Engineering

We will continue to identify any general issues about the content of the course – specifically, the cases – that you are unclear about or would like further discussion of. Identify at least two major issues arising from the cases that you think deserve further discussion, and say why you believe this is so.Have a crack at answering questions posed by your colleagues, or at least suggesting places they might go to get further information about resolving their questions. Help one another out as you study the course materials.

Role Description: Geotechnical EngineerThe purpose of this exercise is to negotiate a settlement to the dispute in Case VI from Chen (1988). You may make the following assumptions:The case is in mediation.The state of Colorado spent $850,000 to correct surface drainage problems around the facility and to repair interior walls and floors damages by swelling soils.The contractor has already made a settlement with the state of Colorado. No details of that settlement are known.Your role is to protect the interests of your company. You are mostly concerned about the reputation of your company but cost is still a significant issue. The legal cost of defending yourself has already cost you three times what you were paid by the state for the work you performed on this project. You believe your recommendations were correct and clear and you did nothing wrong. You think the root of the problem lies with the owner who wanted a Mercedes at a Nissan price and was too stupid and cheap to follow your original recommendation to locate the school in a different area or use a structural floor with an air gap between the floor and the expansive soil. In spite of the fact that you know you’re right, you realize that you have an incentive to settle the dispute during mediation. If this goes to court it will only increase your losses on this project. You want to settle this dispute and maintain your firm’s good reputation at the same time.PreparationIn order to prepare for the negotiation prepare a list of facts for and against each of the three parties in the mediation.OwnerArchitectGeotechnical EngineerSubmissionProvide your lists of facts for and against each party in a single .pdf or .docx file format. Make sure you have access to this file when we meet as this will be helpful to you as you try to come to a resolution.

.1. Wood product typesa) Why are hardwoods more expensive than softwoods?b) Name one example of a softwood and three examples of a hardwood.c) What are the advantages and disadvantaged of natural wood? List at least two of each.2.Engineered Wood (also known as Manufactured Board)a) Name three types of engineered wood other than plywood.b) What are the advantages of using engineered wood versus using natural wood?c) Name at least three advantages of plywood.d) How does laminated veneer lumber differ from plywood?

(i) The British Plastics Federation (BPF) is the world’s longest running plastics trade association, established in 1933 to represent the UK industry. BSF want to support the education institution along with the industrial partner to support the setting up the polymer laboratory in the universities. In the process of setting up the injection moulding machine in UCLAN a trial experiment was conducted on the thermosetting plastics. A force, F will inject a given weight of an epoxy thermosetting polymer into intricate mould of the injection moulding machine in two different time and temperature scale, i.e., 30 s at 180 degrees Celsius and in 85 s at 162 degrees Celsius. If the viscosity of the epoxy thermosetting polymer follows an Arrhenius law of diffusion, with a rate of process proportional to???? 2 s-1,exp ? m????????calculate how long the process will take at 237 degrees Celsius.(6 marks)(ii) Discuss the possible behaviour of this material in relation to creep and compare it with the possible behaviour of a thermoplastic taking into consideration the main polymer structure characteristic of both. Compare the equation to model the injection with the equation to model creep.

