Quality control (dynamic) testing installation for evaluating the long (50 years) service life of plastic components
by C.C . Lawrence
International Journal of Materials and Product Technology (IJMPT), Vol. 3, No. 3/4, 1988

Abstract: This paper describes an apparatus that has been developed to translate fundamental test data into a quality control (Q.C.) procedure for the acceptance and overall assessment of commercial grades of plastic pipe. The basic test consists of applying a fatigue load by internal pressurisation to a notched sample immersed in water at an elevated temperature in a factory environment. The importance of the test is the early (24 hours typically) release of a production batch, but with an assurance of its long (50 years) life performance. The system was designed so that the preparation of test samples was quite elementary and setting of the test was confined to direct conversation with a computer terminal. The control and monitoring was integral with the microprocessor, but a manual alternative was also available.

Online publication date: Sat, 06-Nov-2010

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