Optimization of small-particle plasma-sprayed alumina coatings using designed experiments

Plasma Sprayed Bioceramic Coatings on Ti-Based Substrates: Methods for Investigation of Their Crystallographic Structures and Mechanical Properties

“…This in turn has brought the necessity of more precise evaluation and control of the micro-structure parameters and technological conditions during plasmaspraying. As a result, further improvement of the existing and development of new experimental and theoretical methods and models for prognosis, investigation and control of the structure formation processes, technological parameters and operational properties has been provoked (Azarmi et al, 2008;Chen et al, 1993;Fan et al, 2005;Iordanova & Forcey, 1997;Kuroda & Clyne, 1991;Liu et al, 2005;Mawdsley et al, 2001;Moreau et al, 2005;Parizi et al, 2007;Sampath et al, 2003;Sarikaya, 2005;Toma et al, 2003). The main aim of this general trend for research and investigation, observed at present, is optimisation of the plasma-spraying technology to achieve superior parameters of the deposited bioceramic coatings enabling their successful and reliable long-term utilisation in a wide range of biomedical applications.…”

“…New methods for non-destructive control, including statistical evaluation of the collected data, together with prognosis of the coating parameters as a function of the technological conditions have been offered as well (Zhu & Ding, 2000). Some work has already been done to characterise the following main dependencies that play an important role for successful performance of the discussed biomedical coatings (Azarmi et al, 2008;Boulos et al, 1993;Celik et al, 1999;Chen et al, 1993;Choi et al, 1998;Dyshlovenko et al, 2005;Fan et al, 2005;Gueorguiev et al, 2008aGueorguiev et al, , 2008cIordanova & Forcey, 1997;Khor et al, 2004;Kreye et al, 2007;Kuroda & Clyne, 1991;Leigh & Berndt, 1997;Li & Khor, 2002;Liu et al, 2005;Lugscheiber et al, 1993;Mawdsley et al, 2001;Montavon et al, 1997;Moreau et al, 2005;Neufuss et al, 2001;Ohmori & Li, 1991;Parizi et al, 2007;Sampath et al, 2003;Sarikaya, 2005;Srinivasan et al, 2006;Staia et al, 2001;Streibl et al, 2006;Toma et al, 2003;Tong et al, 1996;Wallace & Ilavsky, 1998;Zhu & Ding, 2000):…”

Study of proposed internet congestion control mechanisms

“…Here, we are guided by experiment design theory [89], as developed by statistical researchers and as applied in rigorous scientific and engineering studies [95]. A major scale reduction is achieved by lowering k to a small number of levels (or values), typically 2 or 3.…”

“…Adopting the convention of a two-level experiment allows us to produce the kind of OFF designs often used in engineering studies [88,89,95] and to benefit from the positive effects such designs have on related analysis techniques. For this reason, we decided to choose two levels for each factor in our sensitivity analysis.…”

Optimization of Atmospheric Plasma Spray Process Parameters using a Design of Experiment for Alloy 625 coatings

“…The optimization can be a very complex and time-consuming process. Therefore, a Design of Experiments (DOE) approach for the optimization of processing parameters for coating structures is commonly employed (Ref 7,8). The statistically designed experiments and multiple regression analysis are used to determine the effects of processing parameters on mechanical and microstructural properties of coatings.…”