Riham Mohammad Samir Hegazy <br/><br/>
Effect of geometrical and dimensional tolerances of hardness indenters on the uncertainty and accuracy of hardness meaurements /  
 تأثير الاخطاء الهندسية وتجاوزات الابعاد للجسم الناقر على قيمة اللايقين والدقة فى قياسات الصلادة 
Riham Mohammad Samir Hegazy ; Supervised Mahmoud G. Elsherbiny , Ali E. Abuelezz , Mohy S. Mansour 
 - Cairo :   Riham Mohammad Samir Hegazy ,   2011 
 - 142 P. :   charts , facsimiles ;   30cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Engineering - Department of Mechanical Design and Production 
<br/><br/> Hardness is a measure of a material's resistance to local deformation caused by an indentation from a hard body . Measurement of hardness on materials is one of the most useful mechanical tests for understanding the surface properties of these materials . Hardness is quite often used in the field of Tribology as the sensitive criteria for judging wear of metals and alloys 
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<br/><br/><label>Subjects--Index Terms: </label>Brinell hardness  Uncertainty  Vickers hardness