02520nam a2200265 a 4500 vtls000046519 KUKTEM 20251114204431.0 100622t2009 my da f m 000 0 eng d THE0007469(Local) 201905161313 fawwaz 201107132329 VLOAD 201006221642 Fida UMP TP1150 .N39 2009 rs Bc. Mohd Nazri Noordin Sink marks defect on injection molding using different raw materials / Mohd Nazri Bin Noordin Sink marks defect on injection molding using different raw materials [electronic resource] Kuantan, Pahang : UMP , 2009 xiii, 63 p. : ill. (some col.) ; 30 cm. + 1 computer disc Project paper (Bachelor of Mechanical Engineering with Manufacturing Engineering) -- Universiti Malaysia Pahang - 2009 Bibliography : p. 42 The quality of an injection molded part is affected by material properties, mold geometry, process conditions and etc. Obtaining optimum parameters is the key problem to improve the part quality. Sink marks is one of several important flaws of injection molded parts. In this project, numerical simulation is combined with Taguchi design-of-experiment (DOE) technique to investigate the influence of parameters on sink marks of the injection molded part and optimization of parameter settings in injection molding process. The Acrylonitrile Butadiene Styrene (ABS) and polyethylene (PE) materials were used to analyze the sink marks. An orthogonal array based on the Taguchi’s method and Analysis of Variance (ANOVA) was conducted to observe the sink marks of injection molded parts, and to allocate the significant of each factor that contribute to sink marks. Four factors were consisting of packing pressure, mold temperature, melt temperature and packing time. These factors were found to be the principal factors affecting the sink marks of the injection molded parts. It was found that optimum parameters for ABS material are packing pressure at 375 MPa, mold temperature at 400c, melt temperature at 2000c and packing time and packing time 1s. While for PE material, the optimum parameter was found are packing pressure at 75 MPa ,mold temperature at 700c, Melt temperature at 1900c and packing time at 1.5s. Injection molding of plastics Polyethylene 0 0 0 1 20000 20000 2019-09-04 0 TP1150 .N39 2009 rs Bc. 0000046207 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 20000 20000 2019-09-04 0 CD 4404 | TP1150 .N39 2009 rs Bc. 0000046208 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 1947 1953 VTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5040*5200*6500*6501*9992