## CHEM 113C Physical Chemistry

### Task in CHEM 113C Physical Chemistry

(I) Consider a system of N non-interacting oscillators which are described by (i) classical CHEM 113C Physical Chemistry

(ii) quantum mechanics.

A) Derive the partition function Q for both cases, i.e., classical and quantum. Remember to take into account the the zero-point energy in the quantum mechanical description. (Note: you derived the two partition functions for a single oscillator in Homework 3.)

B) Use the partition function you obtained in the previous step and derive the expression for the internal energy of both systems. Where appropriate, use the following identities:

ddxsinh(x) = cosh(x)andcoth(x) = cosh(x)sinh(x)

C) Using the expressions for quantum and classical internal energies, determine at what conditions the two solutions will become the same (low or high temperatures)? Pay attention to the low T limit – if you knew the system’s behavior at low temperatures, would you be able to decide whether it is composed of quantum or classical oscillators? Sketch the internal energy as a function of T, derive the limit of the internal energy as T → 0 (see the hint below), and provide a detailed explanation to all the questions.

Note: you will need to inspect the behavior of hyperbolic cosine function – use the fact that for coth(x) we find the following:

limx→0+ coth(x) ≈1x(II) In this example, you will compute the partition function and the internal energy of ideal gas using only classical mechanics (i.e., you will not rely on the translational partition function). Assume that the system is composed on N identical particles in a reservoir of volume V ≡ Lx · Ly · Lz. The particles behave purely classically, they interact neither with each other nor with the surroundings, and their energy is purely kinetic. The energy is not composed of discrete levels, because we assume that the particles behave classically.

A) Compute the partition sum of the N-particle system:

Q =Z Z Z Lx,Ly,Lz0,0,0Z Z Z ∞−∞e−PNj=1 βEj (px,py,pz) dxdydzdpxdpydpzh3N,

where h is the Planck constant introduced to make the integrand dimensionless; x, y, z represent three cartesian coordinates, and px, py, pz are the momentum components in 1 three cartesian directions. The exponent contains the sum over energies of all particles (labeled j). Show that the result will be in the following form

αN VN T32 N

where α is a constant. Solve for Q and determine the expression for α.(Note that you can decompose the triple integration into a product of Gaussian integrals.)

B) Compute the internal energy of the system from the expression for Q you have obtained in the previous step. Does it agree with the expression you know from basic thermodynamics? Does it agree with the result derived using the translational partition function (see the lecture notes and slides). Provide a detailed reasoning.

(III) We will investigate an (over)simplified model for protein-ligand docking. Consider a situation in which the ligand binding is described by the Hooke’s law, i.e., the force depends linearly on the distance (d) between the protein site and the ligand with a force constant ˜k. The corresponding energy of the system thus depends on d continuously (hence we resort to classical description of the bond).

A) In the canonical ensemble of protein-ligand bound pairs, show that the probability to find a ligand at distance d is a Gaussian functionP(d) = q

−1e−β12kd˜ 2

Find the full expression for the probability and compute the partition function q. Show that q is a simple term that depends on the force constant ˜k and temperature T.

B) Using the probability distribution from the previous step, derive the expression for the average distance hdi at given temperature T. Recall that (in general) the average quantity of some function O(x) is computed as:

hOi =Z ∞0O(x)P(x)dx,where P(x) is the probability function.

You will use the following integrals:

Z ∞0x exp(−ax2)dx =12a and Z ∞0exp(−ax2)dx =12rπa

C) You found the probability to find a ligand at distance d in the first step; what is the standard deviation of the distribution and how does it explicitly depend on temperature?

D) Use the expression for the partition function q and derive the average energy of a protein-ligand bound pair in the ensemble. We assume that the energy depends merely on the distance d, i.e., our model is effective one-dimensional. Does your result agree with the equipartition theorem you know from basic thermodynamics?

(IV) When gas molecules are weakly bound to the surface of a catalyst, they can still “jump around”, i.e., they can move on the surface. Effectively, we can model this situation by a two-dimensional ideal gas in which we consider only translational motion of otherwise non-interacting particles.