Control Volume Methods Purpose:The purpose of this lab is to gain hands-on experience using control volume methods to analyze systems of general and engineering interest.Introduction:Control volume methods provide powerful tools to gain “big-picture” information about various engineering systems without knowing much about the actual complicated flow patterns within the system.In this lab, you will do two experiments. In Experiment A, you will explore a fairly complex pump / turbine system and use the mechanical energy balance equation along with various physical measurements to approximate losses in the system. You will also determine the overall system efficiency. In Experiment B, you will consider a simple falling liquid jet and apply the integral form of conservation of mass to explain the observed shape of the jet.Include all of your work as an appendix after the “Literature Cited” section in your report.Experiment A: Efficiency of a Pump/Turbine SystemMaterials:· Pump and Liquid Turbine Apparatus· Ruler· Tape MeasureGiven measurements:· Inner diameter of steel pipe: 1.375 in· Height for Control Surface 2: 19.75 inProcedure:1. Fill the top and bottom tanks high enough that water is just above the base of the weir triangle that connects the tanks. When doing this, make sure that the plug between the upper and lower reservoirs is not inserted into the drain.2. Make sure the tank has a water level matching zero on the flowrate indicator located on the side of the tank.3. Ensure the valve between the pump and turbine is open. Do this by turning the valve four complete counter-clockwise turns (use the blue tape for reference).4. Insert the plug between the upper and lower reservoirs.5. Carefully have a group member walk behind the apparatus and quickly turn the black power dial from “0” to the “3” setting. This is low speed.6. Turn the valve clockwise until the valve is fully closed. The blue tape should be pointing toward the Bourdon gage.7. Turn the valve two full revolutions counter-clockwise (cc).8. Wait at least 15 seconds for the system to reach a steady-state.9. Record the gage pressure head (ft), the flowrate Q (L/s), and the height (in) from the bottom of the lower chamber of the tank to its free surface.10. Repeat Steps 5-8 three additional times, but now, turn the valve one half revolution for each iteration. At the end of this procedure, the valve should be at three and a half revolutions cc from the “closed” position.11. Turn the black power dial back to the “0” setting.12. Press the circular, red “Stop” button to shut off the pump.Report Results:· Assuming a constant rate of pump power input (W?P ? 0.5hp), determine an equation (in terms of known quantities) for the rate of mechanical energy lost (W ,1 ) in the section ofthe system stretching from the surface of the bottom reservoir, through the pump, through the piping, and up to the cross-section at the pressure gage.· In Excel or MATLAB, plot W ,1 vs Q using your recorded data and derived equation. Thisgraph should have labeled axes, a title, and a figure number (placed below the graph).· Assuming that the turbine extracts 60% of the mechanical energy input from the cross- section at the pressure gage (?T ? 0.6 ), determine an equation for the total rate of energyoutput by the turbine (WT ) and the overall efficiency of the system (?sys ? W?T W?P ).· In a second graph, plot ?sysvs Q. Once again, include all required labels.Report Discussion:· Comment on sources of error in this experiment.· List and explain all assumptions made to derive the equations used in your analysis. Were these assumptions valid throughout the experiment or only for certain aspects? Explain why or why not.· Comment on probable sources of head loss in the system. Which do you believe were the most substantial? Why?· Were your values of ?sys as expected? Why or why not?· What effect did opening and closing the valve have on the measured pressure, the flow rate, the rate of mechanical energy loss, and the overall system efficiency? Based on your analysis, why is this the case?

The assessment requires you to consider a single existing problem related to poor productivity in the construction industry, relating to one of the 8 forms of lean waste. Once you have selected a single problem and can define the problem in relation to lean waste, you need to critically analyse the potential solutions formulated from the module and provide considered solutions to the problem, with clear links between the problem and the potential solutions.

