This paper aims to explore the effect of O2 on the nano-indentation of diamond cubic silicon using molecular dynamics simulation. Obtained with the aid of the Tersoff potential for Si–Si interactions and the Morse potential for all other interactions, the results show that on indentation, the O2 molecule in the appropriate position and orientation dissociates into oxygen atoms, penetrates into ...

abstract   statement of problem: hertzian indentation test has been proven to be an efficient and reliable alternative upon vickers hardness test. this method has been used to test dental ceramics, amalgams, glass ionomers and luting cements.there is limited published information about the load-bearing capacity of resin composites using hertizian indentation test. objectives: to investigate the...

The possibility of a third phase, often referred to as the interphase, in polymer composites is well known, and there have been many attempts to characterise the mechanical properties of this region at the nanoscale. Despite the increasing resolution of nano-indentation and atomic force microscopy techniques, it is not always possible to identify thin interphases when the dimensions are similar...

In this paper, the numerical simulation for nano-indentation is performed to measure time-dependent behavior of polymeric films. The possibility to extract the relaxed shear modulus of the polymer is evaluated using a rigid ball indenter. The viscoelastic behavior of the polymer was represented by the standard model. The effects of Poisson’s ratio are also discussed.

The effect of the embedding medium on the nano-indentation measurements of lignocellulosic materi­ als was investigated experimentally using nano-indentation. Both the reduced elastic modulus and the hardness of non­ embedded cell walls were found to be lower than those of the embedded samples, proving that the embedding medium used for specimen preparation on cellulosic material dur­ ing nano-...

Acrylonitrile butadiene styrene (ABS) and polycarbonate (PC) are considered a well-known class of engineering thermoplastics due to their efficient use in automotive, 3D printing, electronics. However, improvement toughness, processability, thermal stability is achieved by mixing together ABS PC. The present study focuses on the understanding surface mechanical characterization acrylonitrile bl...