A) Derive the partition function Q of an ensemble of N indistinguishable molecules of an ideal gas in two dimensions. Use only the translational degrees of freedom. Compared to the qtrans we derived in the lecture, the partition function will now depend on the area of the surface.

B) Use the partition function you have obtained in the previous step and compute the internal energy of the system. Compare your result with the internal energy of the 3D ideal gas and argue why the 2D result is expected from the equipartition theorem.

(V) Proton has a nuclear spin angular momentum and interacts with a static and homogeneous external magnetic field H~

0. The energy states of protons depend only on the orientation with respect to the external field; due to quantization of space only two orientations exist with energies ±γ|H~0|, where γ is a proportionality constant (itself composed from other elementary constants). Consider a canonical ensemble of N protons and derive an expression for the partition function and internal energy. Simplify the expression as much as possible and make use of hyperbolic functions; show all the steps of the derivation

CHEM 113C Physical Chemistry

## ENG762S2 Advanced Materials

(a) Carbon fibres are considered as a material for composite part in a wind turbine structure. ENG762S2 Advanced Materials

a) Calculate the theoretical strength of the carbon fibres by assuming a carbon-carbon bond length of 0.15 nm, a material surface free energy of 50 mJ/m2 and an elastic modulus of 1 TPa.

b) Sketch a Lennard-Jones curve for the carbon-carbon bonds in the carbon fibre and show a comparable Lennard-Jones curve for copper fibres where the strength and elastic modulus of the copper is lower than for carbon. Clearly indicate the differences between the two materials.

c) Sketch a diagram to show carbon fibre production. Your diagram should clearly indicate the three temperature treatments required in the production and name each of these temperature treatments.

(b) The composite uses the carbon fibres with 50% in a 45° and 50% in a -45° orientation to improve fatigue resistance. An epoxy with an elastic modulus of 1 GPa and a low-grade carbon fibre with an elastic modulus of 200 GPa are used in the composite.

(i) State the Krenchel equation that can be used to predict the elastic modulus of the composite.

(ii) Calculate the orientation factor for the composite.

(iii) Calculate the resultant elastic modulus of the composite assuming the length efficiency factor is 0.8.

(iv) Suggest how the resultant composite elastic modulus would vary compared to your answer in

(iii) for fibre orientation approaching Voigt and Reuss conditions.

Task 2

The simply supported beam in Fig. T2 carries two concentrated loads.

(a) Derive the expressions for the shear force and the bending moment for each segment of the beam.

(b) Sketch the shear force and bending moment diagrams

Task 3

The main components of the artificial hip are the femoral stem that is fitted into the bone, the ball attached to the stem and the acetabular cup that is fixed into the pelvis. The property constrains on the materials to be used for these elements are very strict because of chemical and mechanical complexity of the hip joint.

(a) What are the main material requirements for hip implants? Briefly justify each point.

(b) What materials are currently used for the femoral stem and acetabular cup? Discuss their advantages and disadvantages.

(c) How is the implant secured to the bone? Describe the two main strategies and related implication in surgical outcome.

Task 4

Consider a polymeric tibial insert that is subjected to a simplified stress state involving a compressive normal stress of 20 MPa and an applied shear stress of 2 MPa as shown. The compressive yield strength for this polymer is 30 MPa and the tensile yield strength is 20 MPa. The Poisson ratio is 0.46 and its elastic modulus is 1 GPa.

Calculate:

(a) The effective (von Mises) stress for this implant.

(b) The factor of safety against yield.

ENG762S2 Advanced Materials

## ME 228 Computer Graphics

### Task in ME 228 Computer Graphics

A. Follow the Chapter 12 tutorial from pages 12-5 to 12-28. Create a drawing file with three standard views. Add the 3 standard views. From the top view, create a full section view that displays the thickness of the shell of the dryer. You do NOT need to add dimensions to this drawing sheet. Submit both the part file, drawing file, and pdf of the drawing. ME 228 Computer Graphics

B. Model the Trombone Body shown on the second page of this assignment. Use the loft, sweep, and shell tool for full points. From the top view, create an appropriate full section view. This section view will take the place of the front view of the part and show the thickness of the trombone body. You do NOT need to add dimensions to this drawing sheet. Submit both the part file, drawing file, and pdf of the drawing.

