Transcription of Plastic Failure through Environmental Stress Cracking
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CONSULTANT S CORNERP lastic Failure through EnvironmentalStress CrackingESC, the Plastic killer, is a frequent cause of field failuresBy Jeffrey JansenThe Madison Group, Madison, Wisconsin, USA Environmental Stress Cracking (ESC) is considered a lead-ing cause of Plastic part Failure . It is the prematureembrittlement and subsequent Cracking of a plasticdue to the simultaneous and synergistic action of Stress andcontact with a chemical agent. Because of the frequencyand severity of ESC Failure , it has been nicknamed the plastickiller (see, for example, Figure 1).
circumstances, environmental stress cracking can occur simply under the molded-in residual stress associated with injection molding and other forming processes.
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