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On the propagation of methodological uncertainties in Depth Sensing Indentation data analysis: A brief and critical review
(Pergamon-Elsevier Science Ltd, 2020-04)
A systematic and critical review about the propagation of uncertainties related to the Depth Sensing Indentation data analysis standard procedures and its effect on the estimation of Young´s modulus of materials is reported. ...
Depth sensing indentation of organic-inorganic hybrid coatings deposited onto a polymeric substrate
(Elsevier Science Sa, 2012-09-03)
PEO-Si/SiO2 hybrid coatings deposited onto a PVC substrate were micromechanically characterized using depth sensing indentation. The effect of curing time and coating thickness was investigated. Elastic moduli of coated ...
Determination of the Drucker–Prager parameters of polymers exhibiting pressure-sensitive plastic behaviour by depth-sensing indentation
(Elsevier, 2011-04-14)
It is presented in this paper a method to determine the Drucker-Prager parameters of pressure-dependent elastic perfectly-plastic polymeric materials by means of depth sensing indentation. This is achieved via an inverse ...
Atomic force microscopy nano-indentation for testing mechanical properties in thin films
(Elsevier, 2019-07)
We study the mechanical properties of Cu thin films on Si (100) by performing nano-indentation using an atomic force microscopy. Cu films with thickness of 0.3 μm, 1 μm and 2 μm were analyzed. Area profile studies let us ...
Energy dissipation in depth-sensing indentation as a characteristic of the nanoscratch behavior of coatings
(ELSEVIER SCIENCE SA, 2009)
Wear behavior of coatings has usually been described in terms of mechanical properties such as hardness (H) and effective elastic modulus (E*). Alternatively, an energy approach appears as a promising analysis taking into ...
Determination of elastic modulus of gelatin gels by indentation experiments
(Elsevier, 2015-07)
Mechanical characterization of hydrogels is a challenging task because they are much softer than metals, ceramics or polymers.The elastic modulus of hydrogels is within 100 -102kPa range. Because they easily break and slump ...
Nano-indentation of hybrid silica coatings on surgical grade stainless steel
(Elsevier Science Sa, 2008-01)
Hybrid silica-based coatings with tetraethoxysilane (TEOS), methyltrietoxysilane (MTES), hydroxyethyl-methacrylate (HEMA) and methacrylopropyl-trimethoxysilane (γMPS) as precursors, were employed to improve the performance ...
Poly(acrylic acid) surface grafted polypropylene films: Near surface and bulk mechanical response
(Budapest University of Technology and Economics, 2008-08)
Radical photo-grafting polymerization constitutes a promising technique for introducing functional groups onto surfaces of polypropylene films. According to their final use, surface grafting should be done without affecting ...
Creep behaviour of injection moulded polyamide 6/organoclay nanocomposites by nanoindentation and cantilever-bending
(Elsevier, 2011-04-28)
The creep behaviour of injection moulded PA 6/organoclay nanocomposites was studied by depth-sensing nanoindentation and DMA cantilever-bending. The glass transitions of PA 6 and its nanocomposites were decreased below ...
Mechanical and fracture behavior of gelatin gels
(Chapman & Hall, 2013-06-21)
Hydrogels were prepared from bovine and porcine gelatin powders of different Bloom values. Gelatin concentration and pH were selected to obtain self-supporting gels with stiffness in the range of those employed in structural ...