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Elements and Performance Criteria

  1. Determine mechanical/structural design requirements
  2. Select materials and additives, including reinforcing, appropriate for the design brief
  3. Undertake mechanical design of component
  4. Design jointing/joining/ other product interfaces
  5. Finalise design

Required Skills

Required skills

Required skills include

designing a component which is mechanicallystructurally fit for its end purpose and which can be efficiently manufactured

implementing enterprise policies and procedures and relevant regulatory requirements including the OHS legislative obligations of designers within appropriate time constraints and in a manner relevant to the job

high levels of numeracy and literacy to write and interpret technical specifications and reports

advanced numeracy allowing the calculation and interpretation of statistics design formulae and process conditions

Required knowledge

Required knowledge includes

stressstrain data of materials to the design situation

material flow properties

impact and notch strength

tensile compressive shear and torsional strength

adequate safety factors

overall design features which take advantage of the materials being used

make compounding recommendations to modify properties such as

stressstrain data of materials

flow rheometric properties

material strength

environmental resistance eg temperature chemicals ultraviolet UV and other radiation

make changes to physical size and shape to change

stiffnessrigidity and deflection

strength

Evidence Required

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

The unit will be assessed in as holistic a manner as is practical and may be integrated with the assessment of other relevant units of competency

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

Consistent performance should be demonstrated In particular look to see that

a thorough understanding of materials their additives and the rheological heat and other effects of processing to the design of a new mechanical or structural component are applied

both compound design and mechanical design are able to be modified to optimise the results

the designed product is fit for its purpose and also capable of safe and efficient manufacture for an appropriate pricecost

Context of and specific resources for assessment

This unit of competency requires a detailed understanding of mechanics such as might be gained from some engineering studies Where this knowledge is to be gained as part of this unit of competency it will require a significantly greater effort and time than would otherwise be required

Assessment will require access to an operating plant over an extended period of time or a suitable method of gathering evidence of operating ability over a range of situations

Assessment will occur over a range of situations which will include disruptions to normal smooth operation

Simulation or case studiesscenarios may be required to allow for timely assessment of parts of this unit of competency Simulation should be based on the actual plant and will include walkthroughs of the relevant competency components A bank of scenarioscase studieswhat ifs and questions will be required to probe the reasoning behind observable actions

Method of assessment

This unit of competency assumes the knowledge component included in the following unit of competency

PMCB Choose materials for an application

PMC555031B Choose materials for an application

Competence in this unit may be assessed

by observation of an actual design project where the assessee takes a lead technical role

by use of a suitable design project where arrangements are made to also assess the implementation aspects

Evidence must be available that the specified knowledge has been acquired and is able to be applied or the units may be coassessed

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


Range Statement

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.

Procedures

All operations are performed in accordance with standard procedures and work instructions

Standard procedures

Standard procedures refer to:

all relevant workplace procedures, work instructions, temporary instructions and relevant industry and government codes and standards

Situations

The situations covered by this unit include, but are not limited to:

critical load bearing structural components requiring significant design such as columns and beams

critical mechanical components transmitting power/forces such as shafts, gears and bearings

component joints/joins

components with a critical rigidity/flexural specification

individual components

integrated structural components

large and small components