Electronic Packaging Fundamentals Course Project ReportAutomotive MEMS and Sensors TechnologyINTRODUCTIONMicro-electromechanical systems (MEMS) are developed as a result of technological advancement in integrated circuits and micromanufacturing, and its technology has become the backbone of many sensor technologies in automobiles. Although faced with many challenges such as device miniaturization, quality, and reliability testing, and high cost from packaging and testing, emerging solutions such as MEMS packaging standardization and wafer level testing can be adopted to overcome these setbacks.LITERATURE REVIEWDevice Miniaturization [1]Device miniaturization has been the ongoing trend in the electronic industry, and the demand for advancement in MEMS technology reflects the drive as well. The recent development in autonomous vehicles and portable devices are calling for higher integration of MEMS sensors to support its increasing capabilities. As these devices increase in function and complexity, the available footprint within the device is continuously limited by the ever-decreasing device size. The manufacturing technique that enables the production of MEMS technology is bulk surface machining, where layers of mechanical structures and features are created through a combination of etching and layer deposition. As the demand for smaller and more intricate features rises, the industry must provide an answer in terms of improved and more advanced manufacturing techniques to address the miniaturization trend.Component Testing [2]Many MEMS devices serve as accelerometers, gyroscopes, and sensors for critical data acquisition applications; therefore, the reliability and quality of these devices must be ensured. Extensive reliability testing is performed at the device or package level to ensure that the product meets requirements and specifications. When it comes to testing MEMS products, both electrical and mechanical analysis is required for a thorough examination of the product performance. The coupling relationship of the mechanical parts with electrical circuitry results in a complex system that requires unique testing equipment. The cost of testing equipment and setups such as testing stations can easily exceed millions of dollars in capital investment from the device manufacturer. The Challenge of high testing cost poses a roadblock in the MEMS market and innovative solutions are needed for a cost-saving solution.MEMS and CMOS Integration [3]As shown in Fig. 1, MEMS structure is often coupled with integrated circuitry to perform sensing and analysis of the acquired data. The industry’s drive to lower the production cost and device size calls for the tackling of the challenge in MEMS and CMOS process integration. The current method for system integration involves the manufacturing of the MEMS and electrical circuitry on different substrates, and interconnects or direct bonding of the two chips are performed for device integration. This approached is forced by the high cost associated with monolithic integration. Challenges foreseen within the industry would be to lower the cost associated with the integration of MEMS with IC fabrication.

Classical Control System Design Spring 2021Matlab ProjectCompensator Design & SimulationObjectiveYour term project will be to design and simulate PI compensators for a control system using Matlab/Simulink (using Octave is also accepted).System ModelFYI, a possible block diagram of a speed control scheme for a hybrid electric vehicle driven by a dc motor isWith typical values of the parameters, the system can represented in a simplified unity-feedback form as followswhere R(s) is the reference voltage, C(s) = KssV (s) is the output voltage of the speed sensor, and GSC(s) denotes a controller (to be designed).AssignmentTask 1. Proportional compensation Assume GSC(s) is a proportional (P) controller, i.e., GSC(s) = KP .(a) Find the closed-loop system transfer function and determine the range of KP > 0 for stability.(b) For the uncompensated closed-loop system (i.e., with KP = KP1 = 1):—Simulate and plot the system unit-step response c(t).—Determine (from the plot) the P.O., peak time Tp, rise time Tr, settling time Ts, and steady-state error estep(?) in % of the input—Find also eramp(?) =? —Plot the Bode diagrams and indicate the bandwidth, and the phase and gain margins.(c) Find KP = KP2 that yields a steady-state error estep(?) = 1%.

A coil, having both resistance and inductance, has a total effectiveimpedance of 50 ? and the phase angle of the current through it withrespect to the voltage across it is 45° lag. The coil is connected inseries with a 40 ? resistor across a sinusoidal supply (Fig. 10.15). Thecircuit current is 3.0 A; by constructing a phasor diagram, estimatethe supply voltage and the circuit phase angle.

Entities:Employees (Employee code, Full name, Age, Sex, Address, Phone number, Passport data, Position code).Positions (Position Code, Position Name, Salary, Responsibilities, Requirements).Rooms (Room Code, Name, Capacity, Description, Cost, Employee Code).Services (Service Code, Name, Description, Cost).Clients (full name, passport data, check-in date, check-out date, room code, service code 1, service code 2, service code 3, cost, employee code).Queries:Human Resources Department (joins the “Employees” and “Positions” tables by the “Position Code” field).Numbers (joins the “Employees” and ” Rooms” tables by the “Employee Code” field).Clients (Joins the tables “Clients”, “Rooms”, “Services” and “Employees” in the fields “Rooms code”, “Service code”, “Service code 1”, “Service code 2”, “Service code 3” and “Employee Code”).Parameter queries:Display employees of specified positions (based on the request “Human Resources”).Display clients living in specified rooms (based on the “Clients” query).Display rooms of specified capacities (based on the request “Numbers”).