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Evidence Guide: MARL016 - Apply intermediate principles of marine mechanics

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MARL016 - Apply intermediate principles of marine mechanics

What evidence can you provide to prove your understanding of each of the following citeria?

Apply principle of moments to determine forces in supports, connections, bearings and support systems

  1. Equilibrium of solids is explained
  2. Polygon of forces is applied to determine an unknown force
  3. Principle of moments is applied to solve moments of any quantity
  4. Resultant of a system of co-planer forces is calculated
  5. Twisting moment due to engine crank mechanisms is calculated
  6. Moments of areas and solids are calculated
Equilibrium of solids is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Polygon of forces is applied to determine an unknown force

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Principle of moments is applied to solve moments of any quantity

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Resultant of a system of co-planer forces is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Twisting moment due to engine crank mechanisms is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Moments of areas and solids are calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform friction calculations

  1. Laws of friction are applied to solve problems involving friction in inclined planes
  2. Coefficient of friction is converted to angle of repose
  3. Friction theory is applied to solve problems involving screw threads
  4. Brake torque is analysed and problems are solved relating to work lost on brake shoes and brake discs
Laws of friction are applied to solve problems involving friction in inclined planes

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Coefficient of friction is converted to angle of repose

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Friction theory is applied to solve problems involving screw threads

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Brake torque is analysed and problems are solved relating to work lost on brake shoes and brake discs

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Solve motion problems

  1. Linear velocity/time and acceleration/time graphs are applied to derive standard linear formula
  2. Problems of linear and angular motion involving uniform acceleration and deceleration are solved
  3. Marine engineering problems involving free falling bodies are solved
Linear velocity/time and acceleration/time graphs are applied to derive standard linear formula

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Problems of linear and angular motion involving uniform acceleration and deceleration are solved

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Marine engineering problems involving free falling bodies are solved

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Solve problems using principle of momentum

  1. Relationship between momentum and impulse is explained
  2. Conservation of energy theory is applied to problems involving collision of perfectly elastic bodies
Relationship between momentum and impulse is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Conservation of energy theory is applied to problems involving collision of perfectly elastic bodies

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Solve problems using principles of dynamics

  1. Centripetal force is distinguished from centrifugal force
  2. Relationship between centripetal and centrifugal force and mass, angular velocity and radius is clarified
  3. Problems are solved involving centripetal and centrifugal forces
  4. Centripetal acceleration is distinguished from centrifugal force
  5. Out-of-balance forces on co-planer systems are calculated
  6. Bearing reactions in rotating shafts are determined
  7. Radius of gyration and moment of inertion when applied to rotating bodies is explained
  8. Centrifugal forces in governors are calculated
  9. Principles of dynamics are applied to solve problems involving rotating bodies, accelerating shafts, motors and flywheels
Centripetal force is distinguished from centrifugal force

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Relationship between centripetal and centrifugal force and mass, angular velocity and radius is clarified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Problems are solved involving centripetal and centrifugal forces

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Centripetal acceleration is distinguished from centrifugal force

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Out-of-balance forces on co-planer systems are calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Bearing reactions in rotating shafts are determined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Radius of gyration and moment of inertion when applied to rotating bodies is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Centrifugal forces in governors are calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Principles of dynamics are applied to solve problems involving rotating bodies, accelerating shafts, motors and flywheels

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate stresses and strains on components due to axial loading and restricted thermal expansion

  1. Reduction in area and percentage elongation of tensile test specimens is calculated
  2. Stresses in composite bodies of dissimilar dimensions and dissimilar materials are calculated
  3. Problems involving thermal stress on components due to temperature change with free and restricted expansion are solved
Reduction in area and percentage elongation of tensile test specimens is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Stresses in composite bodies of dissimilar dimensions and dissimilar materials are calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Problems involving thermal stress on components due to temperature change with free and restricted expansion are solved

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Apply thin cylinder theory to determine stresses in pressure vessels

  1. Stress on thin-shelled pressure vessels due to internal pressure is calculated
  2. Formula for calculating stress on thin-shelled pressure vessels to incorporate special conditions is modified
Stress on thin-shelled pressure vessels due to internal pressure is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Formula for calculating stress on thin-shelled pressure vessels to incorporate special conditions is modified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Apply torsion theory to calculate shear stress

  1. Torsion equation is applied to solve problems involving solid and hollow shafts
  2. Power transmitted in shafts and coupling bolts is calculated
  3. Torsion equation is applied to calculate stress and deflection in a close-coiled helical spring
  4. Power transmitted by shafts and couplings is calculated
Torsion equation is applied to solve problems involving solid and hollow shafts

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Power transmitted in shafts and coupling bolts is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Torsion equation is applied to calculate stress and deflection in a close-coiled helical spring

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Power transmitted by shafts and couplings is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Solve problems involving fluids

