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Kun Li Thesis .pdf (5.45 MB)

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Size-Scale Structural Effects on The Fracture Toughness of Paper

Li, Kun
http://rave.ohiolink.edu/etdc/view?acc_num=miami1377024205

Abstract Details

2013, Master of Science, Miami University, Chemical, Paper and Biomedical Engineering.
This thesis focuses on the study of size-scale structural effects on paper fracture toughness. Three analyses, including tensile strength ratio, consumed energy ratio and stress intensity factor ratio were used to explore the sensitivity of paper to the propagation of cracks. The results of the comparison were utilized to focus on stress ratios for the new modified LEFM approach presented in appendix A. The modified LEFM can be used as a simple method to explore fracture toughness relative to tensile strength. Both commercial papers and handsheets were tested and analyzed for their fracture behavior using double-notched tensile specimens. The combination of experimental testing and analysis suggest that paper structure plays an important role on relative fracture toughness. The results indicate that paper towel, the least homogenous material tested, had the lowest sensitivity to notches. The differences in relative fracture toughness are related to size-scale of structural features. Relative fracture toughness varied for handsheets made under various process conditions to yield different structures. It is concluded that material relative fracture toughness increases with material heterogeneity.
Douglas Coffin, PhD (Committee Chair)
Amy Yousefi, PhD (Committee Member)
D.Steven Keller, PhD (Committee Member)
111 p.
Engineering
Fracture Toughness Structural Effects Paper Towel

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Citations

  • Li, K. (2013). Size-Scale Structural Effects on The Fracture Toughness of Paper [Master's thesis, Miami University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=miami1377024205

    APA Style (7th edition)

  • Li, Kun. Size-Scale Structural Effects on The Fracture Toughness of Paper. 2013. Miami University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=miami1377024205.

    MLA Style (8th edition)

  • Li, Kun. "Size-Scale Structural Effects on The Fracture Toughness of Paper." Master's thesis, Miami University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1377024205

    Chicago Manual of Style (17th edition)

miami1377024205
399
© 2013, all rights reserved.
This open access ETD is published by Miami University and OhioLINK.