Research article Topical Sections

Development of measurement system of cutting load response in nipper blade, and estimation of wedge angle effect on cutting characteristics and shear edge trace of polystyrene bars

  • Received: 03 December 2018 Accepted: 27 February 2019 Published: 11 March 2019
  • This research was aiming to investigate cutting characteristics of Polystyrene square bars that were cut by three different type nippers. A pair of rotational-linked fixture of nipper arm was designed and developed for measuring the cutting load and displacement of the nipper. After discussing the calibration of nipper’s inside spring force and the stiffness of fixture, three types of nippers which had the representative apex angles of 72° (the big nipper), 42° (the medium nipper), and 13° (the small nipper), were examined with a 3 mm square bar of polystyrene under keeping the indentation velocity at V = 1 mm·s−1. It was clarified that the capability of designed fixture JIG was consistent for measuring and comparing the cutting response of several nippers. Using the fixture JIG and three kinds of nippers, the cutting peak maximum force, the cutting energy and the sheared profile (shear edge trace) of the PS bar specimen were investigated. When using the big and medium nippers, there were unstable cracks and dynamic large force drop (as a breaking down) during the cutting process after passing the necked stage, while the small nipper had the lowest peak line in the early stage (at the pushed stage) and any complicated cracks and large force drop were not detected, due to the wedge effect of blade apex angle and frictional restriction of counter anvil. Furthermore, the asymmetric effects of upper/lower wedge indentation were detected by using a microscope CCD camera during the cutting process.

    Citation: Thepwachara Ruchirabha, Shigeru Nagasawa. Development of measurement system of cutting load response in nipper blade, and estimation of wedge angle effect on cutting characteristics and shear edge trace of polystyrene bars[J]. AIMS Materials Science, 2019, 6(2): 139-164. doi: 10.3934/matersci.2019.2.139

    Related Papers:

  • This research was aiming to investigate cutting characteristics of Polystyrene square bars that were cut by three different type nippers. A pair of rotational-linked fixture of nipper arm was designed and developed for measuring the cutting load and displacement of the nipper. After discussing the calibration of nipper’s inside spring force and the stiffness of fixture, three types of nippers which had the representative apex angles of 72° (the big nipper), 42° (the medium nipper), and 13° (the small nipper), were examined with a 3 mm square bar of polystyrene under keeping the indentation velocity at V = 1 mm·s−1. It was clarified that the capability of designed fixture JIG was consistent for measuring and comparing the cutting response of several nippers. Using the fixture JIG and three kinds of nippers, the cutting peak maximum force, the cutting energy and the sheared profile (shear edge trace) of the PS bar specimen were investigated. When using the big and medium nippers, there were unstable cracks and dynamic large force drop (as a breaking down) during the cutting process after passing the necked stage, while the small nipper had the lowest peak line in the early stage (at the pushed stage) and any complicated cracks and large force drop were not detected, due to the wedge effect of blade apex angle and frictional restriction of counter anvil. Furthermore, the asymmetric effects of upper/lower wedge indentation were detected by using a microscope CCD camera during the cutting process.


