1. a) From the 3 point bending test, the value of As-Rolled Aluminium’s Elastic Modulus was 48.3GPa

    C.grains of sand-sized particles.     D.gypsum.   Answer Key: A   Feedback: The correct answer is A. silica.     Question 19 of 33 3.03/ 3.0303 Points Which of the following is a diagnostic feature of Specimen #16?

9. Select one of the following terms to describe the crystal shape, or habit, or each specimen shown in Figure 1.8 (p. 6 lab book): cubic crystals, hexagonal crystals, fibrous habit, banded habit, blocky habit, bladed habit, tabular habit.

Measure the side length of each block along the grain. When taking a measurement, position the block so the caliper measuring surfaces are touching the end grain faces. Record the measurements to create a data set. Accuracy =.001 in

Two major laboratories have given two stones that differ markedly in overall quality the same grade. Explain

In Figure 4, Young's modulus is plotted against yield strength. The diagonal line in the figure represents the material index M= σy/E. Materials below the diagonal line are the best candidate materials because they will remain elastic while providing the maximum conformability. All materials that cost more than $2.20 per pound and have a UV rating of "poor" were eliminated. Also, only materials that can be made through the polymer extrusion process were considered. The candidate materials are listed in Table 1 and ranked by the material index. The current material, TPV, is included in the table for

Table 1 is a list of materials that were chosen to analyze. For each material their yield strength was found if they had one. If the material had no yield strength then it was listed as none.

For example, when dissolving the samples, too much liquid could have been added, affecting how saturated the solution was, and ultimately affecting the accuracy of the results. To prevent such an error, one could gradually add water and patiently mix the solution to make a saturated solution. Additionally, errors could have come from not making a solution as close to 1.0 M of the compound. In order to prevent this possible error, one could have calculated the volume of the water (in mL) needed to make the 1.0 M solution, which would result in having more precise results. Lastly, being that there are multiple calculations involved, being careful and observant in correctly recording the values could prevent simple

Experiment Two: Stiffness Report from laboratory work performed on 12 May 2011 as a part of the unit of study CIVL2201 Structural Mechanics

There could have been several variables that could have affected the results of this lab. One would have been if the salt measurements were incorrect. If more or less salt was added than realized, this would have caused the results to be incorrect. Another variable could have been the size of the potatoes being measured incorrectly. If

Modulus of elasticity also known as Young’s Modulus measures the stiffness or firmness of a material. When choosing a polymer for soft tissue replacement, we should choose a material that has a middle range modulus of elasticity. The Modulus of elasticity should not be too high because it would cause lack of mobility. On the other hand, the Modulus of elasticity can't be too low because then the soft tissue will not be able to support weight. Choosing a polymer with a middle range Modulus of elasticity allows for both mobility and

This experiment shall be repeated twice or more to enhance accuracy of the results obtained. Besides detecting systematic errors, this experiment would aid on the technique and understandings to the correct use of these equipments.

2. The procedure no. 2 to 5 was repeated as stated for fine aggregate using appropriate sieve size.

As seen in the Fig. 2, there is a dramatic increase in the hardness (31.66 to 65HRB) of the material over a

List two aspects of materials behaviour that the Drude model can’t explain but the Quantum Free Electron model can.

Where P is the applied force, L is the length of beam, E is the modulus of elasticity of aluminum, and I is the moment of Inertia.