Experimental design and modelling in the investigation of process parameter effects on the tribological and mechanical properties of r.f.-plasma-deposited a-C:H films

1999 ◽  
Vol 122 (2-3) ◽  
pp. 150-160 ◽  
Author(s):  
H Ronkainen ◽  
J Koskinen ◽  
S Varjus ◽  
K Holmberg
Keyword(s):  
Mechanical Properties ◽  
Experimental Design ◽  
Process Parameter

Research on Process Parameter Optimization of the High-Neck Flange Closed Rolling Based on the Orthogonal Experimental Design

2014 ◽  
Vol 494-495 ◽  
pp. 461-465 ◽  
Author(s):  
Bao Shou Sun ◽  
Zhe Hong ◽  
Long Qing Xu ◽  
Xue Dao Shu ◽  
Bo Qin Gu ◽  
...  
Keyword(s):  
Experimental Design ◽  
Parameter Optimization ◽  
Rotational Speed ◽  
Rolling Process ◽  
Process Parameter ◽  
Orthogonal Experimental Design ◽  
Feed Speed ◽  
Initial Blank ◽  
Two Factors ◽  
Deform 3D

This paper simulates the process of the high-neck flange closed rolling on DEFORM-3D and optimizes the rolling process parameter by analyzing the results based on the orthogonal experimental design. For the high-neck flange, the results show that the effects on ellipticity are in the order of the mandrel feed speed, the main roll rotational speed and initial blank temperature. The former two factors show the significance while the initial blank temperature does not show that.

Attainment and Characterization of the Thermosetting Polymer Loaded with Barite to be Used in the Manufacture of Isolating Plates to Bar the X-Ray Radiation

2006 ◽  
Vol 45 ◽  
pp. 1429-1434
Author(s):  
Leila Figueiredo de Miranda ◽  
Antônio Hortêncio Munhoz Jr. ◽  
Terezinha Jocelen Masson ◽  
Virgínia Carolina Naime ◽  
Gustavo Camargo Costa
Keyword(s):  
Mechanical Properties ◽  
Experimental Design ◽  
Apparent Density ◽  
Weight Ratio ◽  
Average Density ◽  
Radiological Protection ◽  
X Ray ◽  
Protection Area ◽  
Properties Of Composites

The properties of composites based on thermosetting polyester and barite for use in the radiological protection area have been investigated with the objective to study the effect of different variables in the attainment of composites. To verify the efficiency of the composites produced in relation to radiological protection, lead was adopted as reference. A factorial experimental design was carried out and the studied variables were: type of polyester resin (orthophthalic or isophthalic), coupling agent (titanate or organosilane) and the ratio of resin to accelerator, catalyst and barite. The variables analyzed were: efficiency for barring the X-radiation, apparent density and mechanical properties. The effect, obtained from the experimental design, due to ratio of resin to barite in the apparent density was 0.036. The average apparent density of the samples produced with barite/resin value equal 2.0 (weight ratio) was 2.16g/cm3, while the average density of the samples produced with the weight ratio of barite/resin equal 3.0 was 2.2g/cm3. It was observed same trend for the density to mechanical properties. It was observed that the samples attenuated X-ray radiation adequately up to 116 kV.

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