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Although the phenomenon of organisational silence is widely seen in organisations, there is little empirical evidence regarding its nature and main components. This paper aims at investigating the dimensions of silence climate as they are perceived by individuals and exploring the effects of these dimensions on job attitudes.

In a sample of 677 employees, three dimensions of silence climate are constructed and measured in order to examine their effects on employee silence behaviour, organisational commitment and job satisfaction.

Results indicate that supervisors’ attitudes to silence, top management attitudes to silence and communication opportunities are associated and predict employees’ silence behaviour. These three dimensions are also associated with organisational commitment and job satisfaction.

Although the phenomenon of organisational silence is expected in organisations, there is little empirical evidence in the literature aimed at defining it, analysing it and coping with it. Silence climate has an impact on organizations’ ability to detect errors and learn and, therefore, organizational effectiveness is negatively affected. This exploratory study aims to measure organisational silence as a continuum between silence and voice explain silence behaviour through organisational climate dimensions. Based on the findings of this study, there are some important implications that are discussed.

The purpose of this paper is to explore the relationship between the five‐factor model of personality (FFM) and employees' voice behavior in Greece.

Employees' personality characteristics were assessed along with their voice behavior towards their supervisor and the top management of their company. Data were collected from a cross‐sectional sample of 334 professionals.

The findings demonstrate the relationship between personality and voice behavior towards the immediate supervisor, but not towards the top management of the company, and show that conscientiousness and emotional stability are the strongest predictors of employees' voice behavior.

The results of the study should be interpreted with caution, since they are based on self‐report measures. However, the findings suggest that two personality dimensions (emotional stability and conscientiousness) are significantly related with employees' voice behavior towards their supervisor.

The findings suggest important practical implications for HR practices, such as employee communication and personnel selection, since at least two personality dimensions are related with employees' voice behavior. The study also emphasizes the significance of first line supervisors' communication style in enhancing employees' voice behavior.

This is the first study exploring the relationship between the FFM and employees' voice behavior carried out in a EU‐country, such as Greece.

The purpose of this study is to investigate the bending analysis of metal (Ti-6Al-4V)-ceramic (ZrO₂) functionally graded material (FGM) sandwich plate with material property gradation along length and thickness direction under thermo-mechanical loading using inverse trigonometric shear deformation theory (ITSDT). FGM sandwich plate with a ceramic core and continuous variation of material properties has been modelled using Voigt’s micro-mechanical model following the power law distribution method. The impact of bi-directional gradation of material properties over the bending response of FGM plate under thermo-mechanical loading has been investigated in this work.

In this study, gradation of material properties for FGM plates is considered along length and thickness directions using Voigt’s micromechanical model following the power law distribution method. This type of FGM is called bi-directional FGMs (BDFGM). Mechanical and thermal properties of BDFGM sandwich plates are considered temperature-dependent in the present study. ITSDT is a non-polynomial shear deformation theory which requires a smaller number of field variables for modelling of displacement function in comparison to poly-nominal shear deformation theories which lead to a reduction in the complexity of the problem. In the present study, ITSDT has been utilized to obtain the governing equations for thermo-mechanical bending of simply supported uni-directional FGM (UDFGM) and BDFGM sandwich plates. Analytical solution for bending analysis of rectangular UDFGM and BDFGM sandwich plates has been carried out using Hamilton’s principle.

The bending response of the BDFGM sandwich plate under thermo-mechanical loading has been analysed and discussed. The present study shows that centre deflection, normal stress and shear stress are significantly influenced by temperature-dependent material properties, bi-directional gradation exponents along length and thickness directions, geometrical parameters, sandwich plate layer thickness, etc. The present investigation also reveals that bi-directional FGM sandwich plates can be designed to obtain thermo-mechanical bending response with an appropriate selection of gradation exponents along length and thickness direction. Non-dimensional centre deflection of BDFGM sandwich plates decreases with increasing gradation exponents in length and thickness directions. However, the non-dimensional centre deflection of BDFGM sandwich plates increases with increasing temperature differences.

For the first time, the FGM sandwich plate with the bi-directional gradation of material properties has been considered to investigate the bending response under thermo-mechanical loading. In the literature, various polynomial shear deformation theories like first-order shear deformation theory (FSDT), third-order shear deformation theory (TSDT) and higher-order shear deformation theory (HSDT) have been utilized to obtain the governing equation for bending response under thermo-mechanical loading; however, non-polynomial shear deformation theory like ITSDT has been used for the first time to obtain the governing equation to investigate the bending response of BDFGM. The impact of bi-directional gradation and temperature-dependent material properties over centre deflection, normal stress and shear stress has been analysed and discussed.

In this work, the effect of porosity volume fraction, porosity types, material grading index, variable disk profiles and aspect ratio on disk performance was studied by performing limit elastic speed analysis of functionally graded porous rotating disks (PFGM) under thermo-mechanical loading.

The composition change was varied by employing the power law function. The thermo-mechanical properties of PFGM such as Young's modulus and yield strength were estimated using modified rule of mixture, for density and coefficient of thermal expansion rule of mixture was used. The even and uneven distribution of porosity in a disk was taken as uniform, symmetrical, inner maximum and outer maximum. The problem was then solved with the help of the variational principle and Galerkin's error minimization theory.

The research reveals that the grading parameter, disk geometry and porosity distribution have a significant impact on the limit elastic speed in comparison to the aspect ratio.

The study determines a range of operable speeds for porous and non-porous disk profiles that the industry can utilize to estimate structural performance.

A finite element investigation was conducted to validate the findings of the present study. Limit elastic analysis of porous FG disks under thermo-mechanical loading has not been studied before.