C. Download the Blade Hub from blackboard. Create a drawing sheet with a front view. From the front view create two section views on the sheet, a half section view that will become the top view of the part and an full section, auxiliary view so that the profiles of the screw holes can be seen. You do NOT need to add dimensions to this drawing sheet. Submit only a pdf of the drawing.

D. Complete the following workbook pages neatly. Please use a straight edge when you can and a template if you have one. Scan or take photos of the pages and upload to assignment 8.
ME 228 Computer Graphics

## Kin285 Biomechanics

Objective:
The purpose of this lab is to demonstrate the law of conservation of angular momentum. Specifically, it demonstrates the way in which this law affects the relationship between moment of inertia and angular velocity and provides a practical basis for understanding the basic principles related to angular momentum. To complete this assignment, you’ll need to watch the video for Lab #4 (and conduct the experiment yourself if you can) and answer the questions below. Make sure your answers to the questions are complete, concise and well constructed. Do not answer in point form.  Your answer should describe and explain the phenomena you observed and demonstrate that you have a thorough understanding of the principles involved. Kin285 Biomechanics
Experiment 1:

Watch the video Lab #4 – Angular Momentum and find an object that you can stand or sit on that will spin freely (i.e., an office chair or fitness turntable; e.g., http://www.aliexpress.com/item/Magnet-Balance-Rotating-Trimmer-Fitness-Core-Waist-Twisting-Disc-Weight-Loss-Fitness-Equipments-Twister-Plate-turntable/32268258532.html). To perform the experiment yourself, abduct both arms to 90 degrees (relative to your body) so that they’re horizontal (parallel) to the floor. Spin yourself or have a partner grab one of your arms and slowly rotate you in either the clockwise or counterclockwise direction.  Once you’ve completed approx. ½ a revolution, pull your arms in towards your chest as quickly as possible for several seconds before returning your arms to their original position.  Repeat the procedure several times. Describe in detail exactly what happens. Explain why this behaviour occurs.
Experiment 2:

Repeat Experiment #1 holding a 5 lb. weight in each hand. Try to initiate the rotation at the same speed as in Experiment #1.  Describe how this behaviour compares with the behaviour in Experiment #1.  Explain why it is different.
Experiment 3:

Stand on the turntable in the anatomical position (or sit in the chair with your arms and legs extended and your feet off the floor). Hold a 5 lb. weight in each hand and as before, abduct both arms 90 degrees so that they’re parallel to the floor. With your arms, initiate a forceful negative (clockwise) trunk rotation by horizontally adducting your left arm 90 degrees about the longitudinal axis to the midline while moving your right arm in the same direction. Repeat this motion in the opposite direction (i.e., initiate a + rotation). Describe what happens in each case. Provide an explanation for the phenomena you observed.

Experiments 1, 2 & 3:

Explain how all of the above experiments demonstrate the principle of conservation of angular momentum. In what circumstances does this principle not apply? Provide an example from one of the experiments. Kin285 Biomechanics

## MECH41000 Fundamental Of Mechanics And Thermofluid

Your assignment is consisting of theoretical as well experimental components. This assignment overall includes 100 marks which is about 33% of your final marks for this module. The theoretical part includes 65% and practical will form 35% of your this assignment. The quality of reporting will be also accommodated in your final scores. After you have done the assignment, you need to prepare a report including a document ideally 2000-3000 words. MECH41000 Fundamental Of Mechanics And Thermofluid

This document includes

1) Title page Including name for the document, your name, Id and contact detail

2) Abstract including your brief understanding of thermodynamic science and how this knowledge helps you did the assignment. You can also mention some of the most important findings during solving the questions in the assignment. Abstract should not be more than 250 words.

3) Including brief literature review about groundbreaking findings of thermodynamic and how thermodynamic helps us improve our life on earth.

4) Methodology: including the concepts that helps you solving the questions in the assignment.

5) Result and discussion: including results of the questions in this assignment involving graphs tables, numbers if appropriate.

7) Including your understanding of thermodynamic and should encompass the knowledge you acquired through lectures as well as in tutorials or even by doing this assignment.

8) you need to mention either any online sources or scientific article to prepare document.

