TITLE

Optimal Process Conditions of Warpage with Thin-Shallow Features Molded with Pin-Point Gating System

AUTHOR(S)
Fathullah, M.; Shayfull, Z.; Shuaib, N. A.; Nasir, S. M.; Manan, M. S. Abdul
PUB. DATE
November 2011
SOURCE
International Review of Mechanical Engineering;Nov2011, Vol. 5 Issue 7, p1295
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Thin shallow plastic parts are widely produced using injection molding processes in producing varieties of components and applications. Warpage issue always happens in manufacturing thin shallow parts due to its uneven shape of the parts and also due to lack of knowledge in selecting the best injection molding parameters to produce with minimal warpage. Due to uncertainty of selecting the best parameters in reducing warpage issue, hence this study is performed purposely to determine the best parameters to be selected in manufacturing thin-shallow parts. Three types of polymer materials are selected for experimentations and the results are obtained using Taguchi Method and Analysis of Variance (ANOVA) and run through simulation software. All parameters are then compared with each other in recommending molding designers which is the best to be applied at mold design stage. Results from this research recommend polypropylene as the best parameter in order to obtain the minimal warpage of thin-shallow parts.
ACCESSION #
76127884

 

Related Articles

  • Construct Validity of the Chicken Crop Model in the Simulation of Laparoscopic Pyeloplasty. Jiang, Chun; Liu, Mo; Chen, Jia; Wang, Pei; Lin, Tianxin; Xu, Kewei; Han, Jinli; Huang, Hai; Huang, Jian // Journal of Endourology;Aug2013, Vol. 27 Issue 8, p1032 

    Purpose: We examined the construct validity (ability to discriminate between experienced and inexperienced subjects) of the chicken crop model in the simulation of laparoscopic pyeloplasty. Materials and Methods: Dead chickens were used. The chicken crop and esophagus were used to simulate the...

  • A note on D-optimal designs for models with and without an intercept. Kim-Hung Li; Tai-Shing Lau; Congqi Zhang // Statistical Papers;Jul2005, Vol. 46 Issue 3, p451 

    In this paper we give a sufficient condition under which the Z)-optimaI design for a regression model without an intercept can be obtained from the O-optimal design for the corresponding model with an intercept by simply removing the origin from its support points. Examples are given to...

  • Dexterity and stiffness analysis of a three-degree-of-freedom planar parallel manipulator with actuation redundancy. Wu, J.; Wang, J.-S.; Wang, L.-P.; Li, T.-M. // Proceedings of the Institution of Mechanical Engineers -- Part C;Aug2007, Vol. 221 Issue 8, p961 

    The current paper deals with the dexterity and stiffness of a three-degree of freedom (DOF) planar parallel manipulator with actuation redundancy, which is a subpart of a four-DOF-hybrid machine tool. Based on the kinematics, the dexterity is analysed. The stiffness indices, which are the...

  • A Measure of Association for Nonparametric Statistics. Acock, Alan C.; Stavig, Gordon R. // Social Forces;Jun79, Vol. 57 Issue 4, p1381 

    ABSTRACT A number of chi&sup 2; based nonparametric tests are used to determine the level of statistical significance. Once the significance level is determined with chi&sup 2;, Cramer's V can be used to measure the strength of association. Values for the maximum possible chi&sup 2; are given...

  • Molecular dissection of interspecific variation between Gossypium hirsutum and Gossypium barbadense (cotton) by a backcross-self approach: I. Fiber elongation. Chee, Peng; Draye, Xavier; Jiang, Chun-Xiao; Decanini, Laura; Delmonte, Terrye A.; Bredhauer, Robert; Smith, C. Wayne; Paterson, Andrew H. // Theoretical & Applied Genetics;Aug2005, Vol. 111 Issue 4, p757 

    The current study is the first installment of an effort to explore the secondary gene pool for the enhancement of Upland cotton ( Gossypium hirsutum L.) germplasm. We developed advanced-generation backcross populations by first crossing G. hirsutum cv. Tamcot 2111 and G. barbadense cv. Pima S6,...

  • Multiple comparison analysis testing in ANOVA. McHugh, Mary L. // Biochemia Medica;2011, Vol. 21 Issue 3, p203 

    The Analysis of Variance (ANOVA) test has long been an important tool for researchers conducting studies on multiple experimental groups and one or more control groups. However, ANOVA cannot provide detailed information on differences among the various study groups, or on complex combinations of...

  • Analysis and Validation of a Psychrometric Apparatus. Dias, João Batista; Schneider, Paulo Smith // ASHRAE Transactions;2004, Vol. 110 Issue 2, p117 

    This article uses the analysis of variance as a tool to validate a calibration apparatus for temperature and relative humidity sensors. The validation procedure establishes the operational ranges for measurement of the dry-bulb (tdb) and wet-bulb (twb) temperatures and of the relative humidity...

  • EFFECTS OF STRATEGY USE ON ACQUISITION OF A MOTOR TASK DURING VARIOUS STAGES OF LEARNING. Tennant, L. Keith; Murray, Nicholas P.; Tennant, Laurie M. // Perceptual & Motor Skills;Jun2004 Part 2, Vol. 98 Issue 3, p1337 

    To specify the optimal point for introducing a learning strategy, 50 participants were randomly assigned into five groups based on the timing of strategy introduction while learning a badminton serve. Groups were instructed in the use of Singer's Five-step Strategy either prior to starting their...

  • EFFECTS OF PARTICLE CONTEXT AND POST-CURING THERMAL TREATMENT ON THE EFFECTIVE MODULUS OF MULTI-PHASE COMPOSITE MATERIALS. LUCA, Dana MOTOC // Annals of DAAAM & Proceedings;Jan2009, p163 

    The subject of the paper covers a part of an extended design of experiments concept developed around the development and properties evaluation of multi-phase composite polymeric materials for various structural applications. Various experimental methods employed in order to retrieve the...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics