New ceramics related investigation of the indentation energy concept

Indentation analysis of elastic and plastic deformation of precursor-derived Si–C–N ceramics

“…Previous studies have shown that more insight into such processes is gained by the analysis of the load-unload cycle. 21,23,26 The widely studied parameters in this approach are the residual depth of penetration (h res ), total work of contact deformation (W tot ), work from elastic recovery (W el ) and the work of inelastic deformation (W pl ). The numerical values of the quantities W tot , W el and W pl can be directly obtained from the load-unload P-h cycle, as the area under the loading curve, under the unloading curve and the area enclosed by the two curves, respectively.…”

Sb effect on micro structural and mechanical properties of rapidly solidified Al–12Si alloy

“…Several analytical approaches have been developed to obtain mechanical properties from indentation loaddisplacement curve. Oliver and Pharr method (OP) and work of indentation approach (WIA) are widely adopted by researchers in order to calculate the hardness and reduced elastic modulus of the test materials [20][21][22][23][24][25]. A significant advantage of WIA is that, unlike OP, it takes the entire P-h curve into consideration, not only a part of the initial unloading curve.…”

Физико-Механические Свойства И Микромеханизмы Локального Деформирования Материалов С Различной Зависимостью Твердости От Глубины Отпечатка

“…где U = Pdn -энергия, рассеиваемая в материале при формировании отпечатка [2,34,35,[65][66][67], определя-емая как площадь, ограниченная кривыми нагружения-…”