Results 51 to 60 of about 140,919 (361)
Fracture and Structural IntegrityUltrasonic fatigue at an operating frequency of 20 kHz was conducted on thermally treated clay bricks at 500, 750, and 1000 °C with a holding time of 5 h, using a three-point bending setup to assess their fatigue endurance.
Hipólito Magdiel Venegas Montaño +4 more
doaj +3 more sources
Tribocorrosion Properties of PEO Coatings Produced on AZ91 Magnesium Alloy with Silicate- or Phosphate-Based Electrolytes [PDF]
, 2018 In this work, the tribocorrosion behavior of plasma electrolytic oxidation (PEO)-coated AZ91 samples was studied. In particular, two different coatings were produced and compared. One was obtained with an alkaline electrolyte containing sodium phosphate,
Brunelli, Katya +7 more
core +2 more sources
Indian Journal of Dental Research, 2019 Aims: The objective of this in vitro study was to find out the efficacy of Novamin in remineralizing enamel surface on which artificial caries lesion had been created. The changes were analyzed using Vickers Hardness Testing Machine and Scanning electron
A. Gangwar, K. Jha, J. Thakur, M. Nath
semanticscholar +1 more source
Development of Aluminum Scandium Alloys for Hydrogen Storage Valves
Advanced Engineering Materials, EarlyView.Different aluminum alloy series and various aluminum‐scandium alloys with differing Sc and Zr levels are evaluated for use in hydrogen storage valve production. The alloys undergo hardness testing, optical microscopy, and tensile strength analysis, with hardening behavior studied under varying conditions.
Francisco García‐Moreno +4 more
wiley +1 more source
The Effect of LED Light on Depth of Cure and Microhardness of Three Types of Bulkfill Composite
Journal of Baghdad College of Dentistry, 2016 Background: To evaluate the ISO depth of cure of bulkfill composites and depth of cure which determined by Vickers microhardness test. Materials and Methods: Bulkfill resin composite specimens (n=150) were prepared of three bulkfill composite materials (
Mohannad R A, Luma MS Baban
doaj +1 more source
Residual Stress States in Microstructurally Graded PBF–LB/M Austenitic Steel Components
Advanced Engineering Materials, EarlyView.This study examines microstructurally graded 316L rectangular tube profiles fabricated via PBF–LB/M using a dual‐laser system. A 1 kW top‐hat and a 400 W Gaussian laser create distinct grain sizes and crystallographic texture. Mechanical properties are linked to microstructural evolution driven by processing conditions.
Nico Möller +5 more
wiley +1 more source
Patria Artha Technological JournalThe purpose of this study is to determine the effect of casting temperature variations on the hardness and microstructure of used aluminium cans. The casting method used in this research is the Lost Foam Casting method with a cast temperature variation ...
Sukirman A Togubu +2 more
doaj +1 more source
Microstructure and corrosion properties of SiC/Al-Mg-Cu-Si-Sn composites
Science and Engineering of Composite Materials, 2017 The SiC/Al-Mg-Cu-Si-Sn composites with different quantities of SiC particles by volume were fabricated using hot-pressing sintering. The effects of SiC volume fraction on the microstructure, Vickers hardness, and corrosion behavior of the composites were
Shen Rujuan +3 more
doaj +1 more source
Improving the Accuracy of Low-load Vickers Microhardness Testing of Hard Thin Films
Procedia Technology, 2014 AbstractExperiments that involved the testing of different steel samples over a wide range of loads were conducted in order to investigate the influence of micro-loads on accuracy of Vickers microindentation hardness testing. We found that for the same material the Vickers microhardness decreases with the decreasing of test load. The measuring error of
László Jakab-Farkas, Gabriela Strnad
openaire +2 more sources
Sensitivity study of crack driving force predictions in heterogeneous welds using Vickers hardness maps [PDF]
, 2016 Weld flaws often require an engineering critical assessment (ECA) to judge on the necessity for weld repair. ECA is a fracture mechanics based prediction of the integrity of welds under operating conditions.
De Waele, Wim +3 more
core