Come on in, the Water's Fine! An Experimental Examination of Hybrid IPO Auctions with a Public Pool

2015 ◽  
Author(s):  
Charles R Schnitzlein ◽  
Minjie Shao ◽  
Ann E. Sherman
Keyword(s):  
Experimental Examination

scholarly journals Examining Ferromagnetic Materials Subjected to a Static Stress Load Using the Magnetic Method

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3455
Author(s):  
Tomasz Chady ◽  
Ryszard Łukaszuk
Keyword(s):  
Statistical Analysis ◽  
Measurement System ◽  
Rolling Direction ◽  
Hysteresis Loops ◽  
Ferromagnetic Materials ◽  
Static Stress ◽  
Magnetic Method ◽  
Experimental Examination ◽  
Stress Load ◽  
Anisotropic Steel

This paper discusses the experimental examination of anisotropic steel-made samples subjected to a static stress load. A nondestructive testing (NDT) measurement system with a transducer, which enables observation of local hysteresis loops and detection of samples’ inhomogeneity, is proposed. Local hysteresis loops are measured on two perpendicular axes, including one parallel to the rolling direction of the samples. The results confirm that the selected features of the local hysteresis loops provide important information about the conditions of ferromagnetic materials. Furthermore, it is shown that the selected parameters of the statistical analysis of the achieved measurements are beneficial for evaluating stress and fatigue changes induced in the material.

Experimental Examination of the Impact of Tool Radius on Specific Energy in Microcutting of Granite

2017 ◽  
Vol 139 (4) ◽  
Author(s):  
Miloš Pjević ◽  
Ljubodrag Tanović ◽  
Goran Mladenović ◽  
Biljana Marković
Keyword(s):  
Cutting Force ◽  
Penetration Depth ◽  
Specific Energy ◽  
Brittle Materials ◽  
Experimental Examination ◽  
Workpiece Surface ◽  
Different Shapes ◽  
Tip Radius ◽  
The Impact ◽  
Force Intensity

The paper presents experimental results of microcutting brittle materials (granite). The analysis was conceived on the observed interaction between the workpiece and two tools of different shapes. Experiment was based on scratching the workpiece surface with diamond tools. Applied tools had tip radius R0.2 and R0.15 mm. The experiment determined the changes in the value of perpendicular and tangential components of the cutting force based on the geometric properties of tools, as well as the changes of the specific energy of microcutting granite (Jošanica and Bukovik types). The experiment has shown that reduction of tool radius causes reduction of the cutting force intensity and specific cutting energy. Because of its physical/mechanical properties, more energy is required for micromachining granite “Jošanica” than “Bukovik.” Based on the topography of the surface, the value of critical tool penetration depth was established, after which the brittle fracture is no longer present. For granite “Jošanica” values of critical penetration depth are 6 and 5 μm when micromachining with tools R0.2 and R0.15 mm, while for Bukovik those values are 6.5 and 5.5 μm. The paper should form the basis for understanding the phenomena which occur during microcutting brittle materials.

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