2020
DOI: 10.1016/j.micron.2020.102925
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Scanning acoustic microscopy investigation of weld lines in injection-molded parts manufactured from industrial thermoplastic polymer

Abstract: Graphical abstract Scanning acoustic microscopy (SAM) and Terahertz imaging analysis of weld lines in thermoplastic polymer (ABS) manufactured by injection-molding.

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Cited by 9 publications
(8 citation statements)
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“…8(a), a weld line with heterogeneity in the microstructure with respect to the mechanical properties and flow patterns is detectable, as was also reported in Ref. [27]. The estimated width of the weld line is ~ 500 𝜇m.…”
Section: Sam Characterizationsupporting
confidence: 81%
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“…8(a), a weld line with heterogeneity in the microstructure with respect to the mechanical properties and flow patterns is detectable, as was also reported in Ref. [27]. The estimated width of the weld line is ~ 500 𝜇m.…”
Section: Sam Characterizationsupporting
confidence: 81%
“…In this study, we apply polarization-resolved THz imaging to characterize the spatially dependent THz birefringence due to the anisotropy near weld lines, and verify the interpretation of the SAM results in Ref. [27]. By these means we locate injection-mold weld lines in an Acrylonitrile Butadiene Styrene (ABS) thermoplastic electrical receptacle plate in a nondestructive manner and characterize the associated THz electromagnetic, acoustomechanical, and morphological features.…”
Section: Introductionmentioning
confidence: 52%
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“…V-notches—surface grooves circumscribing the weld-area, resulting from, for example, anisotropic shrinkage and air trapped by the convergence of melt fronts—frequently accompany weld lines [ 11 , 13 , 14 ]. In addition to their obvious effects as surface blemishes, these defects may have substantial deleterious effects on the mechanical performance of specimens: acting as stress concentrators, in addition to bisecting the highly oriented skin layer of a moulding [ 10 , 14 ].…”
Section: Introductionmentioning
confidence: 99%