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    [1] Li KW (2003) Ergonomic evaluation of a fixture used for power driven wire-tying hand tools. Int J Ind Ergon 32: 71–79. doi: 10.1016/S0169-8141(03)00030-1
    [2] Anton D, Shibley LD, Fethke NB, et al. (2001) The effect of overhead drilling position on shoulder moment and electromyography. Ergonomics 44: 489–501. doi: 10.1080/00140130120079
    [3] Li KW (2002) Ergonomic design and evaluation of wire-tying hand tools. Int J Ind Ergon 30: 149–161. doi: 10.1016/S0169-8141(02)00097-5
    [4] Vi P (2006) A field study investigating the effects of a rebar-tying machine on trunk flexion, tool usability and productivity. Ergonomics 49: 1437–1455. doi: 10.1080/00140130600805028
    [5] Husain A, Khan A, Hasan F (2013) Ergonomic evaluation of effects of handle shape and task orientation on human performance in screw driving task. Int J Adv Technol 4: 105–114.
    [6] Groenesteijn L, Eikhout SM, Vinka P (2004) One set of pliers for more tasks in installation work: the effects on (dis)comfort and productivity. Appl Ergon 35: 485–492. doi: 10.1016/j.apergo.2004.03.010
    [7] Paivinen M (2006) Electricians' perception of work-related risks in cold climate when working on high places. Int J Ind Ergon 36: 661–670. doi: 10.1016/j.ergon.2006.04.005
    [8] Machine Design (2013) Available from: https://www.machinedesign.com/news/pliers.
    [9] Available from: https://en.wikipedia.org/wiki/Gundam_model (accessed on December 1, 2018)
    [10] Grunzweig J, Longman IM, Petch NJ (1954) Calculations and Measurements on Wedge-Indentation. J Mech Phys Solids 2: 81–86. doi: 10.1016/0022-5096(54)90002-2
    [11] Johnson KL (1985) Contact Mechanics, Cambridg Univ. Press, 160–166.
    [12] Hill R (1953) On the Mechanics of Cutting Metal Strips with Knife-edged Tools. J Mech Phys Solids 1: 265–270. doi: 10.1016/0022-5096(53)90006-4
    [13] Canakci H, Alak D, Celik F (2016) Evaluation of Shear Strength Properties of Modified Expanded Polystyrene Aggregate. Procedia Eng 161: 606–610. doi: 10.1016/j.proeng.2016.08.708
    [14] Nagasawa S, Masaki Y, Fujikura M, et al. (2011) Analysis of Cutting Characteristic of Polycarbonate Sheet Subjected to Wedge Indentation by Knife Edge and Grooved Plate. Mach Sci Technol 15: 110–131. doi: 10.1080/10910344.2011.557973
    [15] Nagasawa S, Takahashi T, Fukuzawa Y (2010) Effect of Tool Condition on Wedging Characteristics of Stacked Polycarbonate Sheets. JP J Solids Struct 4: 65–84.
    [16] Nagasawa S, Masaki Y, Fukuzawa Y, et al. (2012) Bending Effect on Cutting Characteristics of Polycarbonate Thick Sheet Subjected to Indentation of Heightwise-Asymmetric Wedge Blades. Adv Mater Res 445: 68–72. doi: 10.4028/www.scientific.net/AMR.445.68
    [17] Mitsomwang P, Nagasawa S, Kuroiwa H, et al. (2014) Deformation Analysis of Silicone Rubber Sheet to Keen WC Blade Indentation. Int J Automation Technol 8: 761–772. doi: 10.20965/ijat.2014.p0761
    [18] Murayama M, Nagasawa S, Fukuzawa Y, et al. (2003) Effect of sheet thickness and friction on load characteristic of crushed center bevel cutter indented to aluminum sheet, Computational Methods in Contact Mechanics VI, 115–124.
    [19] Murayama M, Nagasawa S, Fukuzawa Y, et al. (2004) Cutting Mechanism and Load Characteristic of Trapezoidal Center Bevel Cutting Indented on Aluminum Sheet. Japan Soc Mech Eng Int 47: 21–28.
    [20] Chaijit S, Nagasawa S, FukuzawaY, et al. (2006) Effect of Tip Profile on Cutting Processability of Trapezoidal Cutting Blade Indented to Aluminum Sheet. J Mech Mater Struct 1: 1301–1321. doi: 10.2140/jomms.2006.1.1301
    [21] Mitsomwang P, Natpukkana P, Borrisutthekul R, et al. (2016) Effects of Blade Tip Geometry on Cutting Characteristics of Lead Alloy Sheet Subjected to Wedge Indentation. Key Eng Mater 719: 137–141. doi: 10.4028/www.scientific.net/KEM.719.137
    [22] Mitsomwang P, Nagasawa S, Chaijit S, et al. (2012) Effect of Underlay Stiffness on Cutting Profile of Polycarbonate Sheet during Wedge Indentation Process. J Adv Mech Des Syst 6: 1168–1179. doi: 10.1299/jamdsm.6.1168
    [23] Nagasawa S, Takahashi T, Fujikura M (2010) Contact Stability on Cutting Characteristics of Polycarbonate Sheets Subjected to Two-Line Wedge Indentation. J Solid Mech Mater Eng 4: 578–589. doi: 10.1299/jmmp.4.578
    [24] Nagasawa S, Fujikura M, Fukuzawa Y (2011) Finite Element Analysis of Cutting Deformation of Stacked Polycarbonate Subjected to Two-Line Wedge Indentation. J Solid Mech Mater Eng 5: 721–731. doi: 10.1299/jmmp.5.721
    [25] Kaneko S, Nagasawa S (2018) Effect of wedge blade direction on cutting characteristics of anisotropic polyethylene terephthalate film. T JSME (in Japanese) 84: 1–18.
    [26] Miyari H (1989) Chapter 4, Fracture of Polymeric materials. Material and fracture, pp.120–121, Materials Science Society of Japan.
    [27] Lynwood C (2014) Chapter Preface. Polystyrene Synthesis, Characteristics and Application (Chemistry Research and Application), New York: Nova science publisher, Inc.
    [28] Polystyrene CHEMICAL COMPOUND (2018) Available from: https://www.britannica.com/science/polystyrene (accessed on 2018, October 10th).
    [29] Hill R (1953) On the Mechanics of Cutting Metal Strips with Knife-edge Tool. J Mech Phys Solids 1: 265–270. doi: 10.1016/0022-5096(53)90006-4
    [30] Nagasawa S, Fukuzawa Y, Murayama M, et al. (2016) Mechanics and Technology of Form Cutting for Paperboard-Like Materials Processing (in Japanese), pp.80–86, Edited by Research Group of Die cutting Technology on Paperboard and Composite materials, Taiyo publishing.
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