TY - JOUR
T1 - Observation and understanding of the tear mechanism of polyethylene blown films at variable loading angles
AU - Choi, Byoung Ho
AU - Patel, Rajen
AU - Degroot, A. Willem
AU - Demirors, Mehmet
AU - Liu, Lizhi
AU - Anderson, Kenneth
AU - Na, Sungsoo
PY - 2014/5
Y1 - 2014/5
N2 - Tear is a key physical property of polyethylene (PE) blown films. There are many variables that affect the overall tear property, such as tear path and plastic deformation wake. In this study, five blown PE films are prepared and tested by the Elmendorf tear test at five sampling angles, i.e. 0 (MD), 30, 45, 60, and 90 (CD) degrees. Statistical analysis is carried out on the tear values and the variation of the tear data is investigated based on the observation of the tear samples. The mechanism of severely curved crack, i.e. J-tear, is also studied to understand the tear property variation of blown PE films. In addition, the relationship between tear values and tensile toughness in perpendicular direction is investigated to understand the role of a process zone lying in front of a crack tip during tear. POLYM. ENG. SCI., 54:1038-1046, 2014.
AB - Tear is a key physical property of polyethylene (PE) blown films. There are many variables that affect the overall tear property, such as tear path and plastic deformation wake. In this study, five blown PE films are prepared and tested by the Elmendorf tear test at five sampling angles, i.e. 0 (MD), 30, 45, 60, and 90 (CD) degrees. Statistical analysis is carried out on the tear values and the variation of the tear data is investigated based on the observation of the tear samples. The mechanism of severely curved crack, i.e. J-tear, is also studied to understand the tear property variation of blown PE films. In addition, the relationship between tear values and tensile toughness in perpendicular direction is investigated to understand the role of a process zone lying in front of a crack tip during tear. POLYM. ENG. SCI., 54:1038-1046, 2014.
UR - http://www.scopus.com/inward/record.url?scp=84899420272&partnerID=8YFLogxK
U2 - 10.1002/pen.23646
DO - 10.1002/pen.23646
M3 - Article
AN - SCOPUS:84899420272
SN - 0032-3888
VL - 54
SP - 1038
EP - 1046
JO - Polymer Engineering and Science
JF - Polymer Engineering and Science
IS - 5
ER -