Real-time diagnosis of gas-assisted hot embossing process by ultrasound

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DOIResolve DOI: http://doi.org/10.1002/pen.23465
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TypeArticle
Journal titlePolymer Engineering and Science
ISSN0032-3888
Volume53
Issue10
Pages21752182; # of pages: 8
SubjectGas pressures; Gas-assisted hot embossing; High temperature ultrasonic transducers; Plastic plates; Real-time diagnosis; V-cut pattern; Sheet molding compounds; Ultrasonic transducers; Ultrasonics; Gases
AbstractAn integrated high temperature ultrasonic transducer (HTUT) sensor has been utilized for diagnosis of gas-assisted hot embossing process to fabricate V-cut patterns real-time, nonintrusively and nondestructively. The progression of the process, including plastic plate soften, gas introducing, cooling, and plate detachment inside the chamber, was clearly observed using ultrasound. Ultrasonic velocity could not only indicate the four steps of process, but also evaluate the replicating degree of the V-cut patterns on surface of plastic plate under various temperature and gas pressure settings. The experimental results indicate that the heights of V-cut patterns increase with temperature and gas pressure. © 2013 Society of Plastics Engineers.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute (IMI-IMI)
Peer reviewedYes
NPARC number21269705
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Record identifierb291a016-e504-462c-a263-a39502231c42
Record created2013-12-13
Record modified2016-05-09
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