Results 11 to 20 of about 80,900 (240)
Vickers and Knoop Indentation Microhardness Study of β-SiAlON Ceramic [PDF]
Acta Physica Polonica A, 2011 In this paper, analysis and interpretation of mechanical property measurements of fl-SiAlON ceramic were reported. Indentation microhardness of fl-SiAlON ceramic was measured using the Knoop and Vickers indenters. The analysis of the Vickers indentation microhardness data reveals the reverse indentation size eect that is the apparent microhardness ...
Güder, H.S. +5 more
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Advances in Materials Science and Engineering, 2018 In this paper, the stress distribution field in front of the crack tip was obtained by loading a modified WOL specimen using a bolt. Considering the relationship between microhardness and hydrogen content or internal stress in the metal, a model based on
Lei Gu +3 more
doaj +2 more sources
Influence of storage temperature on vickers microhardness of resin composite [PDF]
Journal of Dentomaxillofacial Science, 2018 Introduction: The purpose of this study is to evaluate the effect of three storage temperatures on microhardness of high and low viscosity bulk-fill materials and compare them with conventional resin-based composite materials. Materials and method: Six composite resin-based materials were used in this study (TN, TNB, TNF, FZ250, FB and FBF ...
Alomozainy, Mayyadah
core +3 more sources
Journal of Dental Research, Dental Clinics, Dental Prospects, 2015 Background and aims. Polymerization efficacy affects the properties and performance of composite resin restorations.The purpose of this study was to evaluate the effectiveness of polymerization of two micro-hybrid, two nano-hybrid and one nano-filled ...
Tahereh-Sadat Jafarzadeh +7 more
doaj +2 more sources
Effect of indentation load and time on knoop and vickers microhardness tests for enamel and dentin [PDF]
Materials Research, 2009 The aim of this study was to determine the effect of variations in indentation load and time on the Knoop and Vickers hardness numbers (KHN and VHN) for enamel and dentin.
Chanya Chuenarrom +2 more
doaj +2 more sources
Flexural Strength and Vickers Microhardness of Graphene-Doped SnO2 Thin-Film-Coated Polymethylmethacrylate after Thermocycling [PDF]
, 2023 Removable dental prostheses are commonly fabricated using polymethylmethacrylate, a material that does not have favorable mechanical properties and needs reinforcement with particles such as graphene.
Mumcu, Emre +13 more
core +2 more sources
Ultra-microhardness testing procedure with Vickers indenter [PDF]
Surface and Coatings Technology, 2002 Abstract Depth-sensing indentation equipment is widely used for evaluation of the hardness and Young's modulus of materials. The depth resolution of this technique allows the use of ultra-low loads. However, aspects related to the determination of the contact area under indentation should be cautiously considered when using this equipment.
Antunes, J. M. +4 more
openaire +2 more sources
Evaluation of Different Zirconia Surface Treatments on their Microhardness [PDF]
Al-Rafidain Dental Journal, 2020 Aims: To investigate the effect of mechanical and chemical surface treatments including (AL2O3 —110µm) and citric acid solution (30%) on the microhardness of zirconia ceramic.
Mohammed Riyadh Abdulateef +1 more
doaj +1 more source
Evaluation of Chemo-mechanical Caries Removal (CarisolvTM Gel) on Primary Teeth: A Microhardness Study [PDF]
Al-Rafidain Dental Journal, 2012 the purpose of this study was to compare the Vickers hardness of sound dentin after carious tissue removal using the chemo–mechanical method and the conventional rotary method.
Baydaa A Al-Rawi
doaj +1 more source
Effect of Disposable Sheaths on the Vickers Microhardness of Resin Composites
Clinical and Experimental Health Sciences, 2021 Objective: The aim of this study was to evaluate the effect of disposable sheaths on microhardness of resin composites. Methods: A total of 40 resin composite specimens were fabricated with perspex molds (5x2 mm). Specimens were divided into 4 groups: Irradiated by 1-Elipar LCU only (EL), 2-Elipar LCU with sheath (ELS), 3-Valo LCU only (VL), 4-Valo ...
Meltem TEKBAŞ ATAY +2 more
openaire +4 more sources