Transcription of UNIT 21: MATERIALS ENGINEERING - FREE STUDY
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UNIT 21: MATERIALS ENGINEERING - FREE STUDY
1 unit 21: MATERIALS ENGINEERING unit code: F/601/1626 QCF level: 4 Credit value: 15 LEARNING OUTCOME 4 TUTORIAL 1 On successful completion of this unit a learner will: Understand the in-service causes of failure of ENGINEERING MATERIALS Causes of failure: failure of material categories (metals: ceramics, polymers and composites) creep, fatigue, impact, overstressing, corrosion, temperature, thermal cycling, residual stresses, stress relaxation, degradation (composition change), radiation, electrical breakdown, or combinations of these Service life: contributory effects of service conditions to failure inappropriate maintenance, inappropriate use, faults in manufacture, material selection and design faults, changes in service conditions such as environment, loading and temperature.
© www.freestudy.co.uk 3 1. SERVICE LIFE Any component, machine or structure should have a designed life span. Sometimes it requires regular
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