Introduction to Plastics Technology

Engineers will be happy to note that the course does not dwell on the chemical structure or synthesis of plastics.

As an additional feature delegates will be invited to bring in examples of problem mouldings or product failures for general discussion or private consultation.

This activity is approved for Professional Development by the Institute of Materials, Minerals and Mining.

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 barriers to structured selection include many plastics types and thousands of grades to choose from.  Numerous options and variations will be presented to facilitate 'decoding the data sheet'.  Equally important there will be advice on drawing up the specification; the hidden requirements, often overlooked, which can result in failure.  Finally there is a participative case study using computer software.

Design for Performance

The structural performance of plastics (creep, stress relaxation, fatigue, effect of temperature, ageing, chemical attack), allowable design stresses and strains.

The differences betwen short and long term mechanical properties and their impact on application.  Introduction of methodologies to use long term materials data to improve the confidence in the performance of a design and minimise the risk of product failure in the long term.

Failure Diagnosis

Common causes of failure, brittle fracture (stress cracking, embrittlement, effect of notches, uv degradation, hydrolysis), impact, fatigue

Injection Moulding

Many common faults including short shots, flashing, weld lines, sinking and voiding, thermal and hydrolytic degradation, etc. are discussed.  Causes and remedies are suggested.  How the part design contributes to the problems will be explained such that design can be optimised for manufacture as well as function.

Use of software simulation tools to optimise the moulded part in terms of processing quality, final part dimensions and residual stress.

Testing

Tensile stress-strain and creep tests, impact tests and stress relaxation

Date:

7 Mar 2018 - 8 Mar 2018

Location:

Shropshire, United Kingdom

Organiser Type

Other

Location

Smithers Rapra
Shawbury
Shrewsbury
Shropshire
SY4 4NR
United Kingdom

Organised by

Smithers Rapra

+44 1939 252312


Approved for Professional Development by IOM3

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