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Showing 1 to 16 of 16 for “"hardness test"”.
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Improving the polishing process for Rockwell hardness test block
Inefficiencies in a Rockwell hardness test block manufacturing process were analyzed. The polishing stage was identified to be the bottleneck with a high reworking rate. An understanding based on the physics of polishing was the first step. Then a DOE analysis was implemented to find the optimum …
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Discrete event simulation and production system design for Rockwell hardness test blocks
… production volume and decreasing costs at a hardness test block manufacturer. A discrete event simulation model is created to investigate potential system wide improvements. Using the results from the simulation a production work-cell is proposed that will allow a single worker to operate 7 …
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Heat treatment optimization in the manufacture of Wilson Rockwell steel hardness test blocks
… in the manufacture of Wilson Rockwell steel hardness test blocks often produces parts which are inconsistent in the mean hardness and hardness uniformity. In this thesis, the sources of variation in the mean hardness and hardness uniformity of the test blocks are identified by means of …
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Development of a robust heat treating process for Rockwell B-scale hardness test blocks
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997, and Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1997.
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The preparation of a polyurethane elastomer and evaluation of the mechanical properties
… elastomer, solvent absorption and swelling tests, tensile properties test and hardness test. Three groups of polymer material were prepared. In the first group the R value was varied from 1.0 to 4.5, (the ratio of 33’ Bitolyene 44’ diisocyanate to polyester) and fixed amounts of excess …
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Distribution and dispersion of metals and their economic potential: a case of the Fumani Tailings Dam, Limpopo Province, South Africa
… Gold using AAS as well as geotechnical tests using sieve analysis. Profile logs as well as pH logs revealed that the tailings dams were highly oxidized at the surface of the tailings dams to about 2 m. The average pH revealed that the entire tailings is slightly acidic to neutral. X-ray …
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Variations in the manufacturing of Rockwell test blocks
… occurring in the manufacturing of Rockwell hardness test blocks. Test blocks of different materials and hardness were analyzed and the variations were identified using the Ishikawa method. Random samples of 5 blocks were inspected for various parameters such as average thickness, flatness, …
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An Investigation of Geopolymers for Use In High Temperature Applications
… quenching with water. A nondestructive surface hardness test is also developed to determine compressive strengths at high temperatures. Specimens are also exposed to molten metal to simulate corium dropping onto the materials during a core meltdown.
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Friction material (metal reinforcement) analysis of brake pad for light rail train system
… commercial available brake pad. Three different testing which are density and porosity test, shore hardness test and wear test were done in order to select which metal is the most suitable for railway application. Different composition were used, (Cu30%BaSO430%), (Cu25%BaSO435%), (Cu20%BaSO440%), …
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Optimizations and recycling industrial waste (palm oil fly ash) as a pigment in coating technology
… coating ability to withstand from the paint testing. In general, this research hopes to improve the technology of coating and also can be a significant contribution in the academic, research, development and field studies related to the paint technology. The optimum preparation and thermal …
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A comparative study on wear and corrosion behaviour of tungsten carbide-nickel (Wc-Ni) and tungsten carbide-cobalt (Wc-Co) high velocity oxy-fuel (HVOF) for carbon steel blade
… (EDS), and x-ray diffraction (XRD). The hardness test was carried out by using Vickers micro-hardness tester with load of 490.3 mN (0.05 HV). The wear and corrosion behavior and mechanism for both coatings was compared. Three body wear test was carried out in term of weight loss and …
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Analysis of sintered WC-TIC-6CO by using powder metallurgy process
… (XRD), Energy Dispersive Analysis (EDS), Hardness Test and Grain size analysis. The physical properties of WC-TiC-6Co was performed by using density test. At holding time 30 min, WC-0.75 wt. %TiC-6Co shows the highest density and hardness with the value of 10.2185 g/cm3 and 102.3966 HV …
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Experimental and Numerical Modelling of Gasket Materials and Property Correlation
… program has been developed to study the shore hardness testing of rubber materials principally used for gasket applications. The correlation between shore hardness and linear elastic and hyperelastic properties has been systematically investigated. A detailed FE model of the shore A hardness …
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Efavirenz pre-formulation study : selection of a cyclodextrin inclusion complex or co-crystal complex for tabletting
… ratio, moisture content, disintegration time, hardness/resistance to crush, manufacturing process problems and particle size of the CTRC and HP-β-CD were all evaluated. The CTRC was ultimately selected for formulation of a tablet. The preparation of small laboratory scale of EFA/CTRC co-crystal …
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Irradiation damage in neutron-irradiated Fe-Cr model alloys
… irradiations were carried out at Advanced Test Reactor with target doses of 0.01, 0.1 and 1 dpa and target irradiation temperatures of 300 and 450°C. Following irradiations, the resulting microstructure were investigated with transmission electron microscopy (TEM), atom probe tomography …
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Analýza mechanických vlastností plastových vzorků zhotovených technologií 3D tisku
Diplomová práce se zabývá stanovením mechanických vlastností vybraných materiálů používaných pro 3D tisk (PLA, PETG, ABS, ASA). Teoretická část práce obsahuje charakteristiku polymerních materiálů, rozebírá mechanické zkoušky a aditivní technologie. V experimentální části byly normalizované vzorky, …