(a) penetrant, (b) solvent remover, (c) developer After selection of high quality weld specimen, its goes to destructive testing for analyze the properties of material. Here Vickers hardness test and tensile test are conducted for analyze properties of material. So performing tensile test welded specimens were cut with dimension of 100 mm x 25 mm, which were further cut in to I shape. Tensile test was performed with universal tensile testing machine (Instron-600) with maximum load capacity of 600 kN. Further, non preheated, 3000C and 7000C preheated specimen were selected for microstructural study and micro-hardness measurement from each sample.
CHAPTER 3 EXPERIMENTAL PROGRAMME 3.1. GENERAL The main objet of this experimenta is to compare the properties of concrete made with and without plastic aggregates, that is used as coarse aggregate in concrete mix. Major tests carried out on materials used for casting the concrete samples are discussed in this section, a brief description about mix deign and curing procedure used and at the end, the various tests conducted on the specimens are discussed. 3.2. MATERIALS USED 3.2.1.
Table III Single point incremental forming parameter and their levels Factors Unit Level 1 Level 2 Level 3 Wall angle degrees 55 65 45 Step increment mm 0.2 0.5 1 Feed rate mm/min 500 800 1200 Spindle speed rpm 600 800 1000 The experimental work is also carried out to validate simulation results. The ASTM E8 standard is used to carry out the tensile testing. The load cell is a strain gauge based type with full wheat-stone bridge
Extrusion process Extrusion experiments were carried out using a laboratory-scale co-rotating and intermeshing twin-screw extruder (Model BC 21, Clextral, Firminy, France). The screws of the extruder were 25 mm in diameter and 400 mm in length. The barrel which contains screws was divided in to four zones; the temperature of the first, second and third zone during extrusion cooking was maintained at 40, 70 and 100oC respectively, while the temperature of the fourth zone was changed according to each run of experimental design. The die has four openings with diameter of 1.5 mm for each; extrudates were cut by controlled speed cutter with four bladed knives attached with the die. Extruder was operated by 8.5 kilowatt motor with speed range from 0 to 682 rpm.
Capacitors are two conducting plates separated by an insulating material. So when a voltage is applied across the plates, the battery works on the plate to separate the negative and positive charges on the capacitor. In lab 21 we will observe this type of charge in snap circuits by using the snap circuit kit from our lab and a stopwatch. In part two of this lab, I observed how the relationship how current, voltage and resistance are used to through a system in regards to Ohm’s Law. Introduction In lab experiment 1 we will compare difference of the capacitors of the snap circuits in series and parallel charges.
1(a)). Electricity current intensity and thickness reduction are two key factors in EARB process for an acceptable bonding of composite layers and avoiding exfoliating. Increasing the amperage cause to enhance the bonding strength among the composite layers and by increasing thickness reduction, the bond between the layers is reinforced. In the next step (Fig. 1(b)), two strips of MMC were fixed together after wire-brushing and degreasing to obtain 2 mm thickness and then were roll-bonded by 50% reduction (effective strain equal to 0.8).
3.8 Microstructure Analysis Microstructure analysis are define the structure of samples by using Field Emission Scanning Electron Microscope (FESEM). Microstructure analysis are important because it can influence the physical and mechanical properties such as strength and hardness of samples. FESEM used to identify the particle size and morphology of samples. First, the samples preparation must done before the analysis of microstructure. The samples need to grinding and polishing by using silica carbide paper and diamond paste to make the samples more smooth and shine.
The present paper provides the effect of ovality in inlet pigtail pipe bend of a hydrogen reformer under combined internal pressure and in-plane bending loading. Finite element analysis (FEA) and experiments have been used. An incoloy Ni-Fe-Cr B407 alloy material considered for study and assumed to be elastic-perfectly plastic behavior. The design of pipe bend is based on ASME B31.3 standard and during manufacturing process, it is challenging to avoid thickening on the inner radius and thinning on the outer radius of pipe bend. This geometrical shape imperfection is known as ovality and its effect needs investigation which is considered for the study.
The shape of gasket is produced by mold press. The three layer clad metal gasket is produced by cold roll process of three sheet metal and assuming: (1) sheets are fully bonded (2) metals obey the power law material model. Three layer sheet metals are assumed to be fully boded; consequently, the interface delamination is beyond the scope of this paper. The dimension of gasket used was optimum design based on previous study  with thickness (T) 1.2 mm for elastic mode, 1.5 mm for plastic mode and length (L) 19.5 mm (Fig.1). In this study the thickness of surface layer (t2) was 0.1 mm.
It is well recognized that the FFA level of oil ought to be reduced to less than 1% previous to using the alkaline catalysis [23,24]. We used two acidic catalysts; sulfuric acid as homogeneous catalyst and MWCNT-SO3H as heterogeneous catalyst were used with methanol toward esterification of WCF. Some researchers used two step pretreatment processes to reduce the high level of FFA [25,26]. Based on their work, after the first action, the reaction mixture is permitted to settle. Because of inhabitation property of water toward complete reaction, the methanol and water mixture is separated from the oil phase.