The quality of your report plays a significant role in your final marks and include 10% of assignment. It should be clear, uniform, and continuous covering the aforementioned requirement. Your report should be in Arial 12 with single line spacing the way this document is. It should be fit into A4 page with 2 cm indentation from every corner of the document. The titles and heading can be larger with 14 font size.

The diameter of piston is 50 cm. In the cylinder, there is air 100 kg at 20 oC at 101325 Pa when the stone is not still touching the piston. Determine:

a) Velocity of stone at threshold of contacting the piston.

b) Total energy that air will receive from the stone. (g = 9.8 m/s2)

c) The change of internal energy of the air. If the stone collides the piston and rest top of it, the air is losing 100 J energy during expansion at constant pressure.

d) The temperature of air after fall of stone. (Cp=1.01 kJ/kg.K)

e) To what extent the piston is going down in cm. (assume the ideal gas condition for air at this condition, Pv=nRT)

f) Now consider that the stone bounce off the cylinder and piston finally take it initial state and be at the same location with gaining 100 J at constant pressure.

Determine the temperature inside the cylinder. (The final should be atmospheric till the cylinder be at the same location)

4) A Steam Turbine is able to receive saturated vapor at different pressures and velocities which converts it completely to a saturated liquid at the turbine exit. If it is to extract the energy of 2 kg/s vapor during operation. The outlet velocity of the liquid is constant 7 m/s for all operating points that the turbine can cover. Please draw a graph showing work versus:

a) Different velocities starting from 10 m/s to 30 m/s with step size 5 m/s for inlet pressure 10 MPa.

b) Different pressure inlets of stream started from 10 to 20 MPa with step size 2 MPa for fluid velocity 15 m/s.

A heat-powered portable air compressor consists of three components:

(a) an adiabatic compressor,

(b) a constant-pressure heater (heat supplied from an outside source), and

(c) an adiabatic turbine.

Ambient air enters the compressor at ranges 100-200 kPa, 300 K and is compressed to 600 kPa. All the power from the turbine goes into the compressor and If turbine outlet pressure is required to be 300 kPa, what must the temperature be at the exit of the heater? Draw a graph and provide discussion for temperature against inlet pressure of the compressor?

To find our objective which is to show the trend of room temperature against the mass of water in the fridge, first you need assume specific mass for bottle of water in the fridge (let say; 5 10 15 20 kg) (Cp 4186 J/kg). Then, you may need to follow the below procedure

1) Find the conditions of points 1, 2 ,3 and 4 using steam tables for ammonia. (5 Marks)

2) Draw a graph representing the trend of room temperature against the mass of water in the fridge. (5 Marks)

3) Calculate the entropy generation in the ammonia cycle as a system and room as an environment. For this part, do the calculations for every mass of water in the fridge and assume the room temperature is constant at whatever it should be. (5 Marks)

4) Draw P-V, V-T and S-T diagram for ammonia using steam tables. Afterwards, show the position of point 1-4 in the diagram and discuss how the mass of water in the fridge could influence the condition of ammonia in the engine of fridge.

5) From the trend you have obtained, discuss how the performance of fridge in under the influence of water. For how much water in the fridge, you expect that fridge stops working. For this part, you should consider the temperature of condenser and evaporator constant at 40 and -20 oC and use the fact the compressor is not able to compress any liquid meaning that the output of the condenser could be exceptionally saturated liquid at 40 oC. MECH41000 Fundamental Of Mechanics And Thermofluid

## ENGT5152 Composite Materials

To develop the skills in continuous fibre reinforced laminates design for structural applications. ENGT5152 Composite Materials

Objectives:

(1)Learn how to deal with angle lamina in structural analysis

(2)Familiarise with the steps and procedures in macromechanical analysis of laminates.

(4)Awareness of the social, ethical and environmental impacts of using composite materials.

### The Design Problem

A 2 m long cylindrical pressure vessel (Figure 1) with an inner diameter of 0.8 m is subjected to an internal gauge pressure of 2.0 MPa. The vessel operates at room temperature. High strength steel with a yield strength of 800 MPa was initially used in the design to make the vessel. The required safety factor is 2.0. It is

### Your TASKS

(1)Conduct stress analysis of the pressure vessel to determine the relationship between stress, pressure, vessel dimension and vessel wall thickness.

