Forty-five percent of serious plastics product failures result from inappropriate materials selection, said Melissa Kurtz, senior materials scientist at Stork Technimet Inc. in a lively discussion on failure analysis at the annual technical conference of the Society of Plastics Engineers in Milwaukee, WI. “This is especially true in applications involving chemical attack and environmental stress cracking,” she said. In one example she cited a phthalic-based plasticizer used in a rubber seal caused environmental stress cracking of polyetherimide in a medical device. In a panel discussion, a General Motors engineer asked for tips on how to determine if excessive use of captive regrind could be causing a part failure. Experts suggested testing melt index of material before molding to determine if the molecular weight was out of range.
Two new technologies from Stratasys, created in partnership with Boeing, Ford, and Siemens, will bring accurate, repeatable manufacturing of very large thermoplastic end products, and much bigger composite parts, onto the factory floor for industries including automotive and aerospace.
These new 3D-printing technologies and printers include some that are truly boundary-breaking: a sophisticated new sub-$10,000, 10-plus materials bioprinter, the first industrial-strength silicone 3D-printing service, and a clever twist on 3D printing and thermoforming for making high-quality realistic models.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies.
You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived.
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