Jiquan Li
نویسندگان
چکیده
Rapid heat cycle molding (RHCM) is a special molding process capable of producing molded plastic parts with high surface quality and improved weldline strength and appearance. This study investigated the influence of the weldline on the tensile strength of RHCM and conventional injection molded (CIM) components. The test specimens with and without a weldline were cut from RHCM and CIM parts for scanning electron microscopy (SEM) imaging to characterize the structure and dimensions of the weldline and tensile testing. The tensile testing results showed that the weldline reduced the tensile strength, but RHCM decreased the tensile strength reduction effect of the weldline. There was no distinguishable difference between the two molding processes for the tensile strength of specimens without a weldline. In addition, a thin surface layer of material containing the V-notch at the weldline was removed from the RHCM and CIM parts to examine its effect on the tensile properties. The thinned-out specimens with a weldline showed improved tensile strength, and specimens without a weldline showed decreased tensile strength, compared to specimens with the original full thickness.
منابع مشابه
Redefinition and global estimation of basal ecosystem respiration rate
Wenping Yuan, Yiqi Luo, Xianglan Li, Shuguang Liu, Guirui Yu, Tao Zhou, Michael Bahn, Andy Black, Ankur R. Desai, Alessandro Cescatti, Barbara Marcolla, Cor Jacobs, Jiquan Chen, Mika Aurela, Christian Bernhofer, Bert Gielen, Gil Bohrer, David R. Cook, Danilo Dragoni, Allison L. Dunn, Damiano Gianelle, Thomas Grünwald, Andreas Ibrom, Monique Y. Leclerc, Anders Lindroth, Heping Liu, Luca Belelli ...
متن کاملAssessing the effects of short-term Spartina alterniflora invasion on labile and recalcitrant C and N pools by means of soil fractionation and stable C and N isotopes
Article history: An exotic grass Spartina alt Received 27 August 2007 Received in revised form 20 February 2008 Accepted 26 February 2008
متن کاملCross-scale Dynamo Action in Multiscale Plasma Turbulence
The interplay mechanism between electromagnetic (EM) and electrostatic (ES) turbulence is explored using direct gyrofluid simulations of mixed resistive magnetohydrodynamic (MHD) and ion-scale microinstability. With an elucidation based on a minimal model, we propose a new concept of cross-scale dynamo action induced by microturbulence as the mechanism responsible for the interaction between mu...
متن کاملGlobal patterns of land‐atmosphere fluxes of carbon dioxide, latent heat, and sensible heat derived from eddy covariance, satellite, and meteorological observations
Martin Jung, Markus Reichstein, Hank A. Margolis, Alessandro Cescatti, Andrew D. Richardson, M. Altaf Arain, Almut Arneth, Christian Bernhofer, Damien Bonal, Jiquan Chen, Damiano Gianelle, Nadine Gobron, Gerald Kiely, Werner Kutsch, Gitta Lasslop, Beverly E. Law, Anders Lindroth, Lutz Merbold, Leonardo Montagnani, Eddy J. Moors, Dario Papale, Matteo Sottocornola, Francesco Vaccari, and Christop...
متن کامل