric reduced order model is presented for the electromechanical coupling system composed of blisk, DVAA and piezoelectric actuators.

A new experimental setup with optical access for experimental investigation of boundary layer flashback (BLF) in non-swirl flows was presented. A new fully automated measurement procedure was applied, which ensured the repeatability, reproducibility and nearly identical conditions.

The modeling structures of rollers, mecanum wheels, and mecanum wheeled mobile robots presented in the literature use single contact force assumption. This assumption may give good results in a sim...

Overview of Multipart Investigation 3 Part I : Validation of a Computational Model for the Vaneless Diffuser Configuration with As-Manufactured Impeller Geometry Description of the modeling approach used for all three parts Validate the model using the As-Manufactured impeller geometry against experimental data

Through model tests, the effective repair of the diversion pipe on blocking groundwater flow and the relief effect of the unsymmetrical pressure of the pipe are verified. ... Experimental Investigation on a Water Diversion Shield Segment Using a Newly Developed Model Test Chamber . by Yuxuan Sun. Yuxuan Sun. SciProfiles Scilit Preprints.org ...

By contrast, sporadic LOAD modeling remains underexplored, although late-onset AD (LOAD) represents more than 95% of AD cases and a LOAD patient-specific model system that allows the investigation of adult-onset neuropathological features remains to be established.

The phase equilibria of the Cu—Nb—Si system were investigated via a combination of key equilibrated alloys, thermodynamic modeling and first-principles calculations. Sixteen ternary alloys were prepared to determine the isothermal sections at 600 and 700 °C, by means of X-ray diffraction (XRD) and scanning electron microscopy with energy ...

We then finetuned the pretrained weights of a smaller Korean language model to the newly constructed dataset and integrated it with the crime investigation knowledgebase retrieval approach. Experimental results show LAPIS' potential in providing reliable legal guidance for police officers, even better than the proprietary GPT-4 model.

The aim of the present work is to critically review the published experimental work and optimize the Mo-Co-B system using the CALPHAD method. Experimental investigations and first-principles calculations are also applied to support the thermodynamic modeling.

The impact of urban traffic on human health is significant. This research conducts field measurements in Guangzhou, China, focusing on a building situated near subgrade roads and viaducts to investigate the characteristics of airborne and structure-borne noise generated by these infrastructures. The analysis involves the use of both sound pressure level and overall sound pressure level, as ...

Sociopolitical consequences of COVID‐19 in the Americas, Europe, and Asia: A multilevel, multicountry investigation of risk perceptions and support for antidemocratic practices.

Experimental and modelling studies of the cold chain contribute to a new research orientation which attempts to address a public health issue: food safety and quality.