Coatings deposited on a material surface are effective way of changing its properties. For increasing or decreasing radiation heat transfer, coatings with high low emissivity used. Measurement spectral is fundamental step to use for this application. Up now the measurement methods focused bulk samples and mainly opaque ones. Here we present method enabling semitransparent coating itself, although it substrate. The based transmittance reflectance using an integration sphere system Fourier...

Numerical simulation of industrial reheating furnaces belongs to important procedures for an optimization their design and processing parameters. A 3D numerical model a continuous gas burners heated walking-beam furnace is introduced in this paper. The main benefit the compromise between its complexity computing speed. connects empirical knowledge. It based on Hottel zonal method compartment solution heat transfer process solids. allows specifying charge, heating system includes convective...

Abstract Thermal barrier coatings (TBCs) are widely utilized in gas turbine engines for power generation. In recent years, the application of TBCs automotive has been introduced to improve engine efficiency. Low thermal conductivity and high durability desired coating properties both automotive. Also, suspension plasma spraying (SPS) permits a columnar microstructure that combines properties. However, it can be challenging deposit uniform on complex geometry, such as component or piston...

A three-dimensional model of direct heat treatment a sample surface with moving laser has been established utilizing the finite element method. Attention is devoted to preparation complex boundary conditions source. Boundary material are defined in form transfer coefficient consideration several effects. Those include general distribution energy beam, motion velocity, axis position outside sample, and utilization multiple tracks over sample. Various arrangements proposed computer simulated....

The paper deals with the measurement in continuous industrial furnaces. Measuring technique and measuring device are presented. Temperature evolutions measured on experimental billet records of furnace heating‐control system shown. Furnace distributions temperature, heat flux, transfer coefficient determined by means heating process computer modeling.

A computer simulation model of billet heating process in continuous pusher‐type furnace is presented. The Exodus stochastic method used to solve the heat conduction partial differential equation. This paper deals with application optimal heating‐control system. comparison computed results measurement presented show capabilities model.

Infrared non-destructive testing method (IRNDT) is suitable supplement to classic methods (NDT).The advantage of IRNDT fast and non-contact measurement evaluation that available various industrial research applications.The for both production process inspection (material inhomogeneities, inner structure multilayer parts, cracks, ...) subsequent component during service (cracks, layers delamination, etc.)The possibility defects detection influenced by parameters, geometric orientation...

Internal combustion engines have a key role in the social and economic advancement of modern society but also significant contribution to greenhouse gas emissions. For these engines, preserve their role, higher efficiency, that dramatically reduces environmental impact, is necessary. To achieve increased engine technical solution lower heat losses chamber. Among them, pistons are preferential route, due extensive impact on fuel consumption. In this paper, porous thermal barrier coatings with...

For precise non-contact measurement of surface temperature using an infrared camera or pyrometer, it is very important to ensure a high and known emissivity value. A low possibly unknown value makes difficult nearly impossible evaluate the measurement. Thermographic paint one possibilities emissivity. Different types specially designed thermographic create homogeneous layer accurate measurements. paints are exposed various external conditions during application, including surrounding...

This paper deals with the application of stochastic Exodus method in simulation heat transfer processes multi-layer structure thermal barrier coating.A 2D computer model behaviour during its dynamic loading is presented.The has been applied to solve indirect problem order determine TBC surface temperature and flux from temperatures measured inside sample.Comparison results result thermography measurement presented show capabilities model.

Infrared camera comparative measurement methods of thermally optical properties materials are based on the infrared radiation emitted from surface material that is heated to a higher temperature. These compare response analyzed with set reference called standards. Standards made commonly used those should be compared. Within these methods, comparison effect thermal conductivity expressing conduction heat transfer in sample and/or combined and emissivity its cooling evaluated. The...

The aim of the contribution is to present current computational capabilities and results thermomechanical processes simulation in industrial furnace. Three-dimensional model continuous pusher-type furnace employed mild rolling mill has been created. resultant velocity temperature distributions inside furnace, heat flux coefficient transfer charge surface have important used support development optimization control system for

The aim of the contribution is to present current computational capabilities and results thermomechanical processes simulation in industrial furnace. Three-dimensional model continuous pusher-type furnace employed mild rolling mill has been created. resultant velocity temperature distributions inside furnace, heat flux coefficient transfer charge surface have important used support development optimization control system for