Description Research the case study on “Exxon Valdez accident” of 1990 in your textbook and on the internet and answer the following questions: (use the template: Evaluating the Case Study). What were the causes of the incident? What regulations were passed as a result of this incident? What is sustainability? Describe how LCA (Life Cycle Assessment) helps in developing environmental friendly products? (write at least 2 paragraphs). Review the Academic Centers for Sustainability in the Case Study 39: “Sustainability” and discuss how considerations of ethics might enter into the collaborative efforts of centers and institutes for sustainability. (use the template: Evaluation of Case Study)
Description How does the National Society of Professional Engineers Code of Ethics promote safety, health and welfare to the public/society? (write at least 3 paragraphs) Read the case study 6: “Citycorp” and analyze the situation of substantial risk. Discuss the ethical and safety issues involved and steps taken to resolve those issues. (use the template: Evaluating the Case Study)
Description ASSIGNMENT -- MINI PROJECTS The assignments below were due this Wednesday. In addition, please complete the following mini projects: 1. BELT DRIVES: A 2-hp electric motor running at 1720 rpm is to drive a blower at a speed of 240 rpm. Select a V-belt drive for this application and specify standard V belts, sheave sizes, and the resulting center distance. The motor limits the center distance to at least 22 in. 2. CHAIN DRIVES: A roller chain is to transmit 90-hp from a 17-tooth sprocket to a 34-tooth sprocket at a speed of 300 rpm. The load characteristics are moderate shock with abnormal service conditions (poor lubrication, cold temperature, and dirty surroundings). The equipment is to run 18 h/day. Specify the length and size of chain for a center distance of about 25 pitches. 3. SPRING: Design a helical compression spring for a static load of 400 N at a deflection of 45 mm with a safety factor of 2.5. Use C=8. Specify all necessary parameters to manufacture the spring. State and justify all assumptions. 4. GEAR: Design a spur gear set transmitting 5-hp with a pinion speed of 1600 rpm and a speed ration of 3.5 for use in a propeller gear box. The center distance should be no more than 18 in. Provide justification for your decisions. 5. BEARING: A bearing is to carry a radial load of 2875 lb and a thrust load of 1350 lb at a shaft speed of 600 rpm. Assume a design life of 15, 000 hours and a bore diameter of 2.5 in. The reports should be done professionally and typed with well-illustrated drawing using Creo or ACAD.
Description For case studies 1 carry out an assessment of all hands-on case studies and produce an assessment comprising: – a description of the structural system explaining purpose and function. – a condition report covering the current state of the structure and fitness-for-purpose – likely consequences of a failure – highlight safety critical features requiring focussed structural integrity analysis – a proposal for the non-destructive inspection (NDI) stating the features to be considered, type of defect that may be present and NDI techniques to be deployed. Remember that cost, access, time and operator safety are factors in deciding which NDI methods to propose (photos, diagrams and sketches may be used). In addition to the above tasks, where some defects have already been identified each group should: – use failure analysis techniques as appropriate, to determine if the system is safe to operate and an expected life of operation. – justify decisions showing clearly your structural integrity calculations (e.g., FAD analysis). – suggest remedial actions to mitigate the effects of each defect This example of an early autoclave was comprises an inner pressure vessel and outer water cooling jacket. A crack has been detected in the inner pressure vessel casing in the longitudinal direction. Currently, this appears to be a surface crack with a depth of 50% of the inner wall thickness and 100mm long. Question: Determine a safe working internal pressure that can be used to ensure that this crack does not propagate and cause a complete failure of the inner vessel. Determine a safe working pressure to allow at least 10,000 pressure cycles before the crack becomes critical.
Description Skeletal muscle makes up 40-45% of body weight (i) State the different types of skeletal muscles fibres and explain the difference between them? (ii) What is the pennation angle and in what way does it influence force production of a muscle? (iii) In literature, a standard measure is used to approximate the number of fibres of a whole muscle. a. What is this standard measure? b. How is this standard measure calculated? c. How does the force-length curve vary with small and large values of this parameter?
Description Upon discussion of the tensile data with other engineers (Question 1) you are advised that nanoindentation testing of the human cortical bone may be useful. What motivation is there for using nanoindentation for determining bone mechanical properties? Your answer should be no more than 250 words and you should cite any reference(s) you use to support your arguments. (Question 1:attachment)
Description (you must find the problems to solve them, I do not have the textbook) Solve the following problems from Chapter 9 – “Kirchhoff’s Laws” of Grob's Basic Electronics textbook. SECTION 9–1 Kirchhoff’s Current Laws Problems 9-2 and 9-4 SECTION 9–2 Kirchhoff’s Voltage Laws 9-6 to 9-14 (Even problems only) SECTION 9–3 METHOD OF BRANCH CURRENTS Problem 9-16 SECTION 9-4 Node Voltage Analysis Problems 9-18 and 9-20 Show all work for full credit in a word document or on a paper and scan your work. Save all your work as a word or a pdf file format. Save file as “HW7_StudentID” with your student id substituted into the file name and upload it.
Description Discuss two of your own life or work experiences that you feel have enabled you to develop skills which you will be able to transfer to your professional career. NOTE: my career is related to ICT as i have done IT, so i am expecting the answer to be related to this field
