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On the Application of Vickers Micro Hardness Testing to Isotactic Polypropylene [PDF]
Polymers, 2022 Hardness is a useful measure of a material’s resistance to permanent indentation; but for viscoelastic polymers, hardness data are highly dependent on the test type and the parameter set chosen. Vickers microhardness testing is used to leave small indents (<150 µm) and is shown to be applicable to polymers.
Hao Wu +7 more
semanticscholar +5 more sources
Vickers Hardness Value Test via Multi-Task Learning Convolutional Neural Networks and Image Augmentation [PDF]
Applied Sciences, 2022 Hardness testing is an essential test in the metal manufacturing industry, and Vickers hardness is one of the most widely used hardness measurements today.
Wan-Shu Cheng +5 more
doaj +3 more sources
Electrodeposition of Ni-Co Alloys and Their Mechanical Properties by Micro-Vickers Hardness Test [PDF]
Electrochem, 2020 Nanocrystalline Ni-Co alloy deposits with grain sizes less than 30 nm were produced by electrodeposition with a direct current in a sulfamate bath. Surfaces of the Ni-Co alloy deposits showed granular morphology. The size of the granular particles and the Co content decreased when a lower current density was applied.
Yiming Jiang +5 more
semanticscholar +5 more sources
Evaluation ofr-value of steels using Vickers hardness test [PDF]
Journal of Physics: Conference Series, 2012 The plastic strain ratio (Lankford value, r-value) is an index of mechanical anisotropy of sheet metals. The Vickers hardness is measured to determine the r-value. Tensile and indentation tests of three kinds of commercial steel sheets are conducted in directions 0°, 45° and 90° to the rolling direction.
Kazutoshi Ohashi +2 more
semanticscholar +4 more sources
Computer simulation of stress distribution during Vickers hardness testing of WC-6Co [PDF]
Materials Research, 2006 This paper describes a numerical simulation and experimental study of the Vickers indentation testing of WC-6Co specimens. The numerical analysis was implemented by a three-dimensional finite element (FE) model using the commercial solver MARC™. Hardness values predicted by this model agreed well with those obtained experimentally.
Avelino Manuel da Silva Dias +2 more
openalex +7 more sources
Determination of Film Thickness Through Simulation of Vickers Hardness Testing [PDF]
Materials Research, 2017 In recent decades, changes in the surface properties of materials have been used to improve their tribology characteristics. However, this improvement depends on the process, treatment time and, essentially, the thickness of this surface film layer. Physical vapor deposition (PVD) has been used to increase the surface hardness of metallic materials ...
Maxwell Santana Libório +2 more
openalex +7 more sources
, 2020 A calibration is an activity to determine the conventional validity of the appointment value of measuring instruments and measuring materials by comparing them to standard measurements that are traceable to national and international standards for ...
Dodi Dodi Sofyan Arief +4 more
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Conventional Vickers and true instrumented indentation hardness determined by instrumented indentation tests [PDF]
Journal of Materials Research, 2010 We evaluate Vickers hardness and true instrumented indentation test (IIT) hardness of 24 metals over a wide range of mechanical properties using just IIT parameters by taking into account the real contact morphology beneath the Vickers indenter. Correlating the conventional Vickers hardness, indentation contact morphology, and IIT parameters for the 24
Kang, Seung-Kyun +4 more
openaire +6 more sources
Procedia Structural Integrity, 2023 Materials’ properties evaluation represents a crucial aspect for the static and seismic assessment of existing Reinforced Concrete (RC) structures and infrastructures. While concrete's mechanical characteristics are classically investigated by both destructive tests (DTs) and non-destructive tests (NDTs), for steel reinforcing bars the use of NDTs is ...
Silvia Caprili +7 more
openalex +3 more sources
Effects of high temperature with pressure polymerization on the physical and mechanical properties and dimensional changes of 3D-printed denture teeth resin [PDF]
BMC Oral HealthBackground The optimal post-treatment methods for improving the mechanical properties and degree of conversion of three-dimensional (3D)-printed denture teeth resin remain unclear.
Shanglin Wu +5 more
doaj +2 more sources