Beams and Cabels Report (B&C)

| January 7, 2016

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SCHOOL OF ENGINEERING

Year 1 Laboratories

 

B&C

Beam and Cable

Technical Note

                          

 

Surname (Family Name): Click here to enter text.

Student ID Number: Click here to enter text.

Programme:

Other Names: Click here to enter text.

 

Tutor: Click here to enter text.

Demonstrator’s Name (select appropriate box):

William Christian

Ksenija Dvurecenska

 

Lab group number: Click here to enter text.

Date of experiment (DD/MM/YYYY):  DD/MM/YYYY

 

 

 

 

 

STUDENT DECLARATION:

I confirm that I have:

  • Read and understood the University’s Academic Integrity Policy. (Students should familiarise themselves with Appendix L of the University’s Code of Practice on Assessment which also provides the definitions of academic malpractice and the policies and procedures that apply to the investigation of alleged incidents.);
  • Acted honestly, ethically and professionally in conduct leading to this assessment;
  • Not copied material from another source, nor committed plagiarism, nor fabricated data when completing this work;
  • Not colluded with any other student in the preparation and production of this work.

 

Students found to have committed academic malpractice are liable to receive a mark of zero for the assessment or the module concerned. Unfair and dishonest academic practice will attract more severe penalties, including possible suspension or termination of studies.

Overview

 

This technical note template is the entire submission for the SM3 lab. Complete it by following the prompts and instructions, then submit it in the Year 1 Labs and Tutorials site in VITAL.

This technical note contains the following sections:

Abstract

Part A

 
Results
Discussion
Part B  
Results
Discussion
   

The layout in this document is not exactly the same as it would be in a formal report but one aim is to prepare you for writing reports later on. You should use the feedback provided to improve your work.

1          Abstract/Summary

 

Writing an abstract is one of the hardest skills to master in formal lab report writing. An abstract is normally placed at the beginning of a formal lab report, so that the reader can quickly see what is in the document (including what, how and why the experiments were undertaken, and what were the key findings and conclusions, all in a very limited number of words). It is normally the last part to be written. For more information refer to the Technical Writing Guidelines document in the Information and Resources section of the Year 1 Labs and Tutorial VITAL site.

Write an abstract for the entire Beam and Cables lab. The proforma box will limit you to 1400 characters (around 280 words) as the purpose of an abstract is to be concise.

Replace this text with abstract

2          Experiment A – Equilibrium of a Beam

 

Figure 1: A Simple Image to Indicate the Basic Form of the Experiment

 

2.1        Results

 

Graphical presentation of results

Double click anywhere inside the blue box on the page below to edit the embedded excel document. This will allow you to complete the tables in the spread sheet. The graphs for this experiment are simple and so they will be automatically produced for you upon completion of the tables.

You are then required to analyse your results, and the experiment itself, in the discussion section after the embedded spread sheet.

 

2.2        Discussion (Beam Equilibrium)

 

Experimental accuracy – which of your results from experiment 1 were more accurate, 500g or 100g? Why?

Click here to enter text.

Based on your knowledge of load affecting accuracy from experiment 1, which of the results gathered from experiment 2 would you expect to be more accurate? Why?

Click here to enter text.

What other factors within the experimental set up could be the cause of the difference between the measured and theoretical results?

Click here to enter text.

Think of three ways the experiment could be improved to try and reduce these factors.

Click here to enter text.

 

3          Experiment B – Suspension Cable

3.1        Results

 

Table 1: Tension in Suspension Cable for Level Span (7 x 40 means 7 hangers each totalling 40g in weight)

Chain

Weight

          N
Chain Length            m
Number of links       Link Length              mm Link weight                N
Ws = Chain

Weight per unit length

           N/m
Span 700mm
Applied Load

(g)

W[1]

(N/m)

Overhang Weight (N) Reading (N) Total Tension[2] Measured (N) Predicted Tension

(N)

Sag

(mm)

Curved Chain Length

(mm)

Angle of the Chain

(0)

Left Right Left Right Left Right     Left Right
0             3 3                  
7 ´ 10  

 

 

7 ´ 40  

 

 

Table 2: Tension in Suspension Cable for Inclined Span (7 x 40 means 7 hangers each totalling 40g in weight)

Chain

Weight

           N
Chain Length            m
Number of links           Link Length                mm Link weight                          N
Ws = Chain

Weight per unit length

             N/m
Span 700mm
Applied Load

(g)

W[3]

(N/m)

Overhang Weight (N) Reading (N) Total Measured Tension[4] (N) Predicted Tension (N) Sag

(mm)

Curved Chain Length (mm) Angle of the Chain

(0)

Left Right Left Right Left Right T1 T2   Left Right
0  

 

 

            1.5 3                        
7 ´ 10  

 

 

7 ´ 40  

 

 

Graph 1: Cable Weight and Tension (Level Span): Average Measured Tension (N) against Theoretical Tension (N)

 

Give your graph an appropriate caption

 

 

 

 

 

Replace this text with graph

 

 

 

 

Figure 2: Type caption here

 Graph 2: Cable Weight and Tension (Inclined Span): Average Measured Tension (N) against Theoretical Tension (N)

 

Give your graph an appropriate caption

 

 

 

 

 

Replace this text with graph

 

 

 

 

Figure 3: Type caption here

3.2        Sample Calculations

Use the boxes provided to state what the equation is used to find and provide an example of your own calculations.  You only need to give an example for one scenario (e.g. calculations for inclined span at the 7x40g applied load).

 

Equation 1: Enter equation name here.

 =   = Answer  (Units) (1)

 

Equation 2: Enter equation name here.

=  = Answer  (Units) (2)

 

Equation 3: Enter equation name here.

=  = Answer  (Units) (3)

 

3.3        Discussion

Error Analysis

Please state three possible sources of error in your results (experimental and theoretical), and where possible quantify them.

 

Type answer here

[1]

[2] Add weight of overhanging chain to spring balance reading

[3] See note for W from Table 1

[4] Add weight of overhanging chain to spring balance reading

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