(2)Find applied loads in x and y directions, Nx and Ny, in N/m.

(3)Design the stacking of the lamina layers, considering orientation and number of layers.

(4)Using the Programme “Laminate” to find out global and local stresses and the safety factor (SF) for each layer.

(5)If SF is smaller than 2 in one or more layers, then increase the number of layers or change orientations (must be symmetric), and conduct the analysis again. You may need several attempts before achieving a SF larger and close to 2 in every layer.

(6)If SF is much larger than 2 in all layers, then reduce the number of layers or change orientations (must be symmetric), and conduct the analysis again. You may need several attempts before achieving a SF larger and close to 2 in every layer.

(7)If SF is larger but close to 2 in every layer, then the design is valid.

(8)Try other stacking/orientation combinations, repeat steps (3) to (6).

(9)Determine the design which requires the minimum number of layers.

(10)Use the optimum design, calculate the volume, weight and relative cost of the composite to be used.

(11)Compare the values in (10) for the composite to those for steel, and comment on weight saving, cost, health and safety issues, and recycling and environmental impact of using composites in this application.

(12)Write your report in a standard format and submit by the deadline specified on the Blackboard.

### Report

Your report should contain (but not limit to) the following:

1.Introduction ….. Introducing background of pressure vessels, their traditional design, material and manufacturing, and aim and objectives of this assignment.

2.Force and stress analysis to determine acting forces in N/m.

3.Procedures in macro-mechanical analysis of laminates.

4.Laminate design

(a)Your strategy in design of the laminate for the pressure vessel.

(b)Your stacking combinations, results from “Laminate” and iterations involved for each stacking.

(c)Your optimal design with explanation.

(d)Calculation of volume, weight, cost ……

(e)Design with steel as the material, calculation of volume, weight, cost ….

### 5.Discussion

(a)Weight saving

(b)Cost comparison

(c)Thickness and volume comparison

(d)Manufacturing route

(e)Potential health and safety issues using composite materials

(f)Recycling and environmental impact

6.Conclusions and recommendations

(a)Draw conclusions from the assignment

(b)Make some recommendations as to how to improve your design in the future, etc. ENGT5152 Composite Materials

## MIET1077: Mechanics Of Machine

Task in MIET1077: Mechanics Of Machine

How to use this template:

Read and follow all the instructions highlighted in yellow colour and delete all highlighted instructions from your final report. MIET1077: Mechanics Of Machine

You must fill out all the tables in the report and replace the figures that are given as examples with your own figures/diagrams.

You can draw diagrams on A3 or A4 size paper by hand. However, you need to scan them with proper resolution to use them in your report. Save your final report in PDF file format to submit on the Canvas LMS.

Please see the ‘Assignment Handout’ (available on Canvas) for additional information and suggestions.

 Question Description Marks (%) Items Introduction 2 Cal, Fig, Tab 2, 3 1 Graphical position analysis 2 Figs 2 Graphical velocity analysis 2 Cal, Fig, Tab 4 3 Graphical acceleration analysis 2 Cal, Fig, Tab 5 4 Instantaneous Centre (IC) method 2 Cal, Figs, Tab 6 5 Analytical position analysis 2 Cal, Fig, Tab 7 Analytical velocity analysis 3 Cal, Fig, Tab 8 Analytical acceleration analysis 4 Cal, Fig, Tab 9 6 Dynamic force and torque analysis 7 Cal, Fig, Matrix, Tab 10 7 Shaking force, torque and moments 3 Cal, Fig, Tab 11 8 Working Model Simulation: Position, Velocity and Acceleration 4 wm2d file, Fig, Tab 12 Position diagram 1 Tab 13, Fig Velocity diagram 1 Tab 14, Fig Acceleration diagram 1 Tab 15, Fig Working Model Simulation: Dynamic Force and Torque 2 wm2d file, Fig, Tab 17 Results comparison for kinematic analysis 1 Tab 18 Results comparison for dynamic force and torque analysis 1 Tab 19 Total Marks = 40%

