Pin Tip Wear Lab Report
According to the previous paragraphs, variation of the pin motion speed changes the amount of tip wear as well as penetration into the sample. So, assessing the exact value of optimum velocity could not be done only based on the pin tip wear or its penetration into the sample. The exact optimum velocity is obtained when the pin tip penetration into the sample is high and the pin tip wear is low. In order to access such a parameter which includes both tip wear and penetration simultaneously, a new parameter called scratch excavation efficiency (SEE) has been defined as follows: Where Vscratch is the volume of the excavated scratch on the sample surface and Vpin is the volume of pin tip wear. Higher values of the SEE mean high excavation volume on the sample surface with low wear volume of the pin tip. While reducing the SEE values show decreasing of …show more content…
Cerchar tests with the pin motion speeds of 5, 10, 15, and 20mm/Sec on monomineral samples have been done using 43HRC and 55HRC pins. The obtained results show that: • The pin motion speed is an effective parameter on its tip wear. General trend is reducing the pin tip wear at the first steps of speed increasing. However, after a certain velocity, the CAI increases with increase of the pin motion speed. The trend is very similar to the results obtained in metallurgical studies. • Hardness of the pins and samples are effective on the recorded trends. The speed corresponds to the smallest value of the CAI, decreases with increasing hardness of the samples and decreasing hardness of the pins. • The calculated values of work on the pins during Cerchar tests showed that increasing the pin motion speed, decreases the values of work on the pin and its tip penetration into the sample surface. Hard pins tend to more penetrate but in higher motion speeds the difference of penetration between hard and soft pins
Pt1420 Unit 6 Lab Report
155 Words | 1 PagesSuppose you need to find the fractional European call and the fractional European put options. Let the Hurst parameter be $H=0.85$, the $\sigma=0,25$, $r=0.10$, $S_{fbm} = 100$, $K = 95$, we have \begin{eqnarray*} d_1^{fBm} & = & \frac{\ln{\frac{S}{K}} + \frac{1}{2}(r( T - t) + \frac{(1)\sigma^2{( T^{2H} - t^{2H})}}{2})}{\sigma{\sqrt{T^{2H} - t^{2H}}}}\\ & = & \frac{\ln(\frac{105}{100}) + (0.10(0.25 -0) + \frac{(1){0.25^2}{0.25^{2(0.85)} - (1)0.25^{2(0.85)}}}{2}}{(0.25){\sqrt{0.25^{2(0.85)} - 0}})} \end{eqnarray*} we obtain $d^{fBm}_1= 1.0558$. We find in the normal distribution that $N(1.0558)= 0.8544$ and $N(-1.0558) = 0.1456.$
Pillbug Lab Report
989 Words | 4 PagesAbstract: The main focus of this lab is on animal behaviors in terrestial isopods, also known as pillbugs. There are many purposes to this lab experiment. First, these pillbugs are put into four different types of enviroments, also known as chambers, light v. dark, hot vs. cold, moisture vs. dry, and lastly shelter vs. open. In these different chambers, there are 10 pillbugs, 5 placed into each individual chamber and then observed for up to 5 – 10 minutes. In this lab we observed that pillbugs prefer light areas, hot temperatures, moist environments, and lastly sheltered spaces.
Nt1310 Unit 9 Lab Report
1392 Words | 6 Pages1. Identify the range of senses involved in communication • Sight (visual communication), Touch (tactile communication), Taste, Hearing (auditory communication), Smell (olfactory communication) 2. Identify the limited range of wavelengths and named parts of the electromagnetic spectrum detected by humans and compare this range with those of THREE other named vertebrates and TWO named invertebrates. Figure 1: the electromagnetic spectrum source: www.ces.fau.edu Vertebrates Human Japanese Dace Fish Rattlesnake Zebra Finch Part of electromagnetic spectrum detected ROYGBV (visible light) detected by light sensitive cells in the eye called rods and cones.
Sports Suspension Lab Report
519 Words | 3 PagesThe experiment overall was nicely conducted, and results were found through the information gathered. The dependent variable was established very quickly; furthermore, we can find the dependent variable was whether the athletes played a contact sport or a sport like baseball, where most concussions come from being hit by the ball. The independent variable is the number of concussions the test subjects obtained. Ultimately they could not control how many concussions each individual obtained but they controlled which individuals were chosen and what test were ran. The results that ran throughout the whole experiment was an overall success, the results show that multiple compared to single occurring concussions do not have an effect on P3 suppression.
Hastings Point Lab Report
1610 Words | 7 PagesIntroduction For two days, on the 14th and 15th of April, a field excursion to Hastings Point, New South Wales was conducted. At Hastings Point, topography, abiotic factors and organism distribution were measured and recorded, with the aim of drawing links between the abiotic factors of two ecosystems (rocky shore and sand dunes), the organisms which live in them, and the adaptations they have developed to cope with these conditions. Within these two ecosystems, multiple zones were identified and recorded, and this report also aims to identify the factors and organisms associated with each zone. Lastly, using data and observations from the past, predictions for the future of the rock pool ecosystem were made.
Penny And Dime Lab Report
496 Words | 2 PagesIn this week’s lab we had to determine the density of a quarter, penny, and dime. My question was “How does is each coin?” Density is the amount of mass in an object. To find the density of each coin in this lab, we used a triple beam balance to find each coin’s mass and a graduated cylinder to find their volumes. With all this information, I can now form a hypothesis.