  1. Variation of fluid pressure with depth is calculated
  2. Bernoulli’s Theorem is used to solve problems of velocity, pressure and head in pipes and ducted systems
  3. Archimedes’ Principle is used to solve problems related to floating vessels using real and apparent weight
Variation of fluid pressure with depth is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Bernoulli’s Theorem is used to solve problems of velocity, pressure and head in pipes and ducted systems

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Archimedes’ Principle is used to solve problems related to floating vessels using real and apparent weight

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Apply beam theory to solve problems

  1. Reactions of a loaded beam are calculated
  2. Shear force and bending moment diagrams are constructed for simply supported and cantilever beams
  3. Shear force and bending moment diagrams for beams with concentrated and uniformly distributed loads are calculated
  4. Beam equation is applied to derive stresses in beams loaded with concentrated and uniformly distributed loads
  5. Beam equation is applied to calculate bending stresses
Reactions of a loaded beam are calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Shear force and bending moment diagrams are constructed for simply supported and cantilever beams

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Shear force and bending moment diagrams for beams with concentrated and uniformly distributed loads are calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Beam equation is applied to derive stresses in beams loaded with concentrated and uniformly distributed loads

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Beam equation is applied to calculate bending stresses

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Apply principle of moments to determine forces in supports, connections, bearings and support systems

1.1

Equilibrium of solids is explained

1.2

Polygon of forces is applied to determine an unknown force

1.3

Principle of moments is applied to solve moments of any quantity

1.4

Resultant of a system of co-planer forces is calculated

1.5

Twisting moment due to engine crank mechanisms is calculated

1.6

Moments of areas and solids are calculated

2

Perform friction calculations

2.1

Laws of friction are applied to solve problems involving friction in inclined planes

2.2

Coefficient of friction is converted to angle of repose

2.3

Friction theory is applied to solve problems involving screw threads

2.4

Brake torque is analysed and problems are solved relating to work lost on brake shoes and brake discs

3

Solve motion problems

3.1

Linear velocity/time and acceleration/time graphs are applied to derive standard linear formula

3.2

Problems of linear and angular motion involving uniform acceleration and deceleration are solved

3.3

Marine engineering problems involving free falling bodies are solved

4

Solve problems using principle of momentum

4.1

Relationship between momentum and impulse is explained

4.2

Conservation of energy theory is applied to problems involving collision of perfectly elastic bodies

5

Solve problems using principles of dynamics

5.1

Centripetal force is distinguished from centrifugal force

5.2

Relationship between centripetal and centrifugal force and mass, angular velocity and radius is clarified

5.3

Problems are solved involving centripetal and centrifugal forces

5.4

Centripetal acceleration is distinguished from centrifugal force

5.5

Out-of-balance forces on co-planer systems are calculated

5.6

Bearing reactions in rotating shafts are determined

5.7

Radius of gyration and moment of inertion when applied to rotating bodies is explained

5.8

Centrifugal forces in governors are calculated

5.9

Principles of dynamics are applied to solve problems involving rotating bodies, accelerating shafts, motors and flywheels

6

Calculate stresses and strains on components due to axial loading and restricted thermal expansion

6.1

Reduction in area and percentage elongation of tensile test specimens is calculated

6.2

Stresses in composite bodies of dissimilar dimensions and dissimilar materials are calculated

6.3

Problems involving thermal stress on components due to temperature change with free and restricted expansion are solved

7

Apply thin cylinder theory to determine stresses in pressure vessels

7.1

Stress on thin-shelled pressure vessels due to internal pressure is calculated

7.2

Formula for calculating stress on thin-shelled pressure vessels to incorporate special conditions is modified

8

Apply torsion theory to calculate shear stress

8.1

Torsion equation is applied to solve problems involving solid and hollow shafts

8.2

Power transmitted in shafts and coupling bolts is calculated

8.3

Torsion equation is applied to calculate stress and deflection in a close-coiled helical spring

8.4

Power transmitted by shafts and couplings is calculated

9

Solve problems involving fluids

9.1

Variation of fluid pressure with depth is calculated

9.2

Bernoulli’s Theorem is used to solve problems of velocity, pressure and head in pipes and ducted systems

9.3

Archimedes’ Principle is used to solve problems related to floating vessels using real and apparent weight

10

Apply beam theory to solve problems

10.1

Reactions of a loaded beam are calculated

10.2

Shear force and bending moment diagrams are constructed for simply supported and cantilever beams

10.3

Shear force and bending moment diagrams for beams with concentrated and uniformly distributed loads are calculated

10.4

Beam equation is applied to derive stresses in beams loaded with concentrated and uniformly distributed loads

10.5

Beam equation is applied to calculate bending stresses

Required Skills and Knowledge

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Apply principle of moments to determine forces in supports, connections, bearings and support systems

