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Study on Mechanical Properties for Shearing Breakage of Oat Kernel

  • Nan Zhao , Nan Fu , Dong Li EMAIL logo , Li-jun Wang EMAIL logo and Xiao Dong Chen
Published/Copyright: December 15, 2017

Abstract

Breaking force, deformation, breaking energy, strength, hardness and rigidity of oat kernel under different loading rates (0.02, 0.04, 0.06, 0.08 and 0.10 mm/s) and loading position (ventral and dorsal sides) were determined within a moisture content range of 15.7 %–27.5 % (w.b.) by using a texture analyzer (TA) to investigate mechanical properties for shearing breakage of oat kernel. Complete randomized design was experimented to construct the force–distance curve. In this study, these mechanical properties of oat kernel were expressed as a function of moisture content and loading rate respectively. The result showed that breaking force, energy, strength, hardness and rigidity decreased linearly with the increasing moisture content and increased firstly and decreased then with the increasing loading rate. Deformation had an increasing trend with the increase in moisture content and loading rate. The highest values of breaking force, breaking energy, strength, hardness and rigidity were obtained at 0.08 mm/s loading rate. Moreover the dorsal side of oat kernel had a better shearing capacity compared with ventral side, which reflected in that breaking force, strength and hardness were great significantly at 95 % confident level when dorsal side was loaded.

Acknowledgments

This research was supported by The National Key Research and Development Program of China (2016YFD0701801) and Commonweal Guild Grain Scientific Research Program of China (201513004).

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Received: 2017-3-23
Accepted: 2017-12-5
Published Online: 2017-12-15

© 2018 Walter de Gruyter GmbH, Berlin/Boston

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