Study of the Climbing Behavior of the Flagella of Calamus Simplicifolius Based on Micro-CT and Nanoindentation

Dai, Fukuan; Wang, Ziwei; Zhong, Tuhua; Wang, Hankun; Tian, Guohui

doi:10.1007/s42235-022-00235-8

Cited by 2 publications

(1 citation statement)

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“…After completing a 3 s unloading segment, data from the unloading segment was assessed for computational analysis ( Figure 2 ). The indentation modulus of elasticity and hardness of the samples were then calculated using the Oliver and Pharr equations [ 29 ], incorporating specific data and procedures as described by Eder et al [ 30 ] and Dai et al [ 31 , 32 ]:

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Section: Materials and Methodsmentioning

confidence: 99%

Fiber Characteristics and Mechanical Properties of Oxytenanthera abyssinica

Yu,

Dai,

Zhang

et al. 2023

Plants

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Unlike the culm hollow structure of most bamboo species, Oxytenanthera abyssinica has a unique solid or semi-solid culm, which may endow it with superior mechanical performance. In this study, the variation in fiber morphology and micro-mechanical properties across the radial regions of bamboo culm was examined by optical microscopy, scanning electron microscopy, X-ray diffraction, and nanoindentation. Results showed that the mean values of vascular bundle frequency and fiber tissue proportion were 1.76 pcs/mm2 and 21.04%, respectively, both of which increased gradually from inner to outer. The mean length, diameter, and length-diameter ratio of the fiber were 2.10 mm, 21.54 μm, and 101.41 respectively. The mean indentation modulus of elasticity (IMOE) and hardness were 21.34 GPa and 545.88 MPa. The IMOE exhibited a significant increase from the inner to the middle region, and little change was observed from the middle to the outer region. There were slight fluctuations in hardness along the radial direction. The mean crystallinity and microfibril angle(MFA) of the fibers was 68.12% and 11.26 degrees, respectively. There is a positive correlation between cellulose crystallinity and the IMOE and hardness, while there is a negative correlation between the MFA and the IMOE and the hardness.

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