MIET1077: Mechanics Of Machine

## FSHN5002 Research And Design

1.Written project proposal submitted via Turnitin

FSHN5002 Research And Design

2. PowerPoint of project proposal demonstrating strong opening /closing of presentation. Weighting of images / text. Overall flow of presentation, Confidence. Reflection of journey and strengths captured. Timing submitted via Turnitin

Moving image that explore the experimentation, conceptual thinking and or final presentation of project. This must be visually exciting showing 2D / 3D form, showing styling consideration, editing and clear final presentation of specialism

DIGITAL SUBMISSION: SUBMIT VIA TURNITIN

Resolved 3D Prototype / testers of final, selected designs (one outfit/equivalent collection of production samplers) this must be in collaboration with a manufacturer

Anything else equivalent to the above i.e. this can be another – collection diffusion range of part 2? A proposal and visualisation for an online presentation or performance?

OPTION 1

• Documentation of collaboration

• Video experiments (screen shots?)

• Editing

• Costings

DIGITAL SUBMISSION: VIDEO ALL PAGES OPTION 2

1. Technical file for Fashion / Contour / Footwear / Accessory include:

• Costings

• Spec sheets

• Documentation of toiling process and construction from manufacture

LO1: Be able to anticipate market trends within the visual, practical and cultural demands of the changing society by your increasing awareness of your pathway. (RESEARCH, EVALUATION, PRESENTATION)

LO2: Show clear, independent, intellectual and imaginative development and realisation of your work. (RESEARCH, COMMUNICATION, EXPERIMENTATION, DESIGN)

LO3 LO3: Develop knowledge of new technology and techniques to realise design ideas. (TECHNICAL, EXPERIMENTATION, EVALUATION, DESIGN)

LO4: Use your strengths in design to explore and innovate in both 2D and 3D. (DESIGN, TECHNICAL, EXPERIMENTATION, EVALUATION, COMMUNICATION)

LO5: Plan, manage and progress personal design projects. (WRITING, PRESENTATION,

EVALUATION

It is imperative that you adhere to the given deadlines. The following penalties will be applied to late work. Work submitted unauthorised up to 14 calendar days after the original submission date will be subject to a cap of 40%. Work submitted unauthorised more than 14 calendar days after the original submission date will score 0%. If you are unable to meet the deadline due to e.g. illness or unforeseen circumstances, you may apply for an extension  to the hand in date from the rotation tutor, however this must be done prior to the deadline and not on the day of the deadline itself. Further information can be found in the module handbook. Summative Feedback

You will receive written feedback within 4 academic weeks from the date of submission. This is in accordance with University regulations. Please note that unforeseen circumstances such as staff illness may mean that this date has to change. Formative feedback will be given verbally throughout the module. Further information can be found in the module handbook.

1. Written, relevant and referenced Major Project proposal (1,000 words) Part 2

2. PowerPoint of project proposal demonstrating strong opening /closing of presentation. Weighting of images / text. Overall flow of presentation, Confidence. Reflection of journey and strengths captured. Timing. Part 2

3. Reflective diary: (can include critical analysis of feedback, own time-plan, images etc).

## TEH245B Course Information

Task in TEH245B Course Information

1  To access the high level storage a fixed position crane is required 3 metres from one wall. The maximum load will be 2 tonnes

TEH245B Course Information

Two possible options are a 3m cantilever support or a 6m encastré beam.

For both options calculate the magnitude of shear force and bending moments.

2  A 3m column with fixed ends will support part of the storage. A worst case compressive load of 600kN has been estimated by the manager.

i.Select a suitable I section from the BS4 to ensure the slenderness ratio is below 100.

ii.Check that the beam you selected can cope with the direct compressive load. You may assume concentric loading conditions and compressive yield strength is 250MPa.

Note: A safety factor has already been included in the value of the load.

3 a)A 2m long solid shaft has a diameter of 30 mm and is used to transmit a power of 25kW at 1000 rpm.

Determine:

i.  the maximum shear stress in the shaft
ii.the angle of twist over a length of 2 m.

b)An alternate shaft design has been proposed using a hollow shaft with the same external diameter and an internal diameter of 10mm.

Recalculate the shear stress and angle of twist and comment on the suitability of the new design.