Clothespin Experiment Lab Report
799 Words | 4 PagesHypothesis The hypothesis of this experiment is resting beforehand will increase the rate of clothespin squeezing. Materials and Methods Materials 20 Clothespins (1 for each participant) Stopwatch/Timer 20 people Procedure For this lab, the student gathered 20 people and split them into pairs. In this experiment 10 people are going to exercise, and 10 people are going to rest.
Penny Lab Report
463 Words | 2 PagesThe purpose of this lab was to change pennies from copper to silver to gold, like alchemists have attempted to do in history. Through the data and observations gathered throughout this experiment, it can be concluded that the pennies were not changed into a different element. For example, the density of the penny from 2005; which was the penny that was experimented on to see whether or not it could turn into silver; was 4.62 g/cm3 before the experiment and 4.89 g/cm3 by the end of the experiment. If this copper penny really would have turned into silver, then the density of the penny would be 10.49 g/cm3; which is the density of silver; by the end of the experiment. The penny may have turned silver in color, but this was only because it was plated in the zinc that was added to the beaker of water in the experiment.
Nt1310 Unit 3 Lab Report
1160 Words | 5 PagesLab 1 helps create a better understand of the changes in crystal structures when the annealing and quenching process is applied to 1020 and 1080 steel. The numbered steel refers to the ASTM grain-size number. Formula 1 is used to solve for the grain size. n=2^(G-1) Equation (1) at 100x magnification Crystal structures change shapes which changes the strength of the material and its properties. The metal might become soft, brittle, hard, or ductile.
Tn 4351 Unit 5 Lab Report
506 Words | 3 PagesTn 4351 was originally isolated from bacteroides fragilis [30] . The transposon was successfully introduced into Cytophaga succinicans, Flavobacterium meningosepticum, Flexibacter canadiansis, Flexibacter strain SFI and Sporocytophaga myxococcoides by conjugation [25]. Tn 4351carries two antibiotic resistance gene. One of the codes for resistance to erythromycin and clindamycin which is expressed in bactroides but not in E.Coli. The other gene codes for resistance in tetracycline and is expressed in aerobically grpwn E. coli, but not in anaerobically grpwn E. coli or in bacteroides.
Nt1330 Unit 4 Case Study
482 Words | 2 PagesAfter I changed the rate of growth as well as years for each data line the difference begin to take form as time and growth
Pillbug Lab Report
125 Words | 1 PagesIn our experiment, we examined the behavior of isopods by conducting the experiment based on our hypothesis: “If ten isopods are put into the test chamber, 5 in sand and 5 in soil, which environment will the pillbug prefer.” We hypothesized that the isopods would favor the soil more than the sand because pillbugs are typically found in soil and not in sand. Pillbugs are favored in soil because the natural role of a pillbug is to eat dead and decaying things but, in sand there are no nutrients available for pillbugs. Pill bugs are mostly found in moist environments, due to having gills, gills only function when they are wet so pill bugs will inhabit places in which air holds a lot of water
10 Pin Bowling Research Paper
719 Words | 3 PagesIt creates a little bit more friction with the surface of the lane than the plastic ball. It is still very controllable and also creates a little hook potential. The Reactive Resin is less durable than the plastic and the urethane but it offer a lot of hook potential, friction, and pin action. It is very sensitive to the lane conditions, and operator errors. It is usually a little more difficult to control.
Garlic Root Tip Lab Report
1393 Words | 6 PagesObservation of Mitosis in Garlic Root Tips: Abstract: This practical examined garlic root tip cells for the observation of the five stages of mitosis. Mitotic division consists of five significant stages which were identified and recorded. The results revealed that the garlic root tip cells are in the interphase stage of the cell division cycle for majority of the time.
Copper Sulfate Pentahydrate Lab Report
261 Words | 2 PagesPurpose This experiment is to determine the concentration of the solute copper sulfate pentahydrate, and the unknown solution, by passing different wavelengths of light through each solution. Procedure Weigh out approximately 5g of copper sulfate pentahydrate. Record the mass and place the solute into a 50 mL volumetric flask. Fill half of the flask with distilled water, add the stopper for the flask, and lightly shake the flask, until the copper sulfate pentahydrate fully dissolved.
More about Pin Tip Wear Lab Report
Pt1420 Unit 6 Lab Report
155 Words | 1 PagesPillbug Lab Report
989 Words | 4 PagesNt1310 Unit 9 Lab Report
1392 Words | 6 PagesSports Suspension Lab Report
519 Words | 3 PagesHastings Point Lab Report
1610 Words | 7 PagesPenny And Dime Lab Report
496 Words | 2 PagesClothespin Experiment Lab Report
799 Words | 4 PagesPenny Lab Report
463 Words | 2 PagesNt1310 Unit 3 Lab Report
1160 Words | 5 PagesTn 4351 Unit 5 Lab Report
506 Words | 3 PagesNt1330 Unit 4 Case Study
482 Words | 2 PagesPillbug Lab Report
125 Words | 1 Pages10 Pin Bowling Research Paper
719 Words | 3 PagesGarlic Root Tip Lab Report
1393 Words | 6 PagesCopper Sulfate Pentahydrate Lab Report
261 Words | 2 Pages