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Plastics Materials and Products

iSmithers

Other Qualifications , Uncategorised

Course Description

Course Overview This course concentrates on material weaknesses and processing problems and therefore avoidance of common causes of product failure. As an additional feature delegates will be invited to bring in examples of problem mouldings or product failures for general discussion or private consultation. Engineers will be happy to note that the course does not dwell on the chemical structure or synthesis of plastics. Course Content Plastics Materials History, classification (thermosets, thermoplastics, semi-crystalline, amorphous), major modifications (fibre reinforced, impact modified, etc.). Properties, characteristics advantages and disadvantages of common plastics. Materials Selection The importance and difficulty of optimum selection, methodology, computer aided selection. Design for Performance The structural performance of plastics (creep, stress relaxation, fatigue, effect of temperature, ageing, chemical attack), allowable design stresses and strains. Failure Diagnosis Common causes of failure, brittle fracture (stress cracking, embrittlement, effect of notches, uv degradation, hydrolysis), impact, fatigue Design for Injection Moulding Shrinkage, warpage, frozen in stress, common moulding faults (underpacking, overpacking, sinking, voiding, splay marks, jetting, weld lines etc.) and how to minimise them.

Course Overview This course concentrates on material weaknesses and processing problems and therefore avoidance of common causes of product failure. As an additional feature delegates will be invited to bring in examples of problem mouldings or product failures for general discussion or private consultation. Engineers will be happy to note that the course does not dwell on the chemical structure...

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