The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to analyse loads on a variety of frames and mechanisms to confirm performance and safety compliance.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently:

identify and review features, functions and performance requirement of frames, beams and mechanisms

identify complex calculations requiring professional engineering assistance

establish dynamics, design loads, working stresses, allowable deformations and factor of safety element arrangements for calculations to be done

evaluate assembly and fastening methods, analysis techniques, software and software validation techniques

analyse static and dynamic operating conditions and determine design or selection parameters

optimise frame, beam and mechanism elements for strength, deflection, arrangement and fastening

communicate and negotiate with stakeholders, professionals and technicians and make adjustments accordingly

evaluate frames, beams and mechanisms for WHS and regulatory requirements, and risk management compliance

report and document results.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, then a simulated working environment must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team.

Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate ethnicity, age, gender, demographics and disability.

Access must be provided to appropriate learning and/or assessment support when required. Where applicable, physical resources should include equipment modified for people with disabilities.

Method of assessment

Assessment must satisfy the endorsed Assessment Guidelines of the MEM05 Metal and Engineering Training Package.

Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of underpinning knowledge.

Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure correct interpretation and application.

Assessment may be applied under project-related conditions (real or simulated) and require evidence of process.

Assessment must confirm a reasonable inference that competency is not only able to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.

Assessment may be in conjunction with assessment of other units of competency where required.

Guidance information for assessment

Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed.

Required skills

Required skills include:

applying safe working practices and procedures when working with frames, mechanisms and equipment

evaluating frames, beams and mechanisms for WHS, regulations and risk management requirements

investigating sustainability implications of frames and mechanisms

reviewing design features, functions and performance requirements of frames, beams and mechanisms, including:

dynamics

design loads

working stresses

allowable deformations and factor of safety element arrangements

assembly and fastening methods

selecting appropriate analysis techniques, software and software validation techniques

identifying relevant analysis support, such as graphs, tables, nomograms or computer-aided solutions and validation techniques

analysing static and dynamic operating conditions and determining design or selection parameters

optimising frame, beam and mechanism elements for strength, deflection, arrangement and fastening

communicating with stakeholders

reporting and documenting results of analysis, including calculations, specifications, diagrams and drawings

Required knowledge

Required knowledge includes:

WHS and regulatory requirements, codes of practice, and directives and standards, including those related to risk management

current options and trends in performance analysis software, including underpinning program and software validation techniques

types and functions of frames and mechanisms

mechanisms for converting linear to rotary motion and rotary to linear motion

lifting machines

design loads, working stresses, allowable deflections and factor of safety for machine elements

conditions for equilibrium

non-coplanar and force systems

equilibrium of non-coplanar and non-concurrent force systems

reactions at beam supports (e.g. simply supported, overhung and cantilever beam with vertical and oblique concentrated, uniform and variable distributed loads and couples)

shear force and bending moments

shear force and bending moment diagrams

vertical and oblique concentrated and uniform and variable distributed loads

types and locations of stresses, including:

combined stresses

thermal stress due to restrained expansion

stress concentration and fatigue due to alternating stresses

centre of gravity

centre of percussion

methods of analysis of frames and trusses

deflection of beams

statically indeterminate beams

buckling of compressed members

loads and stresses on bolted and welded connections

static versus dynamic forces, balanced and unbalanced

dynamics and laws of rotational motion

dynamic analysis of mechanisms

linked bodies in motion, including types, impulse, momentum and work energy methods

work, energy and power for balanced and unbalanced force systems

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Structural support and machine elements

Typically these are beam, strut and tie elements of machines and machine supports subject to bending, tension, compression and shear stresses, and may include:

shafts, levers, cams and linkages

frames, staunchions and beams

mechanisms for converting linear to rotary motion and rotary to linear motion

mechanisms with up to five linkages

lifting machines

Machine mechanisms

Machine mechanisms refers to a device to produce a constrained motion while producing a required output. A mechanism is an assembly of elements or links which may be called ‘kinematic pairs’, which remain in contact throughout their motions. One link, typically the base element, is fixed.

Kinematic pairs may be described as turning, sliding, rolling or skidding pairs

WHS, regulatory requirements and enterprise procedures

WHS, regulatory requirements and enterprise procedures may include:

WHS Acts and regulations

relevant standards

codes of practice

risk assessments

registration requirements

safe work practices

state and territory regulatory requirements

Standards and codes

Standards and codes refer to all relevant Australian and International standards and codes applicable to a particular frame and mechanism

Load calculations to be done with, or obtained from, a professional engineer

The unit requires the ability to identify calculations that should be obtained from or calculated with the assistance of a professional engineer. These may include:

regulatory or organisational requirement for professional engineer involvement

static and dynamic complex analysis of loads, including resulting stresses and deformations

choice of graphical and mathematical methods and software options

Appropriate licensed technical and professional assistance

Appropriate licensed technical and professional assistance may include:

technical support and advice relating to elements which have intrinsic dangers, such as:

high pressure

energised fluid vessels

high temperatures and heat energy capacity

wiring with high current control voltages above extra low voltage

professional support for technologies, such as:

specialist electric motor drives and controllers

specialist materials, plastics, metal alloys and nano materials

special processes, foundry, alloy welding, heat treatment, sealing and fastening

Sustainability

Sustainability is used to mean the entire sustainable performance of the organisation/plant including:

meeting all regulatory requirements

conforming to all industry covenants, protocols and best practice guides

minimising ecological and environmental footprint of process, plant and product

maximising economic benefit of process plant and product to the organisation and the community

minimising the negative WHS impact on employees, community and customer

Appropriate computer-aided solutions and validation techniques

Appropriate computer-aided solutions may include:

software employed for performance analysis/modelling. Underpinning program techniques and algorithms should be understood, such as the use of finite element analysis (FEA) and numerical methods within object oriented modelling techniques

Validation techniques include:

comparison of traditional solutions for simple design problems with software solutions to the same design problems

review of previously implemented design challenges which were completed using the software