Diametral compression test method to analyse relative surface stresses in thermally sprayed coated and uncoated circular disc specimens

Faisal, Nadimul Haque; Mann, Lewis.; Duncan, Conor.; Dunbar, E.; Clayton, Michael.; Frost, Mark; McConnachie, J.; Fardan, Ahmed; Ahmed, Rehan

doi:10.1016/j.surfcoat.2018.10.053

Cited by 15 publications

(10 citation statements)

References 40 publications

(66 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All experiments were repeated at least five times with similar conditions. If F (in N) is the load provided at the time of the rupture, D (in mm) the diameter of the disk‐like sample and H (in mm) its height, the compressive strength through diametrical compressive test in MPa is determined using relation () 31–34 . The results presented in this paper are mean values of the five measurements.

σ = \frac{2 F}{π D H}

…”

Section: Methodsmentioning

confidence: 99%

Use of a kaolinitic‐illitic clay from Central African Republic and an organic waste for the production of porous ceramic materials

Deramne

Lecomte‐Nana

Peyratout

et al. 2020

Int J Ceramic Engine & Sci

View full text Add to dashboard Cite

show abstract

σ = \frac{2 F}{π D H}

…”

Section: Methodsmentioning

confidence: 99%

Use of a kaolinitic‐illitic clay from Central African Republic and an organic waste for the production of porous ceramic materials

Deramne

Lecomte‐Nana

Peyratout

et al. 2020

Int J Ceramic Engine & Sci

View full text Add to dashboard Cite

show abstract

“…It was performed using an Instron traction and compression press (Instron, France). If F(in N) is the load provided by the press at the time of the rupture, R (in mm) the radius of the test sample disk and H (in mm) its height, the compressive strength through diametrical compression (σ in MPa) is given by the Equation () 38‐40

σ = \frac{F}{S} = \frac{F}{π R H} = \frac{2 F}{π D H} with D = Diameter (italicmm)

…”

Section: Methodsmentioning

confidence: 99%

Effect of the plant waste onto the properties of use and the microstructure of phyllosilicates based ceramics

Deramne

Lecomte‐Nana

Peyratout

et al. 2020

Int J Applied Ceramic Tech

View full text Add to dashboard Cite

The present study aimed at using plant waste (Musa Paradisiaca) for manufacturing clay-based ceramics in order to promote lower sintering temperature while preserving the properties of use. Two kaolinic-illitic clays (NZ1 and KO) from Central African Republic were used mixed with 1 to 10 mass% of the plant waste (MP). The clays and the waste exhibited accessory phases: quartz and iron oxides, and K 2 O respectively. MP was collected, dried and sieved (<100 μm) previously to its mixture with clays. According to the sintering behavior of KO and NZ1 derived from thermodilatometry, the densification was obtained after firing at 1200°C. Results showed that open porosity decreased from 35% to 17% with increasing temperature in the range 900 to 1200°C for KO and NZ1. This porosity remained in the range 30%-40% while increasing the MP content (firing at 1000°C for 1h.). The optimized MP content was 3 and 5 mass% for KO and NZ1 clay materials respectively. The compressive strength and thermal conductivities were improved compared to clay samples without MP fired at 1200°C. Moreover a significant decrease in the sintering temperature was achieved, leading to energy saving in line with sustainability issues. K E Y W O R D S clays, plant waste, properties of use, silicate ceramics, sintering | 2639 SEREWANE DERAMNE Et Al.

show abstract

“…In the example shown (Fig. 8), the yield stress of the Hastelloy-X® substrate is taken as 385 MPa and for Mo-Mo 2 C/Al 2 O 3 it is taken as 770 MPa (at zero plastic strain) [40]. It is important to note that the yield stress value for coatings considered are for bulk materials with limited relevance to such coatings.…”

Section: Stress Calculationsmentioning

confidence: 99%

Measuring Residual Strain and Stress in Thermal Spray Coatings Using Neutron Diffractometers

et al. 2021

Self Cite

View full text Add to dashboard Cite

Background During thermal spray coating, residual strain is formed within the coating and substrates due to thermo-mechanical processes and microstructural phase changes. Objective This paper provides a comprehensive guide to researchers planning to use neutron diffraction technique for thermal spray coatings, and reviews some of these studies. Methods ENGIN-X at the ISIS spallation source is a neutron diffractometer (time-of-flight) dedicated to materials science and engineering with high resolution testing. The focus is on the procedure of using ENGIN-X diffractometer for thermal spray coatings with a view that it can potentially be translated to other diffractometers. Results Number of studies involving neutron diffraction analysis in thermal spray coatings remain limited, partly due to limited number of such strain measurement facilities globally, and partly due to difficulty is applying neutron diffraction analysis to measure residual strain in the thermal spray coating microstructure. Conclusions This technique can provide a non-destructive through-thickness residual strain analysis in thermally sprayed components with a level of detail not normally achievable by other techniques. Neutron sources have been used to measure strains in thermal spray coatings, and here, we present examples where such coatings have been characterised at various neutron sources worldwide, to study residual strains and microstructures. Graphic Abstract

show abstract

Diametral compression test method to analyse relative surface stresses in thermally sprayed coated and uncoated circular disc specimens

Abstract: Diametral compression test method to analyse relative surface stresses in thermally sprayed coated and uncoated circular disc specimens.

Cited by 15 publications

References 40 publications

Use of a kaolinitic‐illitic clay from Central African Republic and an organic waste for the production of porous ceramic materials

Use of a kaolinitic‐illitic clay from Central African Republic and an organic waste for the production of porous ceramic materials

Effect of the plant waste onto the properties of use and the microstructure of phyllosilicates based ceramics

Measuring Residual Strain and Stress in Thermal Spray Coatings Using Neutron Diffractometers

Contact Info

Product

Resources

About