since Knoop hardness test is a micro-hardness test so it can be used to measure the hardness of single grain
Which hardness method can be used to measure hardness of a single grain ? A. Rockwell...
Brief Background Penetration hardness is a measure of a materials resistance to indentation. The Rockwell Hardness test is a standard method for characterizing this property of a material. It uses a small indenter, either a hardened ball or diamond cone (Brale), which is pressed into the sample while measuring depth of penetration. There are several scales to select from as indicated in textbook or the chart found in lab. Each scale refers to the type of indenter used and the...
31. A manufacturing company has 2 different instruments they use to measure the Rockwell hardness of an object. They believe that one of the instruments may not be working properly, and giving readings that are not completely accurate. To test this, they do the following. They take a large sheet of metal, and cut it into 60 different pieces, and randomly divide the pile in two. They believe it is safe to assume that the hardness of the metal is...
7. The firure below shows Vickers hardness impression in garnet. The indentation Soad ws 069 N In Lecture 11, you learn how the hardness, is related to the yield strength (a) Using the 6 um sale marker to measure dimensions, estimate the beness of net and hence its yield strength (2.4 GP, 800 MPa) b) Indentation can also be used to estimate the fracture ohness of a material the cracks stop growing when the stress t asty factor drops to...
Please explain every thing. Please write in the paper and then take a photo. 2.59 The Brinell hardness test is used to measure the indentation hardness of materials. It involves penetration of an indenter, in the form of a ball of diameter D (mm), under a load P (kg) as shown in Fig. 2.13a. The Brinell hardness number (BHN) is defined as 2P where A (in mm2) is the spherical surface area and d (in mm) is the diameter of...
Which method was used to measure thermal conductivity of Starlite?
Which of the following are made of single cell? a. spore b. pollen grain c. seed d. egg e. ovule f. sperm g. zygote
Ion exchange is used to remove water hardness of a well water, which has a total hardness of 450 mg/L as CaCO3. The ion exchanger has leakage hardness of 15 mg/L as CaCO3. The percentage of water that is bypassed and blended is 30%. What is the final water hardness in the finished or treated water most nearly? A. 105 mg/L as CaCO3 B. 110 mg/L as CaCO3 C. 125 mg/L as CaCO3 D. 150 mg/L as CaCO3
The digital hardness of an integer is measured by examining its representation in binary (base 2). Working from the ends of the representation inward, we remove/count corresponding pairs of leading and trailing 1s until we can no longer do so. The total number of 1s (bits) removed is the original number's digital hardness value. For example, suppose that we have an integer whose binary representation is 110101010101 (the binary representation always begins with a leading 1). We remove the leading...
Which of the following physical properties can be used to measure temperature using a thermometer?A. volumeB. pressureC. densityD. viscosityI think the correct answer is D?
Which of the following compound is used in making polyethylene terephthalate (PET)? (A) (С) о (8) C (D) о НО ос со НО нс с н сон сон U O Select one: О (А) (В) (c) (D)