1  To access the high level storage a fixed position crane is required 3 metres from one wall. The maximum load will be 2 tonnes

Two possible options are a 3m cantilever support or a 6m encastré beam.

For both options calculate the magnitude of shear force and bending moments.

2  A 3m column with fixed ends will support part of the storage. A worst case compressive load of 600kN has been estimated by the manager.

i.Select a suitable I section from the BS4 to ensure the slenderness ratio is below 100.

ii.Check that the beam you selected can cope with the direct compressive load. You may assume concentric loading conditions and compressive yield strength is 250MPa.

Note: A safety factor has already been included in the value of the load.

3 a)A 2m long solid shaft has a diameter of 30 mm and is used to transmit a power of 25kW at 1000 rpm.

Determine:

i.  the maximum shear stress in the shaft
ii.the angle of twist over a length of 2 m.

b)An alternate shaft design has been proposed using a hollow shaft with the same external diameter and an internal diameter of 10mm
.

Recalculate the shear stress and angle of twist and comment on the suitability of the new design.

TEH245B Course Information

## ENGT5220 Low Impact Manufacturing

The learning outcomes that are assessed by this coursework demonstrate in ENGT5220 Low Impact Manufacturing

1. A systematic understanding of the activities of industrial organisations at all points of the product life-cycle from raw material extraction to disposal and a critical awareness of current approaches to mitigating associated environmental impacts.

2. A comprehensive understanding of assessment and analysis techniques that can be applied to the student’s own research into ways to reduce the environmental impact and energy consumption of industrial organisations.

3. A conceptual understanding of the energy requirements of the components of common industrial processes such as motors, pumps, heaters and compressors that will allow students to critically evaluate research methodologies and outputs from a range of related academic disciplines.

4. Originality in tackling the problems of meeting consumer demand for products and associated services in a competitive globalised industrial context while minimising the associated life-cycle energy consumption

5. The qualities and transferable skills necessary for employment in tomorrow’s lowcarbon industries, specifically the skills of decision making in unpredictable situations and the ability to research and learn independently, required for CPD.

Tasks to be undertaken:

You are the sustainability manager for a manufacturer of electric golf buggies. At present, all material and energy flows are linear (no reuse or recycling). You have been asked to investigate the application of the ‘Circular Economy’ concept to the company and its products. Your role also involves you in the planning of future products and the strategic direction of the business.

for the circular economy:

• Structural parts (chassis, wheels, suspension, seat assembly, etc.)

• Electrical parts (motors, lights, switches, wires, circuit boards, batteries) and

• Miscellaneous parts (tyres, transmission, bodywork, upholstery, etc.)

2. Describe a future sustainable industrial system in terms of the stages in the product lifecycle from raw material extraction through manufacturing and use to disposal, after the company has made the material flows as ‘circular’ as possible.

3. For each of the components described in part 1, describe the strategy that the company should adopt over the next 10 years to build the sustainable system you described in part 2. Where possible, illustrate your points from relevant literature.

Deliverables to be submitted for assessment:

Your report should be no more than 2500 words. Use appendices to include additional charts, illustrations and data as necessary. You may find it useful to structure your report according to the list of tasks to be undertaken. Appendices should be no longer than 5 pages in total. The document should be produced in the style of a technical report (formal, factual and to the point). You should use a font of size no less than 10 points. How the work will be marked:

Assessment will be based on the extent to which the learning outcomes listed above have been met, and the extent to which the above instructions, notes and guidance are complied with (for example regarding word limit, style, structure, referencing and citation, etc.). The criteria below relate to the current pass mark of 50%.

• Introduction to the report – 10 marks

• Description of materials and suitability for the circular economy – 30 marks

• Description of future industrial system and life cycle stages – 30 marks

• Descriptions of 10 year strategy – 20 marks

• Clarity of writing style, referencing and structure of report – 10 marks

Work that is deficient in most of the respects outlined above, showing no evidence of critical analysis will be awarded an outright fail of 44% or less. A marginal fail of 45% to 49% may be awarded to work that demonstrates some understanding of the problem but where the understanding, accuracy, organisation and critical analysis fail to justify a marginal pass.
ENGT5220 Low Impact Manufacturing