1.1

Equilibrium of solids is explained

1.2

Polygon of forces is applied to determine an unknown force

1.3

Principle of moments is applied to solve moments of any quantity

1.4

Resultant of a system of co-planer forces is calculated

1.5

Twisting moment due to engine crank mechanisms is calculated

1.6

Moments of areas and solids are calculated

2

Perform friction calculations

2.1

Laws of friction are applied to solve problems involving friction in inclined planes

2.2

Coefficient of friction is converted to angle of repose

2.3

Friction theory is applied to solve problems involving screw threads

2.4

Brake torque is analysed and problems are solved relating to work lost on brake shoes and brake discs

3

Solve motion problems

3.1

Linear velocity/time and acceleration/time graphs are applied to derive standard linear formula

3.2

Problems of linear and angular motion involving uniform acceleration and deceleration are solved

3.3

Marine engineering problems involving free falling bodies are solved

4

Solve problems using principle of momentum

4.1

Relationship between momentum and impulse is explained

4.2

Conservation of energy theory is applied to problems involving collision of perfectly elastic bodies

5

Solve problems using principles of dynamics

5.1

Centripetal force is distinguished from centrifugal force

5.2

Relationship between centripetal and centrifugal force and mass, angular velocity and radius is clarified

5.3

Problems are solved involving centripetal and centrifugal forces

5.4

Centripetal acceleration is distinguished from centrifugal force

5.5

Out-of-balance forces on co-planer systems are calculated

5.6

Bearing reactions in rotating shafts are determined

5.7

Radius of gyration and moment of inertion when applied to rotating bodies is explained

5.8

Centrifugal forces in governors are calculated

5.9

Principles of dynamics are applied to solve problems involving rotating bodies, accelerating shafts, motors and flywheels

6

Calculate stresses and strains on components due to axial loading and restricted thermal expansion

6.1

Reduction in area and percentage elongation of tensile test specimens is calculated

6.2

Stresses in composite bodies of dissimilar dimensions and dissimilar materials are calculated

6.3

Problems involving thermal stress on components due to temperature change with free and restricted expansion are solved

7

Apply thin cylinder theory to determine stresses in pressure vessels

7.1

Stress on thin-shelled pressure vessels due to internal pressure is calculated

7.2

Formula for calculating stress on thin-shelled pressure vessels to incorporate special conditions is modified

8

Apply torsion theory to calculate shear stress

8.1

Torsion equation is applied to solve problems involving solid and hollow shafts

8.2

Power transmitted in shafts and coupling bolts is calculated

8.3

Torsion equation is applied to calculate stress and deflection in a close-coiled helical spring

8.4

Power transmitted by shafts and couplings is calculated

9

Solve problems involving fluids

9.1

Variation of fluid pressure with depth is calculated

9.2

Bernoulli’s Theorem is used to solve problems of velocity, pressure and head in pipes and ducted systems

9.3

Archimedes’ Principle is used to solve problems related to floating vessels using real and apparent weight

10

Apply beam theory to solve problems

10.1

Reactions of a loaded beam are calculated

10.2

Shear force and bending moment diagrams are constructed for simply supported and cantilever beams

10.3

Shear force and bending moment diagrams for beams with concentrated and uniformly distributed loads are calculated

10.4

Beam equation is applied to derive stresses in beams loaded with concentrated and uniformly distributed loads

10.5

Beam equation is applied to calculate bending stresses

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include:

applying relevant work health and safety/occupational health and safety (WHS/OHS) requirements and work practices

assessing own work outcomes and maintaining knowledge of current codes, standards, regulations and industry practices

identifying and applying relevant mathematical formulas and techniques to solve basic problems related to marine mechanics

identifying and interpreting numerical and graphical information, and performing mathematical calculations to solve problems related to fluids and stresses

identifying, collating and processing information required to perform basic calculations related to marine mechanics

imparting knowledge and ideas through verbal, written and visual means

reading and interpreting written information needed to perform basic calculations in marine mechanics

solving problems using appropriate laws and principles

using calculators to perform mathematical calculations.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

basic principles of marine mechanics

beam theory

conservation of energy theorem

factor of safety

fluids

forces:

balanced and unbalanced forces

centre of gravity

conditions for equilibrium

coplanar

definitions of matter, mass, weight, force, density and relative density

forces

moments of couples

parallelogram and triangle of forces

pressure

scalar and vector quantities

vector representation of forces

joint efficiency factor

laws of:

friction

motion

momentum

motion:

action and reaction

force, velocity and acceleration

linear and angular motion

momentum

Newton’s laws of motion

pressure vessels

principle of moments

principles of dynamics

relationship between torque and power

stress and strain:

direct stress and strain

Hooke's law

load extension graphs

modulus of elasticity

shear stress and strain

thin cylinder theory

WHS/OHS requirements and work practices.

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Governors must include:

porter

watt

Special conditions must include:

joint efficiencies

safety factors